JP2009113708A - Drunken driving preventive device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drunken driving preventive device capable of suppressing any straw man with a simple constitution. <P>SOLUTION: The drunken driving preventive device comprises a portable alcohol detector 12, and a control unit for controlling a vehicle based on the result of detection of the alcohol content to be input from the alcohol detector 12. A light emission unit 15 is provided on the alcohol detector 12, and a right camera 17 and a left camera 18 are provided before a driver's seat. When the breath is blown into the alcohol detector 12, the control unit determines that it is the alcohol detection by a driver D if the light emission unit 15 is present in a predetermined range of an image picked up by the right camera 17 and the left camera 18, and controls the vehicle based on the result of detection of the alcohol content input from the alcohol detector 12. The control unit determines that it is not the alcohol detection by the driver D if the light emission unit 15 is not present in the predetermined range of the image picked up by the right camera 17 and the left camera 18, and regulates the driving of the vehicle. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a drunk driving prevention apparatus for preventing drunk driving of a vehicle.

In recent years, drunk driving prevention devices for preventing drunk driving have been installed in vehicles (see, for example, Patent Document 1).
In the drunk driving prevention device described in Patent Document 1, an alcohol detector provided on a steering wheel or the like detects an alcohol concentration in the expiration of a driver seated on a driver's seat, and vehicle control is performed based on the detected alcohol concentration. The device performs control to disable the start of the vehicle. Specifically, the vehicle control device disables the start of the vehicle when the alcohol concentration detected by the alcohol detector is equal to or higher than a preset reference value. On the other hand, the vehicle control device enables the vehicle to start when the alcohol concentration detected by the alcohol detector is less than a preset reference value.
JP 2007-106277 A

  By the way, in said drunk driving prevention apparatus, there exists a possibility that the impersonation that another person performs alcohol detection on behalf of the driver who drunk may be performed. When such a fraudulent act is performed, it is difficult to determine whether or not the drunk driving prevention device is a fraudulent act, and the vehicle control device has an alcohol concentration detected by the alcohol detector less than a preset reference value. When the vehicle is, the vehicle can be started. Therefore, in order to suppress the impersonation of other people performing alcohol detection on behalf of the driver, it is confirmed whether or not the other person has entered the range of the driver's seat using a number of sensors, and the driver's face is photographed. Thus, collation with previously registered face information is performed. In such a device, the configuration tends to be complicated, and a drunk driving prevention device that can suppress substitution with a simple configuration has been demanded.

  This invention is made | formed in view of such a situation, The objective is to provide the drunk driving prevention apparatus which can suppress substitution with a simple structure.

Hereinafter, means for achieving the above-described object and its operation and effects will be described.
According to the first aspect of the present invention, there is provided a hand-held alcohol detector that detects an alcohol concentration in a breath of a driver seated in a driver's seat and outputs the detection result, and an alcohol concentration input from the alcohol detector. A drunk driving prevention device comprising a control means for controlling the vehicle based on the detection result of the vehicle, wherein the alcohol detector and the periphery of the driver's seat in the vehicle interior are provided with a light emitting portion and the other is provided with a camera. The light emitting unit and the camera are arranged so that the light emitting unit exists in a predetermined range of an image captured by the camera when the driver performs alcohol detection, and the control means When the light emitting unit is present within a predetermined range of the image captured by the camera, it is determined that the alcohol is detected by the driver, and the alcohol detector detects The vehicle is controlled based on the detection result of the alcohol concentration, and if the light emitting unit does not exist within a predetermined range of the image captured by the camera, it is determined that the alcohol is not detected by the driver, and the vehicle is driven. Its gist is to regulate it.

  According to this configuration, a hand-held alcohol detector is used, and a light emitting unit is provided in one of the alcohol detector and the periphery of the driver's seat in the vehicle interior, and a camera is provided in the other, and the driver detects alcohol. At this time, the light emitting unit and the camera are arranged so that the light emitting unit exists in a predetermined range of an image captured by the camera. As a result, when the driver detects alcohol, the light emitting unit exists in a predetermined range of the image captured by the camera. When the driver blows into the alcohol detector, the light emitting unit is present in a predetermined range of the image captured by the camera, so that the control means determines that the driver has detected alcohol and detects alcohol. The vehicle is controlled based on the detection result of the alcohol concentration input from the vessel. In addition, when another person blows into the alcohol detector on behalf of the driver, there is no light emitting part within a predetermined range of the image captured by the camera, so the control means determines that the alcohol detection is not performed by the driver. The vehicle is regulated. In this way, it is possible to suppress the substitution of performing alcohol detection on behalf of the driver with a simple configuration in which a camera is provided in one of the alcohol detector and the periphery of the driver's seat in the vehicle interior, and the light emitting unit is provided in the other. it can.

  According to a second aspect of the present invention, in the drunk driving prevention apparatus according to the first aspect, the light emitting unit is provided in the alcohol detector, and the camera photographs the light emitting unit provided in the alcohol detector from different directions. As described above, the gist is that a plurality of drivers are provided around the driver's seat in the vehicle compartment.

  According to this configuration, the light emitting unit is provided in the alcohol detector, and a plurality of cameras are provided around the driver's seat in the vehicle cabin so that the light emitting unit provided in the alcohol detector is photographed from different directions. For this reason, depending on whether or not a light emitting unit is present in any of the predetermined ranges of images taken by a plurality of cameras, alcohol detection is performed at a position that is presumed that an alcohol detector is present when the driver performs alcohol detection. It is possible to more accurately determine whether the vessel is located.

  According to a third aspect of the present invention, in the drunk driving prevention apparatus according to the first aspect, the camera is provided in the alcohol detector, and a plurality of the light emitting units are provided at different positions around the driver's seat in the vehicle compartment. The gist is that

  According to this configuration, since the camera is provided in the alcohol detector and a plurality of light emitting units are provided at different positions around the driver's seat in the vehicle interior, all the light emitting units exist in a predetermined range of the image captured by the camera. Whether or not the alcohol detector is located at a position presumed that the alcohol detector is present when the driver performs alcohol detection can be determined more accurately.

