JP2009023545A - Drunk driving prevention system and vehicle interior monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drunk driving prevention system capable of preventing a person other than a driver in a vehicle from being tested as a dummy and passing an alcohol test. <P>SOLUTION: This drunk driving prevention system is provided with an alcohol detection device 4 for testing whether the breath of an occupant seated on a driver's seat in the vehicle is alcoholic or not, a semiconductor laser 12 for generating incident light L1, and a light receiving element 15 for detecting the reflected light L2 obtained after reflecting the incident light L1 on an object, and also provided with a sensor controller 5 and a movement detection sensor 10 forming an occupant partition space surrounding an occupant seated position by the incident light L1 generated by the semiconductor laser 12 and a driving possibility/impossibility determining device 2 for determining whether the occupant is in the occupant partition space or is out of the occupant partition space based on the result of detection by the movement detection sensor 10. The driving possibility/impossibility determining device 2 permits occupant's driving when an occupant's drunken state is not detected by the alcohol detection device 4 and occupant's coming-in or coming-out-of the occupant partition space is not detected and regulates the start of the vehicle when the occupant's drunken state is not detected and occupant's coming-in or coming-out-of the occupant partition space is detected. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a drunk driving prevention system and a vehicle interior monitoring system.

For the purpose of preventing drunk driving, Patent Document 1 describes an apparatus in which an alcohol detection sensor is provided on a steering handle. In this apparatus, when the alcohol concentration exceeding the reference value is detected from the expiration of the driver by the alcohol detection sensor, the start of the engine is prohibited.
JP 63-53120 A

  However, in the above apparatus, there is a possibility that another person conducts an alcohol test instead of a drunken driver. When such a fraudulent act is performed, it is difficult for the above device to discriminate the fraudulent act, and the engine is allowed to start. Therefore, after the driver's alcohol test is performed, it is necessary to determine whether there is a substitute.

  This invention is made | formed in view of the said problem, The objective is to provide the drunk driving prevention system which can prevent impersonation of the alcohol test | inspection by others other than a driver | operator.

  Another object of the present invention is to provide a vehicle interior monitoring system that generates a space to be monitored in a vehicle and detects an abnormality in the space.

  In order to solve the above problems, the invention according to claim 1 is directed to an alcohol detection means for performing an alcohol test on an occupant seated in a driver's seat, an incident wave generation means for generating an incident wave, A sensor unit for detecting a reflected wave reflected by the object, and forming a passenger compartment space surrounding the seating position of the passenger by the incident wave generated from the incident wave generating unit; and the sensor unit Based on the detection result, the movement determination means for determining whether or not the passenger compartment space has entered and exited, and the alcohol detection means does not detect the occupant's drinking state and detects the exit and entry into the passenger compartment space. When the vehicle is not allowed, the vehicle is allowed to be driven, the drinking state of the occupant is not detected, and the exit or entry of the occupant compartment space is detected. And gist that a driving determination means for performing control.

  According to the above configuration, when performing an alcohol test on the driver, an occupant compartment space surrounding the seating position of the occupant is generated by the sensor unit, and an intrusion from the outside or an exit of the occupant to the occupant compartment section is detected. For this reason, even if a person other than the occupant seated in the driver's seat performs the alcohol test on behalf of the occupant from the side or the rear of the driver's seat, the driving can be prohibited. In addition, it is possible to prevent the driver from permitting driving even when the passenger seated in the driver's seat leaves the driver's seat.

  The invention described in claim 2 is the drunk driving prevention system according to claim 1, further comprising seating detection means for determining whether the occupant is seated in a driver's seat of a vehicle, wherein the sensor unit includes the sensor unit The gist is to generate the occupant compartment space when it is determined by the seating detection means that an occupant is seated in the driver's seat.

According to the above configuration, when the occupant is seated in the driver's seat, the occupant compartment space is generated. Therefore, the occupant compartment space can be generated in a state of surrounding the seated occupant.
The gist of the invention described in claim 3 is the drunk driving prevention system according to claim 1 or 2, wherein the sensor unit outputs an incident wave to each side and rear of the driver's seat.

