JP2008257646A - Drunk driving prevention device - Google Patents

Abstract

The present invention provides a drunk driving prevention device capable of appropriately detecting unauthorized modification.
A drunk driving prevention apparatus (1) comprising drunk state detecting means (10, 12) for detecting a drunk state of a driver and restricting driving of a vehicle based on a detection result of the drunk state detecting means. And a storage means (22) and an information management means (20) for specifying the travel distance of the vehicle in a predetermined period based on the inputted information on the vehicle motion and for storing the specified travel distance in the storage means. It is characterized by that.
[Selection] Figure 1

Description

  The present invention relates to a drunk driving prevention apparatus that restricts driving of a vehicle based on a detection result of a drinking level detecting means.

  In recent years, from the viewpoint of safe driving, for example, an inspection device for detecting alcohol contained in the breath, saliva, blood, etc. of the driver has been installed near the driver's seat, and the driver is intoxicated by alcohol testing using the device. Research is being conducted on a device that permits the vehicle to run only when it is confirmed that the vehicle is not in a tingling or drinking state.

As an example, an invention about a drunk driving prevention device that can be attached to a vehicle after manufacture is disclosed (for example, see Patent Document 1). This document exemplifies disposing a device between the start switch of the vehicle and the ignition circuit and allowing the ignition circuit to be energized for starting the vehicle only when the alcohol test result is normal. .
JP 2005-96663 A

  Like the device described in the above-mentioned conventional document, the drunk driving prevention device is configured so that it can be attached to a vehicle after manufacture, compared with the case of newly purchasing a vehicle equipped with the drunk driving prevention device, Certainly the cost burden will be greatly reduced.

  On the other hand, even if a drunk driving prevention device is inserted in the communication line that transmits the vehicle start permission signal, it will not be subjected to alcohol inspection due to unauthorized modification such as returning the wiring or attaching a bypass line. This makes it possible to drive the vehicle. If such unauthorized modification is allowed, the purpose of the drunk driving prevention device that attempts to prevent drunk driving by forcing the driver to undergo an alcohol test is impaired.

  The present invention has been made to solve such problems, and a main object thereof is to provide a drunk driving prevention apparatus capable of appropriately finding unauthorized modification.

  One aspect of the present invention for achieving the above object is a drunk driving prevention device that includes a drunk state detecting means for detecting a drunk state of a driver, and that restricts driving of the vehicle based on a detection result of the drunk state detecting means. A storage unit; and an information management unit for specifying the travel amount of the vehicle in a predetermined period based on the input information relating to the vehicle movement and storing the specified travel amount in the storage unit. It is a drunk driving prevention device.

  Here, the travel amount of the vehicle is, for example, a travel distance of the vehicle, a travel time, a travel date and time, and the number of movements. The information related to vehicle motion includes at least one of vehicle speed, vehicle displacement, acceleration, and travel distance. That is, when the travel amount of the vehicle is the travel distance, the information management means specifies “the vehicle travel distance in a predetermined period by integrating the input vehicle speed and stores the identified travel distance in the storage means” "Means" or "Means for specifying the travel distance of the vehicle in a predetermined period by adding the input displacement of the vehicle and storing the specified travel distance in the storage means". Further, “a means for specifying the travel distance of the vehicle in a predetermined period by double integration of the input acceleration and storing the specified travel distance in the storage means” may be used. A means for specifying the travel distance of the vehicle in a predetermined period by adding the distance and storing the specified travel distance in the storage means may be used.

  According to this aspect of the present invention, by comparing the travel amount stored in the storage means with the travel amount grasped on the vehicle side, it is possible to estimate with sufficient probability whether or not unauthorized modification has been performed. Can do. This is because there is a high possibility that a divergence will occur between the two if an unauthorized modification such as restoring the wiring or providing a bypass after the drunk driving prevention device is installed. As a result, unauthorized modification can be detected appropriately. In addition, it is possible to exert deterrence against unauthorized modification by monitoring a third party, outputting an alarm, and reporting to the outside of the vehicle (the police, etc.) by wireless.

