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JPH09127258A - Seating detector - Google Patents

Seating detector

Info

Publication number
JPH09127258A
JPH09127258A JP28060095A JP28060095A JPH09127258A JP H09127258 A JPH09127258 A JP H09127258A JP 28060095 A JP28060095 A JP 28060095A JP 28060095 A JP28060095 A JP 28060095A JP H09127258 A JPH09127258 A JP H09127258A
Authority
JP
Japan
Prior art keywords
seat
person
output
signal
signal processing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP28060095A
Other languages
Japanese (ja)
Other versions
JP3375472B2 (en
Inventor
Yoshiaki Watanabe
義明 渡邉
Hiroyuki Ogino
弘之 荻野
Masaatsu Inoue
雅篤 井上
Takashi Iwasa
隆司 岩佐
Kanei Morota
巻衛 諸田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Panasonic Holdings Corp
Original Assignee
Honda Motor Co Ltd
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd, Matsushita Electric Industrial Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP28060095A priority Critical patent/JP3375472B2/en
Publication of JPH09127258A publication Critical patent/JPH09127258A/en
Application granted granted Critical
Publication of JP3375472B2 publication Critical patent/JP3375472B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Air Bags (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Seats For Vehicles (AREA)
  • Passenger Equipment (AREA)

Abstract

PROBLEM TO BE SOLVED: To discriminate the seating definitely between an article and a person by processing output signals from a vibration detecting means mounted on the back of seat and making a decision whether a person is seating based on the processed signals. SOLUTION: When no person is seated, output from a signal processing means 2 is 0. When a person is seated, a voltage is generated from a piezoelectric element 1 by a pressure acting on the back 4-b of a seat 4 and the means 2 produces an output. When a signal larger than a seating signal threshold value V1 endures longer than a seating time threshold value T1 in the output data from the means 2, a decision 3 is made that a person is seated. When a person takes a rest after seating, minor movement of body causes to generate a small signal from the element 1 and a small output is produced from the means 2. A leaving seat signal threshold V2 and a leaving seat time threshold T2 are previously calculated from the data at the time of rest and a decision is made that a person has left the seat when the output signal from the means 2 endures lower than the threshold value V2 for longer than the threshold time T2 . When an article is placed on the seat face 4-a a high vibration is applied instantaneously and transmitted to the back 4 b while being damped and the means 2 produces a small output having short duration. Consequently, the seating of person can be discriminate definitely from an article.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、在席検出装置、と
くに、座席上の人体の有無を検出する在席検出装置に関
するもので、人が座席にいる時のみ情報通信等のサービ
スを提供するシステムや、室内の音響や空調の制御、交
通機関等での乗員把握、また、自動車の事故時に乗員を
拘束して乗員の損傷を防止するエアバッグ装置の制御等
に利用できる。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an occupancy detection device, and more particularly to an occupancy detection device for detecting the presence or absence of a human body on a seat, and provides services such as information communication only when a person is in the seat. It can be used for a system, control of sound and air conditioning in a room, grasping an occupant in transportation, etc., and controlling an airbag device for restraining the occupant to prevent the occupant from being damaged when an automobile accident occurs.

【0002】[0002]

【従来の技術】従来、この種の在席検出装置は、例えば
図7のような構成となっていた。すなわち、1は可撓性
のある圧電素子、2は信号処理手段,3は判定手段であ
り、信号処理手段2は圧電素子1の出力信号を増幅する
増幅手段2−a、増幅手段2−aの出力のある特定の周
波数成分を濾波するフィルタ2−b、フィルタ2−bか
らの出力信号を平滑化する平滑化手段2−cから成って
いる。
2. Description of the Related Art Conventionally, this type of occupancy detection device has a structure as shown in FIG. 7, for example. That is, 1 is a flexible piezoelectric element, 2 is a signal processing means, 3 is a determination means, and the signal processing means 2 is an amplification means 2-a for amplifying the output signal of the piezoelectric element 1 and an amplification means 2-a. Of the output of the filter 2-b for filtering a specific frequency component, and smoothing means 2-c for smoothing the output signal from the filter 2-b.

【0003】ここで、人体が座席4に着座すると、座席
4の座面4−aの表布下に配設された圧電素子1が変形
を受け、圧電効果により電圧が発生する。この発生信号
には、着座時には着座の振動により一時的に大きな信号
が表れるが、人体が安静にしていると人体の心拍や呼吸
の振動による細かな体動振動が表れる。人体がいなけれ
ば、出力信号はゼロになる。座席4に物が置かれた場合
には、置かれた瞬間には一時的に大きな信号が表れる
が、物には人体のような心拍や呼吸による細かな体動は
ないので、出力信号はゼロになる。このような圧電素子
1からの出力信号は、信号処理手段2の増幅手段2−a
により増幅され、フィルタ2−bにより必要とする周波
数成分に濾波され、さらに平滑化手段2−cにより平滑
化されて、判定手段3により人の在、不在を判定する。
Here, when a human body is seated on the seat 4, the piezoelectric element 1 arranged below the seating surface 4-a of the seat 4 is deformed, and a voltage is generated by the piezoelectric effect. In this generated signal, a large signal temporarily appears due to the vibration of the sitting person while sitting, but when the human body is at rest, small body movement vibrations due to the vibration of the heartbeat and respiration of the human body appear. If there is no human body, the output signal will be zero. When an object is placed on the seat 4, a large signal appears momentarily at the moment it is placed, but since the object does not have minute movements due to heartbeat or breathing like the human body, the output signal is zero. become. The output signal from such a piezoelectric element 1 is amplified by the amplification means 2-a of the signal processing means 2.
Is amplified by the filter 2-b, filtered by the filter 2-b to a required frequency component, and further smoothed by the smoothing means 2-c. The judging means 3 judges the presence or absence of a person.

【0004】[0004]

【発明が解決しようとする課題】しかし、従来の在席検
出装置では、座面上に物が置かれる時にも大きな振動が
発生し,振動検出装置から一時的に大きな信号が出力さ
れるため、人の着座時の信号との明確な区別が困難にな
る。
However, in the conventional seat detection device, a large vibration is generated even when an object is placed on the seat surface, and the vibration detection device temporarily outputs a large signal. It becomes difficult to clearly distinguish from a signal when a person is sitting.

【0005】また、従来の在席検出装置では、座席に子
供を座わらせる時に、子供用補助シートを用いる場合で
は、人体の振動が得られにくく、判定が困難になる。
Further, in the conventional presence detecting apparatus, when the child auxiliary seat is used when the child is seated on the seat, the vibration of the human body is hard to be obtained, and the determination becomes difficult.

【0006】また、従来の在席検出装置では、補助的乗
員拘束装置として エアバッグ装置が取付けられている
自動車に使用した場合、たとえば人が前屈みになってい
るような、正規でない座りかたをしている場合も在席と
判定し、エアバッグ装置を動作させていたという問題が
あった。
Further, in the conventional seat detection device, when it is used in a vehicle equipped with an airbag device as an auxiliary occupant restraint device, for example, an unnatural sitting posture such as a person leaning forward may occur. Even if he / she is still present, there is a problem that the air bag device is operated because it is determined to be present.

【0007】そこで、本発明の第1の目的は、座席上に
物がおかれても、人の着座と明確に区別して判定できる
在席検出装置を提供することにある。
Therefore, a first object of the present invention is to provide an occupant detection apparatus which can make a distinction even when an object is placed on the seat and can be distinguished from seated by a person.

【0008】また、本発明の第2の目的は、座席上に子
供用補助シートがある場合でも、座席上の人の存在を確
実に検出できる在席検出装置を提供することにある。
A second object of the present invention is to provide an occupancy detection device capable of reliably detecting the presence of a person on the seat even when there is a child auxiliary seat on the seat.

【0009】また、本発明の第3の目的は、補助的乗員
拘束装置の取付られた自動車に使用した場合、人が正規
でない座り方をして在席している場合に、それを検出し
て補助的乗員拘束装置の動作を制御することができる在
席検出装置を提供することにある。 また、本発明の第
4の目的は、座席上に人が着座した場合に、即座に在席
であると判定できる在席検出装置を提供することにあ
る。
A third object of the present invention is to detect, when used in a vehicle equipped with an auxiliary occupant restraint system, when a person is sitting in an abnormal seating position. It is another object of the present invention to provide an occupant detection device that can control the operation of the auxiliary occupant restraint system. A fourth object of the present invention is to provide an occupancy detection device that can immediately determine that an occupancy is present when a person sits on the seat.

【0010】[0010]

【課題を解決するための手段】上記第1、第2の目的を
達成するために、本発明の在席検出装置は、座席の背面
に設けられた振動検出手段と、前記振動検出手段の出力
信号を処理する信号処理手段と、前記信号処理手段の出
力から前記座席上の人の有無を判定する判定手段とを備
えたものである。
In order to achieve the above first and second objects, the seating detection apparatus of the present invention is provided with a vibration detecting means provided on the back of a seat and an output of the vibration detecting means. A signal processing means for processing a signal and a determination means for determining the presence or absence of a person on the seat from the output of the signal processing means are provided.

【0011】また、上記第1、第2の目的を達成するた
めに、本発明の在席検出装置は、判定手段が信号処理手
段の出力が予め決められた着座信号閾値を越えた時間
が、予め決められた着座時間閾値以上連続した場合に、
人が座席に在席していると判定するものである。
Further, in order to achieve the above first and second objects, in the seating detection apparatus of the present invention, the time when the output of the signal processing means by the determination means exceeds a predetermined seating signal threshold value, If you continue for more than a predetermined sitting time threshold,
It is determined that a person is present in the seat.

【0012】また、上記第1、第2の目的を達成するた
めに、本発明の在席検出装置は、判定手段が信号処理手
段の出力が予め決められた離座信号閾値を下回った時間
が、予め決められた離座時間閾以上連続した場合に人が
座席に不在であると判定するものである。
Further, in order to achieve the above first and second objects, in the presence detecting apparatus of the present invention, the time when the output of the signal processing means is below the predetermined departure signal threshold value by the determination means. The person is determined to be absent from the seat if the person has continued for a predetermined separation time threshold or longer.

【0013】また、第3の目的を達成するために、本発
明の在席検出装置は、在席と判定した場合に補助的乗員
拘束装置の動作を許可する信号を出力するものである。
Further, in order to achieve the third object, the seating detection apparatus of the present invention outputs a signal for permitting the operation of the auxiliary occupant restraint system when it is determined that the seat is present.

【0014】また、上記第3の目的を達成するために、
本発明の在席検出装置は、不在と判定した時に補助的乗
員拘束装置の動作を不許可にする信号を出力するもので
ある。
Further, in order to achieve the third object,
The occupant detection apparatus of the present invention outputs a signal for disabling the operation of the auxiliary occupant restraint apparatus when it is determined that the vehicle is absent.

【0015】また、上記第1の目的を達成するために、
本発明の在席検出装置は、座席の座面に設けられた座面
振動検出手段と、前記座面振動検出手段の出力信号を処
理する座面信号処理手段と、前記座面の背面に設けられ
た背面振動検出手段と、前記背面振動検出手段の出力信
号を処理する背面信号処理手段と、前記座面信号処理手
段の出力と前記背面信号処理手段の出力とから前記座席
上の人の有無を判定する判定部とを備えたものである。
In order to achieve the first object,
The seating detection apparatus of the present invention includes a seat surface vibration detecting means provided on a seat surface of a seat, a seat surface signal processing means for processing an output signal of the seat surface vibration detecting means, and a seat surface rear surface provided on the back surface of the seat surface. Presence or absence of a person on the seat from the rear surface vibration detecting means, the rear surface signal processing means for processing the output signal of the rear surface vibration detecting means, the output of the seat surface signal processing means and the output of the rear surface signal processing means. And a determination unit for determining.

【0016】また、上記第1、第2、第4の目的を達成
するために、本発明の在席検出装置は、判定部が、座面
信号処理手段の出力が予め決められた座面着座信号閾値
を越え、かつ背面信号処理手段の出力が予め決められた
背面着座信号閾値を越えた場合、信号の持続時間にかか
わらず即座に、人が座席に在席していると判定するもの
である。
In order to achieve the above-mentioned first, second and fourth objects, in the seating detection apparatus of the present invention, the determination section is such that the output of the seating surface signal processing means is seated on the seating surface in advance. When the signal threshold value is exceeded and the output of the back surface signal processing means exceeds a predetermined back seating signal threshold value, it is immediately determined that a person is present in the seat regardless of the duration of the signal. is there.

【0017】また、上記第1、第2の目的を達成するた
めに、本発明の在席検出装置は、判定部が、座面振動検
出手段の出力信号から座席上の人の有無を判定する座面
判定手段と、背面振動検出手段の出力信号から前記座席
上の人の有無を判定する背面判定手段とを備えたもので
ある。
In order to achieve the above first and second objects, in the presence detection apparatus of the present invention, the determination section determines the presence or absence of a person on the seat from the output signal of the seat surface vibration detection means. It is provided with a seat surface determination means and a back surface determination means for determining the presence or absence of a person on the seat from the output signal of the back surface vibration detection means.

【0018】また、上記第1、第2の目的を達成するた
めに、本発明の在席検出装置は、判定部が、座面判定手
段が人が座席に在席していると判定し、かつ、背面判定
手段が人が座席に在席していると判定した場合、人が前
記座席に在席していると判定するものである。
Further, in order to achieve the above first and second objects, in the presence detection apparatus of the present invention, the determination unit determines that the seat surface determination means determines that a person is present in the seat, Further, when the back surface determination means determines that the person is present in the seat, it is determined that the person is present in the seat.

【0019】また、上記第1、第2の目的を達成するた
めに、本発明の在席検出装置は、判定部が、座面判定手
段が人が座席に在席していると判定し、かつ、背面判定
手段が人が座席に不在であると判定した場合、1回前の
判定をそのまま継続するように構成されたものである。
Further, in order to achieve the above first and second objects, in the seating detection apparatus of the present invention, the seating surface determination means determines that the person is seated in the seat, In addition, when the back surface determination means determines that the person is absent in the seat, the determination made one time before is continued as it is.

【0020】また、上記第1の目的を達成するために、
本発明の在席検出装置は、判定部が、座面判定手段が人
が座席に不在であると判定し、かつ、背面判定手段が人
が前記座席に在席していると判定した状態が、あらかじ
め決められた異常時間閾値以上継続した場合、座面振動
検出手段かまたは座面信号処理手段のいずれかまたは両
方が異常であると判定するように構成されたものであ
る。
In order to achieve the above first object,
In the presence detection device of the present invention, the determination unit determines that the seat surface determination unit determines that the person is not present in the seat, and the back surface determination unit determines that the person is present in the seat. When it continues for a predetermined abnormal time threshold or more, either or both of the seat surface vibration detecting means and the seat surface signal processing means are determined to be abnormal.