  According to a fourth aspect of the present invention, in the drunk driving prevention apparatus according to any one of the first to third aspects, the passenger is seated on the seat of the vehicle and the detection result is obtained. A seating sensor for outputting to the control means is provided, and the control means determines whether the passenger's seating state is different from that at the time of alcohol detection after alcohol detection based on a detection result input from the seating sensor. The gist is that it is not alcohol detection and the vehicle is regulated.

  According to this configuration, the control means detects the alcohol by the driver when the passenger's seating state is different from the alcohol detection time after alcohol detection based on the detection result input from the seating sensor provided in the vehicle seat. It is judged that it is not, and the driving | running | working control of a vehicle is performed. For this reason, impersonation, such as a case where a passenger | crew leaves | separates from a seat and performs alcohol detection on behalf of a driver | operator, can further be suppressed.

  According to a fifth aspect of the present invention, in the drunk driving prevention apparatus according to any one of the first to fourth aspects, the seat of the vehicle detects the attachment / detachment state and the amount of withdrawal of the seat belt, and the detection result is displayed. A seat belt sensor for outputting to the control means is provided, and the control means operates when the state of the seat belt is different from that at the time of alcohol detection after alcohol detection based on the detection result input from the seat belt sensor. The gist is that it is not alcohol detection by a person and that the vehicle is regulated.

  According to this configuration, when the state of the seat belt differs from the time of alcohol detection after alcohol detection based on the detection result input from the seat belt sensor provided in the vehicle seat, It judges that it is not a detection and regulates driving of the vehicle. For this reason, impersonation, such as a case where a passenger | crew leaves | separates from a seat and performs alcohol detection on behalf of a driver | operator, can further be suppressed.

  The invention according to claim 6 is the drunk driving prevention apparatus according to any one of claims 1 to 5, wherein the alcohol detector detects the inhalation of breath and outputs the detection result to the control means. The gist is provided with a wind sensor, and the control means starts the alcohol detector based on a detection result input from the wind sensor.

  According to this configuration, the control means activates the alcohol detector based on the detection result input from the wind sensor provided in the alcohol detector. For this reason, an alcohol detector can be started by inhalation of breath, and alcohol detection can be performed smoothly.

  ADVANTAGE OF THE INVENTION According to this invention, the drunk driving prevention apparatus which can suppress substitution with a simple structure can be provided.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the vehicle 1 includes a drunk driving prevention device 10, an electronic key control unit 20 that collates IDs registered in advance by wireless communication with a portable device 2 carried by the driver, an engine switch, 21. Further, the vehicle 1 includes a display device 22 including a display screen of a navigation system and a television screen provided in advance, an engine control device 23 that performs engine start control, and a shift control device 24 that performs operation control of the shift device. ing. The seats 30, 40, 50 provided in the vehicle 1 are provided with seating sensors 31, 41, 51 for detecting the seating of each occupant. The seat belts 32, 42, 52 provided in the respective seats 30, 40, 50 are provided with seat belt sensors 33, 43, 53 for detecting the state of the seat belts 32, 42, 52.

  The drunk driving prevention device 10 controls a hand-held alcohol detector 12 that detects the alcohol concentration in the expiration of the driver, and an in-vehicle device provided in the vehicle 1 based on the alcohol concentration detected by the alcohol detector 12. A control unit 11 as a control means, and a right camera 17 and a left camera 18 which are provided in front of the driver's seat and are CMOS (Complementary Metal Oxide Semiconductor) image sensors for photographing the alcohol detector 12 are provided.

  As shown in FIGS. 2 and 3, a blowing port 13 is provided at the upper end portion 12 a of the alcohol detector 12. A wind sensor 14 is provided in a passage through which exhaled air blown from the blowing port 13 passes. At the lower end portion 12b of the alcohol detector 12, a light emitting portion 15 made of an infrared LED (Light Emitting Diode) is provided. An alcohol sensor 16 is provided inside the alcohol detector 12.

  As shown in FIG. 1, the alcohol detector 12 detects the alcohol concentration in the exhalation and outputs the detection result to the control unit 11 when exhalation is blown. Specifically, when exhalation is blown, the wind sensor 14 detects the exhalation and outputs an activation signal Sk to the control unit 11 and the alcohol sensor 16. The alcohol sensor 16 is activated when the activation signal Sk from the wind sensor 14 is input, detects the alcohol concentration in the exhaled breath, and outputs the detection data to the control unit 11 as a detection result.

  When the activation signal Sk is input from the wind sensor 14 of the alcohol detector 12, the control unit 11 outputs a start signal Ss to start light emission to the light emitting unit 15, and shoots to the right camera 17 and the left camera 18. A start signal Ss for starting the operation is output. When the detection result is input from the alcohol sensor 16 or when a predetermined time has elapsed since the activation signal Sk from the wind sensor 14 is input, the control unit 11 stops the light emission to the light emitting unit 15. A stop signal St is output, and a stop signal St for stopping shooting is output to the right camera 17 and the left camera 18. This time is after alcohol detection.

  The control unit 11 includes a memory 11a that stores a legally prescribed value of alcohol concentration for drunk driving and a state at the time of alcohol detection. When the alcohol concentration as a detection result is input from the alcohol detector 12, the control unit 11 controls the vehicle 1 based on the alcohol concentration. Here, the control unit 11 outputs a control signal to the engine control device 23 or the shift control device 24 as control of the vehicle 1. That is, the controller 11 controls the engine when the alcohol concentration detected by the alcohol detector 12 is equal to or higher than a legally prescribed value (here, 0.15 mg / l) that is a drunk driving stored in the memory 11a. A prohibition signal for prohibiting engine start is output to the device 23, or a prohibition signal for prohibiting shift operation is output to the shift control device 24. On the other hand, when the alcohol concentration detected by the alcohol detector 12 is less than the legally stipulated value for drunk driving, the control unit 11 sends a permission signal to the engine control device 23 to enable the engine to be started. Alternatively, a permission signal indicating that a shift operation is possible is output to the shift control device 24. The control unit 11 may output the alcohol concentration as the detection result input from the alcohol sensor 16 of the alcohol detector 12 to the display device 22 so that the display device 22 displays the alcohol concentration.