  In one aspect of the present invention, for example, the vehicle is provided with a traveling state detection unit that detects a traveling state of the vehicle, and the information management unit detects that the vehicle is traveling by the traveling state detection unit in a state where the traveling restriction is performed. In such a case, the information may be stored in the storage unit.

  In one embodiment of the present invention, the predetermined period may not include a period during which travel is restricted.

  In one embodiment of the present invention, an information output unit that outputs information stored in the storage unit may be provided.

  In one aspect of the present invention, an alarm output unit is provided, and the information management unit outputs an alarm based on a comparison between the travel distance stored in the storage unit and the travel distance input from the vehicle. It may be a means for controlling the alarm output means.

  ADVANTAGE OF THE INVENTION According to this invention, the drunk driving prevention apparatus which can discover illegal modification | remodeling appropriately can be provided.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the accompanying drawings.

<First embodiment>
The drunk driving prevention apparatus 1 according to the first embodiment of the present invention will be described below. The drunk driving prevention device 1 is configured as a device that can be attached to a vehicle after manufacture.

[1. Constitution]
FIG. 1 is a diagram illustrating an example of the overall configuration of the drunk driving prevention device 1. The drunk driving prevention apparatus 1 includes, as main components, an exhalation air inlet 10, an inspection sensor 12, an HMI (Human Machine Interface) 14, and an information management ECU (Electronic Control Unit) 20. The drunk driving prevention device 1 may have an internal power supply, or may receive power supply from the vehicle side. In addition, the drunk driving prevention device 1 is originally arranged so as to interrupt a communication line 30 </ b> A that connects the ignition switch 30 and the engine control computer 50. Note that arrows in the figure indicate the flow of information communication performed using an appropriate communication protocol such as CAN (Controller Area Network), BEAN, AVC-LAN, or FlexRay.

  The exhalation-breathing port 10 is disposed near the driver's seat. More specifically, in a domestic vehicle where the driver's seat is on the right side of the vehicle, for example, on the right side of the steering column on the instrument panel, it is difficult to receive an inspection unless the driver's seat is seated. It is desirable to be disposed. Thereby, it is possible to increase the certainty that the driver has been inspected. The driver's exhaled air that has been blown into the exhalation blowing port 10 is supplied to the test sensor 12 through a dedicated channel.

  The test sensor 12 includes, for example, a pressure sensor and a humidity sensor for confirming that human breath has been actually blown, and an alcohol gas sensor for detecting the alcohol concentration in the breath. The output value of the inspection sensor 12 is transmitted to the information management ECU 20 via an analog / digital converter or the like.

  The HMI 14 includes, for example, a display device, a speaker, a buzzer, and the like. It may further include input means such as a GUI (soft switch), a dedicated switch, and a voice input device. About a display apparatus, it arrange | positions in arbitrary positions, such as the surface of the housing part of the drunk driving prevention apparatus 1, for example. The output content of the HMI 14 is determined by the information management ECU 20.

  The information management ECU 20 is, for example, a computer unit in which a ROM, a RAM, and the like are connected to each other via a bus with a CPU at the center. In addition, a semiconductor memory, an HDD (Hard Disc Drive), a DVD (Digital Versatile Disk), etc. A memory 22, an I / O port, a timer, a counter, and the like are provided. The ROM stores programs and data executed by the CPU. The information management ECU 20 is connected with an ignition switch 30, a vehicle speed sensor 40, and an engine control computer 50. Specific control contents of the information management ECU 20 will be described later.

  The ignition switch 30 outputs an ignition on signal as a vehicle start request signal and an ACC on signal as a vehicle system start signal to the information management ECU 20 in accordance with the driver's vehicle start operation.