【0021】また、上記第1、第2の目的を達成するた
めに、本発明の在席検出装置は、判定部が、座面判定手
段が人が座席に在席してると判定し、かつ、背面判定手
段が人が前記座席に不在であると判定した場合、人が前
記座席に不在であると判定するように構成されたもので
ある。
Further, in order to achieve the above first and second objects, in the presence detection apparatus of the present invention, the determination unit determines that the seat surface determination means determines that a person is present in the seat, and When the back surface determination means determines that the person is absent in the seat, it is configured to determine that the person is absent in the seat.

【0022】また、上記第2の目的を達成するために、
本発明の在席検出装置は、判定部が、座面判定手段が人
が座席に不在であると判定し、かつ、背面判定手段が人
が前記座席に在席していると判定した場合、人が前記座
席に子供用補助シートを使用して在席していると判定す
るように構成されたものである。
In order to achieve the second object,
In the presence detection device of the present invention, when the determination unit determines that the seat surface determination unit is not present in the seat, and the rear surface determination unit determines that the person is present in the seat, It is configured to determine that a person is present by using a child auxiliary seat on the seat.

【0023】また、上記第1、第2の目的を達成するた
めに、本発明の在席検出装置は、判定部が、座面判定手
段が人が座席に在席していると判定し、かつ、背面判定
手段が人が座席に不在であると判定した場合、人が座席
に正規でない座り方をして在席していると判定するよう
に構成されたものである。
Further, in order to achieve the above first and second objects, in the seating detection apparatus of the present invention, the determination section determines that the seat surface determination means determines that a person is present in the seat, In addition, when the back surface determination means determines that the person is absent in the seat, the back surface determination means is configured to determine that the person is sitting in the seat in an abnormal seating manner.

【0024】また上記第3の目的を達成するために、本
発明の在席検出装置は、在席と判定した場合に補助的乗
員拘束装置の動作を許可する信号を出力するように構成
されたものである。
Further, in order to achieve the third object, the seat detection apparatus of the present invention is configured to output a signal permitting the operation of the auxiliary occupant restraint system when it is determined that the seat is present. It is a thing.

【0025】また上記第3の目的を達成するために、本
発明の在席検出装置は、不在と判定したときに補助的乗
員拘束装置の動作を不許可にする信号を出力するように
構成されたものである。
Further, in order to achieve the above third object, the seating detection apparatus of the present invention is configured to output a signal for disabling the operation of the auxiliary occupant restraint system when it is determined that the vehicle is absent. It is a thing.

【0026】また、上記第3の目的を達成するために、
本発明の在席検出装置は、人が座席に正規でない座り方
をして在席していると判定した場合に、補助的乗員拘束
装置へ人が座席に正規でない座り方をして在席している
ことを知らせる信号を出力するように構成されたもので
ある。
Further, in order to achieve the third object,
The seat detection device of the present invention, when it is determined that a person is seated in an abnormal seating manner, the auxiliary passenger restraint device is seated by a person seating in an unauthorized seating manner. It is configured to output a signal indicating that it is doing.

【0027】本発明の在席検出装置は、請求項1記載の
構成により次のように作用する。
The presence detecting apparatus of the present invention operates as follows with the configuration of claim 1.

【0028】すなわち人体が座席に着席すると、前記座
席の背面に設けられた振動検出手段に人体の振動が伝達
され、前記振動検出手段は伝達された振動の大きさに応
じて信号を発生する。この信号は信号処理手段に出力さ
れ、前記信号処理手段は、前記振動検出手段の出力を処
理して判定手段に出力し、前記判定手段は、前記信号処
理手段の出力に基づいて、前記座席上の人体の有無を判
定する。
That is, when the human body is seated on the seat, the vibration of the human body is transmitted to the vibration detecting means provided on the back surface of the seat, and the vibration detecting means generates a signal according to the magnitude of the transmitted vibration. This signal is output to the signal processing means, the signal processing means processes the output of the vibration detecting means and outputs it to the judging means, and the judging means, based on the output of the signal processing means, on the seat. The presence or absence of the human body is determined.

【0029】また、本発明の在席検出装置(請求項2)
は、人体が座席に着座すると、前記座席の背面に設けら
れた振動検出手段に人体の振動が伝達され、前記振動検
出手段は伝達された振動の大きさに応じて信号が発生す
るが、着座時には座席への着座動作により大きな信号が
着座動作時間中に連続して前記振動検出手段に伝達され
るため、出力信号もそれに応じて大きな信号が比較的長
時間出力される。この信号は信号処理手段に出力され、
前記信号処理手段は振動検出手段の出力を処理して判定
手段に出力し、前記判定手段は前記信号処理手段の出力
の大きさが着座信号閾値より大きくなる時間が、着座時
間閾値より長く連続した場合に、人が前記座席に在席し
ていると判定する。
Further, the presence detecting device of the present invention (claim 2)
When a human body sits on the seat, the vibration of the human body is transmitted to the vibration detecting means provided on the back surface of the seat, and the vibration detecting means generates a signal according to the magnitude of the transmitted vibration. At times, a large signal is continuously transmitted to the vibration detecting means during the sitting operation time due to the seating operation on the seat, and accordingly, a large signal is output correspondingly for a relatively long time. This signal is output to the signal processing means,
The signal processing means processes the output of the vibration detecting means and outputs it to the determining means, and the determining means continuously outputs the signal processing means for a larger amount of time than the seating signal threshold value longer than the sitting time threshold value. In this case, it is determined that a person is present in the seat.

【0030】また、本発明の在席検出装置(請求項3)
は、人体が座席に着座すると前記座席の背面に設けられ
た振動検出手段に人体の振動が伝達され、前記振動検出
手段は伝達された振動の大きさに応じて信号を発生する
が、安静時では人体の心拍や呼吸による微振動が存在
し、前記振動検出手段は人体が前記背面にもたれている
限りこの微振動に応じた小さな出力を発生する。しか
し、人が離座すると一時的に大きな信号が発生するが、
その後は前記座席の振動源が存在しないため、前記振動
検出手段は信号を発生しなくなる。このような信号が信
号処理手段に出力され、前記信号処理手段は前記振動検
出手段の出力を処理して判定手段に出力し、前記判定手
段は前記信号処理手段の出力の大きさが離座信号閾値よ
り小さくなる時間が離座時間閾値より長く連続した場合
に、人が前記座席に不在であると判定する。
The presence detection device of the present invention (claim 3)
When the human body is seated on the seat, the vibration of the human body is transmitted to the vibration detecting means provided on the back surface of the seat, and the vibration detecting means generates a signal according to the magnitude of the transmitted vibration. Then, there is a slight vibration due to the heartbeat or respiration of the human body, and the vibration detecting means generates a small output corresponding to the slight vibration as long as the human body leans on the back surface. However, when a person leaves, a large signal is generated temporarily,
After that, since there is no vibration source of the seat, the vibration detecting means does not generate a signal. Such a signal is output to the signal processing means, the signal processing means processes the output of the vibration detecting means and outputs it to the judging means, and the judging means determines that the magnitude of the output of the signal processing means is a separation signal. When the time period that is smaller than the threshold value continues for longer than the sitting time threshold value, it is determined that the person is absent in the seat.

【0031】また、本発明の在席検出装置(請求項4)
は、人体が座席に着座すると、前記座席の背面に設けら
れた振動検出手段に人体の振動が伝達され、前記振動検
出手段は伝達された振動の大きさに応じて信号を発生す
る。この信号は、信号処理手段に出力され、前記信号処
理手段は前記振動検出手段の出力を処理して判定手段に
出力し、前記判定手段は、前記信号処理手段の出力に基
づいて、前記座席上の人体の有無を判定し、人が在席し
ていると判定したとき、補助的乗員拘束装置の動作を許
可する信号を出力する。
Further, the presence detection device of the present invention (claim 4).
When a human body is seated on the seat, the vibration of the human body is transmitted to the vibration detecting means provided on the back surface of the seat, and the vibration detecting means generates a signal according to the magnitude of the transmitted vibration. This signal is output to the signal processing means, the signal processing means processes the output of the vibration detecting means and outputs it to the judging means, and the judging means, based on the output of the signal processing means, on the seat. The presence or absence of the human body is determined, and when it is determined that the person is present, a signal permitting the operation of the auxiliary occupant restraint system is output.

【0032】また、本発明の在席検出装置(請求項5)
は、人体が座席に着座すると、前記座席の背面に設けら
れた振動検出手段に人体の振動が伝達され、前記振動検
出手段は、伝達された振動の大きさに応じて信号を発生
する。この信号は信号処理手段に出力され、前記信号処
理手段は前記振動検出手段の出力を処理して判定手段に
出力し、前記判定手段は前記信号処理手段の出力に基づ
いて前記座席上の人体の有無を判定し、人が不在である
と判定したとき、補助的乗員拘束装置の動作を不許可に
する信号を出力する。
Further, the presence detection device of the present invention (claim 5).
When a human body is seated on the seat, the vibration of the human body is transmitted to the vibration detecting means provided on the back surface of the seat, and the vibration detecting means generates a signal according to the magnitude of the transmitted vibration. This signal is output to the signal processing means, the signal processing means processes the output of the vibration detecting means and outputs it to the judging means, and the judging means determines the human body on the seat based on the output of the signal processing means. When the presence or absence is determined and it is determined that the person is absent, a signal for disabling the operation of the auxiliary occupant restraint system is output.

【0033】また、本発明の在席検出装置は、請求項6
記載の構成により次のように作用する。
According to another aspect of the present invention, there is provided an attendance detecting device.
The described structure operates as follows.

【0034】すなわち人体が座席に着座すると、前記座
席の座面に設けられた座面振動検出手段と背面に設けら
れた背面振動検出手段とに人体の振動が伝達され、前記
座面振動検出手段と背面振動検出手段とはそれぞれ伝達
された振動の大きさに応じて信号を発生する。これらの
信号のうち、座面振動検出手段の出力は座面信号処理手
段に出力され、座面信号処理手段は前記座面振動検出手
段の出力を処理して判定部に出力し、一方背面振動検出
手段の出力は背面信号処理手段に出力されて、前記背面
信号処理手段は前記背面振動検出手段の出力を処理して
前記判定部に出力する。前記判定部は前記座面信号処理
手段の出力と前記背面信号処理手段の出力とにもとづい
て、前記座席上の人体の有無を判定する。
That is, when a human body is seated on the seat, the vibration of the human body is transmitted to the seat surface vibration detecting means provided on the seat surface of the seat and the back surface vibration detecting means provided on the back surface, and the seat surface vibration detecting means is provided. The backside vibration detection means generates a signal according to the magnitude of the transmitted vibration. Of these signals, the output of the seat surface vibration detection means is output to the seat surface signal processing means, and the seat surface signal processing means processes the output of the seat surface vibration detection means and outputs it to the determination unit, while the back surface vibration is generated. The output of the detection unit is output to the back surface signal processing unit, and the back surface signal processing unit processes the output of the back surface vibration detection unit and outputs the processed output to the determination unit. The determination unit determines the presence / absence of a human body on the seat based on the outputs of the seat surface signal processing means and the back surface signal processing means.

【0035】また、本発明の在席検出装置(請求項7)
は、人体が座席に着座すると、前記座席の座面に設けら
れた座面振動検出手段と背面に設けられた背面振動検出
手段とに人体の振動が伝達され、前記座面振動検出手段
と前記背面振動検出手段とはそれぞれ伝達された振動の
大きさに応じて信号を発生するが、着座時には前記座席
への着座動作により大きな振動が着座動作時間中連続し
て前記座面振動検出手段と前記背面振動検出手段との両
方に伝達されるため、両者の出力信号もそれに応じて大
きな信号が比較的長時間出力される。これらの信号のう
ち、前記座面振動検出手段の出力は座面信号処理手段に
出力され、前記座面信号処理手段は前記座面振動検出手
段の出力を処理して判定部に出力し、一方前記背面振動
検出手段の出力は背面信号処理手段に出力されて、前記
背面信号処理手段は前記背面振動検出手段の出力を処理
して前記判定部に出力する。前記判定部は、前記座面信
号処理手段の出力信号が座面着座信号閾値より大きく、
かつ前記背面信号処理手段の出力信号が背面着座信号閾
値より大きい場合には、前記座面信号処理手段、および
前記背面信号処理手段の出力信号の持続時間にかかわら
ず、即座に前記座席上に人が着座し在席していると判定
する。
Further, the presence detection device of the present invention (claim 7).
When the human body is seated on the seat, the vibration of the human body is transmitted to the seat surface vibration detection means provided on the seat surface of the seat and the back surface vibration detection means provided on the back surface, and the seat surface vibration detection means and the The backside vibration detecting means generates a signal in accordance with the magnitude of the transmitted vibrations, and when seated, a large vibration is continuously generated during the seating operation time by the seating operation on the seat. Since it is transmitted to both the backside vibration detecting means, a large signal is output corresponding to the output signals of both for a relatively long time. Of these signals, the output of the seat surface vibration detection means is output to the seat surface signal processing means, and the seat surface signal processing means processes the output of the seat surface vibration detection means and outputs it to the determination unit. The output of the backside vibration detection means is output to the backside signal processing means, and the backside signal processing means processes the output of the backside vibration detection means and outputs the output to the determination unit. The determination unit, the output signal of the seat surface signal processing means is larger than the seat surface seating signal threshold value,
And when the output signal of the back signal processing means is larger than the back seating signal threshold value, a person on the seat immediately irrespective of the duration of the output signals of the seat surface signal processing means and the back signal processing means. Is determined to be seated and present.

