JPH05187682A - Controller for air conditioner, human body sensor and air conditioner - Google Patents

Abstract

PURPOSE:To automatically and comfortably control an air conditioner in response to a human movement even if a complicated and difficult setting operation is not executed. CONSTITUTION:The controller for an air conditioner comprises main control means 1b which can alter a set temperature according to an output from position sensing means 12 for sensing a distance from the conditioner in a human existing direction by set temperature altering means 2c, alter an air flowing direction by wind direction altering means 2d and alter an air flowing speed by air flowing speed altering means 2g. Accordingly, even if a complicated setting operation is not executed, a spot operation is automatically conducted in response to a human movement, and comfortable and convenient air conditioning is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to control of an air conditioner that automatically detects a human body when a person approaches an air conditioner and blows the air evenly toward the presence direction of the human body.

[0002]

2. Description of the Related Art FIG. 41 is a block diagram showing a conventional air conditioner controller, and FIG. 42 is a flow chart showing its operation. Reference numeral 1 denotes a remote controller, which comprises a setting means 1a for setting by a human operation and a transmitting means 1b for converting the set information into an infrared signal and transmitting it to an air conditioner. Reference numeral 2 denotes an air conditioner, a receiving means 2a for receiving an infrared signal transmitted from the remote controller 1 and converting it into an electric signal, a main control means 2b for controlling the air conditioner, and a set temperature changing means 2 for changing the set temperature.
c, a wind direction changing means 2d for controlling the wind direction, a wind direction controlling blade 2e capable of changing the blowing direction up, down, left and right, a wind direction controlling blade driving means 2f for driving the wind direction controlling blade 2e, and a wind speed for controlling the blowing speed. Change means 2g and blower 2h for blowing air
And a blower driving means 2i for driving the blower 2h.

Next, the operation will be described with reference to the flowchart shown in FIG. 42. In step 501, the person sets the air conditioning system to the spot operation by operating the remote controller. Next, in step 502, it is determined whether the air conditioning when the spot operation is set is heating or not. When it is heating, the set temperature changing means 2c sets the set temperature higher than usual in step 503. Then, in step 504, the blower driving means 2 is operated by the wind speed changing means 2g.
The blower speed is increased by increasing the rotation speed of the blower 2h through i. When it is determined in step 502 that the air condition is dry / cooling, in step 505 the wind direction changing means 2d causes the wind direction control blade driving means 2f.
The airflow direction is changed to downward by blowing the airflow direction control blade 2e downward. Also, step 5
At 06, the air velocity is reduced by the air velocity changing means 2g. Then, in both dry and cooling / heating, the air conditioning system is set to the spot operation, and it is determined in step 7 whether or not 15 minutes have elapsed since the operation was started. If 15 minutes has not elapsed, the process returns to step 502 again and the same operation as above is performed. After 15 minutes, the spot operation set by the person ends.

In addition to the above, the prior art which the applicant has investigated and found to disclose a technique for controlling the air volume by detecting the direction and distance of the human body is disclosed in Japanese Patent Laid-Open No. 63-143441, the wind direction and the wind speed by the human body detection. Japanese Patent Application Laid-Open No. 63-143448, which discloses a technique for controlling the air temperature, Japanese Patent Application Laid-Open No. 1-147244, which discloses a technique for wind direction, wind speed, and blowing temperature by human body detection, and an area using an infrared sensor. Japanese Patent Application Laid-Open No. 2-21363 discloses a technique for recognizing
No. 5, gazette, and the one that discloses a technique for controlling a blower when a human body is detected in a room by a human body sensor.
There is Japanese Patent No. 78847.

Further, FIG. 43 shows, for example, the actual exploitation 63-15.
It is a figure which shows the conventional human body detection sensor shown by Unexamined-Japanese-Patent No. 0243. In the figure, 2 is an air conditioner, and 3 is a human body detection sensor, which is divided into 3r, 3s, and 3t sections, and 3x, 3y, and 3z infrared detection elements are provided in each section. Reference numeral 4 is an infrared ray incident on the human body detection sensor 3.

Next, the operation will be described. Air conditioner 2
The human body detection sensor 3 provided in is divided into three sections 3r, 3s, and 3t having different directions so that the direction of incident infrared rays can be identified. The infrared detecting elements 3x, 3x,
3y and 3z are provided, and when an incoming infrared ray 4 is sensed, it is transmitted to a control circuit (not shown) provided inside the air conditioner 2 to control the air conditioner 2 according to its control specifications. ..

Further, Japanese Unexamined Patent Publication No. 1-121647 discloses a technique for detecting a human body by driving a shielding member with a single infrared sensor to identify a partial area.

Further, FIG. 44 shows, for example, the actual flat plate 1-8825.
FIG. 45 is a front view showing a conventional air conditioner shown in Japanese Patent Publication No. 1 and FIG. 45 is a front view of a portion where a human body detection sensor is attached to an air conditioner, and FIG. 46 is a portion where a human body detection sensor is attached to an air conditioner. FIG. 47 is a plan view of a room in which an air conditioner equipped with a human body detection sensor that can be adjusted in the left-right direction is installed. FIG.
(B) is a plan view when installed at the left end, FIG. 48 is a plan view of a room in which an air conditioner equipped with a fixed human body detection sensor is installed, (a) is a case where the air conditioner is installed in the center,
FIG. 7B is a plan view showing a case where it is installed at the left end.

In the figure, 3 is a human body detection sensor, 3a
Is a human body detection sensor in which the human body detection sensor 3 mounted in the front direction is rotationally displaced in the right direction, and 3b is a human body detection sensor in which it is rotationally displaced in the left direction. 3c is a detection area where the human body detection sensor 3 can detect a human body in a room,
Reference numeral 3d denotes a non-detection area in which the human body detection sensor 3 cannot detect the human body, and 5 denotes a horizontal adjustment axis which is centered when the human body detection sensor 3 is rotated in the horizontal direction. 6 is a stopper for stopping the rotation of the human body detection sensor, 6a is a stopper for right rotation, and 6b is a stopper for left rotation.

Next, the operation will be described. The horizontal adjustment shaft 5, which is centered when the human body detection sensor 3 rotates in the left-right direction, is above and below the center of the human body detection sensor 3, and a stopper 6 that stops the rotation of the human body detection sensor 3 at a certain rotation.
Is arranged in the upper left upper part of the human body detection sensor 3. Figure 4
6, the human body detection sensor 3 is installed in a direction parallel to the air conditioner 2 and the air conditioner 2 is installed at the left end of the room.
It has a detection area 3c like 7 (a). At this time, since most of the left side of the detection area 3c detects the wall direction, a large non-detection area 3d is generated on the right side of the room. As shown in FIG. 46, when the human body detection sensor 3 is rotated rightward about the left-right adjustment axis until the rotation is stopped by the stopper 6, the air conditioner 2 is installed at the left end of the room.
It has a detection area 3c as shown in (b). Since the detection area 3c is to the right of the air conditioner 2, the non-detection area 3d is relatively small, and more human body detection can be performed.

