JP2003312553A - Vehicle data recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle data recorder for correctly storing vehicle data. <P>SOLUTION: This vehicle data recorder comprises a vehicle data collecting means 103, a detector 101 to output an accident generation signal, a vehicle data recording area 107 constituted of a plurality of re-writable recording blocks to record vehicle data collected by the vehicle data collecting means 103, a record block control means 106 which selects a record block to record vehicle data, successively records vehicle data, selects a different record block by the output of the detector, starts the record of vehicle data, and stops the record in the record block recording vehicle data before the output by the detector in a predetermined time after the output by the detector, a non-volatile record area 110 to store the content of the record block, and a record block copying means 109 to copy the record content of the record block in the non-volatile record area 110. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for a vehicle mounted on an automobile or the like and is useful for prompt and quantitative investigation of the cause of an accident by recording vehicle information before and after an emergency such as a sudden change in behavior. It relates to a data recording device (drive recorder).

[0002]

2. Description of the Related Art FIG. 4 is a block diagram showing the structure of a conventional vehicle data recording apparatus disclosed in Japanese Patent Laid-Open No. 10-167127. In the figure, the sensor unit 1
Collects various vehicle data regarding vehicle traveling as signals. Reference numeral 2 denotes an interface unit of the microcomputer, which performs conversion for allowing the detection signal obtained by the sensor unit 1 to be input to the subsequent microcomputer unit 3 and takes it into the microcomputer unit 3. The microcomputer unit 3 includes a one-chip microcomputer 14 having a control program read out when necessary and a security lock mechanism for ensuring the safety of stored information, the above-mentioned battery backup or non-volatile RAM 16 for recording the captured signal, It is composed of a timer T that always emits the time at that time.
Reference numeral 19 is a reading device, which is the RAM 16 of the microcomputer unit 3.
It is a device for reading out the record of the driving operation status of the traveling vehicle stored in the above by connecting the flat cable 18 and the like from the connector 17. 23 is a driving situation analysis device 23,
It is composed of a personal computer 24, a display 25 and a printer 26.

In the vehicle data recording means in the microcomputer section 2 of the conventional vehicle data recording apparatus as described above, R
The AM 16 divides the area to be stored into n memory blocks in advance. The vehicle data to be written in the RAM 16 and the time signal issued from the timer T together with the RAM 16 for a fixed time
The data is recorded in the first memory block at a constant time interval, and is updated so that the last few seconds to several tens of seconds are always left. Then, when the acceleration value calculated from the vehicle speed signal or the acceleration due to the impact on the vehicle shows a value equal to or more than a threshold value, or when the airbag actuation signal is generated, any one of the generation conditions is used as a trigger and after a predetermined time after that time, The microcomputer 14 is programmed so that the recording operation is stopped, the recording in the first block of the RAM 16 thereafter is stopped, and only the recording for the last several seconds to several tens seconds is left and saved. Then, the next recording operation is performed immediately after the recording in the first memory block 27 is completed from 4 to 6 seconds after the trigger is generated.
The data is recorded in the memory block 28 next to the AM 16 in the same manner as above. In this manner, recording is repeatedly performed from the time when the trigger is generated until a predetermined time elapses, and subsequently, by each trigger, the next third memory block 29, the fourth memory block 30, the fifth memory block 31,
Recording is sequentially performed on the nth memory block 32,
When the trigger is generated during the recording of the nth memory block and the recording is stopped, the recording is immediately recirculated to the first memory block to perform the recording. In that case, the first past record will of course disappear. Further, the microcomputer unit 3 is provided with a security lock for preventing unauthorized reading of the record, thereby preventing unauthorized reading of the recorded vehicle data from the outside.

[0004]

In the vehicle data recording means in the microcomputer section 2 of the conventional vehicle data recording apparatus as described above, after writing in one memory block, the vehicle data is recorded in the next memory block. Start writing. Therefore, when an accident or sudden change in behavior is detected from the collected vehicle data (referred to as "first detection"), recording of the current memory block is stopped after a predetermined time, and then the next block is moved to the next block. To start writing. Then, immediately after the writing to the next memory block is started, when the occurrence of the accident or the sudden change in the behavior is detected again (referred to as "the second detection"), the recording is started immediately and the second time is detected. The recorded vehicle data recorded by the detection before the occurrence is shorter than that in the normal recording. At this time, the vehicle data before the second detection is recorded in the memory block recorded by the first detection, but when this memory block is erased by overwriting, the vehicle data recorded by the second detection is recorded. Since the amount before the occurrence detection is shorter than usual, it is difficult to use this to detect the cause of a clear accident or the cause of a sudden change in behavior.