【0036】また、本発明の在席検出装置(請求項8)
は、人体が座席に着座すると、前記座席の座面に設けら
れた座面振動検出手段と背面に設けられた背面振動検出
手段とに人体の振動が伝達され、前記座面振動検出手段
と前記背面振動検出手段とはそれぞれ伝達された振動の
大きさに応じて信号を発生する。これらの信号のうち、
前記座面振動検出手段の出力は座面信号処理手段に出力
され、前記座面信号処理手段は、前記座面振動検出手段
の出力を処理して判定部に出力し、一方前記背面振動検
出手段の出力は背面信号処理手段に出力されて、前記背
面信号処理手段は前記背面振動検出手段の出力を処理し
て前記判定部に出力する。前記判定部は、座面判定手段
が前記座面信号処理手段の出力のみを用いて前記座席上
の人の有無を判定し、また背面判定手段が前記背面信号
処理手段の出力のみを用いて前記座席上の人の有無を確
定する。
Further, the presence detection device of the present invention (claim 8)
When the human body is seated on the seat, the vibration of the human body is transmitted to the seat surface vibration detection means provided on the seat surface of the seat and the back surface vibration detection means provided on the back surface, and the seat surface vibration detection means and the The backside vibration detecting means generates a signal according to the magnitude of the transmitted vibration. Of these signals,
The output of the seat surface vibration detecting means is output to the seat surface signal processing means, and the seat surface signal processing means processes the output of the seat surface vibration detecting means and outputs it to the judging section, while the back surface vibration detecting means is provided. Is output to the back surface signal processing means, and the back surface signal processing means processes the output of the back surface vibration detection means and outputs the processed output to the determination section. In the determination unit, the seat surface determination unit determines the presence or absence of a person on the seat by using only the output of the seat surface signal processing unit, and the back surface determination unit uses only the output of the back surface signal processing unit. Determine if there is a person on the seat.

【0037】また本発明の在席検出装置(請求項9)
は、人体が座席に着座すると、前記座席の座面に設けら
れた座面振動検出手段と背面に設けられた背面振動検出
手段とに人体の振動が伝達され、前記座面振動検出手段
と前記背面振動検出手段とは、それぞれ伝達された振動
の大きさに応じて信号を発生する。これらの信号のう
ち、前記座面振動検出手段の出力は座面信号処理手段に
出力され、前記座面信号処理手段は前記座面振動検出手
段の出力を処理して判定部に出力し、一方前記背面振動
検出手段の出力は背面信号処理手段の出力を処理して前
記判定部に出力する。前記判定部は、座面判定手段が前
記座面信号処理手段の出力のみを用いて、前記座席上に
人が在席していると判定し、かつ、背面判定手段が、前
記背面信号処理手段の出力のみを用いて前記座席上に人
が在席していると判定した場合、前記座席上に人が在席
していると判定する。
The presence detection device of the present invention (claim 9)
When the human body is seated on the seat, the vibration of the human body is transmitted to the seat surface vibration detection means provided on the seat surface of the seat and the back surface vibration detection means provided on the back surface, and the seat surface vibration detection means and the The backside vibration detecting means generates a signal according to the magnitude of the transmitted vibration. Of these signals, the output of the seat surface vibration detection means is output to the seat surface signal processing means, and the seat surface signal processing means processes the output of the seat surface vibration detection means and outputs it to the determination unit. The output of the backside vibration detecting means processes the output of the backside signal processing means and outputs the processed output to the judging section. In the determination unit, the seat surface determination unit determines that a person is present on the seat by using only the output of the seat surface signal processing unit, and the back surface determination unit includes the back surface signal processing unit. When it is determined that a person is present on the seat using only the output of the above, it is determined that a person is present on the seat.

【0038】また、本発明の在席検出装置(請求項1
0)は、人体が座席に着座すると、前記座席の座面に設
けられた座面振動検出手段と背面に設けられた背面振動
検出手段とに人体の振動が伝達され、前記座面振動検出
手段と前記背面振動検出手段とは、それぞれ伝達された
振動の大きさに応じて信号を発生する。これらの信号の
うち、前記座面振動検出手段の出力は座面信号処理手段
に出力され、前記座面信号処理手段は前記座面振動検出
手段の出力を処理して判定部に出力し、一方前記背面振
動検出手段の出力は背面信号処理手段に出力されて、前
記背面信号処理手段は前記背面振動検出手段の出力を処
理して前記判定部に出力する。前記判定部は、座面判定
手段が前記座面信号処理手段の出力のみを用いて、前記
座席上に人が在席していると判定し、かつ、背面判定手
段が、前記背面信号処理手段の出力のみを用いて前記座
席上に人が不在であると判定した場合、1回前の判定部
の判定をそのまま継続する。
Further, the presence detection device of the present invention (claim 1)
0), when a human body is seated on the seat, the vibration of the human body is transmitted to the seat surface vibration detecting means provided on the seat surface of the seat and the back surface vibration detecting means provided on the back surface, and the seat surface vibration detecting means is provided. The backside vibration detecting means and the backside vibration detecting means generate signals according to the magnitude of the transmitted vibrations. Of these signals, the output of the seat surface vibration detection means is output to the seat surface signal processing means, and the seat surface signal processing means processes the output of the seat surface vibration detection means and outputs it to the determination unit. The output of the backside vibration detection means is output to the backside signal processing means, and the backside signal processing means processes the output of the backside vibration detection means and outputs the output to the determination unit. In the determination unit, the seat surface determination unit determines that a person is present on the seat by using only the output of the seat surface signal processing unit, and the back surface determination unit includes the back surface signal processing unit. If it is determined that the person is absent on the seat by using only the output of, the determination of the determination unit one time before is continued as it is.

【0039】また、本発明の在席検出装置(請求項1
1)は、人体が座席に着座すると、前記座席の座面に設
けられた座面振動検出手段と背面に設けられた背面振動
検出手段とに人体の振動が伝達され、前記座面振動検出
手段と前記背面振動検出手段とは、それぞれ伝達された
振動の大きさに応じて信号を発生する。これらの信号の
うち、前記座面振動検出手段の出力は座面信号処理手段
に出力され、前記座面信号処理手段は前記座面振動検出
手段の出力を処理して判定部に出力し、一方前記背面振
動検出手段の出力は背面信号処理手段に出力されて、前
記背面信号処理手段は前記背面振動検出手段の出力を処
理して前記判定部に出力する。前記判定部は、座面判定
手段が前記座面信号処理手段の出力のみを用いて、前記
座席上に人が不在であると判定し、かつ、背面判定手段
が、前記背面信号処理手段の出力のみを用いて前記座席
上に人が在席していると判定した状態が、予め決められ
た異常時間閾値以上継続した場合、前記座面振動検出手
段かまたは前記座面信号処理手段のどちらか、または両
方が異常と判断する。
Further, the presence detection device of the present invention (claim 1)
1), when a human body is seated on a seat, the vibration of the human body is transmitted to a seat surface vibration detecting means provided on a seat surface of the seat and a back surface vibration detecting means provided on a back surface thereof, and the seat surface vibration detecting means is provided. The backside vibration detecting means and the backside vibration detecting means generate signals according to the magnitude of the transmitted vibrations. Of these signals, the output of the seat surface vibration detection means is output to the seat surface signal processing means, and the seat surface signal processing means processes the output of the seat surface vibration detection means and outputs it to the determination unit. The output of the backside vibration detection means is output to the backside signal processing means, and the backside signal processing means processes the output of the backside vibration detection means and outputs the output to the determination unit. In the determination unit, the seat surface determination unit uses only the output of the seat surface signal processing unit to determine that there is no person on the seat, and the back surface determination unit outputs the output of the back surface signal processing unit. If the state in which it is determined that a person is seated on the seat using only the above continues for a predetermined abnormal time threshold or more, either the seat surface vibration detection means or the seat surface signal processing means is used. , Or both are judged to be abnormal.

【0040】また、本発明の在席検出装置(請求項1
2)は、人体が座席に着座すると、前記座席の座面に設
けられた座面振動検出手段と背面に設けられた背面振動
検出手段とに人体の振動が伝達され、前記座面振動検出
手段と前記背面振動検出手段とは、それぞれ伝達された
振動の大きさに応じて信号を発生する。これらの信号の
うち、前記座面振動検出手段の出力は座面信号処理手段
に出力され、前記座面信号処理手段は前記座面振動検出
手段の出力を処理して判定部に出力し、一方前記背面振
動検出手段の出力は背面信号処理手段に出力されて、前
記背面信号処理手段は前記背面振動検出手段の出力を処
理して前記判定部に出力する。前記判定部は、座面判定
手段が前記座面信号処理手段の出力のみを用いて、前記
座席上に人が不在であると判定し、かつ、背面判定手段
が、前記背面信号処理手段の出力のみを用いて前記座席
上に人が不在であると判定した場合、前記座席上に人が
不在であると判定する。
Further, the presence detection device of the present invention (claim 1)
2), when a human body is seated on a seat, the vibration of the human body is transmitted to a seat surface vibration detecting means provided on a seat surface of the seat and a back surface vibration detecting means provided on a back surface thereof, and the seat surface vibration detecting means is provided. The backside vibration detecting means and the backside vibration detecting means generate signals according to the magnitude of the transmitted vibrations. Of these signals, the output of the seat surface vibration detection means is output to the seat surface signal processing means, and the seat surface signal processing means processes the output of the seat surface vibration detection means and outputs it to the determination unit. The output of the backside vibration detection means is output to the backside signal processing means, and the backside signal processing means processes the output of the backside vibration detection means and outputs the output to the determination unit. In the determination unit, the seat surface determination unit uses only the output of the seat surface signal processing unit to determine that there is no person on the seat, and the back surface determination unit outputs the output of the back surface signal processing unit. When it is determined that the person is absent on the seat by using only, it is determined that the person is absent on the seat.

【0041】また本発明の在席検出装置(請求項13)
は、人体が座席に着座すると、前記座席の座面に設けら
れた座面振動検出手段と背面に設けられた背面振動検出
手段とに人体の振動が伝達され、前記座面振動検出手段
と前記背面振動検出手段とは、それぞれ伝達された振動
の大きさに応じて信号を発生する。これらの信号のう
ち、前記座面振動検出手段の出力は座面信号処理手段に
出力され、前記座面信号処理手段は前記座面振動検出手
段の出力を処理して判定部に出力し、一方前記背面振動
検出手段の出力は背面信号処理手段に出力されて、前記
背面信号処理手段は前記背面振動検出手段の出力を処理
して前記判定部に出力する。前記判定部は、座面判定手
段が前記座面信号処理手段の出力のみを用いて、前記座
席上に人が不在であると判定し、かつ、背面判定手段
が、前記背面信号処理手段の出力のみを用いて前記座席
上に人が在席していると判定した場合、人が座席上に子
供用補助シートを使用して在席していると判定する。
The presence detection device of the present invention (claim 13)
When the human body is seated on the seat, the vibration of the human body is transmitted to the seat surface vibration detection means provided on the seat surface of the seat and the back surface vibration detection means provided on the back surface, and the seat surface vibration detection means and the The backside vibration detecting means generates a signal according to the magnitude of the transmitted vibration. Of these signals, the output of the seat surface vibration detection means is output to the seat surface signal processing means, and the seat surface signal processing means processes the output of the seat surface vibration detection means and outputs it to the determination unit. The output of the backside vibration detection means is output to the backside signal processing means, and the backside signal processing means processes the output of the backside vibration detection means and outputs the output to the determination unit. In the determination unit, the seat surface determination unit uses only the output of the seat surface signal processing unit to determine that there is no person on the seat, and the back surface determination unit outputs the output of the back surface signal processing unit. If it is determined that the person is present on the seat using only the above, it is determined that the person is present using the child auxiliary seat on the seat.

【0042】また本発明の在席検出装置(請求項14)
は、人体が座席に着座すると、前記座席の座面に設けら
れた座面振動検出手段と背面に設けられた背面振動検出
手段とに人体の振動が伝達され、前記座面振動検出手段
と前記背面振動検出手段とは、それぞれ伝達された振動
の大きさに応じて信号を発生する。これらの信号のう
ち、前記座面振動検出手段の出力は座面信号処理手段に
出力され、前記座面信号処理手段は前記座面振動検出手
段の出力を処理して判定部に出力し、一方前記背面振動
検出手段の出力は前記背面信号処理手段に出力されて、
前記背面信号処理手段は背面振動検出手段の出力を処理
して前記判定部に出力する。前記判定部は、座面判定手
段が前記座面信号処理手段の出力のみを用いて、前記座
席上に人が在席していると判定し、かつ、背面判定手段
が、前記背面信号処理手段の出力のみを用いて前記座席
上に人が不在であると判定した場合、人が座席上に正規
でない座り方をして在席していると判定する。
Further, the presence detection device of the present invention (claim 14).
When the human body is seated on the seat, the vibration of the human body is transmitted to the seat surface vibration detection means provided on the seat surface of the seat and the back surface vibration detection means provided on the back surface, and the seat surface vibration detection means and the The backside vibration detecting means generates a signal according to the magnitude of the transmitted vibration. Of these signals, the output of the seat surface vibration detection means is output to the seat surface signal processing means, and the seat surface signal processing means processes the output of the seat surface vibration detection means and outputs it to the determination unit. The output of the backside vibration detection means is output to the backside signal processing means,
The back surface signal processing means processes the output of the back surface vibration detection means and outputs the processed output to the determination section. In the determination unit, the seat surface determination unit determines that a person is present on the seat by using only the output of the seat surface signal processing unit, and the back surface determination unit includes the back surface signal processing unit. If it is determined that the person is absent on the seat by using only the output of, the person is determined to be seated on the seat in an abnormal seating manner.

【0043】また本発明の在席検出装置(請求項15)
は、人体が座席に着座すると、前記座席の座面に設けら
れた座面振動検出手段と背面に設けられた背面振動検出
手段とに人体の振動が伝達され、前記座面振動検出手段
と前記背面振動検出手段とは、それぞれ伝達された振動
の大きさに応じて信号を発生する。これらの信号のう
ち、前記座面振動検出手段の出力は座面信号処理手段に
出力され、前記座面信号処理手段は前記座面振動検出手
段の出力を処理して判定部に出力し、一方前記背面振動
検出手段の出力は背面信号処理手段に出力されて、、前
記背面信号処理手段は前記背面振動検出手段の出力を処
理して前記判定部に出力する。前記判定部は、前記座面
信号処理手段の出力と前記背面信号処理手段の出力とに
基づいて前記座席上の人体の有無を判定し、人が在席し
ていると判定したとき、補助的乗員拘束装置の動作を許
可し、不在であると判定したとき、補助的乗員拘束装置
の動作を不許可とする信号を出力する。
Further, the presence detection device of the present invention (claim 15).
When the human body is seated on the seat, the vibration of the human body is transmitted to the seat surface vibration detection means provided on the seat surface of the seat and the back surface vibration detection means provided on the back surface, and the seat surface vibration detection means and the The backside vibration detecting means generates a signal according to the magnitude of the transmitted vibration. Of these signals, the output of the seat surface vibration detection means is output to the seat surface signal processing means, and the seat surface signal processing means processes the output of the seat surface vibration detection means and outputs it to the determination unit. The output of the backside vibration detecting means is output to the backside signal processing means, and the backside signal processing means processes the output of the backside vibration detecting means and outputs the output to the judging section. The determination unit determines the presence or absence of a human body on the seat based on the output of the seat surface signal processing means and the output of the back surface signal processing means, and when it is determined that a person is present, an auxiliary When the operation of the occupant restraint device is permitted and it is determined that the occupant restraint device is absent, a signal that prohibits the operation of the auxiliary occupant restraint device is output.