  The vehicle speed sensor 40 includes, for example, a wheel speed sensor and a skid control computer attached to each wheel, and the skid control computer converts a wheel speed pulse signal output from the wheel speed sensor into a vehicle speed rectangular wave pulse signal (vehicle speed signal). Output to the information management ECU 20.

  The engine control computer 50 is, for example, a computer unit having a hardware configuration similar to that of the information management ECU 20, and centrally controls a throttle motor, an igniter, a starter motor, a transmission, and the like. The engine control computer 50 starts the engine by driving the starter motor in accordance with the ignition on signal output from the ignition switch 30 before the drunk driving prevention device 1 is attached. Then, the engine is started by driving the starter motor in accordance with the ignition on signal output from the information management ECU 20.

[2. Basic control details]
For example, when the ACC ON signal is input from the ignition switch 30, the information management ECU 20 uses the HMI 14 to prompt the driver to inhale the breath into the exhalation inlet 10 and receive an alcohol test. When the alcohol concentration in the breath detected by the test sensor 12 is less than a predetermined value, when an ignition-on signal is input from the ignition switch 30, it is passed through and output to the engine control computer 50 (Hereinafter referred to as a travel permission state). On the other hand, if the alcohol concentration in the breath detected by the test sensor 12 is equal to or higher than a predetermined value (the driver is in a drunk state), the engine control computer 50 even if an ignition on signal is input from the ignition switch 30. Is not output (hereinafter referred to as a travel prohibited state). At the same time, an alarm may be output using the HMI 14 to notify the driver that the vehicle is not allowed to travel. It should be noted that the initial state before the driver undergoes the alcohol test is a travel prohibited state.

  The alcohol test is urged not only when the vehicle system is activated, but also when a driver change is detected by some means (such as a seating sensor, a seat belt buckle switch, or a vehicle interior camera). It's okay.

  With such a control, the driver cannot start the engine and is prohibited from traveling unless he / she himself undergoes an alcohol test and proves that he is not in a drunk state. As a result, drunk driving can be prevented appropriately.

[3. problem]
By the way, when the drunk driving prevention device 1 is configured as a device that can be attached to a manufactured vehicle, after mounting it, the ignition switch 30 and the engine control computer 50 are directly connected again as shown in FIG. By providing a bypass as shown in FIG. 2B, illegal modification that invalidates the travel restriction (prohibition) function of the drunk driving prevention device is easily performed. If such unauthorized tampering is permitted, the driver can ignore the driving permission / prohibition state of the drunk driving prevention device, the output content, etc., and start the vehicle, forcing the driver to undergo an alcohol test. As a result, the purpose of the drunk driving prevention device for preventing drunk driving is impaired.

[4. Solution]
Therefore, in this embodiment, the information management ECU 20 integrates the vehicle speed signal input from the vehicle speed sensor 40 to identify the travel distance of the vehicle in a predetermined period and stores it in the memory 22.

  Here, the predetermined period may be arbitrarily set according to the timing at which it is checked whether or not unauthorized modification as described above has been performed. For example, the predetermined period may be an interval at which vehicle inspection is performed. It is done. In the following description, it is assumed that the predetermined period is the interval between vehicle inspections. However, the present invention is not limited to this, and may be, for example, a travel distance from when the drunk driving prevention device 1 is mounted.

  Further, when the vehicle speed signal input from the vehicle speed sensor 40 is not 0 (that is, the vehicle is traveling) even though the information management ECU 20 is in the travel prohibition state, the information management ECU 20 does so. Is stored in the memory 22.

  As a result, a third party who monitors the vehicle at the time of vehicle inspection or the like has (1) a travel distance (referred to information held by the meter device) from the previous vehicle inspection grasped on the vehicle side, and the memory 22. (2) Information indicating that the vehicle is traveling is stored in the memory 22 in spite of being in the travel prohibition state. If this is the case, it can be assumed that unauthorized modification has been performed.