On the other hand, in the vehicle data recording means in the microcomputer section 2 of this vehicle data recording apparatus, a distinction is made regarding a predetermined time until the recording of the memory block is stopped when an accident occurs and when a sudden behavior change is detected. Absent. Since the recording time before and after the detection of the vehicle data to be recorded is determined by the predetermined time until the recording of this memory block is stopped, the vehicle data can be recorded at a ratio before and after the occurrence that is suitable for investigating the cause of the accident and the cause of the sudden change in behavior. No
It is difficult to investigate the cause of a clear accident or sudden change in behavior using recorded vehicle data. In addition, in the memory block control method that selects the memory blocks that are used in sequence for each occurrence of an accident or sudden change in behavior, the vehicle data that is important depending on the degree of the accident or sudden change in behavior is used in all memory blocks. It is difficult to save important vehicle data because it will be overwritten by another vehicle data later. Furthermore, even if a security lock is applied to prevent unauthorized access, the vehicle data that has been read by a proper means may be tampered with or decrypted by a third party.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a vehicle data recording apparatus capable of accurately storing vehicle data.

An object of the first invention is to obtain a vehicle data recording apparatus capable of accurately storing vehicle data even when a vehicle needs to be continuously inspected, such as an accident or a sudden change in behavior. is there.

A second object of the present invention is to provide a vehicle data recording apparatus capable of accurately storing vehicle data even when accidents occur continuously in the vehicle.

A third object of the present invention is to provide a vehicle data recording device capable of accurately storing vehicle data even when a sudden change in behavior occurs continuously in the vehicle.

A fourth object of the present invention is to provide a vehicle data recording apparatus capable of accurately storing vehicle data in the case of an accident or a sudden change in behavior of the vehicle in accordance with the type of the accident or the sudden change in the behavior. .

A fifth object of the present invention is to provide a vehicle data recording apparatus capable of accurately storing vehicle data in accordance with the degree of importance of the vehicle even when the vehicle is continuously in a verification-required state. is there.

A sixth object of the present invention is to provide a vehicle data recording apparatus capable of accurately storing vehicle data without insufficient data even when the vehicle is continuously in a verification-required state.

A seventh object of the present invention is to provide a vehicle capable of accurately storing the vehicle data even in the case where the vehicle is continuously subjected to a verification-requiring situation and certifying that the vehicle data has not been tampered with by a third party. It is intended to obtain a data recording device for use.

An eighth object of the present invention is that vehicle data can be accurately saved even when a vehicle is continuously in a verification-required state, and vehicle data can be prevented from being tampered with and analyzed by a third party. It is intended to obtain a recording device.

A ninth object of the present invention is to accurately store the vehicle data even when the vehicle is continuously in the verification required state and to clarify the cause of the accident and the cause of the sudden change in behavior. The recorded vehicle data can be used outside the vehicle data recording device.

[0016]

In a vehicle data recording apparatus according to a first aspect of the present invention, vehicle data collecting means for collecting vehicle data and detection for outputting a generation signal indicating that a verification required status has occurred in the vehicle. Means, a vehicle data recording area composed of a plurality of rewritable recording blocks for recording the vehicle data collected by the vehicle collecting means, and a recording block for recording the vehicle data are selected to sequentially record the vehicle data, Recording in which another recording block is selected by the output of the detection means to start recording of vehicle data, and vehicle data is recorded after a predetermined time has elapsed from the output of the detection means and before the output of the detection means. Recording block control means for stopping recording on the block, a non-volatile recording area for storing the contents of the recording block, and the recording block A recording block copying means for copying the recorded contents of click in the nonvolatile recording area, in which comprises a.

In the vehicle data recording apparatus according to the second invention, vehicle data collecting means for collecting vehicle data, accident occurrence detecting means for outputting an accident occurrence signal indicating that an accident has occurred in the vehicle, and the vehicle. A vehicle data recording area composed of a plurality of rewritable recording blocks for recording the vehicle data collected by the collecting means and a recording block for recording the vehicle data are selected to sequentially record the vehicle data,
According to the output of the accident occurrence detection means, another recording block is selected to start recording the vehicle data,
It is possible to save the contents of the recording block, and recording block control means for stopping the recording in the recording block in which the vehicle data is recorded before the output by the accident occurrence detecting means, after a predetermined time from the output by the accident occurrence detecting means. A nonvolatile recording area and recording block copying means for copying the recorded contents of the recording block to the nonvolatile recording area are provided.