FIG. 48 is a side sectional view of the conventional hot wire detector disclosed in Japanese Utility Model Laid-Open No. 61-152929.
In the figure, 7 is an infrared detector for detecting infrared rays, 8 is a light emitting diode for indicating the detection direction by light, 9 is a base for fixing the infrared detector 7 and the light emitting diode 8, 10 is a Fresnel lens plate for collecting infrared rays, Reference numeral 11 covers the infrared detector 7 and the light emitting diode 8, and the Fresnel lens plate 1
It is a cover that fixes 0.

Next, the operation of the heat ray detector shown in FIG. 48 will be described. This hot-wire type detector turns on the light emitting diode 8 and moves the Fresnel lens plate 10 in the direction of the arrow B ₂ when it is mounted on a ceiling, a wall surface or the like, and the center of the light emitting diode 8 and the lens of the Fresnel lens plate 10 are moved. Light-emitting diode 8 with the center at the same height on the drawing
The light is emitted as parallel light through the Fresnel lens plate 10 and a person stands at a desired position to check whether the light of the light emitting diode 8 can be seen. That is, the light emitting area Q'of the light emitting diode and the detection area P'of the infrared detector.
Since the deviation is equal to the distance between the mounting positions of the light emitting diode and the infrared detector, it can be considered that the two areas Q ′ and P ′ substantially overlap with each other when viewed from a distance, and therefore the Fresnel lens plate 10 It is possible to confirm whether the standing place is the detection area P'by whether the entire surface of the object is brightly shining (in the radiation area Q '), and the mounting direction is determined based on this area confirmation. ..

Further, in this heat ray type detector, the light emitting diode 8 is turned off and the Fresnel lens plate 10 is moved in the direction of the arrow B ₁ so that the center of the infrared ray detector and the center of the lens are drawn in actual use. At the same height as above, infrared rays emitted from the detection area P ′ are made incident on the infrared detector through the Fresnel lens plate 10 in this state, and the variation amount of the incident infrared rays emits a predetermined detection signal.

[0014]

Since the conventional air conditioner control system is configured as described above, when it is desired to directly apply cold and warm air such as when taking a bath in the summer or changing clothes in the winter, the air conditioner is controlled. There has been a problem that it is difficult to understand by a remote controller or the like in order to change the air flow direction, the air flow rate, and the set temperature.

Further, in order to detect the presence position of the human body, the infrared sensor had to be rotationally driven by the motor. When the infrared sensor is rotationally driven by the motor as described above, there are problems that the infrared sensor vibrates and malfunctions, the human body detection method and configuration become complicated, the human body detection sensor becomes large, and the cost increases. It was In addition, it is very uncomfortable for a person from turning on the power of the air conditioner until the room temperature stabilizes at the set temperature, and wastes power because he forgets to turn it off.

Further, there are problems that three infrared detecting elements are required to identify the three directions, the shape becomes large, it cannot be installed in a narrow place, and it becomes expensive.

Further, when the human body detection area is changed, the human body detection sensor or the infrared detector must be rotated, a rotation mechanism such as a horizontal adjustment shaft and a rotation space for the human body detection sensor are required, and the designability is improved. There was a problem such as a decrease in

Further, the presence or absence of a human body is merely detected by the human body sensor, and the information about the number of people in the room is not taken into consideration. Therefore, even if the number of people increases or decreases, only the air conditioning control with the set air volume can be performed, and the wind direction control can be performed. Since it is not performed, it is not blown to the human body and air conditioning comfort is insufficient. Therefore, it is necessary to detect the number of people in the room and control the wind direction and air volume according to the number of people. Also, the human body detection method and configuration are complicated,
There were problems such as the human body detection sensor becoming large and the cost increasing.

The present invention has been made in order to solve the above problems, and it is possible to automatically and comfortably control an air conditioner according to the movement of a person without performing a troublesome and difficult setting operation. It is an object of the present invention to obtain an air conditioner control device that can reduce the number of setting buttons on the remote controller.

Further, without rotating the infrared sensor by a motor, a part of the detection areas in which the infrared sensors are arranged in parallel are partially overlapped, and the sensor signal detected by the judging means is analyzed and judged to determine the existence of the human body. The object is to obtain a human body detection sensor that can detect the direction and the distance from the air conditioner to a person, and has a simple structure and low cost. Further, another object of the present invention is to realize an automatic air conditioning that does not bother humans by installing a human body detection sensor in an air conditioner and predicting human behavior from the detected data.

Further, it is an object of the present invention to obtain a human body detection sensor which is small in size and low in price while being able to discriminate in three directions by two infrared detection elements, and further to provide a structure suitable for this human body detection sensor. To do.

The detection area can be changed by slightly moving the Fresnel lens without changing the direction of the human body detection sensor, and it is necessary to confirm the detection area because it is not affected by the installation location. Absent. Another object of the present invention is to obtain an air conditioner equipped with a human body detection sensor that can improve the design because it does not require a rotating mechanism or a rotating space.

Further, in order to improve air-conditioning comfort, not only the presence or absence of the human body but also the number of people can be detected and the air-conditioning control adapted to the number of people can be performed. The purpose is to obtain a harmony machine.

[0024]

According to a first aspect of the present invention, there is provided a control device for an air conditioner, wherein two infrared sensors having a constant infrared detection area are provided so that the detection areas partially overlap each other so as to detect the position of the human body. Positioning means for locating and detecting the distance from the output direction of the infrared sensor and the presence direction of the human body, set temperature changing means for changing the set temperature, wind direction and wind speed changing means for changing the blowing direction and blowing speed. A main control means for controlling the set temperature changing means and the wind direction and wind speed changing means from the output of the position detecting means is provided.

A control device for an air conditioner according to a second aspect of the present invention includes a plurality of infrared sensors for detecting infrared rays radiated by a human body.
A human body detection sensor including a Fresnel lens that collects infrared rays on the infrared sensor, an amplification circuit that amplifies the output signal of the infrared sensor, a signal analysis unit that analyzes the output signal of the human body detection sensor, and this signal analysis The behavior predicting means for detecting the presence position of a person from the analysis result of and also predicting the behavior of the person, the wind direction controlling means for controlling the wind direction from the result of the behavior predicting means, the air volume controlling means for controlling the air volume, and the setting. Room temperature control means for controlling the temperature is provided.

According to a third aspect of the present invention, there is provided a human body detection sensor which comprises a plurality of infrared detecting elements and detects the infrared rays emitted from the human body to detect the presence of the human body, while partially overlapping the detection ranges of the plurality of detecting elements. The number of detection areas is larger than the number of detection elements.

In the human body detection sensor according to claim 4, an infrared sensor for detecting infrared rays, a Fresnel lens for condensing the infrared rays on the infrared sensor, an amplification circuit for amplifying a signal from the infrared sensor, and the human body detection sensor for the air conditioner. And a guide groove for sliding and stabilizing the Fresnel lens, and a stop portion for stopping the minute movement of the Fresnel lens.

An air conditioner according to a fifth aspect of the present invention comprises a plurality of infrared sensors installed on the same plane for detecting infrared rays, a Fresnel lens for focusing infrared rays on the infrared sensors,
A human body detection sensor including an amplification circuit that amplifies the output signal of the infrared sensor, and a person number determination unit that determines the number of persons from the output signal of the human body detection sensor.

An air conditioner according to a sixth aspect of the present invention is provided with wind direction control means for controlling the wind direction and air volume control means for controlling the air volume according to the number of people judged by the number of people judging means.