  In other words, the vehicle has traveled while the drunk driving has been performed and the drunk driving prevention device 1 is powered off (the wiring may be cut or the power may be turned off by a switch operation, etc.). In this case, since the travel distance is not specified by the information management ECU 20 during that time, the situation corresponds to the above (1). In addition, when the vehicle travels in a state where the drunk driving is performed and the drunk driving prevention device 1 is turned on, the above condition (2) is satisfied. Therefore, if both of these are monitored, it can be estimated with sufficient probability whether or not unauthorized modification has been performed. As a result, a third party or the like can take measures such as reporting to the police, which can be a deterrent against unauthorized modification.

  If the vehicle is traveling even though it is in a travel-prohibited state, it is possible to output an alarm using the HMI 14 without waiting for a later third party's check, or through communication (the police Etc.) may be made. In this way, unauthorized modification can be detected and suppressed more quickly. In such a scene, since there is a high possibility that drunk driving is performed, drunk driving can be prevented more quickly.

  The travel distance stored in the memory 22 and information indicating that the vehicle has traveled despite being in a travel-prohibited state may be displayed on the display device of the HMI 14 or obtained by connecting a terminal or the like. It may be configured to be possible. Further, when information indicating that the vehicle has traveled despite being in a travel-prohibited state is stored, a warning sound may be output from the speaker or buzzer of the HMI 14.

  In addition, in order to save the trouble of a third party confirming whether or not the traveling distances are the same, the traveling distance grasped on the vehicle side can be input to the information management ECU 20 and stored in the memory 22 in the information management ECU 20. When the distance does not match, an indication to that effect, an output of a warning sound, or a report to the outside of the vehicle (the police, etc.) may be made. In this way, unauthorized modification can be detected and suppressed more quickly.

  According to the drunk driving prevention apparatus 1 of the present embodiment described above, unauthorized modification can be found appropriately.

  Note that the travel amount (travel distance) and information indicating that the vehicle is traveling despite its own state being the travel prohibition state are not necessarily stored in the internal memory (memory 22 or the like) of the drunk driving prevention device 1. It does not need to be performed, and may be stored in another memory (for example, a memory included in the navigation device) in the vehicle. In addition, a wireless communication facility may be provided, information such as travel amount may be transmitted to the facility outside the vehicle by wireless communication, and information such as the travel amount may be stored in the facility outside the vehicle. The same applies to the second embodiment described later.

<Second embodiment>
Hereinafter, the drunk driving prevention apparatus 2 according to the second embodiment of the present invention will be described. The drunk driving prevention device 1 is configured as a device that can be attached to a vehicle after manufacture.

[1. Constitution]
Since the drunk driving prevention apparatus 2 of the present embodiment is common to the drunk driving prevention apparatus 1 of the first embodiment in the hardware configuration, reference is made to FIG. Is omitted.

  [2. Basic control contents], [3. [Problem] is the same as in the first embodiment.

[4. Solution]
Also in the present embodiment, the information management ECU 20 integrates the vehicle speed signal input from the vehicle speed sensor 40 to identify the travel distance of the vehicle in a predetermined period, and stores this in the memory 22. However, specifying the travel distance of the vehicle is limited while the travel is permitted.

  By doing this, regardless of the power-on state of the drunk driving prevention device 1, in the case of unauthorized modification, the mileage from the previous vehicle inspection (refer to the information held by the meter device) grasped on the vehicle side ), The travel distances stored in the memory 22 do not match. Therefore, it can be estimated with sufficient probability whether or not unauthorized remodeling has been performed.

  In addition, when the significance of the predetermined period or the travel distance grasped on the vehicle side and the travel distance stored in the memory 22 do not coincide with each other, a display to that effect, a warning sound output, communication to the outside of the vehicle (the police, etc.) The points that may be reported are the same as in the first embodiment.

  According to the drunk driving prevention apparatus 2 of the present embodiment described above, unauthorized modification can be found appropriately.