In the vehicle data recording apparatus according to the third aspect of the present invention, vehicle data collection means for collecting vehicle data and behavior sudden change occurrence detection that outputs a behavior sudden change occurrence signal indicating that a sudden change in behavior has occurred in the vehicle. Means, and a vehicle data recording area composed of a plurality of rewritable recording blocks for recording vehicle data collected by the vehicle collecting means,
The recording block for recording the vehicle data is selected, the vehicle data is sequentially recorded, and another recording block is selected by the output of the behavior sudden change occurrence detection means to start the recording of the vehicle data and the behavior sudden change occurs. Recording block control means for stopping recording in a recording block in which vehicle data is recorded before output by the behavior sudden change occurrence detecting means after a predetermined time from output by the detecting means, and non-volatile for storing contents of the recording block A recording area and a recording block copying means for copying the recorded contents of the recording block to the nonvolatile recording area are provided.

In the vehicle data recording apparatus according to the fourth aspect of the present invention, vehicle data collecting means for collecting vehicle data, accident occurrence detecting means for outputting an accident occurrence signal indicating that an accident has occurred in the vehicle, and vehicle Vehicle data recording including a behavioral sudden change detection means for outputting a behavioral sudden change occurrence signal indicating that a sudden change in behavior has occurred, and a plurality of rewritable recording blocks for recording vehicle data collected by the vehicle collecting means. Vehicle data is sequentially recorded by selecting a region and a recording block for recording vehicle data, and another recording block is selected according to the output of the accident occurrence detection means or the output of the behavior sudden change occurrence detection means, and the vehicle data is selected. When the occurrence of an accident and a sudden change in behavior are detected from the output of the accident occurrence detection means or the output from the behavior sudden change occurrence detection means. Recording block control means for stopping recording in a recording block in which vehicle data is recorded before the output of the accident occurrence detection means or the output by the sudden behavior change occurrence detection means after a predetermined time different from each other, and the recording block A non-volatile recording area that can save the contents,
Recording block copying means for copying the recorded contents of the recording block to the nonvolatile recording area.

A vehicle data recording apparatus according to a fifth aspect of the present invention is the vehicle data recording apparatus according to any one of the first to fourth aspects, further comprising recording data management means for managing the degree of importance of the vehicle data recorded in the recording block. The block control means selects, based on the information from the recording vehicle data management means, a recording block of low importance which is not being recorded,
The writing control of the recording block is performed.

In the vehicle data recording apparatus according to the sixth invention, in the first to fifth inventions, when the recording data time of the recording block is short when the detection signal is output by the detecting means, the shortage is generated. Recording time management means for calculating a data time and outputting a shortage occurrence signal,
When the shortage occurrence signal is output, a shortage data copying means for copying the vehicle data for the shortage data time from the previously recorded recording block is provided.

In the vehicle data recording apparatus according to the seventh invention, in the first to sixth inventions, data that can prove that the vehicle data recorded by the vehicle data collecting apparatus has not been tampered with by a third party. Is provided with a proof data addition means.

A vehicle data recording apparatus according to an eighth invention is the vehicle data recording apparatus according to any one of the first to seventh inventions, further comprising an encryption means for encrypting the vehicle data recorded by the vehicle data collecting apparatus.

A vehicle data recording device according to a ninth aspect of the invention is the vehicle data recording device according to any one of the first to eighth aspects of the invention, further comprising vehicle data output means for outputting the vehicle data recorded in the nonvolatile recording area.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. The first embodiment according to the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing a configuration of a vehicle data recording device that detects an accident occurrence from collected vehicle data according to the first embodiment.

In the structure of FIG. 1, 101 is an accident occurrence detecting means, which detects the occurrence of an accident in the vehicle using the vehicle data 104 as in the conventional example. A vehicle data collection unit 103 collects one or a plurality of vehicle data 104a to 104m related to the vehicle. Reference numeral 105 denotes recording vehicle data, which is a data format in which the vehicle data 104a to 104n collected at each predetermined cycle are collected. A vehicle data recording area 107 is composed of a plurality of recording blocks 108a to 108n having a recording capacity capable of recording vehicle data for a predetermined time. Reference numeral 106 denotes a recording block control means, which controls the start and stop of recording of the recording vehicle data 105 in the recording blocks 108a to 108n based on the output of the accident occurrence detection means 101. Reference numeral 109 denotes a recording block copying unit, which copies the recorded contents of the recording blocks 108a to 108n to the nonvolatile recording area 110. 111 is
Recording time management means, recording block 1 when an accident occurs
When the data time recorded in 08a to 108n is shorter than the predetermined time, the data time for the shortage is calculated and the shortage occurrence signal is output. Reference numeral 112 denotes a shortage data copying means, which copies the shortage vehicle data recorded in another recording block when the shortage occurrence signal is received. A vehicle data output unit 113 outputs the vehicle data recorded in the nonvolatile recording area 110 to an external device (not shown).