[0030]

According to the first aspect of the present invention, the control device for the air conditioner automatically changes the set temperature, the blowing direction and the blowing speed when a person approaches within a certain distance from the air conditioner by the signal from the position detecting means. Then, a stronger cold / warm air is blown out depending on the position of the human body.

In the control device for an air conditioner according to a second aspect of the present invention, a plurality of infrared sensors having different detection angles are arranged in parallel so that a part of the detection areas are superposed, and the output signal thereof is analyzed by the judging section. , Accumulate and predict human activity from the results, and automatically start operation when the probability of human presence is high, and control wind direction, air volume, and room temperature.

According to the human body detection sensor of claim 3, when a human body exists in a detection area where two infrared detection elements partially overlap each other, both infrared detection elements detect infrared rays,
In other cases, the detection area is enlarged because only one infrared detecting element is used for detection.

In the human body detecting sensor according to the fourth aspect, the Fresnel lens is mounted on the human body detecting sensor so that it can be moved minutely, and the human body detecting area can be changed depending on the installation position.

In the air conditioner according to a fifth aspect of the present invention, a plurality of infrared sensors are arranged on the same plane in the human body detection sensor, infrared rays are collected from a plurality of areas by a Fresnel lens, and the output signal thereof is analyzed and judged. By doing so, the number of people can be detected.

In the air conditioner of the sixth aspect, the air conditioning control is performed by the number of persons judged by the number of people judging means,
Air-conditioning comfort is improved by the wind direction control means for controlling the wind direction and the air volume control means for controlling the air volume.

[0036]

【Example】

Example 1. The first embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 12 is a position detecting means for detecting the presence direction of the human body and the distance from the air conditioner 2, and 2b is the air conditioner 2.
The main control means for performing the main control of 2 is a set temperature changing means for changing the set temperature, 2d is a wind direction changing means for changing the blowing direction, 2e is a wind direction control blade capable of changing the blowing direction vertically and horizontally, and 2f is Wind direction control blade driving means for driving the wind direction control blade 2e, 2g is a wind speed changing means for changing the blowing speed, 2h is a blower for blowing air, and 2i is a blower driving means for driving the blower 2h.

Next, the operation of the first embodiment will be described with reference to the flow chart of FIG. In step 211, the position detecting means 212 detects the existing position of the human body. Then, in step 212, it is determined whether the human body has entered within a certain distance centered on the air conditioner 2. If it is outside the fixed distance, the process returns to step 211, and the operation of detecting the human body position by the position detecting means 212 is repeated again. If it is within a certain distance, the set temperature is changed by the set temperature changing means 2c in step 213. When changing the set temperature, for example, in the case of heating, the set temperature is changed slightly higher than usual, and in the case of dry / cooling, the set temperature is changed slightly lower than usual. Then, in step 214, the blowing direction is changed to the human body direction by the wind direction changing means 2d, and in step 215, the blowing speed is strongly changed by the wind speed changing means 2g.

Next, at step 216, it is determined how many minutes have elapsed since the spot operation started. If a certain period of time has passed, the series of operations is ended. If the fixed time has not elapsed, step 2 again until the fixed time has elapsed.
Return to 12 and perform the same spot operation.

FIG. 3 is a front view of the position detecting means 12,
FIG. 4 is a vertical sectional view of the position detecting means 12 when viewed from the side, and FIG. 5 is a horizontal sectional view of the position detecting means 12 when viewed from above. The position detecting means 12 detects infrared rays radiated by a human body. Detection sensor L3 and infrared sensor R3
, Two Fresnel lenses 10 that focus infrared light on the infrared sensor, and an amplifier board 14 that mounts an amplifier that amplifies the output of the infrared sensor.

FIG. 6 shows a plan view when the position detecting means is mounted on the air conditioner 2 and installed in the room. Reference numeral 12 denotes a position detection unit, and 12a denotes a position detection region in which the position detection unit 12 can detect the presence position of a human body. The human body detection region L12 detects the left side of the room, the human body detection region R12 detects the right side, and position detection. Region L112 and position detection region R1
It consists of two overlapping human body detection areas C12. By using the Fresnel lens 10, the infrared sensor L3 and the infrared sensor R3 are arranged so as to have a human body detection region L12 and a position detection region R12, respectively. The two infrared sensors are mounted on the air conditioner 2 such that their position detection areas overlap each other as shown in FIG.

Next, referring to Table 1, a method of detecting a human body position by the position detecting means 12 will be described. When only the infrared sensor L3 detects infrared rays radiated by the human body, it is determined that the human body exists in the position detection area L12. When only the infrared sensor R3 detects the human body, it is determined that the human body exists in the position detection area L12. When the infrared sensor L3 and the infrared sensor R3 simultaneously detect the human body,
It is determined that the human body is present in the position detection area C12. Then, the fact that the output result of the infrared sensor changes depending on the distance is used. For example, assuming that the infrared sensor has the characteristics as shown in FIG. 7 and the boundary value is 5 V, it is determined that the human body has entered within 1 m from the air conditioner 2 when the output of the infrared sensor is 5 V or more. ..

As described above, since the human body existing region and the distance can be detected, the human body existing position can be estimated.

[0043]

[Table 1]

Example 2. The second embodiment of the present invention will be described below. FIG. 8 is a front view of an air conditioner equipped with a human body detection sensor showing the configuration of the present invention. In FIG. 8, 2 is an air conditioner, 3 is a human body detection sensor, 2e
Is a wind direction changing wing for changing the wind direction, and 2j is an outlet. 9 is a front view of the human body detection sensor, FIG. 10 is a vertical sectional view, and FIG. 11 is a horizontal sectional view. In the figure, reference numeral 3 denotes a human body detection sensor, which is arranged horizontally, and is an infrared sensor L3 that mainly detects infrared rays from the left side, an infrared sensor R3 that mainly detects infrared rays from the right side, an infrared sensor L3 and an infrared sensor R3, respectively. Fresnel lens 10 that collects infrared rays from the three directions of left and right and the center, amplifier circuit 13 that amplifies only human activity frequency band (about 1 Hz) in the output signal of the infrared sensor, infrared sensor and Fresnel lens 10, amplifier circuit A frame 14 for fixing 13 and a mounting jig 15 for installing a human body detection sensor in an air conditioner. FIG. 12 is a plan view of a light distribution diagram showing a detection area when an air conditioner equipped with a human body detection sensor showing the configuration of the present invention is installed indoors, FIG. 13 is a front view, and FIG. 14 is a side view. Reference numeral 16 denotes a human body detection area in which the human body detection sensor can detect a human body. The human body detection area A16, the human body detection area B16,
The human body detection area C16, the human body detection area D16, the human body detection area E16, and the human body detection area F16 are held. A human body detection area A16, a human body detection area B16, and a human body detection area C16 are areas in which the infrared sensor L can detect the human body, and the human body detection area D16, the human body detection area E16,
The human body detection area F16 indicates an area where the infrared sensor R3 can detect a human body. The human body detection area C16 and the human body detection area D16 are overlapped so that both infrared sensors can detect them. Reference numeral 17 is a human body detection angle of the human body detection sensor, which is a human body detection angle A17 and a human body detection angle B1.
7, human body detection angle C17, human body detection angle D17, human body detection angle E17, and human body detection angle F17. The human body detection angle A17, the human body detection angle B17, and the human body detection angle C17 indicate the human body detection angles of the infrared sensor L, and the human body detection angle D17, the human body detection angle E17, and the human body detection angle F17 are the human body detection angles of the infrared sensor R3. Shows. Human body detection angle C17 and human body detection angle D
The detection angles of 17 are superimposed so that they can be detected by both infrared sensors.