  As shown in FIGS. 2 and 3, the right camera 17 and the left camera 18 are provided on the left and right sides so that the steering wheel 26 is sandwiched between the instrument panel 25 in front of the driver D. When the activation signal Sk is input from the control unit 11, the right camera 17 and the left camera 18 start imaging and output the captured image to the control unit 11. A right camera 17 is provided on the right side as viewed from the driver D, and a left camera 18 is provided on the left side. The right camera 17 and the left camera 18 have directions and shooting ranges so that when the driver D holds the alcohol detector 12 in his hand and blows in exhalation, the light emitting unit 15 of the alcohol detector 12 is positioned at the center of the photographed image. Is set. That is, when the driver D holds the alcohol detector 12 in his hand and inhales the breath, as shown in FIGS. 4A and 4B, the right camera 17 and the left camera 18 respectively photograph the right side. In the center of the captured image P1 and the left captured image P2, there is a light emitting unit 15 provided at the lower end of the alcohol detector 12. When the start signal Ss is input from the control unit 11, the light emitting unit 15 starts to emit light.

  Further, when inhaling exhalation into the alcohol detector 12, the control unit 11 can determine that the alcohol detector 12 exists even if the position where the alcohol detector 12 exists is slightly shifted, as shown in FIGS. ) Is provided with a right allowable range A1 and a left allowable range A2 as predetermined ranges. That is, when the breath is blown into the alcohol detector 12, if the light emitting portion 15 of the alcohol detector 12 is present in both the right allowable range A1 of the right captured image P1 and the left allowable range A2 of the left captured image P2. The controller 11 determines that the driver has detected alcohol.

  For example, when the passenger in the passenger's seat breathes in on behalf of the driver D, that is, when the alcohol detector 12 is directed toward the passenger seat for substitution, the upper end portion 12a of the alcohol detector 12 is The seat side faces and the lower end 12b of the alcohol detector 12 faces the window side of the driver seat 30. In such a case, as shown in FIGS. 5 (a) and 5 (b), in the right-side photographed image P1 photographed by the right camera 17, the light emitting unit 15 of the alcohol detector 12 is removed from the center, and the right-side allowed It exists outside the range A1. On the other hand, the light emitting unit 15 of the alcohol detector 12 does not exist in the left-side captured image P2 captured by the left camera 18. Thus, if the light emission part 15 of the alcohol detector 12 does not exist in either the right side allowable range A1 of the right side captured image P1 or the left side allowable range A2 of the left side captured image P2, the control unit 11 is not a driver. Judged as alcohol detection by impersonation. If the control unit 11 determines that the alcohol detection is based on impersonation, the control unit 11 controls the driving of the vehicle 1. When the operation of the vehicle 1 is restricted, alcohol detection must be performed again. Here, the operation restriction of the vehicle 1 means that the engine cannot be started by outputting a prohibition signal to the engine control device 23, or the shift operation cannot be performed by outputting a prohibition signal to the shift control device 24. By doing so, the vehicle 1 cannot travel.

  As shown in FIG. 1, the electronic key control unit 20 collates an ID registered in advance by performing wireless communication with the portable device 2 carried by the driver. When the ID verification matches, the electronic key control unit 20 outputs a signal to the engine control device 23 to permit engine start. The engine switch 21 outputs an operation signal to the engine control device 23 when the switch is operated.

  The engine control device 23 starts the engine when a signal for permitting engine start is input from the electronic key control unit 20 and an operation signal is input from the engine switch 21. Note that the engine control device 23 does not start the engine when a prohibition signal is input from the control unit 11. Further, the engine control device 23 starts the engine when a permission signal is input from the control unit 11.

  When the prohibition signal is input from the control unit 11, the shift control device 24 disables the shift operation. Further, the shift control device 24 enables a shift operation when a permission signal is input from the control unit 11.

  The seating sensors 31, 41, 51 are provided inside the respective seat surfaces of the driver seat 30, the passenger seat 40, and the rear seat 50, and output a seating signal Sc to the control unit 11 when the occupant is seated. While the occupant is seated in each of the seats 30, 40, 50, a seating signal Sc is output from the seating sensors 31, 41, 51. The control unit 11 determines that the occupant is seated when the seating signal Sc is input, and determines that the occupant has stood up or got off when the seating signal Sc is not input. When the seating state of the passenger differs from the time of alcohol detection after alcohol detection based on the presence or absence of the seating signal Sc input from the seating sensors 31, 41, 51, the control unit 11 is not alcohol detection by the driver. Judgment is made and the operation of the vehicle 1 is regulated. That is, the control unit 11 sits in each seat 30, 40, 50 when exhalation is blown into the alcohol detector 12 and sits in each seat 30, 40, 50 after alcohol detection is performed. And compare. For example, in the seats 40 and 50 other than the driver's seat 30, when the seating signal Sc is not input to the control unit 11 when alcohol is detected and the seating signal Sc is input to the control unit 11 after alcohol detection, Since it may stand up and perform alcohol detection on behalf of the driver and sit down after alcohol detection, the control unit 11 determines that it is a substitute and regulates driving of the vehicle 1.