According to the above configuration, since the incident wave is output so as to surround each side and the rear of the driver's seat, the substitution can be detected without omission.
According to a fourth aspect of the present invention, in the drunk driving prevention system according to any one of the first to third aspects, after the sensor unit is permitted to drive by the driving propriety determining means and the vehicle starts, When the vehicle stops, the occupant compartment space is generated, and the driving availability determination means determines whether or not the passenger compartment space has exited or entered, and when detecting exit or intrusion into the passenger compartment space The gist is to request an alcohol test.

  According to the above configuration, when the vehicle stops after it has started, the passenger compartment space is generated, and the exit or intrusion to the passenger compartment space is detected. In addition, when an exit or intrusion is detected, an alcohol test is requested again. For this reason, the impersonation act after the start can also be prevented.

  The invention according to claim 5 includes an incident wave generating means for generating an incident wave and a reflected wave detecting means for detecting a reflected wave reflected by the object on the object, and the incident wave generated from the incident wave generating means. A sensor unit that forms an occupant compartment space that surrounds the seating position of the occupant, and a movement determination unit that determines whether or not there is intrusion and exit from the occupant compartment space based on the detection result of the sensor unit. Is the gist.

  According to the above configuration, an occupant compartment space surrounding the seating position of the occupant is generated by the sensor unit, and an intrusion from the outside or an exit of the occupant to the occupant compartment section is detected. For this reason, when an intrusion from the outside to the occupant compartment space or an occupant exit is detected, an alarm or notification can be performed.

  ADVANTAGE OF THE INVENTION According to this invention, the drunk driving prevention system which can prevent impersonation of the alcohol test | inspection by others other than a driver | operator can be provided. In addition, it is possible to provide a vehicle interior monitoring system that generates a space to be monitored in the vehicle and detects an abnormality in the space.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic diagram of a drunk driving prevention system 1 as an in-vehicle monitoring system. In the present embodiment, the drunk driving prevention system 1 includes a movement determination unit, a driving availability determination device 2 as a driving availability determination unit, a seating sensor 3 as a seating detection unit, an alcohol detection device 4 as an alcohol detection unit, and a sensor unit. A sensor control device 5 and a movement detection sensor 10, a brake ECU 6 and a shift lock device 7 are provided.

  The driving availability determination device 2 includes a CPU, a RAM, and a ROM (not shown), and a drunk driving prevention program is stored in the ROM. The driving propriety determination device 2 manages various controls based on the drunk driving program.

The driving propriety determination device 2 inputs various signals from the ignition switch 20 and the vehicle speed sensor 21. The ignition switch 20 changes the functional position of the electric system of the vehicle by turning an ignition key inserted into a key cylinder near the driver's seat. The functional positions include “OFF”, “ACC (accessory)”, “(ignition) ON”, and “START”, and the ignition switch 20 outputs the position selected at each time point to the driving availability determination device 2. . When the ignition enable signal is input based on the ignition switch 20, the driving propriety determination device 2 determines whether or not an occupant is seated in the driver's seat using the signal as a start trigger. The driving availability determination device 2 receives a vehicle speed pulse from the vehicle speed sensor 21 and determines whether or not the vehicle is stopped.

  The seating sensor 3 is, for example, a sensor that detects a load caused by seating of an occupant, and includes, for example, a piezoelectric element, a control circuit that inputs an electric signal from the piezoelectric element, and the like. When the occupant is seated in the driver's seat, the seating sensor 3 outputs a detection signal to the driving availability determination device 2.

  The alcohol detection device 4 is provided at a position where only an occupant seated in the driver's seat can perform an inspection under normal circumstances, and is attached to a portion such as a steering handle or an instrument panel, for example. The alcohol detection device 4 includes a microcomputer, an alcohol sensor (not shown), and the like, and is activated based on an ON signal from the inspection start switch 8 when an inspection start switch 8 provided in the vicinity thereof is operated. When the occupant blows on the breath intake port of the alcohol detection device 4, the alcohol sensor of the alcohol detection device 4 detects the alcohol concentration in the air sucked from the breath suction port, and sends an electric signal corresponding to the alcohol concentration to the microcomputer. Output. The microcomputer analyzes the signal input from the alcohol sensor and digitizes the alcohol concentration in the expiration. When the alcohol concentration is calculated, data indicating the numerical value is output to the driving availability determination device 2.