FIG. 15 is a control block diagram of the human body detection sensor showing the configuration of the present invention. Reference numeral 18 is an input circuit for interfacing the output signal of the amplifier circuit 13 with an A / D converter, and 19 is an A / D output signal of the human body detection sensor.
A / D converter for conversion, 20 is human body detection sensor 3
The determination unit for determining the presence position of a person from the output signal of (1) includes an analysis unit 20 that analyzes the captured signal, and an estimation unit 20 that estimates the presence position of the human body from the result of the analysis unit. Reference numeral 21 is a memory for storing the date and time and the place where the human body is detected, 22 is a timer for counting the current time, 23 is an output circuit for interfacing the determination unit 20 with each control means, and 24 is a wind direction controlled from the result of the estimation means. The air flow direction control means 25, the air volume control means 25 for controlling the air volume, and the room temperature control means 26 for controlling the set temperature.

FIG. 16 is a flow chart of human body position detection showing the flow of waveform processing of the human body detection sensor of the present invention. FIG. 17 shows the output signal of the infrared sensor L3 and the output signal of the infrared sensor R3 when the human body detection sensor of the present invention detects a human body. FIG. 18 is a discrimination table of the human body existing position by the waveform processing of the output signal of the human body detection sensor in the present invention.

Next, the operation will be described with reference to FIG. 16 with reference to FIGS. In step 321, the human body detection operation is performed by the infrared sensor L3 and the infrared sensor R3 in the detection area shown in FIGS. If the infrared sensor detects a human body in step 322, step 3
23. If no human body is detected, go to step 321.
repeat. In the human body detection method, for example, as shown in FIG. 17, the output signal of the human body detection sensor is set to a certain boundary value (Vth
In the case of d) or more, it can be determined by assuming that the human body is detected. Alternatively, the difference between the current data of the output signal of the human body detection sensor and the previous data is obtained, and it can be determined whether or not the difference is equal to or more than a certain boundary value. Next, in step 323, it is determined whether the infrared sensor L3 has detected a human body. Then, if detected in step 324, L3 = 1, and if not detected, L3
3 = 0. In step 325, infrared sensor R3
Determines whether the human body has been detected. Then, if detected in step 326, R3 = 2, and if not detected, R3 = 0.

Next, at step 327, it is judged if the output signal of the human body detection sensor is equal to or more than a certain boundary value (Pthd). If the output signal is Pthd or more,
In step 328, the frequency of the output signal is determined. The frequency of the output signal can be calculated by obtaining an approximate cycle from the difference between time t1 at the maximum point and time t2 at the minimum point in FIG. The calculated frequency is a boundary value (f
thd) or less. Since the human activity frequency is about 1 Hz, the boundary value fthd is 0.5 to
Select about 0.8 Hz. The calculated frequency is fthd
In the following cases, DIS = 0 is set. If the calculated frequency is equal to or higher than fthd, in step 329,
DIS = 1 when the output signal is Pthd or higher, and DIS = 0 when the output signal is Pthd or lower. Therefore, the following can be detected from the values of DIR (sum of L3 and R3) and DIS. When both sensors detect at the same time, the person exists in the center direction where both detection areas overlap, and when only the infrared sensor L3 is detected, the person moves to the left, and when only the infrared sensor R3 detects, the person moves to the right. Can be considered to exist. Also, the output is Pt
If the frequency of the output signal is greater than hd and is equal to or higher than fthd and is in the activity frequency band of a person, it can be considered that a person is present near the air conditioner. Therefore, as shown in FIG. 18, the direction and the distance from the air conditioner can be determined, and the presence position of the human body in the room can be detected. Finally, step 3
At 30, the DIR (sum of L3 and R3), the DIS data, and the date and time when the human body is detected are stored in the memory.

Example 3. FIG. 19 is a flowchart showing the control device for the air conditioner according to the third embodiment of the present invention. FIG. 20 shows the number of times of human body detection by time zone, which shows the number of times the human body detection sensor according to the present invention detects a human body for each 30-minute time zone. (A) is the expected number of human body detections today, (b) is the number of human body detections today,
(C) is the expected number of human body detections after one week. Next in FIG.
The operation will be described with reference to FIGS. In step 431, a human body detection operation is performed. As a result, in step 432, it is determined whether a human body is detected. If no person is detected, step 4
In 33, human body detection data for one day is stored separately from other data, and one week's worth of data is accumulated. Then, in step 434, the main air conditioning is started. The blowing direction is the direction in which the human body is detected. Next, in step 435, when the predicted human body detection data is above a certain boundary value (Cthd), it is predicted that the existence probability of a person is high, and when it is below Cthd, the existence probability of a person is predicted to be low. When it is predicted that the existence probability is high in step 435, it is determined in step 436 whether it is 30 minutes before the human body detection predicted time, and when it is 30 minutes before the predicted time, preliminary air conditioning is started in step 437. .. The blowing direction is
The direction of location is the one with the highest number of detections in the forecast data.

When it is predicted that the existence probability is low in step 435, the current air conditioning mode is determined in step 438. If the main air conditioning is currently in progress, the preliminary air conditioning for 30 minutes is started in step 437.
If preliminary air-conditioning is currently in progress or is stopped, step 44
At 0, the preliminary air conditioning is stopped. In step 439, it is determined whether 30 minutes have passed since the start of the preliminary air conditioning. After 30 minutes, the preliminary air conditioning is stopped in step 440.

The method of calculating the above-mentioned predicted human body detection data is as follows. The human body detection data and the detection time data actually detected by the human body detection sensor are sequentially accumulated in the memory in step 433. The data accumulated in the memory is processed into time-series data of the number of human body detections by presence position every 30 minutes as shown in FIG. 20, and the data is stored again in the memory together with the date and time. The stored actual measurement data in FIG. 20B is added to the human body detection data predicted one week before in FIG. 20A and averaged to calculate the predicted value. At this time, it is possible to change the influence of the actually measured human body detection data on the predicted value by weighting and averaging the predicted data as shown in FIG. For example, in FIG.
In (c), the predicted data is 2 to 1 against the measured data.
Are weighted. The boundary value (Ct
If it is equal to or higher than hd), it is determined that the probability of existence of a person is high, and if it is equal to or lower than the boundary value (Cthd), it is determined that the probability of existence of a person is low. In FIG. 20C, for example, Cthd is set to 5 times.

Example 4. In the third embodiment, the forecast is made every week, but it is also possible to make a human body detection forecast for the next day, every month, or every year depending on the data arrangement method.

Example 5. In the third embodiment, the predicted data is created based only on the actually measured data, but a data input means may be provided so that the contents of the memory can be input and edited.

