JP5541964B2 - Vehicle information reading device - Google Patents

Description

  The present invention relates to a vehicle information reading device that reads information recorded in an event data recorder that records vehicle accident time information at times before and after a vehicle accident.

  In recent years, in an accident in which an airbag or the like is activated in a vehicle, it has been considered to install an event data recorder (on-vehicle recording device) that records vehicle motion data before and after the accident, a driver's operation, and the like. Yes. As such an event data recorder, for example, in Japanese Patent Application Laid-Open No. 2007-237798 (hereinafter referred to as Patent Document 1), a first recording unit that prohibits overwriting of vehicle specific information once vehicle specific information is recorded; If the recording of information is permitted when a vehicle collision is detected or predicted, the vehicle has second recording means for recording vehicle information and is recorded in the first recording means An event that permits recording of vehicle information to the second recording means if the authentication of the unique information is permitted, and prohibits recording of vehicle information to the second recording means if the authentication of the vehicle specific information is not permitted. A data recorder technique is disclosed.

JP 2007-237798 A

  By the way, in a conventionally known event data recorder as disclosed in Patent Document 1 described above, when reading the recorded vehicle accident information, for example, key information is input from a terminal outside the vehicle, and the event is recorded. The key information predetermined on the data recorder side is compared with the input key information, and when the key information matches, the vehicle accident information can be read out. However, in the case of such a conventional information reading security structure, an operator who knows the key information can read all personal information recorded in the vehicle. It is desired to prevent personal information from being easily read by dealer workers and to make the personal information higher in security level than general vehicle information.

  The present invention has been made in view of the above circumstances. Personal information such as vehicle accident information is maintained at a higher security level than general vehicle information, and dealer information is used by dealer workers. An object of the present invention is to provide a vehicle information reading device that can prevent reading easily.

A vehicle information reading device according to one aspect of the present invention is capable of reading the key information as first key information from a vehicle accident information recording unit that records vehicle accident information in time before and after the vehicle accident together with unique key information. And first information processing means for reading out and processing normal failure information in the vehicle , and second information processing means capable of reading the key information as second key information from the vehicle accident time information recording means And when the first key information read by the first information processing means matches the second key information read by the second information processing means, the reading of the vehicle accident information is permitted. Vehicle accident information reading permission means, and when the vehicle accident information reading permission means permits the vehicle accident information reading to be performed. And a, a vehicle accident information reading means for reading information when the vehicle accident from the means.

  According to the vehicle information reading device of the present invention, personal information such as vehicle accident information is kept at a higher security level than general vehicle information, and a dealer worker can easily use personal information such as vehicle accident information. It becomes possible to prevent reading.

It is explanatory drawing of the event data recorder and failure diagnostic apparatus which were provided in the airbag control unit of the vehicle which concerns on 1st Embodiment of this invention. It is function explanatory drawing of the airbag control unit and failure diagnosis apparatus which concern on 1st Embodiment of this invention. It is a flowchart of the vehicle information reading program at the time of the vehicle accident which concerns on 1st Embodiment of this invention. It is a flowchart of the vehicle information reading program at the time of a vehicle accident which concerns on 2nd Embodiment of this invention.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. 1 to 3 relate to a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a vehicle. In the case of a collision accident or the like, the vehicle 1 controls deployment of an airbag device (not shown). An airbag control unit 2 is mounted.

  In addition to the function of controlling the airbag device described above, the airbag control unit 2 is used in an accident in which an airbag or the like is activated. Event data that records vehicle accident information such as longitudinal acceleration, driver seat belt status, brake ON / OFF, throttle opening, steering angle, shift position information, etc., in a non-volatile memory (not shown) It has a function as a recorder (vehicle-mounted recording device: vehicle accident time information recording means) 2a.

  As an event data recorder 2a function of the airbag control unit 2, when the ignition switch is turned on, the number of times the ignition switch is turned on is counted, and the number of times the ignition switch is turned on and the serial number of the airbag control unit 2 itself are counted. Alternatively, unique key information to which the vehicle body number of the attached vehicle 1 is added is recorded together with the above-described vehicle accident information.

  On the other hand, reference numeral 3 denotes a failure diagnosis device that reads out various information from various control devices of the vehicle 1 and performs failure diagnosis. The airbag control unit 2 includes a vehicle harness and an OBD (On Board Diagnosis) connector 4. Connected through.