【0044】また本発明の在席検出装置(請求項16)
は、人体が座席に着座すると、前記座席の座面に設けら
れた座面振動検出手段と背面に設けられた背面振動検出
手段とに人体の振動が伝達され、前記座面振動検出手段
と前記背面振動検出手段とは、それぞれ伝達された振動
の大きさに応じて信号を発生する。これらの信号のう
ち、前記座面振動検出手段の出力は座面信号処理手段に
出力され、前記座面信号処理手段は前記座面振動検出手
段の出力を処理して判定部に出力し、一方前記背面振動
検出手段の出力は背面信号処理手段に出力されて、前記
背面信号処理手段は前記背面振動検出手段の出力を処理
して前記判定部に出力する。前記判定部は、前記座面信
号処理手段の出力と前記背面信号処理手段の出力とに基
づいて前記座席上の人体の有無を判定し、人が在席して
いると判定したとき、補助的乗員拘束装置の動作を許可
する信号を出力する。
Further, the presence detection device of the present invention (claim 16)
When the human body is seated on the seat, the vibration of the human body is transmitted to the seat surface vibration detection means provided on the seat surface of the seat and the back surface vibration detection means provided on the back surface, and the seat surface vibration detection means and the The backside vibration detecting means generates a signal according to the magnitude of the transmitted vibration. Of these signals, the output of the seat surface vibration detection means is output to the seat surface signal processing means, and the seat surface signal processing means processes the output of the seat surface vibration detection means and outputs it to the determination unit. The output of the backside vibration detection means is output to the backside signal processing means, and the backside signal processing means processes the output of the backside vibration detection means and outputs the output to the determination unit. The determination unit determines the presence or absence of a human body on the seat based on the output of the seat surface signal processing means and the output of the back surface signal processing means, and when it is determined that a person is present, an auxiliary It outputs a signal that permits the operation of the occupant restraint system.

【0045】また本発明の在席検出装置(請求項17)
は、人体が座席に着座すると、前記座席の座面に設けら
れた座面振動検出手段と背面に固定された背面振動検出
手段とに人体の振動が伝達され、前記座面振動検出手段
と前記背面振動検出手段とは、それぞれ伝達された振動
の大きさに応じて信号を発生する。これらの信号のう
ち、前記座面振動検出手段の出力は座面信号処理手段に
出力され、前記座面信号処理手段は前記座面振動検出手
段の出力を処理して判定部に出力し、一方前記背面振動
検出手段の出力は背面信号処理手段に出力されて、前記
背面信号処理手段は背面振動検出手段の出力を処理して
前記判定部に出力する。前記判定部は、前記座面信号処
理手段の出力と前記背面信号処理手段の出力とに基づい
て前記座席上の人体の有無を判定し、人が不在であると
判定したとき、補助的乗員拘束装置の動作を不許可にす
る信号を出力する。
Further, the presence detection device of the present invention (claim 17)
When the human body is seated on the seat, the vibration of the human body is transmitted to the seat surface vibration detection means provided on the seat surface of the seat and the back surface vibration detection means fixed to the back surface, and the seat surface vibration detection means and the The backside vibration detecting means generates a signal according to the magnitude of the transmitted vibration. Of these signals, the output of the seat surface vibration detection means is output to the seat surface signal processing means, and the seat surface signal processing means processes the output of the seat surface vibration detection means and outputs it to the determination unit. The output of the backside vibration detection means is output to the backside signal processing means, and the backside signal processing means processes the output of the backside vibration detection means and outputs the output to the determination unit. The determination unit determines the presence or absence of a human body on the seat based on the output of the seat surface signal processing unit and the output of the back surface signal processing unit, and when it is determined that a person is absent, an auxiliary occupant restraint is performed. Outputs a signal that disallows device operation.

【0046】また本発明の在席検出装置(請求項18)
は、人体が座席に着座すると、前記座席の座面に設けら
れた座面振動検出手段と背面に設けられた背面振動検出
手段とに人体の振動が伝達され、前記座面振動検出手段
と前記背面振動検出手段とは、それぞれ伝達された振動
の大きさに応じて信号を発生する。これらの信号のう
ち、前記座面振動検出手段の出力は座面信号処理手段に
出力され、前記座面信号処理手段は前記座面振動検出手
段の出力を処理して判定部に出力し、一方前記背面振動
検出手段の出力は背面信号処理手段に出力されて、前記
背面信号処理手段は前記背面振動検出手段の出力を処理
して前記判定部に出力する。前記判定部は、前記座面信
号処理手段の出力と前記背面信号処理手段の出力とに基
づいて前記座席上の人体の有無を判定し、人が前記座席
上に正規でない座り方をして在席していると判定した場
合、補助的乗員拘束装置へ、人が前記座席に正規でない
座り方をして在席していることを示す信号を出力する。
Further, the presence detection device of the present invention (claim 18)
When the human body is seated on the seat, the vibration of the human body is transmitted to the seat surface vibration detection means provided on the seat surface of the seat and the back surface vibration detection means provided on the back surface, and the seat surface vibration detection means and the The backside vibration detecting means generates a signal according to the magnitude of the transmitted vibration. Of these signals, the output of the seat surface vibration detection means is output to the seat surface signal processing means, and the seat surface signal processing means processes the output of the seat surface vibration detection means and outputs it to the determination unit. The output of the backside vibration detection means is output to the backside signal processing means, and the backside signal processing means processes the output of the backside vibration detection means and outputs the output to the determination unit. The determination unit determines the presence or absence of a human body on the seat based on the output of the seat surface signal processing unit and the output of the back surface signal processing unit, and a person is sitting on the seat in an unauthorized manner. When it is determined that the person is seated, a signal is output to the auxiliary occupant restraint device, which indicates that the person is seated in an abnormal seating manner on the seat.

【0047】[0047]

【発明の実施の形態】本発明の第1の実施形態を図面と
ともに説明する。図1に本発明の第1の実施形態のブロ
ック図、図2に信号処理手段の出力図を示す。ここで1
は振動検出手段、2は信号処理手段、3は判定手段であ
る。振動検出手段1は、可撓性のある圧電素子を使用し
ており、座席4の背面4−bの表布の内側に配設されて
いる。
BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a block diagram of the first embodiment of the present invention, and FIG. 2 shows an output diagram of the signal processing means. Where 1
Is vibration detection means, 2 is signal processing means, and 3 is determination means. The vibration detecting means 1 uses a flexible piezoelectric element and is arranged inside the front cloth of the back surface 4-b of the seat 4.

【0048】また、信号処理手段1は圧電素子の出力信
号を増幅する増幅手段2−a、増幅手段2−aの出力の
ある特定の周波数成分をろ波するフィルタ2−b、フィ
ルタ2−bからの出力信号を平滑化する平滑化手段2−
cからなつている。
Further, the signal processing means 1 is an amplification means 2-a for amplifying the output signal of the piezoelectric element, a filter 2-b for filtering a specific frequency component of the output of the amplification means 2-a, and a filter 2-b. Smoothing means for smoothing the output signal from
It consists of c.

【0049】まず、座席上に人体がない場合は、圧電素
子1には座席4の下方から伝達される振動のみが加えら
れるが、通常の室内では振動はないので、圧電素子1か
らは信号の発生はなく、図2のA部のように信号処理手
段1の出力はほぼ零になっている。ここで人体が座席4
に着座すると、人の背面により座席4の背面4−bに圧
力が加えられ、座席4の背面4−bの表布の下に配設さ
れた振動検出手段1がその圧力により変形し、圧電効果
により電圧が発生する。着座時には、着座動作による大
きな振動が加えられるため、圧電素子1から大きな信号
が着座動作中の背中が背面4−bに当たっている時間だ
け継続して現れ、信号処理手段2の出力も図2のB部の
ようになる。
First, when there is no human body on the seat, only the vibration transmitted from below the seat 4 is applied to the piezoelectric element 1, but since there is no vibration in a normal room, the piezoelectric element 1 outputs a signal. There is no occurrence, and the output of the signal processing means 1 is almost zero as in the portion A of FIG. Here the human body is seat 4
When seated on, the back surface of the person applies pressure to the back surface 4-b of the seat 4, and the vibration detecting means 1 arranged under the surface cloth of the back surface 4-b of the seat 4 is deformed by the pressure, and the piezoelectric Voltage is generated by the effect. At the time of sitting, since a large vibration is applied by the sitting motion, a large signal from the piezoelectric element 1 continuously appears for the time during which the back during the sitting motion contacts the back surface 4-b, and the output of the signal processing unit 2 is also B in FIG. It becomes like a section.

【0050】従って、本発明の座席検出装置では、人の
着座時の信号処理手段2の出力データから信号の大きさ
を判定する着座信号閾値V1と着座信号閾値V1以上の
大きな信号が着座時間閾値T1以上の時間継続したとき
に人が着座したと判定し、判定を在席に変更している。
図2では、着座信号閾値V1以上の信号がT1以上連続
しており、t1>T1であることから、着座信号閾値V
1以上の出力になってT1後に判定を不在から在席に変
更している。
Therefore, in the seat detection apparatus of the present invention, the seating signal threshold value V1 for determining the magnitude of the signal from the output data of the signal processing means 2 when a person is seated and the seating signal threshold value V1 and a large signal equal to or larger than the seating signal threshold value V1 are the seating time threshold values. It is determined that a person is seated when the time continues for T1 or more, and the determination is changed to seated.
In FIG. 2, since signals of the seating signal threshold value V1 or more are continuous for T1 or more and t1> T1, the seating signal threshold value V
The output is 1 or more, and the determination is changed from absent to present after T1.

【0051】次に、着座後、人が安静にすると、圧電素
子1の発生電圧は小さくなるが、人体には心拍や呼吸に
よる細かな体動があるので、この信号が圧電素子1に伝
達されて小さな信号が発生し、信号処理手段2の出力信
号は図2のC部のようになる。これは人体がいなけれ
ば、座席4上に振動源がなくなるため、出力信号は零に
なるので、この小さな信号の有無から人がいるか否かを
判定できる。
Next, when the person rests after sitting down, the generated voltage of the piezoelectric element 1 decreases, but since the human body has minute movements due to heartbeat and respiration, this signal is transmitted to the piezoelectric element 1. And a small signal is generated, and the output signal of the signal processing means 2 becomes as shown in the part C of FIG. If there is no human body, there is no vibration source on the seat 4, and the output signal becomes zero. Therefore, it is possible to determine whether there is a person based on the presence or absence of this small signal.

【0052】本発明の在席検出装置では、人の安静時の
データから離座信号閾値V2と離座信号閾値V2以下の
信号の継続時間を判定する離座時間閾値T2とを予め算
出しておき、判定手段3では信号処理手段2の出力信号
が離座信号閾値V2以下となる時間が離座時間閾値T2
以上継続したときに、人が離座したと判定し、判定を不
在に変更している。図2では、離座信号閾値V2以下の
信号がT2以上連続した時点で在席から不在に判定を変
更している。
In the seat detection apparatus of the present invention, the separation signal threshold value V2 and the separation time threshold value T2 for determining the duration of a signal equal to or less than the separation signal threshold value V2 are calculated in advance from the data of the person at rest. In the determining means 3, the time when the output signal of the signal processing means 2 becomes equal to or less than the separation signal threshold V2 is the separation time threshold T2.
When the above continues, it is determined that a person has left, and the determination is changed to absent. In FIG. 2, the determination is changed from being seated to being absent when a signal equal to or less than the separation signal threshold V2 continues for T2 or more.

【0053】一方、座席に物が置かれた場合には、座面
4−aには置かれた瞬間に大きな振動が加えられるが、
背面4−bでは減衰して伝達されるので、圧電素子1の
出力も小さくなり、それだけ信号処理手段2の出力も小
さくなる。また、たとえ大きな信号が発生しても、その
継続時間はわずかなので、着座信号閾値V1と着座時間
閾値値T1とを設定することにより、人がいないのに在
席と誤判定する可能性を極端に小さくできる。
On the other hand, when an object is placed on the seat, a large vibration is applied to the seat surface 4-a at the moment it is placed,
Since the rear surface 4-b attenuates and is transmitted, the output of the piezoelectric element 1 also decreases, and the output of the signal processing unit 2 decreases accordingly. Further, even if a large signal is generated, its duration is small. Therefore, by setting the sitting signal threshold value V1 and the sitting time threshold value T1, it is extremely possible to mistakenly determine that a person is present even though there is no person. Can be made very small.

【0054】また本実施形態の在席検出装置では、理髪
店等で子供を座席4に座らせる際に頭部の位置を大人と
同程度にするために座面4−a上方において、その上に
子供を座らせる子供用補助シートを用いる場合でも、子
供の背中は座席4の背面4−bに接触しているため、圧
電素子1は人体の振動により出力を得ることが可能にな
る。
Further, in the seating detection apparatus of the present embodiment, when the child is seated on the seat 4 at a barber shop or the like, in order to make the position of the head about the same as that of an adult, above the seat surface 4-a, the position is set. Even when the child auxiliary seat for seating the child is used, since the back of the child is in contact with the back surface 4-b of the seat 4, the piezoelectric element 1 can obtain an output by the vibration of the human body.

【0055】また図3に本実施形態の在席検出装置を、
補助的乗員拘束装置としてエアバッグ装置8を取り付け
た自動車に設置し、在席検出装置の出力により、エアバ
ッグ装置の制御を行う場合の構成図を示す。ここで、9
は加速度センサ−、5はコントローラであり、このコン
トローラ5は本実施形態の在席検出装置の信号処理手段
2と判定手段3を搭載するもので、判定手段3の出力を
エアバッグ装置8へ出力している。
Further, FIG. 3 shows the presence detection apparatus of this embodiment,
A configuration diagram in the case of being installed in a vehicle equipped with an airbag device 8 as an auxiliary occupant restraint device and controlling the airbag device by the output of the seat detection device is shown. Where 9
Is an acceleration sensor, and 5 is a controller. This controller 5 is equipped with the signal processing means 2 and the judging means 3 of the seating detection apparatus of this embodiment, and outputs the output of the judging means 3 to the airbag device 8. doing.