Example 6. Embodiment 6 of the present invention will be described below with reference to the drawings. In FIG. 21, the air conditioner 2 has 2
A human body detection sensor 3 having one infrared detection element is provided, and is arranged so as to divide the interior of the room into three sections A, B, and C. The human body detection sensor 3 detects the infrared rays 5 radiated by the human body if a human 27 is present inside the room, determines which area A, B, or C is present, and the air conditioner 2 controls the air conditioning of the area. To do so. FIG. 22.
FIG. 3 is a diagram for explaining the human body detection sensor 3 in detail. The two infrared detection elements L3, R3 are attached to the human body detection sensor 3 at an angle, and the detection areas of the two infrared detection elements L3, R3 are arranged so as to partially overlap with each other. An area detected by only the infrared detection element R3 is B, and an area detected by both the infrared detection element and R3 at the same time is C.

Next, the operation will be described. In FIG. 21, the size of the room to which the air conditioner 2 called room air conditioner is attached is usually 8 to 12 tatami mats, and if four or more people enter this size, it may be used throughout the room. Many. However, when the room is used by a small number of people of 1 to 3, there are many cases where the room is biased toward the room. Further, considering the control range of the air conditioner 2, it is appropriate to divide the haze into three parts, the right side, the central part and the left side, and it is more efficient and comfortable to control the air conditioning for each part, and it also saves energy. When a person enters the room, the human body detection sensor 3 detects the human body and simultaneously counts the number of people. Further, as shown in FIG. 23, since the detection level of the human body detection sensor 3 changes depending on the number of people in the detection area, the number of people existing in that area can also be detected. Next, let us assume that the number of people in the room counted by the human body detection sensor 3 is n, the signal detected by the infrared detection element L3 is classified as a, and the signal detected by the infrared detection element R3 is classified as b, and the human placement is estimated. And becomes as shown in FIG. That is, the number of people detected by the infrared detection element is n, and the number of people detected by the infrared detection element R3 is 0 (a = n
And if b = 0), there are only people in area A. Similarly, the number of people detected by the infrared detection element L3 is 0, and the number of people detected by the infrared detection element R3 is n (a = 0 and b = n).
Then there are people only in B area. Next, when the number of persons detected by the infrared detecting element L3 and the infrared detecting element R3 is n (a = b = n), there are only persons in the area C. Next, the number of people detected by the infrared detection element L3 is n,
When the number of people detected by the infrared detection element R3 is less than n (a = n and 0 <b <n), people are present in the areas A and C. Similarly, when the number of people detected by the infrared detection element R3 is n and the number of people detected by the infrared detection element L3 is smaller than n (b = n and 0 <a <n), the number of people in the areas B and C is increased. Exists. Otherwise, the people present are scattered throughout the room.

Next, the flow of this operation will be described with reference to the flowchart of FIG. When the program starts at step 101, the number of people is counted at step 102. If the person does not exist in step 103, the process proceeds to step 107, and the processing when the person does not exist (OFF in this case) is performed. In step 103, if n ≠ 0, that is, if a person exists, the area of the room 1 in which the person exists is estimated by the following routine. First, at step 104a
= N, it is determined in step 105 whether b = n. If YES, a = b = n and C in step 106.
It is determined that there are people only in the NO area. Also step 1
If b ≠ n in 05, it is determined in step 108 whether b = 0. If YES, it is determined in step 109 that there is a person only in A. If b ≠ 0 in step 108, it is determined in step 110 that there are people in A and C. Further, if a ≠ n in step 104, go to step 111, and if b = n, it is determined in step 112 whether a is 0. If YES, it is determined in step 113 that there is a person only in the area B, and NO. Then, in step 114, it can be determined that there are people in B and C. And step 111
If b ≠ n in, it means that there are people in all areas, and it is judged in step 115 that there are people at A, B, and C. Finally step 1 with the results of these condition judgments
A control signal is output at 16 and is fed back to the beginning.

Example 7. FIG. 26 shows Example 7 of the human body detection sensor 3. In this case, two infrared detecting elements L3 and R3 are arranged on a flat substrate, and the partition plate 6 is interposed between them.
There is. Therefore, infrared rays are input at an angle affected by the partition plate 6. As a result, three sections A, B and C are formed as in the case of FIG.

Example 8. FIG. 27 shows Example 6 of the human body detection sensor. Also in this case, two infrared detecting elements L3 and R3 are arranged on the flat substrate. Reference numeral 10 is a Fresnel lens. The Fresnel lens 10 is a lens in which fine grooves are carved, and the refraction angle of incident light can be freely selected and designed. Therefore, three sections A, B, and C are formed as in the case of FIG.

Example 9. The ninth embodiment of the present invention will be described below with reference to the drawings. 28 is a front view of the human body detection sensor, FIG. 29 is a vertical sectional view, and FIG. 30 is a horizontal sectional view.
In FIG. 31, (a) is a horizontal sectional view of a human body detection sensor and a human body detection area when a Fresnel lens according to the seventh embodiment of the present invention is installed in the center, and (b) is a human body when the Fresnel lens is installed at the right end. The horizontal sectional view of a detection sensor and a human body detection area are shown. FIG. 32 is a horizontal sectional view and a human body detection area diagram of the room when the air conditioner according to the seventh embodiment of the present invention is installed in the room. (A) shows the case where the air conditioner is installed in the left corner of the room, (b) shows the case where the air conditioner is installed in the center of the room, and (c) shows the case where the air conditioner is installed in the right corner of the room. Reference numeral 3 is a human body detection sensor for detecting a human body by detecting infrared rays radiated by the human body. The infrared sensor 3 detects infrared rays and the infrared sensor 3 detects infrared rays.
The Fresnel lens 10 for condensing the light, the infrared sensor 3, and the amplification circuit board 15a for amplifying a minute signal from the infrared sensor 3, the frame 14 for fixing the circuit board 15a, and the human body detection sensor 3 for the air conditioner. A mounting jig 15 for mounting, a lateral guide groove 14b for laterally sliding the Fresnel lens 10, a vertical guide groove 14c for stabilizing the Fresnel lens 10 in the vertical direction, and a lens stopper recess for stopping the sliding of the Fresnel lens 10. 10a and a lens stop convex portion 10b. 2 is an air conditioner, 3c is a detection area where the human body detection sensor 3 can detect a human body, and 3d is a non-detection area where the human body detection sensor 3 cannot detect a human body.

As shown in FIG. 31, a lateral guide groove 14a having the width of the Fresnel lens 10 is engraved at the tip of the frame 14. The guide groove 14a has substantially the same length as the Fresnel lens 10 in the vertical direction, and has such a length that the Fresnel lens 10 can be slightly displaced in the horizontal direction in the horizontal direction. The Fresnel lens 10 that collects infrared rays is installed in the lateral guide groove 14a and the vertical guide groove 14b. The distance from the Fresnel lens 10 to the infrared sensor L3 is always kept at the focal length of the Fresnel lens 10. When the Fresnel lens 10 is installed on the left side of the frame 14 as shown in FIG. 31A, the detection area 3c capable of detecting the human body is located on the right side of the human body detection sensor 1. Therefore, even when the air conditioner 2a is installed on the left side of the room as shown in FIG. 32A, the central part of the room is covered with the detection area 3c. The non-detection area is only the wall where the air conditioner is installed and its vicinity. Figure 31
When the Fresnel lens 10 is installed in the center of the frame 14 as in (b), the detection area 3c capable of detecting a human body is in the front direction of the human body detection sensor 1. Therefore, FIG.
Even when the air conditioner 2 is installed in the center of the room as shown in 2 (b), the center of the room is covered with the detection area 3c. The non-detection area 3d is on both sides of the air conditioner and in the vicinity thereof. When the Fresnel lens 10 is placed on the frame 14 with a slight displacement to the right until it stops by the lens stop as shown in FIG. 31B, the detection area 3c capable of detecting the human body is located in the diagonally right direction of the human body detection sensor 3. .. Therefore, even when the air conditioner 2 is installed on the right side of the room as shown in FIG. 32 (c), the central part of the room is covered with the detection area 3c. The non-detection area 3d is only on the wall where the air conditioner 2 is installed and in the vicinity thereof.