  That is, as shown in FIG. 2, the failure diagnosis device 3 that is a vehicle information reading device is a CPU 3a that performs arithmetic processing, an input unit 3b that an operator performs various inputs, and mainly reads normal failure information for processing. A first failure diagnosis unit 3c, a second failure diagnosis unit 3d, which is mainly necessary for reading data from the event data recorder 2a of the airbag control unit 2, and an information reading unit for reading information from the connected device 3e mainly includes an output unit 3f that displays and outputs data.

  The first failure diagnosis unit 3c is a failure diagnosis program unit provided in almost all failure diagnosis devices 3. When a failure diagnosis execution instruction is input from the input unit 3b, the first failure diagnosis unit 3c The failure information is read out and output to the liquid crystal part of the failure diagnosis device 3 and other connected terminal devices through the output unit 3f. Further, when a reading execution instruction for vehicle accident information is input from the input unit 3b, the above key information is read as the first key information A from the event data recorder 2a and output to the second failure diagnosis unit 3d. It is supposed to be. It should be noted that the first key information A is not output in the failure diagnosis device 3 in which the second failure diagnosis unit 3d is not provided. Thus, the first failure diagnosis unit 3c is provided as the first information processing means.

  The second failure diagnosing unit 3d is a program unit that is provided only for a device that reads vehicle accident information from the event data recorder 2a in particular, and an instruction to read and execute vehicle accident information is input from the input unit 3b. When this is done, the above key information is read out as second key information A ′ from the event data recorder 2a. Then, the first key information A and the second key information A ′ input from the first failure diagnosis unit 3c are collated, and the first key information A and the second key information A ′ match. Only when this is done, the information reading unit 3e is allowed to read the vehicle accident information from the event data recorder 2a. As described above, the second failure diagnosis unit 3d is provided as a second information processing unit and a vehicle accident time information reading permission unit.

  The information reading unit 3e reads the vehicle accident time information from the event data recorder 2a when the signal for permitting reading of the vehicle accident time information is input from the second failure diagnosis unit 3d, and passes through the output unit 3f. The output is made to the liquid crystal part of the failure diagnosis device 3 or other connected terminal device. Thus, the information reading unit 3e is provided as a vehicle accident information reading unit.

  Next, the flow of the vehicle accident information reading process executed by the above-described failure diagnosis apparatus 3 will be described with reference to the flowchart of FIG.

  First, in step (hereinafter abbreviated as “S”) 101, the first failure diagnosis unit 3c reads the key information from the event data recorder 2a as the first key information A and outputs it to the second failure diagnosis unit 3d. To do.

  Next, in S102, the second failure diagnosis unit 3d reads key information from the event data recorder 2a as second key information A '.

  In step S103, the second failure diagnosis unit 3d checks whether the first key information A matches the second key information A '.

  If the first key information A matches the second key information A ′ as a result of the collation in S103, the process proceeds to S104, and the second failure diagnosis unit 3d permits reading of the vehicle accident information, A read permission signal is output to the information reading unit 3e, and the information reading unit 3e reads the vehicle accident information from the event data recorder 2a, and is connected to the liquid crystal part of the failure diagnosis device 3 and other connections through the output unit 3f. Output to the terminal device.

  As described above, in the failure diagnosis apparatus 3 according to the first embodiment of the present invention, the second failure diagnosis unit 3d uses the first key information A read from the event data recorder 2a by the first failure diagnosis unit 3c. The second failure diagnosis unit 3d collates with the second key information A ′ read from the event data recorder 2a, and the event data when the first key information A and the second key information A ′ match. Reading of vehicle accident information from the recorder 2a is permitted. For this reason, personal information such as vehicle accident information is maintained at a higher security level than general vehicle information, and personal information such as vehicle accident information is not handled by dealer workers who do not require such personal information. It is possible to prevent reading easily.

  Next, FIG. 4 is a flowchart of the vehicle accident information reading program according to the second embodiment of the present invention. In the second embodiment, the first failure diagnosing unit 3c is provided with the key information collation and the vehicle accident information reading permission function of the second failure diagnosing unit 3d in the first embodiment. However, unlike the first embodiment, other configurations and operations are the same as those of the first embodiment. Therefore, only the parts different from the first embodiment will be described below with reference to FIG.