【0056】本実施形態の在席検出装置では、座席4の
背面4−bに圧電素子1を配設して座席4上の人の有無
を確認しているので、人が前屈みになったり、窓から体
を乗り出すといった正規でない状態で座っている場合
は、座席4の背面4−bに人体の振動が伝達されず、不
在の場合と同様な状態となるため、このような場合にエ
アバッグの動作をさせないシステムが可能となる。
In the presence detection apparatus of this embodiment, the piezoelectric element 1 is arranged on the back surface 4-b of the seat 4 to check the presence / absence of a person on the seat 4, so that the person may bend forward. When sitting in an abnormal state such as leaning out from the window, the vibration of the human body is not transmitted to the back surface 4-b of the seat 4, and the state is the same as when there is no seat. A system that does not operate is possible.

【0057】また人が不在の場合にも、エアバッグ装置
8の動作を不許可とするので、運転席以外の座席用のエ
アバツグ装置で、その座席に乗員がいない場合、不要な
エアバッグ装置の動作を無くすことも可能となる。
Further, since the operation of the airbag device 8 is not permitted even when there is no person, the airbag device for seats other than the driver's seat does not require an unnecessary airbag device if there is no passenger in the seat. It is also possible to eliminate the operation.

【0058】さらに、座席4に子供が座る場合に、シー
トベルトを着用させるために、座面4−aにおいてシー
トベルトが適切な位置に配置されるようにするブースタ
ーシートを用いる場合でも、子供の背中は座席4の背面
4−bに接触しているため、振動検出手段は人体の振動
による振動を出力することが可能で、従って判定手段3
は在席と判定するので、事故時にエアバッグ装置の動作
を許可するシステムを実現できる。
Further, even when a booster seat that allows the seatbelt to be placed at an appropriate position on the seat surface 4-a is used for wearing the seatbelt when the child sits on the seat 4, the child's seatbelt is used. Since the back is in contact with the back surface 4-b of the seat 4, the vibration detecting means can output the vibration due to the vibration of the human body, and therefore the judging means 3
Is determined to be seated, it is possible to realize a system that permits the operation of the airbag device in the event of an accident.

【0059】なおここでは、判定手段が在席と判定した
ときに、エアバッグ装置8の動作を許可し、不在と判定
したとき、エアバッグ装置8の動作を不許可にする信号
を出力しているが、いずれか一方の場合のみ信号を出力
し、エアバッグ装置の側で、その信号を受けたときの
み、許可または不許可に制御するように構成してもよ
い。
Here, when the determination means determines that the seat is present, the operation of the airbag device 8 is permitted, and when it is determined that the seat is absent, a signal is output to prohibit the operation of the airbag device 8. However, it may be configured such that a signal is output only in one of the cases, and the airbag device controls to permit or disallow only when receiving the signal.

【0060】したがって、本実施形態の在席検出装置
は、このような様々な状況に対し、エアバッグ装置8を
的確に制御することを可能にできる。
Therefore, the seating detection apparatus of the present embodiment can accurately control the airbag apparatus 8 in such various situations.

【0061】以上のように、本発明の在席検出装置は、
人体の振動を検出する振動検出手段が座席の背面に配設
されているので、物が置かれた時の振動が振動検出手段
に伝達されにくいため、その振動で一時的に在席と誤判
定することがない。
As described above, the presence detection device of the present invention is
Since the vibration detecting means for detecting the vibration of the human body is arranged on the back surface of the seat, the vibration when an object is placed is difficult to be transmitted to the vibration detecting means, so that the vibration temporarily erroneously determines that the person is seated. There is nothing to do.

【0062】さらに、子供用補助シートを用いる場合で
も、人の存在を検出できる。また、本発明の在席検出装
置は、エアバッグ装置付の自動車に使用した場合、人体
が座席の背面に接触する場合に在席と判定するので、正
規でない座り方をして在席している場合や人が不在の場
合に、エアバッグ装置の動作を不許可にすることができ
る。さらに、ブースターシートを用いた場合でも、人の
在席を確実に検出できるので、衝突時のエアバッグ装置
の動作を適正に行うことができる。
Furthermore, the presence of a person can be detected even when a child auxiliary sheet is used. Further, the seating detection device of the present invention, when used in a vehicle with an airbag device, determines that the seating is present when a human body contacts the back of the seat, and therefore the seating is performed in an irregular seating manner. The operation of the airbag device can be prohibited when the vehicle is present or when the person is absent. Furthermore, even when a booster seat is used, the presence of a person can be detected with certainty, so that the operation of the airbag device during a collision can be performed properly.

【0063】次に、本発明装置の第2の実施形態を図面
とともに説明する。図4に本発明の第2の実施形態のブ
ロック図、図5に座面信号処理手段11と背面信号処理
手段13の出力図を示す。本実施形態の第1の実施形態
と異なる点は、振動検出手段としての圧電素子10、1
2が背面4−bだけでなく、座面4−aにも設置され、
座面4−aに配設された座面の圧電素子10の出力のみ
を処理する座面信号処理手段11と、背面4−bに設置
された背面の圧電素子12の出力のみを処理する背面信
号処理手段13を持つとともに、座席4上の人の有無を
判定する判定部14は、座面信号処理手段11の出力か
ら判定を行う座面判定手段14−aと、背面信号処理手
段13の出力から判定を行う背面判定手段14−bとを
持ち、さらに座面信号処理手段11の出力と背面信号処
理手段13の出力と座面判定手段14−aの出力と背面
判定手段14−bとから座席上の人の有無を決定する判
定決定手段14−cを持つ点にある。
Next, a second embodiment of the device of the present invention will be described with reference to the drawings. FIG. 4 shows a block diagram of the second embodiment of the present invention, and FIG. 5 shows output diagrams of the seat surface signal processing means 11 and the back surface signal processing means 13. The difference of the present embodiment from the first embodiment is that the piezoelectric elements 10 and 1 as the vibration detecting means.
2 is installed not only on the back surface 4-b but also on the seat surface 4-a,
A seat surface signal processing means 11 for processing only the output of the piezoelectric element 10 on the seat surface arranged on the seat surface 4-a, and a rear surface for processing only the output of the piezoelectric element 12 on the rear surface installed on the rear surface 4-b. The determination unit 14 that has the signal processing unit 13 and determines whether or not there is a person on the seat 4 includes the seat surface determination unit 14-a that performs the determination based on the output of the seat surface signal processing unit 11 and the rear surface signal processing unit 13. It has a back surface judging means 14-b for judging from the output, and further has an output of the seat surface signal processing means 11, an output of the back surface signal processing means 13, an output of the seat surface judging means 14-a and a back surface judging means 14-b. Is that it has a determination determination means 14-c for determining the presence or absence of a person on the seat.

【0064】本発明の第1の実施形態の在席検出装置で
は、背面に圧電素子を設置しているので、人が前屈みに
なり背中が背面から離れてしまつた時には、人の信号が
直接伝達されなくなり、圧電素子の出力は小さくなるた
め、人が離座したときとの判別が困難になるという問題
があった。
In the presence detection apparatus according to the first embodiment of the present invention, since the piezoelectric element is installed on the back surface, when the person bends forward and the back is separated from the back surface, the person's signal is directly transmitted. Since this is not done and the output of the piezoelectric element becomes small, there is a problem that it is difficult to distinguish when a person is sitting down.

【0065】そこで、本実施形態の在席検出装置は、背
面4−bだけでなく、座面4−aにも圧電素子12を配
設し、それぞれの圧電素子10、12の出力を処理する
座面信号処理手段11と背面信号処理手段13を持ち、
判定部14でこれらの信号を用いて座席上の人の有無を
判定することによって、前屈みになっても正確な在席検
出ができるようになつている。
Therefore, in the seating detection apparatus of this embodiment, the piezoelectric elements 12 are provided not only on the back surface 4-b but also on the seat surface 4-a, and the outputs of the respective piezoelectric elements 10 and 12 are processed. Having a seat surface signal processing means 11 and a back surface signal processing means 13,
The determination unit 14 uses these signals to determine the presence or absence of a person on the seat, so that accurate presence detection can be performed even when the user bends forward.

【0066】まず、座席4上に人体がない場合は、座面
の圧電素子10と背面の圧電素子12とには、座席4の
下方から伝達される振動のみが加えられるが、通常の室
内では振動はないので、2つの圧電素子からは信号の発
生はなく、図5(a)、(b)のA部のように、信号処
理手段の出力はほぼゼロになつている。
First, when there is no human body on the seat 4, only the vibration transmitted from below the seat 4 is applied to the piezoelectric element 10 on the seat surface and the piezoelectric element 12 on the back surface, but in a normal room. Since there is no vibration, no signal is generated from the two piezoelectric elements, and the output of the signal processing means is almost zero, as in the area A of FIGS. 5 (a) and 5 (b).

【0067】ここで、人体が座席4に着座すると、座席
4の座面4−aと背面4−bとに同時に、着座動作によ
る振動が加えられ、座席4の座面4−aの表布下に配設
された座面の圧電素子10と背面4−bの表布下に配設
された背面の圧電素子12とがその振動により変形し、
圧電効果により電圧が発生する。
Here, when a human body is seated on the seat 4, vibration is applied to the seating surface 4-a and the back surface 4-b of the seat 4 at the same time, so that the seating surface 4-a of the seat 4 is exposed under the cover cloth. The seated piezoelectric element 10 and the back surface piezoelectric element 12 arranged under the surface of the back surface 4-b are deformed by the vibration,
Voltage is generated by the piezoelectric effect.

【0068】着座時には、着座動作による非常に大きな
振動が加えられるため、2つの圧電素子10、12の両
方から大きな信号が発生し、さらに、この信号が着座動
作中の腰部と背中が座席4の座面4−aと背面4−bに
当たっている時間だけ継続して現れ、座面信号処理手段
11と背面信号処理手段13の出力も図5の(a)、
(b)のB部のようになる。本発明の在席検出装置で
は、このような着座時の信号を利用し、座面信号処理手
段11の出力データからその信号の大きさを判定する第
1の座面着座信号閾値値Va11と、背面信号処理手段
13の出力データからその信号の大きさを判定する第1
の背面着座信号閾値Vb11とを算出しておき、判定決
定手段14−cでは、座面信号処理手段11の出力が第
1の座面着座信号閾値値Va11以上でかつ背面信号処
理手段13の出力が第1の背面着座信号閾値Vb11以
上となる場合には、各出力信号の継続時間にかかわら
ず、人が着座したと判定し、即座に判定を在席に変更し
ている。
At the time of sitting, a very large vibration is applied by the sitting motion, so that a large signal is generated from both of the two piezoelectric elements 10 and 12, and further, this signal causes the waist and the back of the seat 4 to move during the sitting motion. It appears continuously only for the time of hitting the seat surface 4-a and the back surface 4-b, and the outputs of the seat surface signal processing means 11 and the back surface signal processing means 13 are also shown in FIG.
It becomes like the part B of (b). In the seating detection apparatus of the present invention, a first seating surface sitting signal threshold value Va11 for determining the magnitude of the signal from the output data of the seating surface signal processing means 11 using such a signal at the time of sitting, First to judge the magnitude of the signal from the output data of the back surface signal processing means 13
And the rear surface seating signal threshold value Vb11 is calculated, and in the determination determining means 14-c, the output of the seat surface signal processing means 11 is equal to or larger than the first seat surface seating signal threshold value Va11 and the output of the rear surface signal processing means 13 is calculated. Is equal to or greater than the first back seating signal threshold Vb11, it is determined that a person is seated regardless of the duration of each output signal, and the determination is immediately changed to seated.

【0069】これにより、判定にかかる時間が、着座時
間閾値の分短縮でき、即座に判定を変化させることがで
きる。なお、このとき、座面判定手段14−aは、人の
着座時の座面信号処理手段11の出力データからあらか
じめ算出されていた信号の大きさを判定する第2の座面
着座信号閾値Va12と座面着座時間閾値Ta1を用い
て、第2の座面着座信号閾値Va12より大きい信号の
持続時間が座面着座時間閾値Ta1以上連続したときに
人が着座したと判定し、また、背面判定手段14−b
も、人の着座時の背面信号処理手段13の出力データか
らあらかじめ算出されていた信号の大きさを判定する第
2の背面着座信号閾値Vb12と背面着座時間閾値Tb
1を用い、第2の背面着座信号閾値Vb12より大きい
信号の継続時間が背面着座時間閾値Tb1以上連続した
ときに人が着座したと判定し、ぞれぞれ判定決定手段1
4−cに出力している。
As a result, the time required for the determination can be shortened by the sitting time threshold value, and the determination can be changed immediately. At this time, the seat surface determination means 14-a determines the magnitude of the signal calculated in advance from the output data of the seat surface signal processing means 11 when a person is sitting on the second seat surface sitting signal threshold Va12. And the seat surface sitting time threshold value Ta1 are used to determine that a person is seated when the duration of a signal larger than the second seat surface sitting signal threshold value Va12 continues for the seat surface sitting time threshold value Ta1 or more, and the back surface determination is performed. Means 14-b
Also, a second rear seating signal threshold value Vb12 and a rear seating time threshold value Tb for judging the magnitude of the signal calculated in advance from the output data of the rear surface signal processing means 13 when a person is seated.
1 is used to determine that a person is seated when the duration of the signal larger than the second rear seating signal threshold value Vb12 continues for the rear seating time threshold value Tb1 or more, and the determination determining means 1 is set for each person.
It is output to 4-c.

【0070】従って、もし、極端にゆっくり着座したと
きのように、座面信号処理手段11と背面信号処理手段
13との出力が同時に第1の座面着座信号閾値Va11
と第1の背面着座信号閾値Vb11を超えなかった場合
でも、座面判定手段14−aと背面判定手段14−bと
から着座を検出することができるので、これを用いて座
席4上の人の有無を検出することができる。ここで、判
定決定手段14−cは、座面判定手段14−aの判定
と、背面判定手段14−bの判定がいずれも在席と判定
した場合に判定を在席と決定している。
Therefore, if the user sits extremely slowly, the outputs of the seat surface signal processing means 11 and the back surface signal processing means 13 are simultaneously the first seat surface seating signal threshold value Va11.
Even when the first rear seating signal threshold value Vb11 is not exceeded, the seating can be detected by the seat surface determining means 14-a and the rear surface determining means 14-b. The presence or absence of can be detected. Here, the determination determining means 14-c determines that the determination is made when both the determination by the seat surface determination means 14-a and the determination by the rear surface determination means 14-b are presence.