Example 10. Hereinafter, Example 10 of the present invention
Will be described. FIG. 33 is a front view of an air conditioner equipped with a human body detection sensor showing the configuration of the present invention.
In FIG. 1, 3 is a human body detection sensor, 2 is an indoor unit of an air conditioner, 2e is a wind direction control blade for changing the wind direction, and 2j is an outlet.

FIG. 34 is a front view (a) of the human body detection sensor 3, a vertical sectional view (b) with respect to the front view (a), and a horizontal sectional view (c) with respect to the front view (a). In FIG. 34, reference numeral 3 is a human body detection sensor, which is arranged horizontally, and is an infrared sensor L3 that mainly detects infrared rays from the left side, an infrared sensor R3 that mainly detects infrared rays from the right side, an infrared sensor L3 and an infrared sensor R3. Left and right and center 3 respectively
In the output signals of the Fresnel lens 10 and the infrared sensor 3 that collect infrared rays from the direction, the human activity frequency band (1 Hz
Amplification circuit 13 that only amplifies), infrared sensor 3
And a frame 14 for fixing the Fresnel lens 10, the amplification circuit 13, and a mounting jig 15 for mounting the human body detection sensor 3 in the air conditioner.

FIG. 35 is a control block diagram of a human body detection sensor according to the tenth embodiment of the present invention. Reference numeral 18 is an input circuit for receiving the output signal of the amplifier circuit 13, 19 is an A / D converter for A / D converting the output of the input circuit 18, and 20 is the output of the front A / D converter 19 to determine the number of persons. The number-of-people determination unit includes an analysis unit 20a that analyzes the captured signal, and an estimation unit 20b that estimates the number of people from the result of the analysis unit 20a. Reference numeral 21 denotes a memory for storing data, which includes a memory 21a for storing the non-detection time and a memory 21b for storing the result of the number of persons determination. Reference numeral 22 is a timer for counting the current time, 23 is an output circuit for interfacing the number-of-people determination unit 20 and each control means, 24 is a wind direction control means for controlling the wind direction from the result of the number of people determination section 20, and 2e is a wind direction control means 24. The louver 25 controls the air volume, the air volume control means 25 controls the air volume based on the result of the number-of-people determination unit 20, and the reference numeral 2h denotes the fan controlled by the air volume control means 25.

FIG. 36 is a flow chart for non-detection time detection showing the flow of signal processing of the human body detection sensor of the present invention.

FIG. 37 is a flow chart showing the flow of the signal processing of the human body detecting sensor of the present invention, for judging the number of persons.

FIG. 38 is a diagram showing the presence / absence of a person for one minute and the elapsed time of the human body detection sensor according to the present invention.

FIG. 39 is a flow chart showing the specific operation control of the air conditioner using the human body detection sensor of the present invention.

FIG. 8 is a number-of-people discrimination table in which the results of the number-of-people determination of the left and right infrared sensors L3 and R3 according to the present invention are combined.

Next, the operation will be described with reference to FIG. 38 in accordance with FIGS. First, the principle of detecting the number of people will be described. In order to detect the number of people, the non-detection time in 1 minute is detected. The non-detection time is one minute in which no human body is detected. For example, in FIG. 38, the infrared sensor L3
The non-detection time of 1 minute is the sum of the non-detection times of a, b, and c, and the non-detection time of 1 minute of the infrared sensor R3 is the non-detection time of d, e, f, g, h. It will be what you did. Therefore, if there are many people, the left and right infrared sensors L
3, the output signals from R3 increase and the non-detection time becomes shorter. When the number of people is small, left and right infrared sensors L3 and R3
The output signal from is reduced and the non-detection time becomes longer. Then, the number of persons is determined based on the length of the non-detection time.

FIG. 36 is a flow chart for detecting the non-detection time, and it is assumed that the non-detection time detection interrupt is made every 20 ms, for example. In FIG. 36, step 6
01 indicates that 1 is substituted for the variable X and the non-detection time of the infrared sensor L3 is calculated. In step 602, it is determined whether the left and right infrared sensors L3 and R3 have detected a human body. If no human body is detected, step 60
At 3, the non-detection time (NINZUU [x]) is counted. At this time, in NINZUU [1], the infrared sensor L
3, NINZUU [2] counts the non-detection time of the infrared sensor R3. If the human body is detected, the process proceeds to step 604. X = 2 in step 604
If not, it is considered that the non-detection time of the infrared sensor R3 is not detected, and 1 is added to X in step 605. If X = 2, left and right infrared sensors L3, R3
Considers that the non-detection time has been detected, and stores the data of the non-detection time in the memory 21a in step 606.

Next, FIG. 37 is a flow chart for judging the number of people based on the non-detection time calculated in FIG. 36, and it is assumed that an interrupt is issued every 60 seconds. In step 607, the data stored in the memory 21a in step 606 is loaded. Then, in step 608, 1 is assigned to the variable X to declare the start of analysis of the output signal of the infrared sensor L3. Then, in step 609, it is determined whether or not the calculated non-detection time is equal to or more than a certain number of people boundary value (mthd1). If the calculated non-detection time is less than or equal to the number-of-people boundary value (mthd1), H in step 611.
ANDAN [X] = 4 (many people) and the number of people boundary value (mt
If it is more than hd1) (STEP 10) is performed. In step 610, the calculated non-detection time is the people boundary value (m
thd2) or more is determined. If the calculated non-detection time is less than or equal to the number of people boundary value (mthd2), HANDAN [X] = 2 (small number of people) is set in step 612, and if the number of people is more than the number boundary value (mthd2), step 6
In 13, it is assumed that HANDAN [X] = 1 (there are no people). Next, in step 614, if X = 2 is not satisfied, it is considered that the number of people of only the infrared sensor L3 is detected, and step 6
In step 615, 1 is added to the value of X, and the number of people is detected by the infrared sensor R3. Also,
If X = 2, it is considered that the number of left and right infrared sensors L3, R3 has been detected, and the process proceeds to step 616. Step 6
In order to make the air conditioning control judgment by the number of people who combined the left and right infrared sensors L3 and R3 in 16, HANDAN
[1] (Number of infrared sensors L3) and HANDAN
The result of [2] (the number of infrared sensors R3) is added. Finally, in step 617, the data for judging the number of persons who have combined the left and right infrared sensors L3 and R3 is stored in the memory 21b.
Accumulated in.