  The sensor control device 5 controls the driving of each movement detection sensor 10 based on the driving availability determination device 2. Each movement detection sensor 10 is a sensor that emits laser light and detects reflected light reflected by an object. As shown in FIG. 1, the movement detection sensor 10 includes a laser driving circuit 11, a semiconductor laser 12 as an incident wave generating means, a light projecting lens 13, a light receiving lens 14, a light receiving element 15 as a reflected wave detecting means, and an amplifier circuit. 16. The laser drive circuit 11 applies a voltage to the semiconductor laser 12 when an inspection start request is input by the operation availability determination device 2. In the present embodiment, the semiconductor laser 12 generates laser light having a wavelength longer than the visible region. Laser light generated from the semiconductor laser 12 is shaped and polarized by the light projection lens 13.

  Further, the incident light L1 (incident wave) emitted from the movement detection sensor 10 is reflected at a predetermined position of the vehicle body, and a part of the reflected and diffused light is reflected as the reflected light L2 (reflected wave). 10 light receiving lenses 14 enter. The light receiving element 15 includes a CCD (Charge Coupled Device), a light position detecting element (PSD), etc., receives the reflected light, performs photoelectric conversion, and detects the detection position and light intensity of the reflected light. Is output to the amplifier circuit 16. The amplifier circuit 16 amplifies the electrical signal of the light receiving element 15 and outputs the amplified signal to the sensor control device 5.

A plurality of the movement detection sensors 10 are provided inside the roof of the vehicle, and are arranged so as to surround the driver's seat S1, as shown in FIG. Specifically, there are three rows of a plurality of movement detection sensors 10. The first row A1 is provided on the left side of the driver's seat S1 on the roof of the vehicle, at a position between the driver's seat S1 and the passenger seat S2. The second row A2 is provided in the vehicle width direction behind the driver seat S1. The third row A3 is provided on the right side of the driver seat S1 and at a position between the driver seat S1 and a door (not shown). The movement detection sensors 10 constituting each row are provided at predetermined intervals (when a human hand or head is inserted into the driver's seat side, or when a passenger tries to leave the driver's seat S1, a predetermined part of the human body can be detected ( Every few hundred millimeters). The first column A1 is continuous with the second column A2, and the second column A2 is continuous with the third column A3. That is, each movement detection sensor 10 is arranged at a predetermined interval so as to surround from the left side of the driver's seat S1 to the right side through the rear.

  Further, the movement detection sensor 10 is fixed to the roof so as to output the laser beam downward in the vertical direction. As shown in FIG. 2, when each movement detection sensor 10 outputs incident light L1 downward, the driver's seat S1 is partitioned by the incident light L1 output from each movement detection sensor 10, and is partitioned from the passenger compartment. An occupant compartment space S is formed. The passenger D seated in the driver's seat S1 is accommodated in the passenger compartment space S.

  For example, as shown in FIG. 3, when there is no object between each movement detection sensor 10 and the vehicle body 100 facing each other, the incident light L <b> 1 output from the movement detection sensor 10 hits a predetermined portion of the vehicle body 100 and is reflected. Since the movement detection sensor 10 continues to emit the incident light L1 in a certain direction, the incident position where the incident light L1 strikes is a fixed position with respect to each movement detection sensor 10. When the incident light L 1 is reflected by the vehicle body 100, the reflected light L 2 in a predetermined direction enters the movement detection sensor 10 among the diffused reflected light. When there is no object between the movement detection sensor 10 and the vehicle body 100, the sensor control device 5 continues to detect the reflected light L2 in a state where the light detection position and the light intensity are constant. For this reason, when the detection state of the sensor control device 5 does not change, the driving availability determination device 2 determines that the sensor control device 5 does not leave or enter the passenger compartment space S.

  As shown in FIG. 4, for example, when the hand 101 of the occupant D seated in the driver's seat S <b> 1 is pushed out of the occupant compartment space S, the incident light L <b> 1 is reflected on the hand 101 before reaching the vehicle body 100. To do. Even if the movement detection sensor 10 receives the reflected light L2 reflected from the hand 101, the light detection position, intensity, and the like are different from those when the reflected light L2 reflected at a fixed position is detected. No. 5 determines that at least a part of the body of the occupant D has gone out of the occupant compartment space S or that a part of the body such as the head or arm of another person has been inserted from the outside of the occupant compartment space S. Even when the reflected light L <b> 2 reflected by the hand 101 is not received, it is determined that there has been an exit or entry into the passenger compartment space S.