【0071】なお、本実施形態の在席検出装置では、第
1の座面着座信号閾値Va11と第2の座面着座信号閾
値Va12、および、第1の背面着座信号閾値Vb11
と第2の背面着座信号閾値Vb12とはそれぞれ同一の
値としている。もちろん、これらはそれぞれ別の値とし
てもよい。
In the seating detection apparatus of this embodiment, the first seating surface sitting signal threshold value Va11, the second seating surface seating signal threshold value Va12, and the first back surface sitting signal threshold value Vb11.
And the second rear seating signal threshold Vb12 have the same value. Of course, these may be different values.

【0072】次に着座後、人が安静にすると、座面の圧
電素子10と背面の圧電素子12との発生電圧は小さく
なるが、人体には心拍や呼吸による細かな体動があるの
で、この信号が座面の圧電素子10と背面の圧電素子1
2とに伝達されて小さな信号が発生し、2つの信号処理
手段の出力信号は図5の(a)、(b)のC部のように
なる。
Next, when the person rests after sitting down, the generated voltage between the piezoelectric element 10 on the seat surface and the piezoelectric element 12 on the back surface becomes small, but since the human body has minute body movements due to heartbeat and respiration, This signal causes the piezoelectric element 10 on the seat surface and the piezoelectric element 1 on the back surface.
2 and a small signal is generated, and the output signals of the two signal processing means are as shown by C in FIGS. 5 (a) and 5 (b).

【0073】これは、人体がいなければ、座席4上に振
動源がなくなるため、出力信号はゼロになるので、この
小さな信号の有無から人がいるか否かを判定できる。
If there is no human body, there is no vibration source on the seat 4, and the output signal becomes zero. Therefore, it is possible to determine whether or not there is a person based on the presence or absence of this small signal.

【0074】本発明の在席検出装置では、人の安静時の
データから、座面判定手段14−aについては、人体の
いない信号状態を判定する座面離座信号閾値Va2と、
座面離座信号閾値Va2以下の信号の継続時間を判定す
る座面離座時間閾値Ta2とを、また、背面判定手段1
4−bについても、人体のいない信号状態を判定する背
面離座信号閾値Vb2と、背面離座信号閾値Vb2以下
の信号の継続時間を判定する背面離座時間閾値Tb2と
をあらかじめ算出しておき、座面判定手段14−aでは
座面信号処理手段11の出力信号が座面離座信号閾値V
a2以下となる時間が座面離座時間閾値Ta2以上継続
したときに人が離座して不在と判定し、また、背面判定
手段14−bでは背面信号処理手段13の出力信号が背
面離座信号閾値Vb2以下となる時間が背面離座時間閾
値Tb2以上継続したときに、人が離座して不在、と判
定して、それぞれ判定決定手段14−cに出力し、判定
決定手段14−cでは、2つの判定手段がともに不在と
判定したとき、不在と判定している。
In the seating detection apparatus of the present invention, the sitting surface separation signal threshold value Va2 for judging the signal state with no human body is used for the seat surface judging means 14-a from the data at the time of rest of the person.
The seat surface separation time threshold value Ta2 for determining the duration of a signal equal to or less than the seat surface separation signal threshold value Va2, and the back surface determination unit 1
Also for 4-b, a backside separation signal threshold Vb2 for determining a signal state with no human body and a backside separation time threshold Tb2 for determining a duration of a signal equal to or less than the backside separation signal threshold Vb2 are calculated in advance. In the seat surface determination means 14-a, the output signal of the seat surface signal processing means 11 is the seat surface separation signal threshold value V.
When the time during which the time becomes a2 or less continues for the sitting surface separation time threshold value Ta2 or more, it is determined that the person is absent and absent, and the back surface determination means 14-b determines that the output signal of the back surface signal processing means 13 is the back surface separation. When the time when the signal threshold value is equal to or less than Vb2 continues for the rear surface separation time threshold value Tb2 or more, it is determined that the person is absent and absent, and each is output to the determination determination unit 14-c, and the determination determination unit 14-c. Then, when both of the two determination means determine that the person is absent, it is determined that the person is absent.

【0075】一方、座席4に物が置かれた場合には、人
の安静時のデータから、座面4−a上には置かれた瞬間
に大きな振動が加えられるが、背面4−bでは減衰して
伝達されるので、座面4−aに配設された背面の座面の
圧電素子10の出力は大きくなるが、背面4−bに配設
された背面の圧電素子12の出力は小さくなり、座面信
号処理手段11と背面信号処理手段13の出力が同時に
各第2の着座信号閾値Va12、Vb12以上で各着座
時間閾値Tb1、Tb2を超えることはなく、また、座
面の圧電素子10の出力のみを用いた座面判定手段14
−aが在席であると判定しても、背面の圧電素子12の
信号のみを用いた背面判定手段14−bは不在と判定す
るので、判定決定手段14−cでは、これらの判定から
着座と誤判定することなく、不在と判定することができ
る。
On the other hand, when an object is placed on the seat 4, a large vibration is applied to the seat surface 4-a at the moment when the object is placed on the seat surface 4-a, but on the back surface 4-b, according to the data of a person resting. Since the output is attenuated and transmitted, the output of the piezoelectric element 10 on the rear seating surface arranged on the seating surface 4-a is large, but the output of the piezoelectric element 12 on the rear surface arranged on the rear surface 4-b is The output of the seat surface signal processing means 11 and the back surface signal processing means 13 does not exceed the seating time threshold values Tb1 and Tb2 at the same time as the second seating signal threshold values Va12 and Vb12 or more at the same time, and the seat surface piezoelectricity is reduced. Seat surface determination means 14 using only the output of the element 10
Even if -a is determined to be seated, the rear surface determination unit 14-b that uses only the signal of the piezoelectric element 12 on the rear surface determines that it is absent. It is possible to determine that the person is absent without making a false determination.

【0076】また、座面判定手段14−aと背面判定手
段14−bの判定が異なる場合もある。まず、座面判定
手段14−aが在席と判定し、背面判定手段14−bが
不在と判定する場合は、仮に人が存在しているとすれ
ば、座面の圧電素子10へ振動が伝達されないような場
所に座っている場合か、または、座面の圧電素子10も
しくは座面信号処理手段11が異常で振動が伝達されて
いても出力信号が得られない場合と考えられる。
In some cases, the judgments of the seat surface determination means 14-a and the back surface determination means 14-b are different. First, when the seat surface determination unit 14-a determines that the seat is present and the back surface determination unit 14-b determines that the seat is absent, if a person is present, the piezoelectric element 10 on the seat surface is vibrated. It is considered that the user is sitting in a place where the vibration is not transmitted, or the output signal cannot be obtained even if the vibration is transmitted due to an abnormality in the piezoelectric element 10 or the cushion signal processing means 11 on the seat.

【0077】前者の場合は、座面の圧電素子10の配設
の問題であり、その最適化により対応できるので、ここ
では取り扱わない。従って、上記のような状態は後者の
場合のみであり、これは、人が継続して存在している限
り継続する。一方、人が不在である場合では、座席に座
つていない人が背面4−bに触れた場合や、座席4を移
動させている場合が考えられ、これらはいずれも一時的
な状態であり、これが長時間継続するとは考えられな
い。したがって、後者のような状態がそれ以上連続して
いるとは考えられない異常時間閾値T3をあらかじめ算
出し、この判定状態が異常時間閾値T3以上継続したと
きには、判定決定手段14−cは座面の圧電素子10
か、もしくは座面信号処理手段11かのいずれかが異常
であると判定している。
In the former case, there is a problem of the arrangement of the piezoelectric element 10 on the seat surface, and since it can be dealt with by the optimization thereof, it will not be dealt with here. Therefore, the above situation is only in the latter case, which continues as long as the person is still present. On the other hand, when the person is absent, it is possible that a person not sitting on the seat touches the back surface 4-b or the seat 4 is moved, and both of them are temporary states. , It is unlikely that this will continue for a long time. Therefore, the abnormal time threshold value T3, which is considered not to be continuous in the latter state, is calculated in advance, and when this determination state continues for the abnormal time threshold value T3 or more, the determination determining means 14-c causes the seat surface to move. Piezoelectric element 10
It is determined that either the seat surface signal processing means 11 is abnormal.

【0078】なお、理髪店等で子供を座席に座らせる際
に、頭部の位置を大人と同程度にするために、座面4−
a上方に置いてその上に子供を座らせる子供用補助シー
トを用いる場合では、座面4−aには振動は伝達されな
いが、子供の背中は座席4の背面4−bに接触している
ため、背面の圧電素子12は人体の振動により出力を得
ることが可能になる。ただし、この場合において上記構
成では、座面判定手段14−aが不在と判定し、背面判
定手段14−bが在席と判定するため、判定決定手段1
4−cは座面の圧電素子10かもしくは座面の信号処理
手段11のいずれかが異常であると判定してしまうの
で、そのままでは適用できない。
When a child is seated on a seat at a barber shop or the like, in order to make the position of the head the same as that of an adult, the seat surface 4-
In the case of using the child auxiliary seat on which the child is seated, the vibration is not transmitted to the seat surface 4-a, but the child's back is in contact with the back surface 4-b of the seat 4. Therefore, the piezoelectric element 12 on the back surface can obtain an output by the vibration of the human body. However, in this case, in the above configuration, the seat surface determination means 14-a determines that the person is absent and the back surface determination means 14-b determines that the person is seated.
Since 4-c determines that either the piezoelectric element 10 on the seat surface or the signal processing means 11 on the seat surface is abnormal, it cannot be applied as it is.

【0079】したがって、このような状況に対処するた
めには、座面判定手段14−aが不在と判定し、背面判
定手段14−bが在席と判定した場合、判定決定手段1
4−cは子供用補助シートを用いて人が在席していると
判定する必要がある。この場合の処理は、本実施形態の
在席検出装置を使用する座席の使用目的により変更して
対応すればよい。
Therefore, in order to cope with such a situation, when the seat surface determination means 14-a determines that the person is absent and the back surface determination means 14-b determines that the person is seated, the determination determination means 1
4-c needs to determine that a person is present using the child auxiliary seat. The processing in this case may be changed according to the purpose of use of the seat using the presence detection device of the present embodiment.

【0080】また、図6に、本実施形態の在席検出装置
を、補助的乗員拘束装置として、エアバッグ装置8が取
り付けられた自動車に設置し、在席検出装置の出力によ
りエアバッグ装置8の制御を行う場合の構成図を示す。
Further, in FIG. 6, the seat detection device of this embodiment is installed as an auxiliary occupant restraint device in a vehicle to which the air bag device 8 is attached, and the airbag device 8 is output by the output of the seat detection device. The block diagram when performing the control of FIG.

【0081】第1の実施形態の在席検出装置をエアバッ
グ装置付きの自動車の座席に設置した場合と同様、判定
決定手段14−cが不在と判定したときにエアバッグ装
置8の動作を不許可とする制御を行つている。但し、本
実施形態の在席検出装置では、人が座席上で、たとえば
前かがみになつたり体を窓から乗り出すといった正規で
ない座り方をして在席している場合は、座面判定手段1
4−aが在席と判定しかつ背面判定手段14−bが不在
と判定するが、このような判定が継続する場合は、人が
正規でない座り方をしている場合と考えられるので、判
定決定手段14−cが、この状態を人が正規でない座り
方をして在席していると判定してエアバッグ装置8に出
力することによって、きめの細かい制御が可能となる。
Similar to the case where the seating detection apparatus of the first embodiment is installed in the seat of the automobile equipped with the air bag apparatus, the operation of the air bag apparatus 8 is disabled when the determination determining means 14-c determines that the vehicle is absent. We are controlling to permit. However, in the presence detection apparatus of the present embodiment, when a person is present on the seat in an abnormal seating manner such as leaning forward or leaning forward from the window, the seat surface determination means 1
4-a determines that the person is seated and the rear surface determination unit 14-b determines that the person is absent. However, if such a determination continues, it is considered that a person is sitting in an abnormal seating mode. The determination unit 14-c determines that a person is sitting in an abnormal seating state and outputs this state to the airbag device 8, whereby fine control can be performed.

【0082】具体的には、人が正規でない座り方をして
在席している場合には、エアバッグ装置8の動作を単に
不許可にするのではなく、人の着座状態に合わせて、エ
アバッグへの気体の充填量を変えるといった制御も可能
になる。
Specifically, when a person is seated in a non-regular seating manner, the operation of the airbag device 8 is not simply prohibited, but according to the seated state of the person, It also becomes possible to control the amount of gas filled in the airbag.

【0083】また、これ以外の判定状態では、判定決定
手段14−cが在席と判定した場合は、エアバッグ装置
8の動作を許可し、判定決定手段14−cが不在と判定
した場合は、エアバッグ装置8の動作を不許可にする信
号を出力している。これにより、人が不在の場合はエア
バッグ装置8の動作を不許可とするので、運転席以外の
座席用のエアバッグ装置8で、その座席に乗員がいない
場合、不要なエアバッグ装置8の動作をなくすことが可
能となる。
Further, in the other determination states, when the determination determining means 14-c determines that the seat is present, the operation of the airbag device 8 is permitted, and when the determination determining means 14-c determines that the seat is absent. , A signal for disabling the operation of the airbag device 8 is output. As a result, when the person is absent, the operation of the airbag device 8 is not permitted. Therefore, in the airbag device 8 for seats other than the driver's seat, when there is no passenger in the seat, unnecessary airbag device 8 It is possible to eliminate the operation.

【0084】さらに、座席4に子供が座る際にシートベ
ルトを着用させるために、座面4−a上方において、シ
ートベルトが適切な位置に配置されるようにするブース
ターシートを用いる場合でも、子供の背中は座席4の背
面4−bに接触しているため、背面の圧電素子12は人
体の振動により出力を得ることが可能で、在席と判定で
き、事故時にエアバツグ装置の動作を許可するシステム
が容易に実現できる。
Further, even if a booster seat is used that allows the seat belt to be placed at an appropriate position above the seat surface 4-a so that the seat belt can be worn when the child sits on the seat 4, the child can use the seat belt. Since its back is in contact with the back surface 4-b of the seat 4, the piezoelectric element 12 on the back surface can obtain an output by vibration of the human body, can be determined to be seated, and allows the operation of the air bag device in the event of an accident. The system can be easily realized.

【0085】但し、座面判定手段14−aが不在と判定
し、背面判定手段14−bが在席と判定したとき、判定
決定手段14−cは1回前の判定を継続するように構成
できるが、上記の場合にはそのままでは適用できない。
従って、このような状況に対処するため、ここでは、座
面判定手段14−aが不在と判定し、背面判定手段14
−bが在席と判定した場合、判定決定手段14−cは子
供用補助シートを用いて人が在席していると判定し、シ
ステムに必要な仕様を満足するように構成できる。
However, when the seating surface determining means 14-a determines that the person is absent and the back surface determining means 14-b determines that the person is seated, the determination determining means 14-c is configured to continue the previous determination. Although it is possible, it cannot be applied as it is in the above case.
Therefore, in order to deal with such a situation, here, the seat surface determination means 14-a determines that the seat surface is absent, and the back surface determination means 14-a is absent.
When it is determined that -b is present, the determination determining unit 14-c can be configured to determine that a person is present using the child auxiliary seat and satisfy the specifications required for the system.