Next, specific air conditioning operation control of the air conditioner using the present invention will be described with reference to FIGS. 39 and 40. FIG. 39 is a flowchart showing the air conditioning operation control of the air conditioner. In FIG. 39, in step 618, the right and left infrared sensors L3, R3 are combined and the number of people determination data is loaded from the memory 21b. As for the number of people, for example, as shown in the number-of-people determination table in which the left and right infrared sensors L3 and R3 are combined in FIG. If so, there is a small number of people on either side, if it is 5, if there is a large number of people on one of the left and right sides, if 6 there is a large number of people on either the left or right side, if it is 8, there is a large number of people on either side. To judge. Then, in step 619, it is determined whether Z = 2 (there is no person). If the number of people is Z = 2, the air conditioning operation is stopped at step 620, and if the number of people Z = 2, the automatic operation stop is started to start the air conditioning operation at step 621.
Performs automatic operation start control. When the operation is started in step 621, it is determined in step 622 whether Z = odd number (there is a person on either the left or right side). If the number Z of people is an odd number, the process proceeds to step 623. If the number Z of people is not an odd number, the process proceeds to step 626. In step 623, it is determined whether or not Z = 3 (only one of the left and right sides has a small number of people). If Z = 3, the process proceeds to step 624, and if Z = 3, step 625 is performed. Step 62
At 4, spot 1 air conditioning is performed. In this case, the louver 2e is set in the direction where there is a person on the left or right, and in the case of a small number of people, the fan speed is reduced to reduce the air volume in order to reduce the noise in the room due to the fan 2h. In step 625, spot 2 air conditioning is performed. In this case, the louver 2e is set in the direction where there is a person on the left or right, and in the case of a large number of people, it is judged that the noise in the room due to the fan 2h is not a concern, and the fan speed is increased to increase the air volume. In step 626, wide air conditioning is performed. This is the louver 2e to the right (NANDAN
[1] / Z) * Stop for 60 seconds, then to the left (NA
NDAN [2] / Z) * It is stopped for 60 seconds, and it is determined that the number of people in the room is large and the noise from the fan 2h is not noticeable, and the air volume is increased to increase the fan speed.

[0073]

According to the controller of the air conditioner of the present invention, two infrared sensors having a constant infrared detection area are arranged so that the detection areas partially overlap each other so as to detect the position of the human body. Position detection means for detecting the distance from the output direction of the human body based on the output of the sensor and output intensity, set temperature changing means for changing the set temperature, wind direction and wind speed changing means for changing the blowing direction and blowing speed, and the position detection Since the set temperature changing means and the main control means for controlling the wind direction and the wind speed changing means from the output of the means are provided, the spot operation is automatically performed in accordance with the movement of the person without any troublesome setting operation. Is performed, and there is an effect that a comfortable and convenient air conditioner control system can be obtained.

A control device for an air conditioner according to a second aspect of the invention includes a plurality of infrared sensors for detecting infrared rays radiated by a human body,
A human body detection sensor including a Fresnel lens that collects infrared rays on the infrared sensor, an amplification circuit that amplifies the output signal of the infrared sensor, a signal analysis unit that analyzes the output signal of the human body detection sensor, and this signal analysis The behavior predicting means for detecting the presence position of a person from the analysis result of and also predicting the behavior of the person, the wind direction controlling means for controlling the wind direction from the result of the behavior predicting means, the air volume controlling means for controlling the air volume, and the setting. Since the room temperature control means for controlling the temperature is provided, the infrared sensor is arranged in parallel without using the driving unit, the apparatus can be inexpensive, and the position of the human body can be easily detected, and the air conditioner can be easily detected. The effect of eliminating the discomfort from when the power is turned on to the steady state is released, and the effect of being released from the troublesome timer setting operation is provided.

The human body detection sensor according to claim 3 is provided with a plurality of infrared detecting elements, and in the human body detecting sensor for detecting the presence of a human body by detecting infrared rays emitted from the human body, the detection ranges of the plurality of detecting elements are partially included. In addition to the above, the number of detection areas is larger than the number of detection elements, so that it is possible to have three detection areas.
That is, it is possible to have more detection areas than the number of infrared detection elements. Also, because the number of elements is small,
The number of parts can be reduced, the price can be reduced, and the size and weight can be reduced. Effects such as improvement in reliability are obtained.

The human body detection sensor according to claim 4 is an infrared sensor for detecting infrared rays, a Fresnel lens for condensing the infrared rays on the infrared sensor, an amplification circuit for amplifying a signal from the infrared sensor, and the human body detection sensor for an air conditioner. Since it is equipped with a fixture to be attached to, a guide groove that slides and stabilizes the Fresnel lens, and a stop that stops the minute movement of the Fresnel lens, the rotation mechanism and rotation space of the human body detection sensor are unnecessary. Also, the design is improved.

The air conditioner according to claim 5 includes a plurality of infrared sensors installed on the same plane for detecting infrared rays.
A Fresnel lens for condensing infrared rays on the infrared sensor, a human body detection sensor consisting of an amplifier circuit for amplifying the output signal of the infrared sensor, and a person number determination means for determining the number of persons from the output signal of the human body detection sensor. Since the structure is provided, there is an effect that the structure of the human body detection sensor can be simple and inexpensive.

The air conditioner according to claim 6 includes a plurality of infrared sensors installed on the same plane for detecting infrared rays.
A Fresnel lens for focusing infrared rays on the infrared sensor, a human body detection sensor consisting of an amplifier circuit for amplifying the output signal of the infrared sensor, and a person number determination means for determining the number of persons from the output signal of the human body detection sensor, Depending on the number of people determined by this number-of-people determination means, wind direction control means for controlling the wind direction so as to direct the wind direction to a large number of people for a long time, and the air volume for a large number of people to increase the air volume and decrease the air volume for a small number of people. Since the air flow control means for controlling is provided, the air-conditioning comfort is improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a control device for an air conditioner according to a first embodiment of the present invention.

FIG. 2 is a control flowchart of the first embodiment of the present invention.

FIG. 3 is a front view showing the position detecting means according to the first embodiment of the present invention.

FIG. 4 is a side sectional view showing the position detecting means according to the first embodiment of the present invention.

FIG. 5 is a horizontal sectional view showing the position detecting means according to the first embodiment of the present invention.

FIG. 6 is an explanatory view showing the position detecting means according to the first embodiment of the present invention mounted therein.

FIG. 7 is a characteristic diagram of the position detecting means according to the first embodiment of the present invention.

FIG. 8 is a front view showing a control device for an air-conditioning apparatus according to Embodiment 2 of the present invention.

FIG. 9 is a front view showing a human body detection sensor according to a second embodiment of the present invention.

FIG. 10 is a side sectional view showing a human body detection sensor according to a second embodiment of the present invention.

FIG. 11 is a horizontal sectional view showing a human body detection sensor according to a second embodiment of the present invention.

FIG. 12 is an explanatory plan view showing a detection area of the human body detection sensor according to the second embodiment of the present invention.

FIG. 13 is a front view showing the detection area of the human body detection sensor according to the second embodiment of the present invention.

FIG. 14 is a side view illustrating a detection area of the human body detection sensor according to the second embodiment of the present invention.

FIG. 15 is a control block diagram according to a second embodiment of the present invention.

FIG. 16 is a flowchart of a human body detection sensor according to a second embodiment of the present invention.