  The seat belt sensors 33, 43, 53 detect changes in the amount of belt withdrawal in addition to whether or not the seat belts 32, 42, 52 provided in the seats 30, 40, 50 are attached (detached state). Then, the detection signal Sf including these pieces of information is output to the control unit 11. When the state of the seat belts 32, 42, 52 is different from the time of alcohol detection after alcohol detection based on the detection signal Sf input from the seat belt sensors 33, 43, 53, the control unit 11 detects alcohol. It judges that it is not, and the driving | running control of the vehicle 1 is performed. That is, the control unit 11 determines the state of the seat belts 32, 42, 52 of the seats 30, 40, 50 when exhalation is blown into the alcohol detector 12 and each seat 30 after alcohol detection is performed. , 40, 50 are compared with the state of the seat belts 32, 42, 52. When the alcohol is detected, the control unit 11 assumes that the occupant is wearing the seat belts 32, 42, 52 and that the seat belt is attached from the seat where the seating signal Sc is input. If no detection signal Sf is input, alcohol detection is invalidated. The controller 11 regulates driving of the vehicle 1 even if alcohol detection is performed in this state. Further, in the state where the seat belts 32, 42, 52 of the seats 30, 40, 50 are mounted, the seat belts 42, 52 of the seats 40, 50 other than the driver's seat 30 are pulled out, and after the alcohol is detected, the drawers are pulled out. When the amount is reduced, the passenger may lean out to the driver's seat side, perform alcohol detection on behalf of the driver, and return to the seats 40 and 50 after alcohol detection. It is determined that the vehicle is impersonating and the operation of the vehicle 1 is regulated.

  Further, the window 34 provided in the vehicle 1 outputs a window opening / closing signal Sw indicating whether the window 34 is open or closed to the control unit 11. The controller 11 compares the open / close state of the window 34 of the driver's seat 30 when alcohol detection is performed on the alcohol detector 12 with the open / close state of the window 34 of the driver's seat 30 after alcohol detection is performed. Then, it is determined whether or not impersonation is performed. For example, when the window 34 that was open at the time of alcohol detection is closed after alcohol detection, there is a possibility that a person other than the passenger entered the window 34 to detect alcohol, so the control unit 11 It is determined that the vehicle is impersonating and the operation of the vehicle 1 is regulated.

  The door 35 provided in the vehicle 1 outputs a door opening / closing signal Sd indicating whether the door 35 is open or closed to the control unit 11. The controller 11 compares the open / closed state of the door 35 of the driver's seat 30 when alcohol detection is performed on the alcohol detector 12 with the open / closed state of the door 35 of the driver's seat 30 after alcohol detection is performed. Then, it is determined whether or not impersonation is performed. For example, when the door 35 that was open at the time of alcohol detection is closed after alcohol detection, there is a possibility that a person other than the passenger has entered the door 35 to detect alcohol, so the control unit 11 It is determined that the vehicle is impersonating and the operation of the vehicle 1 is regulated.

Next, the operation | movement aspect of the drunk driving prevention apparatus 10 comprised as mentioned above is demonstrated.
When an occupant including the driver D gets into the vehicle 1 and sits on each seat 30, 40, 50, a seating signal Sc is output from the seating sensors 31, 41, 51 to the control unit 11. When each occupant wears the seat belts 32, 42, 52 provided in the respective seats 30, 40, 50, the detection signal Sf including the fact that the seat belt sensors 33, 43, 53 are in the mounted state and the amount of withdrawal. Is output to the control unit 11.

  When the driver D holds the alcohol detector 12 in his / her hand and blows in exhaled air from the air inlet 13, the wind sensor 14 of the alcohol detector 12 detects the exhaled air and outputs an activation signal Sk to the control unit 11 and the alcohol sensor 16. To do. When the activation signal Sk is input from the wind sensor 14 of the alcohol detector 12, the control unit 11 outputs a start signal Ss to start light emission to the light emitting unit 15, and shoots to the right camera 17 and the left camera 18. A start signal Ss for starting the operation is output. The control unit 11 also sits on the basis of the seating signal Sc from the seating sensors 31, 41, 51, and the seatbelt 32 based on the detection signal Sf from the seatbelt sensors 33, 43, 53. , 42, 52 and the open / closed state of the window 34 and the door 35 are stored in the memory 11a.

  When the start signal Ss is input from the control unit 11, the light emitting unit 15 starts to emit light. When the activation signal Sk is input from the control unit 11, the right camera 17 and the left camera 18 start imaging and output the captured image to the control unit 11.

  The control unit 11 determines whether or not the light emitting unit 15 exists in the right allowable range A1 of the right captured image P1 input from the right camera 17 and the left allowable range A2 of the left captured image P2 input from the left camera 18. Determine whether. As shown in FIGS. 4A and 4B, when the light emitting unit 15 is present in the right allowable range A1 and the left allowable range A2, it is determined that the alcohol is detected by the driver D. On the other hand, as shown in FIGS. 5 (a) and 5 (b), when the light emitting unit 15 is not present in the right allowable range A1 and the left allowable range A2, it is not alcohol detection by the driver D, but instead of substitution. Judge alcohol detection.

  The alcohol sensor 16 of the alcohol detector 12 detects the alcohol concentration in the exhaled breath, and outputs the detection data to the control unit 11 as a detection result. When the detection result is input from the alcohol sensor 16, the control unit 11 outputs a stop signal St indicating that the light emission is stopped to the light emitting unit 15, and also stops stopping the photographing to the right camera 17 and the left camera 18. The signal St is output. When the stop signal St is input from the control unit 11, the light emitting unit 15, the right camera 17, and the left camera 18 stop light emission and photographing.

  When it is determined that the alcohol detection is performed by the driver D, the control unit 11 determines whether the engine control device 23 or the shift control device 24 is based on the alcohol concentration detection result input from the alcohol sensor 16 of the alcohol detector 12. In response, a control signal is output.

  In other words, the control unit 11 prohibits the engine control device 23 from starting the engine when the alcohol concentration detected by the alcohol detector 12 is equal to or higher than a legally prescribed value for drunk driving stored in the memory 11a. Or a prohibition signal for prohibiting the shift operation to the shift control device 24. On the other hand, when the alcohol concentration detected by the alcohol detector 12 is less than the legally stipulated value for drunk driving, the control unit 11 sends a permission signal to the engine control device 23 to enable the engine to be started. Alternatively, a permission signal indicating that a shift operation is possible is output to the shift control device 24.