  That is, in the failure diagnosis device 3 according to the second embodiment, the first failure diagnosis unit 3c is a failure diagnosis program unit provided in almost all failure diagnosis devices 3, and the failure diagnosis execution instruction is input from the input unit 3b. Is input, the normal failure information is read from the connected control device and output to the liquid crystal part of the failure diagnosis device 3 and other connected terminal devices through the output unit 3f. Further, when a read execution instruction for vehicle accident information is input from the input unit 3b, the key information is read as first key information B 'from the event data recorder 2a. Then, the second key information B input from the second failure diagnosis unit 3d is collated with the first key information B ′, and the second key information B and the first key information B ′ are matched. Only when this is done, the information reading unit 3e is allowed to read the vehicle accident information from the event data recorder 2a. Note that in the failure diagnosis apparatus 3 in which the second failure diagnosis unit 3d is not provided, the second key information B is not input from the second failure diagnosis unit 3d. Thus, the first failure diagnosis unit 3c is provided as a first information processing unit and a vehicle accident information read permission unit.

  The second failure diagnosing unit 3d according to the second embodiment is a program unit that is provided only in the device particularly when reading the vehicle accident information from the event data recorder 2a, and the vehicle accident information from the input unit 3b. Is read out from the event data recorder 2a as second key information B and output to the first failure diagnosis unit 3c. Thus, the second failure diagnosis unit 3d is provided as the second information processing means.

  The information reading unit 3e reads the vehicle accident time information from the event data recorder 2a when the signal for permitting the reading of the vehicle accident time information is input from the first failure diagnosis unit 3c, and through the output unit 3f. The output is made to the liquid crystal part of the failure diagnosis device 3 or other connected terminal device. Thus, the information reading unit 3e is provided as a vehicle accident information reading unit.

  Next, the flow of the vehicle accident information reading process executed by the failure diagnosis apparatus 3 according to the second embodiment will be described with reference to the flowchart of FIG.

  First, in S201, the second failure diagnosis unit 3d reads the key information from the event data recorder 2a as the second key information B, and outputs it to the first failure diagnosis unit 3c.

  Next, in S202, the first failure diagnosis unit 3c reads key information from the event data recorder 2a as first key information B '.

  In step S203, the first failure diagnosis unit 3c checks whether the first key information B 'and the second key information B match.

  If the first key information B ′ matches the second key information B as a result of the collation in S203, the process proceeds to S204, and the first failure diagnosis unit 3c permits reading of the vehicle accident information, A read permission signal is output to the information reading unit 3e, and the information reading unit 3e reads the vehicle accident information from the event data recorder 2a, and is connected to the liquid crystal part of the failure diagnosis device 3 and other connections through the output unit 3f. Output to the terminal device.

  As described above, in the failure diagnosis apparatus 3 according to the second embodiment of the present invention, in the first failure diagnosis unit 3c, the first key information B ′ read from the event data recorder 2a by the first failure diagnosis unit 3c. And the second key information B read from the event data recorder 2a by the second failure diagnosis unit 3d, and when the first key information B ′ and the second key information B match, the event data Reading of vehicle accident information from the recorder 2a is permitted. Therefore, as in the first embodiment, personal information such as vehicle accident information is kept at a higher security level than general vehicle information, and personal information such as vehicle accident information is It is possible to prevent a dealer worker who does not require information from being easily read.

  In the first and second embodiments of the present invention, the key information recorded in the event data recorder 2a is formed by adding the serial number of the airbag control unit 2 itself or the vehicle body number of the attached vehicle 1. Therefore, personal information can be prevented from being easily read using key information obtained through another airbag control unit or a vehicle. Furthermore, since the key information recorded in the event data recorder 2a is formed differently for each counted number of times the ignition switch is turned on, it is effectively prevented that only the key information is extracted and used illegally. In the first and second embodiments of the present invention, as described above, the key information recorded in the event data recorder 2a includes the serial number of the airbag control unit 2 itself, the vehicle body number of the attached vehicle 1, the ignition switch, or the like. However, it may be formed including only one piece of information or only two pieces of information. In order to further improve the security level, an encryption process may be added when the first key information and the second key information are read, and collation may be performed.

  Furthermore, in the failure diagnosis apparatus 3 according to the first and second embodiments of the present invention, the vehicle failure information can be easily read from the event data recorder 2a by adding the second failure diagnosis unit 3d which is a software program. Since a function can be added, it is possible to provide a device for reading out vehicle accident information from the event data recorder 2a with high versatility and low cost.