FIG. 17 is an output waveform diagram showing the human body detection sensor according to the second embodiment of the present invention.

FIG. 18 is an explanatory diagram of the position discrimination of the human body detection sensor according to the second embodiment of the present invention.

FIG. 19 is a control flowchart according to the third embodiment of the present invention.

FIG. 20 is an explanatory diagram summarizing the number of times of detection by the human body detection sensor according to the third embodiment of the present invention.

FIG. 21 is an explanatory diagram showing a human body detection sensor according to a fourth embodiment of the present invention.

FIG. 22 is a structural diagram showing a human body detection sensor according to Embodiment 4 of the present invention.

FIG. 23 is a characteristic diagram of a human body detection sensor according to a fourth embodiment of the present invention.

FIG. 24 is an explanatory diagram of human placement estimation obtained by using the human body detection sensor according to the fourth embodiment of the present invention.

FIG. 25 is an operation flowchart of Embodiment 4 of the present invention.

FIG. 26 is a structural diagram showing a human body detection sensor according to Embodiment 5 of the present invention.

FIG. 27 is a structural diagram showing a human body detection sensor according to Embodiment 6 of the present invention.

FIG. 28 is a front view showing a human body detection sensor according to Embodiment 7 of the present invention.

FIG. 29 is a side view showing a human body detection sensor according to Embodiment 7 of the present invention.

FIG. 30 is a horizontal sectional view showing a human body detection sensor according to Embodiment 7 of the present invention.

FIG. 31 is an explanatory diagram showing a human body detection area of a human body detection sensor according to a seventh embodiment of the present invention.

FIG. 32 is an explanatory diagram showing a human body detection area in which a human body detection sensor according to a seventh embodiment of the present invention is installed indoors.

FIG. 33 is a front view of an air conditioner equipped with a human body detection sensor according to Embodiment 10 of the present invention.

34A and 34B are a front view, a vertical sectional view, and a horizontal sectional view showing the configuration of a human body detection sensor according to Embodiment 10 of the present invention.

FIG. 35 is a block diagram of a control configuration of a human body detection sensor according to a tenth embodiment of the present invention.

FIG. 36 is a flowchart of non-detection time detection showing the flow of signal processing of the human body detection sensor according to the tenth embodiment of the present invention.

FIG. 37 is a flowchart of the number-of-people determination showing the flow of signal processing of the human body detection sensor according to the tenth embodiment of the present invention.

FIG. 38 is a diagram showing a human presence / absence state for 1 minute of the human body detection sensor according to the tenth embodiment of the present invention and the elapsed time thereof.

FIG. 39 is a flowchart showing a specific operation control of the air conditioner using the human body detection sensor according to the tenth embodiment of the present invention.

FIG. 40 is a diagram showing a result of determining the number of people who combined the left and right infrared sensors 1a and 1b of the air conditioner according to Embodiment 10 of the present invention.

FIG. 41 is a block diagram showing a control device for a conventional air conditioner.

42 is a control flowchart of FIG. 41. FIG.

FIG. 43 is a sectional view showing a human body detection sensor of a second conventional example.

FIG. 44 is a front view of an air conditioner including a human body detection sensor of a third conventional example.

FIG. 45 is a front view showing a human body detection sensor of a third conventional example.

FIG. 46 is a horizontal sectional view showing a human body detection sensor of a third conventional example.

FIG. 47 is an explanatory diagram showing a state in which an air conditioner equipped with a human body detection sensor according to a third conventional example is installed.

FIG. 48 is a side sectional view showing a human body detection sensor of a fourth conventional example.

[Explanation of symbols]

 2b Main control means 2c Set temperature changing means 2g Wind speed changing means 3 Human body detection sensor L3 Human body detection sensor L R3 Human body detection sensor R 10 Fresnel lens 10a Lens stop concave portion 10b Lens stop convex portion 12 Position detecting means 13 Amplifying circuit 14a Guide groove 15 Fixture 20a Signal analysis means 20b Estimation means 24 Wind direction control means 26 Room temperature control means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Numakura 2-14-40 Ofuna, Kamakura City Mitsubishi Electric Corporation Living Systems Research Institute (72) Inventor Masahiko Fukuda 2-14-40 Ofuna, Kamakura Mitsubishi Electric Corporation Company Life Systems Research Institute (72) Inventor Koji Iio 3-18-1, Oga, Shizuoka City Mitsubishi Electric Co., Ltd. (72) Inventor Hidenori Shigekuroki 3-18-1, Oka, Shizuoka Mitsubishi Electric Corporation Shizuoka Inside the factory

Claims (6)

[Claims] 1. In order to detect the position of the human body, two infrared sensors having a certain infrared detection area are arranged so that the detection areas partially overlap, and from the output of the infrared sensor, the presence direction of the human body and the output intensity are detected. Position detecting means for detecting the distance, set temperature changing means for changing the set temperature, wind direction and wind speed changing means for changing the blowing direction and the blowing speed,
An air conditioner control device, comprising: a set temperature changing means and a main control means for controlling a wind direction and a wind speed changing means based on an output of the position detecting means. 2. A human body detection sensor including a plurality of infrared sensors for detecting infrared rays radiated by a human body, a Fresnel lens for condensing infrared rays on the infrared sensor, and an amplification circuit for amplifying an output signal of the infrared sensor. Signal analysis means for analyzing the output signal of the human body detection sensor, action prediction means for detecting the presence position of a person from the analysis result of this signal analysis and predicting the behavior of the person, and the result of this behavior prediction means An air conditioner control device comprising: wind direction control means for controlling a wind direction; air volume control means for controlling an air volume; and room temperature control means for controlling a set temperature. 3. A human body detection sensor comprising a plurality of infrared detection elements for detecting the presence of a human body by detecting infrared rays emitted from a human body, and the detection ranges of the plurality of detection elements are partially overlapped with each other. A human body detection sensor characterized by having a larger number of detection areas than the number of elements. 4. An infrared sensor for detecting infrared rays, a Fresnel lens for condensing infrared rays on the infrared sensor, an amplifier circuit for amplifying a signal from the infrared sensor, a fixture for attaching the human body detection sensor to an air conditioner, and a Fresnel. A human body detection sensor comprising a guide groove for sliding and stabilizing the lens, and a stop portion for stopping minute movement of the Fresnel lens. 5. A human body detection including a plurality of infrared sensors installed on the same plane for detecting infrared rays, a Fresnel lens for focusing the infrared rays on the infrared sensors, and an amplifier circuit for amplifying an output signal of the infrared sensors. An air conditioner comprising a sensor and a number-of-people determination means for determining the number of people from the output signal of the human body detection sensor. 6. A human body detection comprising a plurality of infrared sensors installed on the same plane for detecting infrared rays, a Fresnel lens for focusing the infrared rays on the infrared sensors, and an amplifier circuit for amplifying an output signal of the infrared sensors. A sensor, a number-of-people determination unit that determines the number of people from the output signal of the human body detection sensor, and a wind direction that controls the wind direction so as to direct the wind direction to a large number of people for a long time based on the number of people determined by the number-of-people determination unit. An air conditioner comprising: a control means and an air volume control means for controlling the air volume so that the air volume is increased for a large number of people and the air volume is decreased for a small number of people.