  In addition, the control unit 11 restricts driving of the vehicle 1 when it is determined not to detect alcohol by the driver D but based on captured images taken by the right camera 17 and the left camera 18, instead of detecting alcohol instead. That is, the control unit 11 outputs a prohibition signal for prohibiting engine start to the engine control device 23 or a prohibition signal for prohibiting a shift operation to the shift control device 24.

  The controller 11 seats seats based on the seating signals Sc from the seating sensors 31, 41, 51 after alcohol detection, and seats based on the detection signals Sf from the seat belt sensors 33, 43, 53. The seat at the time of alcohol detection stored in the memory 11a, the amount of drawer and the opened / closed state are compared with the amount of withdrawal of the belts 32, 42, 52 and the opened / closed state of the window 34 and the door 35. When the control unit 11 detects at least one of the seating state of the seats 30, 40, 50 at the time of alcohol detection after the alcohol detection, the amount of the seat belts 32, 42, 52 pulled out, and the open / closed state of the window 34 and door 35 In this case, it is determined that the detection is not alcohol detection by the driver but alcohol detection by substitution, and even if the permission signal is output to the engine control device 23 or the permission signal is output to the shift control device 24, the operation of the vehicle 1 is regulated.

As described above, according to the embodiment described above, the following effects can be obtained.
(1) Using the hand-held alcohol detector 12, the light emitting unit 15 is provided at the lower end 12b of the alcohol detector 12, and the right camera 17 and the left camera 18 are provided on the instrument panel 25 in front of the driver seat 30 in the vehicle compartment. Prepare. When the driver D performs alcohol detection, the light emitting unit 15 exists in the right allowable range A1 of the right captured image P1 captured by the right camera 17 and the left camera 18 and the left allowable range A2 of the left captured image P2. The light emitting unit 15, the right camera 17, and the left camera 18 are arranged. Thus, when the driver D detects alcohol, the light emitting unit 15 exists in the right allowable range A1 of the right captured image P1 captured by the right camera 17 and the left camera 18 and the left allowable range A2 of the left captured image P2. To come. When the driver D blows into the alcohol detector 12, light is emitted to the right allowable range A1 of the right captured image P1 and the left allowable range A2 of the left captured image P2 captured by the right camera 17 and the left camera 18. Since the unit 15 exists, the control unit 11 determines that the alcohol detection is performed by the driver D, and controls the vehicle 1 based on the alcohol concentration detection result input from the alcohol detector 12. When another person blows into the alcohol detector 12 in place of the driver D, for example, the alcohol detector 12 faces sideways or exists at the passenger seat position, and the right camera 17 and the left Since the light emitting unit 15 does not exist in the right side allowable range A1 of the right side captured image P1 captured by the camera 18 and the left side allowable range A2 of the left side captured image P2, the control unit 11 determines that it is not alcohol detection by the driver D, Regulation of driving of the vehicle 1 is performed. As described above, the alcohol detector 12 is provided with the light emitting unit 15 and the driver's seat 30 in the vehicle interior with the right camera 17 and the left camera 18 to suppress the substitution of the alcohol detection on behalf of the driver D. Can do.

  (2) The light emitting unit 15 is provided in the alcohol detector 12, and the right camera 17 and the left camera 18 are located in front of the driver seat 30 in the vehicle interior so that the light emitting unit 15 provided in the alcohol detector 12 is photographed from different directions. The instrument panel 25 is provided on the left and right sides so that the steering wheel 26 is sandwiched between them. For this reason, the driver D depends on whether or not the light emitting unit 15 is present in either the right allowable range A1 of the right captured image P1 captured by the right camera 17 and the left camera 18 or the left allowable range A2 of the left captured image P2. It is possible to more accurately determine whether or not the alcohol detector 12 is located at a position presumed that the alcohol detector 12 is present when performing alcohol detection.

  (3) Based on the detection results input from the seating sensors 31, 41, 51 provided in the seats 30, 40, 50 of the vehicle 1, the control unit 11 is different in the seating state of the passenger from the time of alcohol detection after alcohol detection. At that time, it is determined that the alcohol detection is not performed by the driver D, and the driving of the vehicle 1 is regulated. For this reason, impersonation, such as a case where a passenger | crew leaves | separates from the seat 30,40,50 and performs the alcohol detection instead of the driver | operator D, can be suppressed further.

  (4) The control unit 11 determines that the state of the seat belts 32, 42, 52 is detected after alcohol is detected based on the detection results input from the seat belt sensors 33, 43, 53 provided in the seats 30, 40, 50 of the vehicle 1. When it is different from the time of alcohol detection, it is determined that it is not alcohol detection by the driver D, and the driving of the vehicle 1 is regulated. For this reason, impersonation, such as a case where a passenger | crew leaves | separates from the seat 30,40,50 and performs the alcohol detection instead of the driver | operator D, can be suppressed further.

  (5) The control unit 11 determines whether alcohol detection has been performed based on the detection result input from the wind sensor 14 provided in the alcohol detector 12. For this reason, it can be determined that alcohol detection has been performed by inhaling breath, and it can be smoothly determined whether the alcohol detection has been performed by the driver D.

(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. The drunk driving prevention apparatus of this embodiment is different from the first embodiment in that the light emitting unit is provided on the vehicle side and the camera is provided in the alcohol detector. Hereinafter, a description will be given focusing on differences from the first embodiment.

  As shown in FIGS. 6 and 7, a right light-emitting unit 65 and a left light-emitting unit 66 made of infrared LEDs are provided in front of the driver's seat 30. At the lower end 12 b of the alcohol detector 12, a camera 67 composed of a CMOS image sensor that photographs the right light-emitting unit 65 and the left light-emitting unit 66 is provided.

  When the activation signal Sk is input from the wind sensor 14 of the alcohol detector 12, the control unit 11 outputs a start signal Ss to start light emission to the right light emitting unit 65 and the left light emitting unit 66 and to the camera 67. A start signal Ss for starting shooting is output. When the detection result is input from the alcohol sensor 16 of the alcohol detector 12 or when the predetermined time has elapsed since the activation signal Sk from the wind sensor 14 of the alcohol detector 12 is input, the control unit 11 A stop signal St for stopping light emission is output to the right light-emitting unit 65 and the left light-emitting unit 66, and a stop signal St for stopping shooting is output to the camera 67.