  Using this movement detection sensor 10, the driving availability determination device 2 determines whether or not the passenger compartment space S has exited or has entered the passenger compartment space S after the alcohol test by the alcohol detection device 4.

  When the exit and the intrusion are not detected, the shift lock device 7 is driven to cancel the preset start restriction. In the present embodiment, when the ignition enable signal is input, the driving propriety determination device 2 drives a shift lock device 7 (see FIG. 1) to switch a shift lever (not shown) that switches the gear ratio of the automatic transmission. It is fixed at a position such as “parking” so that it cannot be switched to another position unless an alcohol test is performed. For this reason, when canceling the start restriction, the shift lock device 7 is driven to release the lock of the shift lever so that it can be operated.

On the other hand, when exit or entry into the passenger compartment space S is detected, the driving availability determination device 2 initializes the detection result of the alcohol detection device 4 regardless of whether or not the alcohol concentration exceeds a reference value. Further, an error notification for prompting re-examination is output from the speaker 9. Furthermore, the shift lever is kept locked at a position such as “parking”. Alternatively, a valve provided in the brake hydraulic system of the vehicle is controlled via the brake ECU 6 to apply a braking force to each wheel. As a result, even if the engine (not shown) is started, the vehicle cannot start.
(Processing procedure)
Hereinafter, the processing procedure of this embodiment will be described with reference to FIG. When the ignition enable signal is input from the ignition switch 20, the driving propriety determination device 2 drives the shift lock device 7 so that the shift lever is fixed at the “parking” position so that the vehicle cannot start.

  Further, the driving propriety determination device 2 determines whether or not the occupant D is seated in the driver's seat S1 based on the seating sensor 3 (step S1). When the detection signal is input from the seating sensor 3, the driving availability determination device 2 determines that the occupant D is seated in the driver's seat S1 (YES in step S1), and drives the sensor control device 5 and the movement detection sensor 10. The passenger compartment space S is formed (step S2). At this time, the driving availability determination device 2 outputs an output request for the incident light L1 to the sensor control device 5. Upon receiving this request, the sensor control device 5 drives each movement detection sensor 10 to output the incident light L1. Exit.

  As a result, as shown in FIG. 2, an occupant compartment space S is formed by the incident light L1 output from each movement detection sensor 10, and the occupant D seated in the driver's seat S1 is accommodated in the occupant compartment space S. The

  When the passenger compartment space S is formed, the driving availability determination device 2 waits for the start of an alcohol test (step S3). When the inspection start switch 8 is pushed by the occupant D seated in the driver's seat S1, the driving availability determination device 2 determines that the inspection starts when the ON signal is input from the inspection start switch 8 (YES in step S3). ), Go to step S4. If no ON signal is input from the inspection start switch 8 (NO in step S3), the process returns to step S1.

  Subsequently, the driving propriety determination device 2 determines whether or not the detection value indicating the alcohol concentration in the expiration of the occupant D is equal to or less than a reference value based on the alcohol detection device 4 (step S4). If it is determined that the alcohol concentration received from alcohol detection device 4 has exceeded the reference value (NO in step S4), the start of the vehicle is restricted (step S5). That is, the engine can be started but is shifted to a mode in which it cannot start. The driving propriety determination device 2 drives the shift lock device 7 to keep the shift lever fixed at the “parking” position. Alternatively, the driving propriety determination device 2 controls the brake ECU 6 to control a valve of the hydraulic circuit to apply a braking force to each wheel.

  On the other hand, if it is determined in step S4 that the detected value of the alcohol concentration is equal to or less than the reference value (YES in step S3), it is determined whether or not there is no exit or entry into the passenger compartment space S (step S6).