<Modification>
The best mode for carrying out the present invention has been described above with reference to the embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the scope of the present invention. And substitutions can be added.

[Variations regarding vehicle travel restrictions]
Although an example in which the ignition signal from the ignition switch 30 is not allowed to pass as an example of “restricting vehicle travel” in the claims is not limited thereto.

  For example, as shown in FIG. 3, the drunk driving prevention device is arranged so as to interrupt a communication line 60A connecting the start switch 60 and the engine control computer 50, and a start signal (not only the engine but also the start signal of the drive motor). In other words, the vehicle travel restriction may be performed by not allowing the vehicle to pass.

  Further, as shown in FIG. 4, the drunk driving prevention device is arranged so as to interrupt a communication line 64A connecting the shift position sensor 64 attached to the shift lever 62 and the engine control computer 50, and the information management ECU 20 controls the engine control. The computer 50 may be configured to “limit vehicle travel” by continuously outputting the non-travel shift position (P: parking, N: neutral) to the computer 50.

  Further, as shown in FIG. 5, the drunk driving prevention device electrically connects a power source device 66 such as a secondary battery and a vehicle starting device 68 such as a starter motor, a driving motor, and an engine control computer 50. It may be arranged so as to interrupt the line 66 </ b> A, and “the vehicle travel is restricted” by cutting off the power supply to the engine starter 68.

  Further, instead of prohibiting the traveling of the vehicle, the vehicle speed may be limited, or a warning sound may be output or a notification to the outside of the vehicle by communication may be performed to “restrict the traveling of the vehicle”.

[Variation related to specifying travel distance]
Of the specific examples of “specifying the vehicle travel amount in a predetermined period based on information relating to vehicle motion” in the claims, a specific example in the case where the vehicle travel amount is a travel distance is input from the vehicle speed sensor 40. However, the present invention is not limited to this.

  For example, instead of integrating the vehicle speed signal input from the vehicle speed sensor 40, the travel distance of the vehicle in a predetermined period may be specified by adding the input displacement of the vehicle. In this case, the vehicle displacement is based on the hardware configuration as shown in FIG. 6, for example, and the current position of the vehicle (determined every predetermined time by the information management ECU 20 based on the radio wave signal received by the GPS receiver 70 ( Latitude, longitude).

  Further, instead of integrating the vehicle speed signal input from the vehicle speed sensor 40, the travel distance of the vehicle in a predetermined period may be specified by double integration of the input vehicle acceleration. In this case, the acceleration of the vehicle is based on the hardware configuration as shown in FIG. 7, for example, and the acceleration of the vehicle input from the G sensor 72 is used.

  Further, instead of integrating the vehicle speed signal input from the vehicle speed sensor 40, the vehicle travel distance in a predetermined period may be specified by adding the travel distance of the vehicle input at a predetermined timing. Good. An example of the hardware configuration in this case is shown in FIG. In other words, from the meter device 74 that continuously performs the process of specifying the travel distance by integrating the vehicle speed signal input from the vehicle speed sensor 40, from the time when the previous travel distance of the vehicle is input at every predetermined timing. The travel distance of the vehicle is input. Note that the timing at which the travel distance of the vehicle is input may be arbitrarily determined, such as a timing at every predetermined time, a timing at which the vehicle system is activated, or an engine is started.

[Variation of storing other travel amount instead of travel distance]
Further, among specific examples of “specifying the travel amount of a vehicle in a predetermined period based on information relating to vehicle movement”, various specific examples in which the travel amount of the vehicle is other than the travel distance are also conceivable. For example, (A) travel time, (B) travel date and time, and (C) number of movements may be specified as the travel amount.

  As for (A), for example, the travel time specified by the internal timer of the information management ECU 20 within a predetermined period (may be a travel time limited while in the travel permission state) is stored in the memory 22. . Then, by comparing with the traveling time within a predetermined period known on the vehicle side, a third party discovers unauthorized modification, outputs a warning sound, or reports outside the vehicle by radio.