  The right side light emitting unit 65 and the left side light emitting unit 66 are provided on the left and right sides so that the steering wheel 26 is sandwiched between the instrument panel 25 in front of the driver D. The right light emitting unit 65 and the left light emitting unit 66 start to emit light when the activation signal Sk is input from the control unit 11. Note that a right light-emitting unit 65 is provided on the right side as viewed from the driver D, and a left light-emitting unit 66 is provided on the left side. The right light-emitting unit 65 and the left light-emitting unit 66 are within an allowable range as a predetermined range of a captured image captured by the camera 67 of the alcohol detector 12 when the driver D holds the alcohol detector 12 in his hand and blows in exhalation. It is set to be located. That is, when the driver D holds the alcohol detector 12 in his / her hand and blows in exhalation, as shown in FIG. 8, the right light emitting unit 65 is within the allowable range A3 of the photographed image P3 photographed by the camera 67. And the left side light emission part 66 exists. When the start signal Ss is input from the control unit 11, the camera 67 starts shooting and outputs the shot image to the control unit 11.

  The control unit 11 determines whether or not the right light emitting unit 65 and the left light emitting unit 66 exist in the allowable range A3 of the captured image P3 input from the camera 67, respectively. As shown in FIG. 8, when the right light-emitting unit 65 and the left light-emitting unit 66 are present in the allowable range A3, it is determined that the alcohol detection is performed by the driver D. On the other hand, when neither the right light-emitting unit 65 nor the left light-emitting unit 66 exists in the allowable range A3, it is determined that the detection is not alcohol detection by the driver D but alcohol detection by substitution.

As mentioned above, according to embodiment described, in addition to the effect of (3)-(5) of 1st Embodiment, there can exist the following effects.
(6) Using the hand-held alcohol detector 12, the instrument panel 25 in front of the driver's seat 30 in the vehicle room is provided with the right light-emitting unit 65 and the left light-emitting unit 66, and the alcohol detector 12 is provided with a camera 67. The right light-emitting unit 65, the left light-emitting unit 66, and the camera 67 are arranged so that the right light-emitting unit 65 and the left light-emitting unit 66 exist in the allowable range A3 of the captured image P3 captured by the camera 67 when D detects alcohol. Is done. As a result, when the driver D performs alcohol detection, the right light-emitting unit 65 and the left light-emitting unit 66 exist in the allowable range A3 of the captured image P3 captured by the camera 67. When the driver D blows into the alcohol detector 12, the right light emitting unit 65 and the left light emitting unit 66 exist in the allowable range A3 of the captured image P3 captured by the camera 67. It is determined that the alcohol detection is performed by the driver D, and the vehicle 1 is controlled based on the alcohol concentration detection result input from the alcohol detector 12. When another person blows into the alcohol detector 12 in place of the driver D, the camera 67 turns sideways or exists at the passenger seat position, and the captured image P3 captured by the camera 67 is captured. Since the right light-emitting unit 65 and the left light-emitting unit 66 do not exist in the allowable range A3, the control unit 11 determines that it is not alcohol detection by the driver D, and controls the driving of the vehicle 1. As described above, the alcohol detector 12 is replaced with the alcohol 67 instead of the driver D with a simple configuration in which the alcohol detector 12 includes the camera 67 and the instrument panel 25 in front of the driver seat 30 in the vehicle interior includes the right light emitting unit 65 and the left light emitting unit 66. Impersonation for performing detection can be suppressed.

  (7) Since the camera 67 is provided in the alcohol detector 12 and the right side light emitting unit 65 and the left side light emitting unit 66 are provided at two different positions on the instrument panel 25 in front of the driver seat 30 in the vehicle compartment, It is assumed in advance that the alcohol detector 12 is present when the driver D performs alcohol detection, depending on whether or not all the right light-emitting units 65 and the left light-emitting units 66 are present in the allowable range A3 of the captured image P3. It is possible to more accurately determine whether or not the alcohol detector 12 is located at the position.

In addition, the said embodiment can be implemented with the following forms which changed this suitably.
In the above embodiment, the alcohol concentration detection data detected by the alcohol sensor 16 of the alcohol detector 12 is output to the control unit 11. However, the alcohol sensor 16 is provided with a control unit different from the control unit 11. You may make it output the signal according to alcohol concentration to the control part 11 from a different control part. For example, when the detected alcohol concentration is less than a legally prescribed value (in this case, 0.15 mg / l) at which drunk driving occurs, a normal signal is output to the control unit 11 and the legal concentration at which the alcohol concentration becomes drunk driving. When the value is equal to or greater than the specified value, an abnormal signal is output to the control unit 11.

In the above embodiment, the light emitting unit 15, the right light emitting unit 65, and the left light emitting unit 66 are infrared LEDs, but other infrared LEDs may be used.
In the above embodiment, the right camera 17, the left camera 18, and the camera 67 are CMOS image sensors. However, the present invention is not limited to a CMOS image sensor, and other sensors may be used.

  In the first embodiment, when the wind sensor 14 of the alcohol detector 12 detects the exhaled breath, the alcohol sensor 16 is activated, and the light emitting unit 15, the right camera 17, and the left camera 18 are activated. It was made to be. However, an operation switch may be provided in the alcohol detector 12, and the light emitting unit 15, the right camera 17, and the left camera 18 may be activated together with the alcohol sensor 16 by operating the operation switch.

  In the second embodiment, when the wind sensor 14 of the alcohol detector 12 detects the exhaled breath, the alcohol sensor 16 is activated, and the right light emitting unit 65, the left light emitting unit 66, and the camera 67 are It was started. However, the alcohol detector 12 may be provided with an operation switch, and the right light emitting unit 65, the left light emitting unit 66, and the camera 67 may be activated together with the alcohol sensor 16 by operating the operation switch.