  By adding the following configuration to the first and second embodiments described above, personal information can be read only when a specific worker uses the vehicle information reading device, and security can be improved. The performance can be further improved.

  That is, this configuration improves the security by allowing an operator to input and output using the input unit 3b, the output unit 3f, and the information reading unit 3e of the failure diagnosis apparatus 3.

  First, the first failure diagnosis unit 3c displays the key information A (or B) on the liquid crystal unit of the failure diagnosis device 3 through the output unit 3f and sends it to the second failure diagnosis unit 3d.

  At this time, the key information A (or B) includes the number of times the ignition switch is turned on, the serial number of the airbag control unit 2 itself, the vehicle body number of the vehicle 1, etc. A value that varies with time is desirable.

  Then, the information reading unit 3e obtains the input of the key information A ′ (or B ′) from the input unit 3b before reading the information at the time of the vehicle accident, and uses the input content as the second failure diagnosis unit 3d. Send to.

  Also, only when a signal permitting the reading of the vehicle accident information is returned from the second failure diagnosis unit 3d, the vehicle accident information is read from the event data recorder 2a, and the liquid crystal unit of the failure diagnosis device 3 is output through the output unit 3f. To display. Here, when reading of the vehicle accident information is not permitted from the second failure diagnosis unit 3d, the key information A ′ (or B ′) is again requested to be input, and a predetermined number of key inputs are set in advance. If not permitted by the second failure diagnosis unit 3d, the operation is terminated.

  The second failure diagnosing unit 3d receives the key information A from the first failure diagnosing unit 3c, and creates the key information A ″ by a predetermined conversion method.

  When the key information A ′ is sent from the information reading unit 3e to the second failure diagnosis unit 3d, the information reading is performed only when the key information A ′ and the key information A ″ are compared and collated. The unit 3e is allowed to read the vehicle accident information.

  The specific operator reads the key information A in advance by the first failure diagnosis unit 3c, and when requested to input the key information by the information reading unit 3e, the specific operator uses the key information notified in advance. A is converted and input as key information A ′.

Here, each key information is illustrated below.
Key information A: Number of times the ignition switch is turned on "1234"
: Serial number of airbag control unit 2 itself “****** abcd”
Key information A ′: 1234FHIabcd
Key information A ": 1234FHIabcd
The predetermined conversion method of the second failure diagnosis unit 3d is as follows.

Key information A "= (Ignition switch ON count 4 digits) +" FHI "+ (Airbag control unit 2 itself serial No. 4 digits)
The key information notified in advance to a specific worker is as follows.

Key information A '= (Ignition switch ON count 4 digits) + "FHI" + (Airbag control unit 2 itself serial No. 4 digits)
Here, the specific worker is a person who is permitted by the vehicle owner to read out the accident information or legally allowed to read out at the request of the court / police, etc. It is assumed that the person notified from the manufacturer about how to convert the key information A ′.

  As described above, the security can be further improved by adding the acquisition of the key conversion method by another communication means instead of automatically processing between the vehicle and the diagnostic machine.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Airbag control unit 2a Event data recorder (vehicle-mounted recording device: vehicle accident time information recording means)
3. Failure diagnosis device (vehicle information readout device)
3b Input unit 3c First failure diagnosis unit (first information processing means)
3d Second failure diagnosis unit (second information processing means, vehicle accident time information read permission means)
3e Information reading unit (vehicle accident information reading means)
3f output section

Claims (3)

The key information can be read as the first key information from the vehicle accident information recording means for recording the vehicle accident time information in the time before and after the vehicle accident together with the unique key information , and normal failure information in the vehicle can be read. First information processing means for processing,
Second information processing means capable of reading the key information as second key information from the vehicle accident information recording means;
A vehicle that permits reading of the vehicle accident information when the first key information read by the first information processing means matches the second key information read by the second information processing means. Accident information read permission means,
Vehicle accident information reading means for reading out the vehicle accident information from the vehicle accident information recording means when reading of the vehicle accident information is permitted by the vehicle accident information reading permission means;
A vehicle information reading device comprising:   2. The vehicle information reading device according to claim 1, wherein the vehicle accident time information reading permission means is provided in one of the first information processing means and the second information processing means. 3. The vehicle information according to claim 1, wherein the key information recorded by the vehicle accident information recording means is variable information depending on the number of times the vehicle accident information recording means is turned on. Reading device.

Images