【0086】従って、本実施形態の在席検出装置は、上
記のような様々の状況に対し、エアバッグ装置を的確に
制御することを可能にできる。
Therefore, the seating detection apparatus of the present embodiment can accurately control the airbag apparatus in various situations as described above.

【0087】以上のように、本発明の在席検出装置は、
座席の座面と背面とに人体の振動を検出する振動検出手
段が配設され、それぞれの信号を別々に処理して座席上
の人の有無を判定するので、物が置かれた場合でも一時
的に在席と誤判定することがなく、かつ人が前屈みに座
った場合でもその状態を判定できる。
As described above, the presence detection device of the present invention is
Vibration detection means for detecting vibrations of the human body are provided on the seat surface and the back surface of the seat, and the signals are processed separately to determine the presence / absence of a person on the seat. There is no erroneous determination that the person is seated, and the state can be determined even when a person sits forward.

【0088】また、本発明の在席検出装置は、判定決定
手段が2つの信号処理手段の出力が同時にそれぞれの着
座信号閾値以上となる場合は、信号連続時間にかかわら
ず、人が着座したと判定するので、信号の継続時間を待
つことなく、即座に人の在席を判定できる。
Further, in the presence detection apparatus of the present invention, when the determination determining means outputs the two signal processing means at the same time to be equal to or more than the respective seating signal thresholds, it is determined that the person is seated regardless of the signal continuation time. Since the determination is made, the presence of a person can be immediately determined without waiting for the duration of the signal.

【0089】また、本発明の在席検出装置は、判定決定
手段が座面判定手段と背面判定手段の判定結果が両方と
も在席と判断した場合に人が着座し在席であると判定す
るので、物が置かれた場合でも一時的に在席と誤判定す
ることを少なくできる。
In the presence detecting apparatus of the present invention, when the determination determining means determines that both the determination results of the seat surface determining means and the rear surface determining means are seated, it is determined that a person is seated and seated. Therefore, even when an object is placed, it is possible to reduce the number of temporary misjudgments as being present.

【0090】また、本発明の在席検出装置は、判定決定
手段が座面判定手段と背面判定手段の判定結果が両方と
も不在と判断した場合に人が離座し不在であると判定す
るので、人が正規でない座り方をして着席している場合
でも確実に人の在席を判定できる。
Further, in the presence detection apparatus of the present invention, when the determination determining means determines that both the determination results of the seat surface determining means and the rear surface determining means are absent, it is determined that the person is absent and is absent. The presence of a person can be surely determined even when the person is sitting in an abnormal seating position.

【0091】また、本発明の在席検出装置は、判定決定
手段が、座面判定手段の判定結果が在席でかつ背面判定
手段の判定結果が不在と判定した場合に、1回前の判定
を継続するので、人が不在の時に物が置かれた場合や、
人が在席の場合に一時的に正規でない座り方をした場合
でも、誤判定がない正確な判定ができる。
Further, in the presence detecting apparatus of the present invention, when the determination determining means determines that the determination result of the seat surface determining means is seated and the determination result of the rear surface determining means is absent, the previous determination is made. So, if something is placed when the person is absent,
Even if a person is seated in a non-regular manner temporarily, an accurate determination without erroneous determination can be made.

【0092】また、本発明の在席検出装置は、座面判定
手段の判定結果が不在でかつ背面判定手段の判定結果が
在席と判断した状態が予め決められた異常判定時間閾値
以上連続した場合に、判定決定手段が座面の振動検出手
段かまたは座面信号処理手段のどちらか、または両方を
異常と判断するので、そのような異常が発生した場合
に、異常を検出できる。
Further, in the presence detection apparatus of the present invention, the state in which the determination result of the seat surface determination means is absent and the determination result of the back surface determination means determines that the person is seated is continuously for a predetermined abnormality determination time threshold value or more. In this case, the determination determining means determines that either the seat vibration detection means or the seat surface signal processing means or both are abnormal, so that when such an abnormality occurs, the abnormality can be detected.

【0093】また、本発明の在席検出装置は、判定決定
手段が、座面判定手段の判定結果が不在でかつ背面判定
手段の判定結果が在席と判断とした場合、子供用補助シ
ートを使用して人が存在していると判断するので、子供
用補助シートを用いた場合でも人の存在を検出できる。
Further, in the presence detecting apparatus of the present invention, when the determination determining means determines that the determination result of the seat surface determining means is absent and the determination result of the rear surface determining means determines that the child is present, the child auxiliary seat is selected. Since it is determined that a person is present by using it, the presence of a person can be detected even when the child auxiliary sheet is used.

【0094】また、本発明の在席検出装置は、エアバッ
グ装置付きの自動車に使用した場合、人が正規でない座
り方をして在席している場合に、その状態をエアバッグ
装置に出力するので、着座状態に合わせてエアバッグの
動作を制御するシステムを実現できる。
Further, when the seating detection apparatus of the present invention is used in a vehicle equipped with an airbag apparatus, when a person is seated in an abnormal seating state, the state is output to the airbag apparatus. Therefore, it is possible to realize a system that controls the operation of the airbag in accordance with the seated state.

【0095】また、本発明の在席検出装置は、エアバッ
グ装置付きの自動車に使用した場合、人がいない場合に
エアバッグの動作を不許可にすることができるので、保
護する乗員がいない場合の不要な動作をなくすことがで
きる。
Further, when the seating detection apparatus of the present invention is used in a vehicle equipped with an air bag device, the operation of the air bag can be prohibited when there is no person, so that there is no occupant to protect. It is possible to eliminate unnecessary operation of.

【0096】以上説明したように、本発明の在席検出装
置によれば、座席上の人体の有無の判定が精度良く行え
る。これによって、劇場や自動車内での空席の把握が精
度良く行え、空調や音場制御等に利用できるほか、自動
車等の乗員把握、特にエアバッグ装置等の補助的乗員拘
束装置の理想的な制御を実現できる。
As described above, according to the presence detection apparatus of the present invention, the presence / absence of a human body on the seat can be accurately determined. As a result, vacant seats can be accurately grasped in theaters and automobiles, which can be used for air conditioning and sound field control, and also for occupant grasping of automobiles, etc., especially ideal control of auxiliary occupant restraint devices such as airbag devices. Can be realized.

【0097】[0097]

【発明の効果】以上説明したように、本発明の在席検出
装置によれば、次の効果が得られる。
As described above, according to the presence detection apparatus of the present invention, the following effects can be obtained.

【0098】(1)人体の振動を検出する振動検出手段
が座席の背面に配設されているので、物が置かれたとき
の振動が振動検出手段に伝達されにくいため、物が置か
れた場合の一時的な誤判定のない在席検出装置を提供で
き、さらに、子供用補助シートを使用している場合で
も、人の振動を検出できるので、確実な在席検出のでき
る在席検出装置を提供できる。
(1) Since the vibration detecting means for detecting the vibration of the human body is arranged on the back surface of the seat, the vibration when the object is placed is difficult to be transmitted to the vibration detecting means, so that the object is placed. In this case, a presence detection device that does not cause a temporary misjudgment can be provided. Further, even if a child auxiliary seat is used, the vibration of a person can be detected, so that a presence detection device that can reliably detect the presence is available. Can be provided.

【0099】(2)補助的乗員拘束装置付きの自動車等
の移動装置の座席に使用した場合、人が正規でない座り
方をして在席している場合や人がいない場合に、補助的
乗員拘束装置の動作を不許可にすることができる。
(2) When used as a seat of a moving device such as an automobile with an auxiliary occupant restraint system, when the person is seated in an abnormal seating manner or when there is no person, the auxiliary occupant The operation of the restraint device can be disallowed.

【0100】さらに、ブースターシート上に子供が座っ
ている場合でも、人の振動を検出できるので、補助的乗
員拘束装置の確実な動作を実現する在席検出装置を提供
できる。
Further, even when a child is sitting on the booster seat, the vibration of the person can be detected, so that it is possible to provide a seating detection device which realizes a reliable operation of the auxiliary occupant restraint system.

【0101】(3)座席の座面と背面とに人体の振動を
検出する振動検出手段が配設され、それぞれ信号を別々
に処理して座席上の人の有無を判定するので、物が置か
れた場合でも一時的に在席と誤判定することがなく、且
つ人が正規でない座り方をして在席している場合でも、
確実に人の在席を判定できる在席検出装置を提供でき
る。
(3) Vibration detecting means for detecting vibrations of the human body are provided on the seat surface and the back surface of the seat, and the signals are separately processed to determine the presence / absence of a person on the seat. Even if you are seated, there is no temporary misjudgment that you are seated, and even if you are seated in an abnormal seating style,
It is possible to provide a presence detection device that can reliably determine the presence of a person.

【0102】(4)判定部は、2つの信号処理手段の出
力が同時にそれぞれの着座信号閾値以上となる場合は、
信号連続時間にかかわらず、人が着座したと判定するの
で、信号の継続時間を待つことなく、即座に人の在席を
判定できる在席検出装置を提供できる。
(4) If the outputs of the two signal processing means are equal to or more than the respective seating signal thresholds,
Since it is determined that the person is seated regardless of the signal continuation time, it is possible to provide the presence detection apparatus that can immediately determine the presence of the person without waiting for the duration of the signal.

【0103】(5)判定部は、座面判定手段と背面判定
手段の判定結果が両方とも在席と判断した場合に人が着
座したと判定するので、物が置かれた場合でも一時的に
在席と誤判定することがない在席検出装置を提供でき
る。
(5) Since the judging section judges that a person is seated when both the judgment results of the seating surface judging means and the back surface judging means are seated, even if an object is placed, the judgment is made temporarily. It is possible to provide an occupancy detection device that does not erroneously determine an occupancy.

【0104】(6)判定部は、座面判定手段と背面判定
手段の判定結果が両方とも不在と判断した場合に人が離
座したと判定するので、人が正規でない座り方で在席し
ている場合でも、確実に人の在席を判定できる在席検出
装置を提供できる。
(6) Since the judging section judges that a person has left the seat when both the judgment results of the seating surface judging means and the back surface judging means are absent, the person is not seated in a normal seating manner. Even if the user is present, it is possible to provide the presence detection device that can reliably determine the presence of a person.

【0105】(7)判定部は、座面判定手段の判定結果
が在席でかつ背面判定手段の判定結果が不在と判定した
場合に、1回前の判定を継続するので、人が不在の時に
物が置かれた場合や、人が在席の場合に一時的に正規で
ない座り方をした場合でも誤判定のない正確な判定がで
きる在席検出装置を提供できる。
(7) When the determination result of the seat surface determination means is seated and the determination result of the back surface determination means is absent, the determination section continues the determination one time before, so that the person is absent. It is possible to provide a seating detection apparatus that can make an accurate judgment without an erroneous judgment even when an object is sometimes placed or when a person is seated and the seating style is temporarily irregular.

【0106】(8)判定部は、座面判定手段の判定結果
が不在でかつ背面判定手段の判定結果が在席と判定した
状態が、あらかじめ決められた異常判定時間閾値以上連
続した場合に、座面の振動検出手段かまたは座面の信号
処理手段のどちらか、または両方を異常と判断するの
で、異常時の検出ができる在席検出装置を提供できる。
(8) When the determination result of the seating surface determination means is absent and the determination result of the back surface determination means determines that the person is seated, the determination section continues for a predetermined abnormality determination time threshold value or more, Since it is determined that either the seat vibration detection means or the seat signal processing means or both are abnormal, it is possible to provide an occupant detection device capable of detecting an abnormality.

【0107】(9)判定部は、座面判定手段の判定結果
が不在でかつ背面判定手段の判定結果が在席と判定した
場合、人が子供用補助シートを使用して在席していると
判定するので、子供用補助シートを使用する場合でも人
の在席を検出できる在席検出装置を提供できる。
(9) When the determination result of the seat surface determination means is absent and the determination result of the back surface determination means is present, the determination section determines that a person is present using the child auxiliary seat. Therefore, it is possible to provide the presence detection device that can detect the presence of a person even when the child auxiliary seat is used.

【0108】(10)補助的乗員拘束装置付きの自動車
等の移動装置の座席に使用した場合、人がいない場合に
補助的乗員拘束装置の動作を不許可にすることができる
在席検出装置を提供でき、さらにブースターシート上に
子供が座っている場合でも人の振動を検出できるので、
補助的乗員拘束装置の確実な動作を実現する在席検出装
置を提供できる。
(10) When used as a seat of a moving device such as an automobile having an auxiliary occupant restraint system, an occupant detection apparatus capable of disabling the operation of the auxiliary occupant restraint system when there is no person is used. Can be provided, and even when a child sits on the booster seat, it can detect human vibration,
It is possible to provide an occupant detection device that realizes reliable operation of the auxiliary occupant restraint device.

【0109】(11)補助的乗員拘束装置付きの自動車
等の移動装置の座席に使用した場合、人が正規でない座
り方をして在席している場合に、補助的乗員拘束装置へ
その状態を出力するので、人の着座状態に応じた制御が
可能なシステムを実現する在席検出装置を提供できる。
(11) When used as a seat of a moving device such as an automobile with an auxiliary occupant restraint system, when a person is seated in an abnormal seating manner, the state is changed to the auxiliary occupant restraint system. Is output, it is possible to provide a seating detection device that realizes a system capable of controlling according to the sitting state of a person.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の第1の実施形態における在席検出装置
のブロック図。
FIG. 1 is a block diagram of an occupancy detection device according to a first embodiment of the present invention.

【図2】同装置の信号処理手段の出力図。FIG. 2 is an output diagram of a signal processing unit of the device.

【図3】同装置を使用した自動車の構成図。FIG. 3 is a configuration diagram of an automobile using the device.

【図4】本発明の第2の実施形態における在席検出装置
のブロック図。
FIG. 4 is a block diagram of an occupancy detection device according to a second embodiment of the present invention.

【図5】同装置の信号処理手段の出力図であり、(a)
は座面、(b)は背面の信号処理手段の場合を示す。
FIG. 5 is an output diagram of the signal processing means of the device, FIG.
Shows the case of the signal processing means on the seat surface and (b) shows the case of the back surface.