  If it is determined that the movement detection sensor 10 detects the reflected light L2 in a certain state, the driving propriety determination device 2 determines that there is no exit or intrusion into the passenger compartment space S (YES in step S6), and starts. The restriction is released (step S7). That is, the shift lock device 7 is driven to unlock the shift lever. Further, the driving propriety determination device 2 waits for the vehicle to start (step S8). If it is determined that the vehicle has started based on an accelerator sensor for detecting the opening degree of the accelerator pedal, a vehicle speed sensor, or the like (YES in step S8), the driving propriety determination device 2 initializes the detection result of the alcohol test (step S8). S9), the process proceeds to the post-start process shown in FIG.

On the other hand, when the occupant D seated in the driver's seat S1 tries to leave the occupant compartment space S in step S7, the light emitted from the movement detection sensor 10 is reflected by the occupant D before being reflected by the vehicle body 100. Blocked by the body. As a result, the movement detection sensor 10 detects a light detection position, intensity, or the like different from the normal state, or enters a state where the reflected light L2 itself cannot be detected. In addition, while the occupant D is seated in the occupant compartment space S, another person other than the occupant D enters the occupant compartment space S from the side window closest to the driver's seat S1, and the seated occupant D is seated. If an attempt is made to perform an alcohol test instead, the detection state of the reflected light L2 changes as described above. In such a case, the driving propriety determination device 2 detects a change in the detection state based on the transmission data from the sensor control device 5, and determines that there is exit and entry into the passenger compartment space S (NO in step S7). ).

  When the exit and entry into the passenger compartment space S is detected, the driving availability determination device 2 initializes the detection result of the alcohol test (step S10), and outputs an error notification that prompts a retest from the speaker 9 (step S11). Further, the start of the vehicle is restricted by fixing the shift lever or applying a braking force (step S12), and the process returns to step S1 to repeat the above processing for re-inspection.

  As shown in FIG. 6, after starting, the driving propriety determination device 2 determines whether or not the vehicle has stopped based on the vehicle speed sensor 21 (step S <b> 13). If the vehicle stops (YES in step S13), the person seated in the driver's seat S1 at that time may be replaced. Therefore, each movement detection sensor 10 is driven again, and the occupant D seated in the driver's seat S1 is moved. An occupant compartment space S to be accommodated is formed (step S14), and it is determined whether exit or entry into the occupant compartment space S has been detected (step S15).

  When the exit and the intrusion are not detected (NO in step S15), the driving availability determination device 2 determines whether or not an ignition off signal is input from the ignition switch 20 (step S19), and the ignition is turned off. (YES in step S19), the detection result is initialized (step S20), and the process ends. If the ignition is not turned off (NO in step S19), the process returns to step S13.

  On the other hand, when the exit or entry to the passenger compartment space S is detected in step S15 (YES in step S15), an alcohol test is requested (step S16). At this time, the driving availability determination device 2 activates the alcohol detection device 4. Further, a sound prompting reexamination may be output from the speaker 9, or notification may be given by a display unit provided on an instrument panel or the like.

  The driving propriety determination device 2 acquires a detection value of the alcohol concentration from the alcohol detection device 4, and determines whether or not the detection value exceeds a reference value (step S17). If the detected value is less than or equal to the reference value (NO in step S17), the process proceeds to step S19. If the detected value exceeds the reference value (YES in step S17), the start of the vehicle is restricted as described above (step S18), and it is determined whether or not an ignition off signal is input (step S19).

According to the first embodiment, the following effects can be obtained.
(1) In the first embodiment, the drunk driving prevention system 1 includes an alcohol detection device 4 that performs an alcohol test on the occupant D, a semiconductor laser 12 that generates incident light L1, and a light receiving element 15 that detects reflected light L2. And a movement detection sensor 10 and a sensor control device 5 that form an occupant compartment space S surrounding the driver's seat S1 by incident light L1 from the semiconductor laser 12. In addition, a driving availability determination device 2 that determines the presence or absence of entry and exit from the passenger compartment space S based on the detection result of the movement detection sensor 10 is provided. This driving propriety determination device 2 permits the driving of the vehicle when the alcohol detection device does not detect the occupant's drinking state and does not detect exit and entry into the occupant compartment space S, and exits the occupant compartment space S. Alternatively, when the intrusion is detected, the vehicle start restriction is performed. For this reason, even if a person other than the occupant seated in the driver's seat S1 performs an alcohol test on behalf of the occupant from the side or rear of the driver's seat S1, the start can be prevented. In addition, it is possible to prevent the occupant seated in the driver's seat S1 from starting even when the passenger leaves the driver's seat S1.