  In the first embodiment, if the light emitting unit 15 exists in the right allowable range A1 of the right captured image P1 captured by the right camera 17 and the left allowable range A2 of the left captured image P2 captured by the left camera 18, the control unit 11 was determined to be alcohol detection by the driver D. However, the entire right-side captured image P1 captured by the right camera 17 may be set to the right allowable range A1, and the entire left-side captured image P2 captured by the left camera 18 may be set to the left allowable range A2. That is, if the light emitting unit 15 is present in the right-side captured image P1 captured by the right camera 17 and the left-side captured image P2 captured by the left camera 18, the control unit 11 determines that alcohol detection by the driver D has occurred.

  -In 2nd Embodiment, if both the right light emission part 65 and the left light emission part 66 exist in the tolerance | permissible_range A3 as the predetermined range of the picked-up image P3 which the camera 67 image | photographed, the control part 11 will be alcohol by the driver | operator D. Judged to be detected. However, the entire captured image P3 captured by the camera 67 may be within the allowable range A3. That is, if both the right light-emitting unit 65 and the left light-emitting unit 66 are present in the captured image P3 captured by the camera 67, the control unit 11 determines that the alcohol detection by the driver D is detected.

  -In 1st Embodiment, the control part 11 is the light emission part 15, the right camera 17, and the left camera 18, and in 2nd Embodiment, the drunk driving prevention apparatus 10 is the right light emission part 65, the left light emission part 66, and a camera. 67, in addition to determining the substitution, the substitution is determined based on the following signals.

A seating signal Sc from the seating sensors 31, 41, 51.
A detection signal Sf from the seat belt sensors 33, 43, 53.
A window opening / closing signal Sw from the window 34.

A door opening / closing signal Sd from the door 35.
However, the drunk driving prevention device 10 may not be provided with all of these, and may be selectively used. Moreover, the drunk driving prevention apparatus 10 does not need to be provided with these. By doing in this way, while being able to simplify a structure, expense can be suppressed.

  In the first embodiment, the right camera 17 and the left camera 18 are provided on the left and right so that the steering wheel 26 is sandwiched between the instrument panel 25 in front of the driver D. However, the right camera 17 and the left camera 18 are not limited to the instrument panel 25, and the position where the light emitting unit 15 of the alcohol detector 12 is present when the driver D holds the alcohol detector 12 in his hand and blows in the breath. As long as the position is possible, it may be provided in another place around the driver's seat 30 in the vehicle compartment. For example, the right camera 17 and the left camera 18 may be provided on the ceiling above the driver seat 30.

  In the first embodiment, the right camera 17 and the left camera 18 are provided on the left and right so that the steering wheel 26 is sandwiched between the instrument panel 25 in front of the driver D. However, the number of cameras is not limited to two, but may be one. In this way, the configuration can be reduced. Further, the number of cameras may be three or more. If it does in this way, when driver D performs alcohol detection, it can judge more correctly whether alcohol detector 12 is located in the position assumed beforehand that alcohol detector 12 exists.

  In the second embodiment, the right side light emitting unit 65 and the left side light emitting unit 66 are provided on the left and right sides so that the steering wheel 26 is sandwiched between the instrument panel 25 in front of the driver D. However, the right light-emitting unit 65 and the left light-emitting unit 66 are not limited to the instrument panel 25, and the camera 67 provided in the alcohol detector 12 can be photographed when the driver D holds the alcohol detector 12 in his hand and blows in exhalation. If it is a position, it may be provided in another place around the driver's seat 30 in the vehicle compartment. For example, the right light emitting unit 65 and the left light emitting unit 66 may be provided on the ceiling above the driver seat 30.

  In the second embodiment, the right side light emitting unit 65 and the left side light emitting unit 66 are provided on the left and right sides so that the steering wheel 26 is sandwiched between the instrument panel 25 in front of the driver D. However, the number of light emitting units is not limited to two, but may be one. In this way, the configuration can be reduced. Further, the number of light emitting units may be three or more. If it does in this way, when driver D performs alcohol detection, it can judge more correctly whether alcohol detector 12 is located in the position assumed beforehand that alcohol detector 12 exists.

  -In 1st Embodiment, when the alcohol detection by which the breath detector was blown in with the alcohol detector 12 in hand is performed, the control part 11 is the right side picked-up image P1 and the left side from the right camera 17 and the left camera 18. The impersonation is determined based on the photographed image P2. However, when the alcohol detector 12 is provided with a detection switch and the detection switch is operated, the right allowable range A1 of the right captured image P1 captured by the right camera 17 and the left camera 18 and the left allowable range A2 of the left captured image P2. When the light emitting unit 15 is present, it is determined that the alcohol detection is performed by the driver, the alcohol detection is permitted, and the right allowable range A1 of the right-side captured image P1 captured by the right camera 17 and the left camera 18 is detected. And when the light emission part 15 does not exist in the left side tolerance | permissible_range A2 of the left side picked-up image P2, it judges that it is not alcohol detection by a driver | operator and you may make it not permit alcohol detection.

  In the second embodiment, the control unit 11 determines the substitution based on the captured image P3 from the camera 67 when alcohol detection is performed by holding the alcohol detector 12 in hand and breathing in. I made it. However, when the alcohol detector 12 is provided with a detection switch and the detection switch is operated, the right light-emitting unit 65 and the left light-emitting unit 66 exist in the allowable range A3 of the captured image P3 captured by the camera 67. Is determined to be alcohol detection by the driver, the alcohol detection is permitted, and the right light-emitting unit 65 and the left light-emitting unit 66 are not present in the allowable range A3 of the captured image P3 captured by the camera 67. It may be determined that it is not alcohol detection by the driver, and alcohol detection may not be permitted.