【図6】同装置を使用した自動車の構成図。FIG. 6 is a configuration diagram of an automobile using the device.

【図7】従来の在席検出装置のブロック図。FIG. 7 is a block diagram of a conventional presence detection device.

【符号の説明】[Explanation of symbols]

1 圧電素子(振動検出手段) 2 信号処理手段 2−a 増幅手段 2−b フィルター 2−c 平滑化手段 3 判定手段 4 座席 4−a 座面 4−b 背面 5 コントローラ 8 エアバッグ装置(補助的乗員拘束装置) 9 加速度センサー 10 座面の圧電素子(振動検出手段) 11 座面信号処理手段 11−a 増幅手段 11−b フィルター 11−c 平滑化手段 12 背面の圧電素子(振動検出手段) 13 座面信号処理手段 13−a 増幅手段 13−b フィルター 14 判定部 14−a 座面判定手段 14−b 背面判定手段 14−c 判定決定手段 DESCRIPTION OF SYMBOLS 1 Piezoelectric element (vibration detection means) 2 Signal processing means 2-a Amplification means 2-b Filter 2-c Smoothing means 3 Judgment means 4 Seat 4-a Seat surface 4-b Rear surface 5 Controller 8 Airbag device (auxiliary Occupant restraint device 9 Accelerometer 10 Piezoelectric element (vibration detecting means) on seat surface 11 Seat surface signal processing means 11-a Amplifying means 11-b Filter 11-c Smoothing means 12 Piezoelectric element on rear surface (vibration detecting means) 13 Seating surface signal processing means 13-a Amplifying means 13-b Filter 14 Judging section 14-a Seating surface judging means 14-b Rear surface judging means 14-c Judgment determining means

フロントページの続き (72)発明者 井上 雅篤 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 岩佐 隆司 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 諸田 巻衛 埼玉県和光市中央1丁目4番1号 株式会 社本田技術研究所内Front page continuation (72) Inventor Masaatsu Inoue 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Takashi Iwasa 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72) Inventor Mamoru Morota 1-4-1 Chuo, Wako City, Saitama Prefecture

Claims (18)

【特許請求の範囲】[Claims] 【請求項1】 座席の背面に設けられた振動検出手段
と、前記振動検出手段の出力信号を処理する信号処理手
段と、前記信号処理手段の出力から前記座席上の人の有
無を判定する判定手段とを備えたことを特徴とする在席
検出装置。
1. A vibration detecting means provided on the back surface of a seat, a signal processing means for processing an output signal of the vibration detecting means, and a determination for judging the presence or absence of a person on the seat from the output of the signal processing means. An occupancy detection apparatus comprising:
【請求項2】 判定手段は、信号処理手段の出力が、予
め決められた着座信号閾値を超えた時間が予め決められ
た着座時間閾値以上連続した場合に、人が座席に在席し
ていると判定するように構成された請求項1記載の在席
検出装置。
2. The determination means is such that a person is present in the seat when the output of the signal processing means continues for a predetermined sitting time threshold value or more for a time exceeding the predetermined seating signal threshold value. The presence detection apparatus according to claim 1, which is configured to determine that.
【請求項3】 判定手段は、信号処理手段の出力が予め
決められた離座信号閾値を下回った時間が、予め決めら
れた離座時間閾値以上連続した場合に人が座席に不在で
あると判定するように構成された請求項1記載の在席検
出装置。
3. The determination means determines that a person is absent in the seat when the time when the output of the signal processing means is below a predetermined separation signal threshold continues for a predetermined separation time threshold or more. The presence detection apparatus according to claim 1, which is configured to make a determination.
【請求項4】 座席は、事故発生時に動作して前記座席
の乗員を拘束し保護する補助的乗員拘束装置付きの自動
車や飛行機等の移動装置上に設置され、判定手段が人が
在席していると判定した場合に、前記補助的乗員拘束装
置の動作を許可する信号を出力するように構成された請
求項1記載の在席検出装置。
4. The seat is installed on a moving device such as an automobile or an airplane having an auxiliary occupant restraint device that operates in the event of an accident and restrains and protects the occupant of the seat, and the determining means is a person present. The presence detection apparatus according to claim 1, wherein the presence detection apparatus is configured to output a signal permitting the operation of the auxiliary occupant restraint apparatus when it is determined that the vehicle is restrained.
【請求項5】 座席は、事故発生時に動作して前記座席
の乗員を拘束し保護する補助的乗員拘束装置付きの自動
車や飛行機等の移動装置上に設置され、判定手段が人が
不在であると判定した場合に、前記補助的乗員拘束装置
の動作を不許可とする信号を出力するように構成された
請求項1記載の在席検出装置。
5. The seat is installed on a moving device such as an automobile or an airplane with an auxiliary occupant restraint device which operates when an accident occurs to restrain and protect the occupant of the seat, and the judging means is absent of a person. The presence detection apparatus according to claim 1, wherein the presence detection apparatus is configured to output a signal that prohibits the operation of the auxiliary occupant restraint apparatus when the determination is made.
【請求項6】 座席の座面に設けられた座面振動検出手
段と、前記座面振動検出手段の出力信号を処理する座面
信号処理手段と、前記座席の背面に設けられた背面振動
検出手段と、前記背面振動検出手段の出力信号を処理す
る背面信号処理手段と、前記座面信号処理手段の出力と
前記背面信号処理手段の出力とから前記座席上の人の有
無を判定する判定部とを備えたことを特徴とする座席検
出装置。
6. A seat surface vibration detection means provided on a seat surface of a seat, a seat surface signal processing means for processing an output signal of the seat surface vibration detection means, and a back surface vibration detection provided on a back surface of the seat. Means, a rear surface signal processing means for processing an output signal of the rear surface vibration detecting means, and a judging portion for judging the presence or absence of a person on the seat from the outputs of the seat surface signal processing means and the rear surface signal processing means. A seat detection device comprising:
【請求項7】 判定部は、座面信号処理手段の出力が予
め決められた座面着座信号閾値を超え、かつ、背面信号
処理手段の出力が予め決められた背面着座信号閾値を超
えた場合、信号の持続時間にかかわらず、即座に人が前
記座席に在席していると判定するように構成された請求
項6記載の在席検出装置。
7. The determination unit, when the output of the seat surface signal processing means exceeds a predetermined seat surface seating signal threshold and the output of the back surface signal processing means exceeds a predetermined back seating signal threshold value. 7. The presence detection apparatus according to claim 6, wherein the presence detection apparatus is configured to immediately determine that a person is present in the seat regardless of the duration of the signal.
【請求項8】 判定部は、座面信号処理手段の出力信号
から座席上の人の有無を判定する座面判定手段と、背面
信号処理手段の出力信号から前記座席上の人の有無を判
定する背面判定手段とを備えるように構成された請求項
6記載の在席検出装置。
8. The determination unit determines the presence or absence of a person on the seat from the output signal of the seat surface signal processing unit, and determines the presence or absence of a person on the seat from the output signal of the back surface signal processing unit. 7. The seating detection apparatus according to claim 6, further comprising: a rear surface determination unit that operates.
【請求項9】 判定部は、座面判定手段が人が座席に在
席していると判定し、かつ、背面判定手段が人が前記座
席に在席していると判定した場合、人が前記座席に在席
していると判定するように構成された請求項8記載の在
席検出装置。
9. The determination unit determines that if the seat surface determination unit determines that a person is present in the seat and the back surface determination unit determines that the person is present in the seat, the person is The presence detection apparatus according to claim 8, which is configured to determine that the user is present in the seat.
【請求項10】 判定部は、座面判定手段が人が座席に
在席していると判定し、かつ、背面判定手段が人が前記
座席に不在であると判定した場合、1回前の判定をその
まま継続するように構成された請求項8記載の在席検出
装置。
10. The determination unit determines that the seat surface determination means determines that a person is present in the seat, and the rear surface determination means determines that the person is absent in the seat, the previous one The presence detection apparatus according to claim 8, which is configured to continue the determination as it is.
【請求項11】 判定部は、座面判定手段が人が座席に
不在であると判定し、かつ、前記背面判定手段が人が前
記座席に在席していると判定した状態が、予め決められ
た異常時間閾値以上継続した場合、座面振動検出手段か
または座面信号処理手段のいずれかまたは両方が異常で
あると判定するように構成された請求項8記載の在席検
出装置。
11. The determination unit determines in advance a state in which the seat surface determination means determines that a person is not present in the seat and the back surface determination means determines that a person is present in the seat. 9. The seating detection apparatus according to claim 8, wherein, when it continues for a predetermined abnormal time threshold or more, either or both of the seat surface vibration detection means and the seat surface signal processing means are determined to be abnormal.
【請求項12】 判定部は、座面判定手段が人が座席に
不在であると判定し、かつ、背面判定手段が人が前記座
席に不在であると判定した場合、人が前記座席に不在で
あると判定するように構成された請求項8記載の在席検
出装置。
12. The determination unit determines that the person is absent in the seat when the seat surface determination unit determines that the person is absent in the seat and the back surface determination unit determines that the person is absent in the seat. 9. The presence detection apparatus according to claim 8, which is configured to determine that
【請求項13】 判定部は、座面判定手段が人が座席に
不在であると判定し、かつ、前記背面判定手段が人が前
記座席に在席していると判定した場合、人が前記座席に
子供用補助シートを使用して在席していると判定するよ
うに構成された請求項8記載の在席検出装置。
13. The determination unit determines that if the seat surface determination unit determines that the person is not present in the seat and the back surface determination unit determines that the person is present in the seat, the person is The presence detection apparatus according to claim 8, wherein the presence detection apparatus is configured to determine that the child is seated by using a child auxiliary seat.
【請求項14】 判定部は、座面判定手段が人が座席に
在席していると判定し、かつ、前記背面判定手段が人が
前記座席に不在であると判定した場合、人が前記座席に
正規でない座り方をして在席していると判定するように
構成された請求項8記載の在席検出装置。
14. The determination unit determines that when the seat surface determination unit determines that a person is present in the seat and the back surface determination unit determines that the person is not present in the seat, the person is The presence detection apparatus according to claim 8, which is configured to determine that the user is seated in a non-regular seating manner.
【請求項15】 座席は、事故発生時に動作して前記座
席の乗員を拘束し保護する補助的乗員拘束装置付きの自
動車や飛行機等の移動装置上に設置され、判定手段が人
が前記座席に在席していると判定した場合に、前記補助
的乗員拘束装置の動作を許可し、判定手段が人が前記座
席に不在であると判定した場合に前記補助的乗員拘束装
置の動作を不許可とする信号を出力するように構成され
たことを特徴とする請求項6記載の在席検出装置。
15. The seat is installed on a moving device such as an automobile or an airplane having an auxiliary occupant restraint device which operates when an accident occurs and restrains and protects an occupant of the seat, and a determination means is set on the seat by a person. When it is determined that the passenger is present, the operation of the auxiliary occupant restraint device is permitted, and when the determination means determines that the person is not present in the seat, the operation of the auxiliary occupant restraint device is not permitted. 7. The presence detection apparatus according to claim 6, wherein the presence detection apparatus is configured to output a signal indicating that
【請求項16】 座席は、事故発生時に動作して前記座
席の乗員を拘束し保護する補助的乗員拘束装置付きの自
動車や飛行機等の移動装置上に設置され、判定手段が人
が前記座席に在席していると判定した場合に、前記補助
的乗員拘束装置の動作を許可する信号を出力するように
構成された請求項6記載の在席検出装置。
16. The seat is installed on a moving device such as an automobile or an airplane having an auxiliary occupant restraint device that operates when an accident occurs and restrains and protects an occupant of the seat, and a determination means is set on the seat by a person. 7. The presence detection apparatus according to claim 6, wherein the presence detection apparatus is configured to output a signal permitting the operation of the auxiliary occupant restraint apparatus when it is determined that the person is seated.
【請求項17】 座席は、事故発生時に動作して前記座
席の乗員を拘束し保護する補助的乗員拘束装置付きの自
動車や飛行機等の移動装置上に設置され、判定手段が人
が前記座席に不在であると判定した場合に、前記補助的
乗員拘束装置の動作を不許可とする信号を出力するよう
に構成された請求項6記載の在席検出装置。
17. The seat is installed on a moving device such as an automobile or an airplane with an auxiliary occupant restraint device that operates when an accident occurs and restrains and protects an occupant of the seat, and the determination means is set on the seat by a person. 7. The presence detection apparatus according to claim 6, which is configured to output a signal that prohibits the operation of the auxiliary occupant restraint system when it is determined that the vehicle is absent.
【請求項18】 座席は、事故発生時に動作して前記座
席の乗員を拘束し保護する補助的乗員拘束装置付きの自
動車や飛行機等の移動装置上に設置され、判定手段が人
が前記座席に正規でない座り方をして在席していると判
定した場合に前記補助的乗員拘束装置へ人が前記座席に
正規でない座り方をして在席していることを知らせる信
号を出力するように構成された請求項6記載の在席検出
装置。
18. The seat is installed on a moving device such as an automobile or an airplane having an auxiliary occupant restraint device which operates when an accident occurs and restrains and protects an occupant of the seat, and a person for determining the seat is installed on the seat. When it is determined that the person is seated in a non-regular manner, the auxiliary occupant restraint device is configured to output a signal to inform that the person is seated in a non-regular manner in the seat. The presence detection apparatus according to claim 6, which is configured.
JP28060095A 1995-10-27 1995-10-27 Presence detection device Expired - Fee Related JP3375472B2 (en)

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CN108116354A (en) * 2017-12-21 2018-06-05 重庆长安汽车股份有限公司 A kind of vehicle and its interior biotic environment method for protecting and system
CN109927662A (en) * 2017-12-18 2019-06-25 长城汽车股份有限公司 Vehicle seat load-bearing perceives vehicle window control unit, system and control method and vehicle
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Publication number Priority date Publication date Assignee Title
JP2001354056A (en) * 2000-06-13 2001-12-25 Matsushita Electric Ind Co Ltd Child seat with seating monitor
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CN105818715A (en) * 2016-03-14 2016-08-03 乐卡汽车智能科技(北京)有限公司 Alarm method and device
CN109927662A (en) * 2017-12-18 2019-06-25 长城汽车股份有限公司 Vehicle seat load-bearing perceives vehicle window control unit, system and control method and vehicle
CN108116354A (en) * 2017-12-21 2018-06-05 重庆长安汽车股份有限公司 A kind of vehicle and its interior biotic environment method for protecting and system
WO2019200372A1 (en) * 2018-04-13 2019-10-17 Tactual Labs Co. Movement enhanced detection

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