  (2) In the first embodiment, the driving availability determination device 2 generates the passenger compartment space S when it is determined that the passenger is seated in the driver seat S1 based on the seating sensor 3. For this reason, it is possible to generate the occupant compartment space S while surrounding the occupant at the timing when the occupant is seated in the driver's seat S1.

  (3) In 1st Embodiment, the movement detection sensor 10 outputs incident light L1 to each side and back of driver's seat S1. In other words, since the incident light L1 is output so as to surround the driver's seat S1, the substitution can be detected without omission. Further, since the incident light L1 is not irradiated in front of the driver's seat S1 where occupants' limbs and the like exist, erroneous detection can be prevented.

  (4) In the first embodiment, the movement detection sensor 10 generates the occupant compartment space S when the vehicle stops after the driving is permitted by the driving permission determination device 2 and the vehicle starts, and the driving permission determination device. When 2 detects exit or intrusion into the passenger compartment space S formed at this time, it requests an alcohol test. For this reason, the impersonation act after the start can also be prevented.

(Second Embodiment)
Next, a second embodiment embodying the present invention will be described with reference to FIGS. In addition, since 2nd Embodiment is a structure which changed only the structure of the movement detection sensor 10 of 1st Embodiment, the detailed description is abbreviate | omitted about the same part.

  FIG. 7 is a block diagram showing the configuration of the movement detection sensor 30. The movement detection sensor 30 includes a scan actuator 31 including a galvanometer mirror in addition to the configuration of the movement detection sensor 10. The scan actuator 31 is an actuator that changes the direction of light emitted from the semiconductor laser 12 and shaped and polarized by the light projecting lens 13 within a predetermined angle range with the movement detection sensor 10 as the center.

  As shown in FIG. 8, each movement detection sensor 30 is provided inside the roof of the vehicle as in the first embodiment, and the direction of the incident light L1 is changed within a predetermined angle range θ around the movement detection sensor 30. Thus, the passenger compartment space S can be formed in the same manner as in the first embodiment. For example, the sensor control device 5 stores in advance a detection pattern such as the light detection position and intensity of the reflected light L2 of each movement detection sensor 30, and compares this detection pattern with the detection pattern at each time point to obtain a detection state. Determine if there is a change. When a change occurs in the detection state, the driving availability determination device 2 determines that an exit or intrusion has occurred in the passenger compartment space S.

Therefore, according to the second embodiment, the following effects can be obtained in addition to the effects described in the first embodiment.
(5) In the second embodiment, the movement detection sensor 30 includes the scan actuator 31. For this reason, since the detection target range of the movement detection sensor 30 can be expanded, the number of sensors can be reduced. In addition, since the leak-free detection can be performed by constantly changing the direction of the incident light L1, the detection rate of an object between the movement detection sensor 30 and the vehicle body 100 can be improved.

In addition, you may change this embodiment as follows.
In each of the above embodiments, the in-vehicle monitoring system that forms the passenger compartment space S and monitors the passenger compartment space S is embodied as the drunk driving prevention system 1, but may be another system. For example, when the passenger gets off and the door of the vehicle is locked, the movement detection sensors 10 and 30 may be driven to form the passenger compartment space S. Then, the vehicle door is forcibly opened to enter the vehicle, and when a suspicious person enters the passenger compartment section, an alarm or notification to the outside is performed. In this case, as shown in FIG. 9, the passenger compartment space S may be formed so as to surround the rear seat S3 or the passenger seat S2, not the vicinity of the driver seat S1. If it does in this way, a crime prevention function can be improved.

  Alternatively, as shown in FIG. 10, when there is a passenger 102 to be protected such as an infant in the rear seat, the passenger compartment space S may be formed so as to surround the seating position of the passenger 102. For example, when the occupant 102 moves his face or hand out of the window or falls from the seat, a warning sound or the like is output based on a change in the detection result of the movement detection sensors 10 and 30, and attention is paid to the occupant. In addition to prompting other passengers, the passengers are notified that they are about to leave the passenger compartment space. If it does in this way, a crew member can be protected.