Next, technical ideas other than the claimed invention that can be grasped from the embodiment will be described together with the effects thereof.
(A) Based on the detection result of the alcohol concentration input from the hand-held alcohol detector that detects the alcohol concentration in the breath of the driver sitting in the driver's seat and outputs the detection result A drunk driving prevention apparatus comprising a control means for controlling a vehicle, wherein the alcohol detector and a driver seat in a vehicle compartment are provided with a light emitting unit and the other with a camera, and the driver detects alcohol. The light emitting unit and the camera are arranged so that the light emitting unit exists within a predetermined range of an image photographed by the camera when performing the operation, and the control means, when the alcohol detector is picked up, When the light emitting unit is present within a predetermined range of the image captured by the camera, it is determined that the alcohol is detected by the driver, the alcohol detection is permitted, and the camera has captured the image. When the light emitting unit in a predetermined range of the image does not exist, it is determined not to be the alcohol detected by the driver, drunk driving prevention device characterized in that it does not allow the alcohol detection.

  According to this configuration, a hand-held alcohol detector is used, and a light emitting unit is provided in one of the alcohol detector and the periphery of the driver's seat in the vehicle interior, and a camera is provided in the other, and the driver detects alcohol. At this time, the light emitting unit and the camera are arranged so that the light emitting unit exists within a predetermined range of an image captured by the camera. As a result, when the driver detects alcohol, the light emitting unit exists in a predetermined range of the image captured by the camera. When the driver picks up the alcohol detector, the light emitting unit is present in a predetermined range of the image captured by the camera, so the control means determines that the alcohol detection is performed by the driver and detects the alcohol. Allow. In addition, when another person picks up the alcohol detector on behalf of the driver, the control means determines that the alcohol detection is not performed by the driver because there is no light emitting part in the predetermined range of the image captured by the camera. And do not allow alcohol detection. For this reason, if it is a drunk driving prevention device which regulates driving of a vehicle based on a detection result of alcohol concentration, it cannot drive a vehicle. Thus, the substitution can be suppressed with a simple configuration in which either the alcohol detector or the driver's seat in the vehicle compartment is provided with a camera and the other is provided with a light emitting unit.

The block diagram which shows the structure of a drunk driving prevention apparatus. The top view around a driver's seat. The side view around a driver's seat. (A) The figure which shows the picked-up image of the right camera, (b) The figure which shows the picked-up image of the left camera. (A) The figure which shows the picked-up image of the right camera, (b) The figure which shows the picked-up image of the left camera. The top view around a driver's seat. The side view around a driver's seat. The figure which shows the picked-up image of a camera.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vehicle, 10 ... Drunk driving prevention apparatus, 11 ... Control part, 11a ... Memory, 12 ... Alcohol detector, 12a ... Upper end part, 12b ... Lower end part, 13 ... Air inlet, 14 ... Wind sensor, 15 ... Light emission part , 16 ... Alcohol sensor, 17 ... Right camera, 18 ... Left camera, 20 ... Electronic key control unit, 21 ... Engine switch, 22 ... Display device, 23 ... Engine control device, 24 ... Shift control device, 25 ... Instrument panel , 26 ... steering wheel, 30 ... driver's seat (seat), 34 ... window, 25 ... door, 40 ... passenger seat (seat), 50 ... rear seat (seat), 31, 41, 51 ... seating sensor, 32, 42 , 52 ... Seat belt, 33, 43, 53 ... Seat belt sensor, 65 ... Right light emitting part, 66 ... Left light emitting part, 67 ... Camera, D ... Driver, A1 ... Right tolerance A2 ... left the allowable range, A3 ... acceptable range, P1 ... the right photographic image, P2 ... left the captured image, P3 ... the captured image.

Claims (6)

A hand-held alcohol detector that detects the alcohol concentration in the breath of the driver sitting in the driver's seat and outputs the detection result, and controls the vehicle based on the alcohol concentration detection result input from the alcohol detector A drunk driving prevention device comprising control means for
A light emitting part is provided on one of the alcohol detector and the periphery of the driver's seat in the vehicle interior, and a camera is provided on the other, and the light emitting part is within a predetermined range of an image taken by the camera when the driver detects alcohol. The light emitting unit and the camera are arranged so that there is
When the breath is blown into the alcohol detector, the control means determines that the alcohol is detected by the driver when the light emitting unit is present within a predetermined range of the image captured by the camera. The vehicle is controlled based on the detection result of the alcohol concentration input from the alcohol detector, and if the light emitting unit is not present in a predetermined range of the image captured by the camera, it is determined that the driver does not detect alcohol. And a drunk driving prevention device characterized by regulating driving of the vehicle. In the drunk driving prevention device according to claim 1,
The light emitting unit is provided in the alcohol detector,
A drunk driving prevention device, wherein a plurality of cameras are provided around a driver's seat in the vehicle cabin so as to photograph light emitting units provided in the alcohol detector from different directions. In the drunk driving prevention device according to claim 1,
The camera is provided in the alcohol detector,
A plurality of the light emitting units are provided at different positions around the driver's seat in the vehicle compartment. In the drunk driving prevention device according to any one of claims 1 to 3,
The seat of the vehicle is provided with a seating sensor that detects that a passenger is seated and outputs the detection result to the control means,
When the passenger's seating state is different from that at the time of alcohol detection after alcohol detection based on the detection result input from the seating sensor, the control means determines that it is not alcohol detection by the driver and controls driving of the vehicle. A drunk driving prevention device characterized by that. In the drunk driving prevention device according to any one of claims 1 to 4,
The seat of the vehicle is provided with a seat belt sensor that detects the attached state and the withdrawal amount of the seat belt and outputs the detection result to the control means.
When the state of the seat belt is different from that at the time of alcohol detection after alcohol detection based on the detection result input from the seat belt sensor, the control means determines that it is not alcohol detection by the driver and drives the vehicle. A drunk driving prevention device characterized by regulation. In the drunk driving prevention apparatus according to any one of claims 1 to 5,
The alcohol detector includes a wind sensor that detects inhalation of breath and outputs the detection result to the control means;
The drunk driving prevention device, wherein the control means activates an alcohol detector based on a detection result input from the wind sensor.

Images