  With regard to (B), for example, the date and time of travel specified by the internal timer of the information management ECU 20 within a predetermined period (may also be a travel date and time limited while in the travel-permitted state) is stored in the memory 22. To do. Then, by comparing with the traveling date and time within a predetermined period known on the vehicle side, a third party discovers unauthorized modification, outputs a warning sound, or reports outside the vehicle by radio.

  For (C), for example, the number of times that the information management ECU 20 has output an ignition-on signal to the engine control computer 50 within a predetermined period is counted by an internal counter of the information management ECU 20 and stored in the memory 22. Then, by comparing with the number of engine start times within a predetermined period ascertained by the engine control computer 50, a third party discovers unauthorized modification, outputs a warning sound, or notifies the outside of the vehicle by radio.

  Also in these modified examples, as in the first and second embodiments, it is possible to appropriately detect unauthorized modification.

  The present invention can be used in the automobile manufacturing industry, the automobile parts manufacturing industry, and the like.

It is a figure which shows an example of the whole structure of the drunk driving prevention apparatus 1 or 2. FIG. It is a figure which shows a mode that the illegal modification which invalidates the driving | running | working restriction | limiting (prohibition) function of a drunk driving prevention apparatus was performed. It is a figure which shows the other example of the whole structure of the drunk driving prevention apparatus 1 or 2. FIG. It is a figure which shows the other example of the whole structure of the drunk driving prevention apparatus 1 or 2. FIG. It is a figure which shows the other example of the whole structure of the drunk driving prevention apparatus 1 or 2. FIG. It is a figure which shows the other example of the whole structure of the drunk driving prevention apparatus 1 or 2. FIG. It is a figure which shows the other example of the whole structure of the drunk driving prevention apparatus 1 or 2. FIG. It is a figure which shows the other example of the whole structure of the drunk driving prevention apparatus 1 or 2. FIG.

Explanation of symbols

1, 2 Drunk driving prevention device 10 Exhalation breathing port 12 Sensor for inspection 14 HMI
20 Information management ECU
30 ignition switch 30A, 60A, 64A communication line 40 vehicle speed sensor 50 engine control computer 60 start switch 62 shift lever 64 shift position sensor 66 power supply device 66A power line 68 vehicle starting device 70 GPS receiver 72 G sensor 74 meter device

Claims (7)

A drunk driving prevention device comprising a drunk state detecting means for detecting a drunk state of a driver and restricting driving of a vehicle based on a detection result of the drunk state detecting means,
Storage means;
Information management means for specifying the travel amount of the vehicle in a predetermined period based on the input information relating to vehicle movement, and storing the specified travel amount in the storage means;
A drunk driving prevention device, comprising: The drunk driving prevention device according to claim 1,
The travel amount of the vehicle is a travel distance of the vehicle.
Drunk driving prevention device. The drunk driving prevention device according to claim 1 or 2,
The input information on vehicle motion includes at least one of vehicle speed, vehicle displacement, acceleration, and travel distance.
Drunk driving prevention device. The drunk driving prevention device according to any one of claims 1 to 3,
A running state detecting means for detecting the running state of the vehicle;
The information management means is means for storing, in the storage means, information to that effect when the traveling state detecting means detects that the vehicle is traveling in a state where the traveling restriction is being performed.
Drunk driving prevention device. The drunk driving prevention device according to any one of claims 1 to 4,
The predetermined period does not include a period during which the travel restriction is performed,
Drunk driving prevention device. A drunk driving prevention apparatus according to any one of claims 1 to 5,
It comprises an information output means for outputting the information stored in the storage means,
Drunk driving prevention device. The drunk driving prevention device according to any one of claims 1 to 6,
With alarm output means,
The information management means is means for controlling the alarm output means so as to output an alarm based on a comparison between the travel distance stored in the storage means and the travel distance input from the vehicle.
Drunk driving prevention device.

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