In each of the above-described embodiments, it is detected whether there is an exit or entry into the passenger compartment space S even after the vehicle has started, but the detection process after starting may be omitted.
In the above-described embodiment, the seating sensor 3 is a sensor that detects pressure fluctuation, but may be an infrared sensor, a sensor that captures the vicinity of the driver's seat with a camera, and detects the presence / absence of the driver's seat by image processing. .

  In the above-described embodiment, the above-described processing is started when the driving availability determination device 2 detects the ignition on, but the processing may be started when the engine is started. Alternatively, the door lock device may start the process when the door is unlocked.

  As long as the movement detection sensors 10 and 30 are sensors that output incident waves that do not adversely affect the human body, the movement detection sensors 10 and 30 may not be sensors that output laser light. For example, a millimeter wave radar, an ultrasonic radar, or the like may be used.

The schematic diagram of the drunk driving prevention system of a 1st embodiment. Schematic which shows the position of a movement detection sensor. The conceptual diagram which shows the detection state of the movement detection sensor at the time of normal. The conceptual diagram which shows the detection state of a movement detection sensor when there exists entering / exiting with respect to crew member space. The flow which shows the process sequence of 1st Embodiment. A flow showing a processing procedure after starting. The block diagram which shows the structure of the movement detection sensor of 2nd Embodiment. Schematic which shows the output state of the incident light by a movement detection sensor. The top view of crew member division space of another example. The top view of crew member division space of another example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Drunk driving prevention system as an in-vehicle monitoring system, 2 ... Movement determination means, Driving availability determination device as driving availability determination means, 3 ... Seating sensor as seating detection means, 4 ... Alcohol detection device as alcohol detection means, DESCRIPTION OF SYMBOLS 5 ... Sensor control apparatus which comprises a sensor unit, 10 ... Movement detection sensor which comprises a sensor unit, 12 ... Semiconductor laser as incident wave generation means, 15 ... Light receiving element as reflected wave detection means, S ... Passenger compartment space, S1 ... Driver's seat, D, 102 ... Crew, L1 ... Incident light as incident wave, L2 ... Reflected light as reflected wave.

Claims (5)

Alcohol detection means for performing an alcohol test on an occupant seated in the driver's seat of the vehicle;
An incident wave generating means for generating an incident wave; and a reflected wave detecting means for detecting a reflected wave reflected from the object by the incident wave. The incident wave generated from the incident wave generating means surrounds the seating position of the occupant. A sensor unit forming an occupant compartment space;
Based on the detection result of the sensor unit, movement determination means for determining whether there is intrusion and exit from the passenger compartment space;
When the alcohol detection means does not detect the drinking state of the occupant and does not detect exit and entry into the occupant compartment space, the vehicle is allowed to drive, the occupant's drinking state is not detected, and the occupant A drunk driving prevention system, comprising: driving permission / inhibition determining means for restricting driving of a vehicle upon detection of exit or entry into a partitioned space. In the drunk driving prevention system according to claim 1,
Seating detection means for determining whether or not the occupant is seated in the driver's seat of the vehicle,
The drunk driving prevention system, wherein the sensor unit generates the occupant compartment space when it is determined by the seating detection means that an occupant is seated in the driver's seat. In the drunk driving prevention system according to claim 1 or 2,
The drunk driving prevention system, wherein the sensor unit outputs an incident wave to each side and rear of the driver's seat. In the drunk driving prevention system according to any one of claims 1 to 3,
The sensor unit generates the occupant compartment space when the vehicle stops after the driving is permitted by the driving permission determination unit and the vehicle starts.
The drivability prevention system characterized in that the driving availability determination means determines whether or not there is exit or entry into the passenger compartment space and requests an alcohol test when detecting exit or entry into the passenger compartment space. . An incident wave generating means for generating an incident wave; and a reflected wave detecting means for detecting a reflected wave reflected from the object by the incident wave. The incident wave generated from the incident wave generating means surrounds the seating position of the occupant. A sensor unit forming an occupant compartment space;
A vehicle interior monitoring system comprising: a movement determination unit that determines whether or not the passenger compartment space has entered and exited based on a detection result of the sensor unit.

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