Next, the operation of the apparatus according to the first embodiment of the present invention will be described. First, vehicle data 10
4 is acceleration in the longitudinal direction of the vehicle, acceleration in the lateral direction of the vehicle, vehicle speed, wheel speed, vehicle acceleration, yaw rate, steering angle, steering angular velocity, brake pedal operation amount, accelerator throttle operation amount, gear position, side brake use Presence / absence, airbag deployment signal, presence / absence of light, light High / Low information, winker information, wiper usage information, horn usage information, seat belt wearing status, door lock information, GPS position information,
In addition to time information, there are sensors, actuators, switches, etc. Further, a measuring instrument, a sensor, a switch and the like may be mounted on the vehicle, and the data obtained therefrom may be used as the vehicle data. However, in this invention, the type of vehicle data to be collected is not limited, and a part of the above description, or
You may use it including the vehicle data not described.

Next, recording blocks 108a to 108n
The recording operation of the recording vehicle data 105 to and from will be described. The vehicle data for recording 105 is, as described above,
It is generated by the data collection means 103 every predetermined time. Of the recording blocks 108a to 108b, the recording vehicle data 105 is sequentially recorded at a predetermined time in a block in which recording is started by the recording block control unit 106. When the free space in the recording block is exhausted, the oldest recorded vehicle data is sequentially overwritten. Therefore, in the recording block being recorded, the vehicle data 104 for a certain time is always traced back to the recording vehicle data 105.
Will be saved as time series data.

Next, the operation of this apparatus when an accident occurs will be described. Before the accident occurrence detection unit 101 detects the accident occurrence, the recording block selected by the recording block control unit 106, for example, the recording block 108a.
As described above, the recording vehicle data 105 is sequentially recorded in the area. Here, when an accident occurrence is detected by the accident occurrence detecting means 101, the recording block control means 106 causes a recording block whose recording has not been started,
For example, recording vehicle data 10 in the recording block 108b
Recording of 5 is started. Also, the accident occurrence detection means 101
The recording of the vehicle data 105 in the recording block 108a that has recorded the recording vehicle data 105 at the time of the accident is stopped after a predetermined time from the detection of the accident. Therefore, the recording block 108a stores the vehicle data 104 before and after the detected accident. On the other hand, new recording vehicle data 105 is continuously recorded in the recording block 108b.

Next, the operation of this device when an accident occurs in the vehicle again will be described. When the accident occurrence detection means 101 detects the accident occurrence again, the recording block control means 10 is the same as in the case where the first accident is detected.
At 6, the recording of the recording vehicle data 105 to the recording block for which recording has not started, for example, the recording block 108c is started. Further, the recording block 1 that records the recording vehicle data 105 at the time of occurrence of the accident, a predetermined time after the accident occurrence is detected by the accident occurrence detecting means 101.
Recording of the vehicle data 105 at 08b is stopped. Therefore, the recording block 108b stores the vehicle data 104 before and after the detected accident. On the other hand, new recording vehicle data 105 is continuously recorded in the recording block 108c.

If there is not enough time between the first and second accident occurrence detections and the vehicle data before the second accident occurrence detection is not recorded in the recording block 118b for the required time, it is recorded. The time management unit 111 detects the shortage of the recording time, calculates the shortage vehicle data time, and outputs the shortage occurrence signal. Upon receiving this signal, the shortage data copying means 112 copies the calculated shortage time vehicle data from the previously recorded recording block 118a after the recording of the recording block 118b is stopped. Copying of vehicle data can be performed retroactively in multiple recording blocks if desired.

Further, when the accident detection continues, the recording block control means 106 stops the recording of the recording vehicle data 105 by the recording blocks 108a to 108n and starts the recording each time the accident occurrence detection means 101 detects the accident. Run. Recording block 108a already recorded
In the case of recording in ~ 108b, the already recorded vehicle data is overwritten and erased.

Here, when the key of the vehicle is turned off, the ignition is turned off, or a predetermined operation is performed, the recording block copying means 109 records vehicle data before and after the occurrence of an accident, which is recorded in the vehicle data recording area 107. Is copied to the nonvolatile recording area 110. Further, at the time of copying, the recording vehicle data 105 recorded in the recording block may be rearranged and copied in chronological order. As a matter of course, the vehicle data before and after the accident occurrence detection, which is copied to the nonvolatile recording area 110, can be saved even when the power is off. There is no problem even if either one or both of the recording block copying means and the 109 non-volatile recording area 110 is provided outside the vehicle data recording apparatus main body.

On the other hand, by the vehicle data output means 113,
By outputting the vehicle data before and after the accident occurrence detection stored in the non-volatile storage area 110 to the outside of the vehicle data recording device, the external analyzer can be used to analyze the vehicle data before and after the accident occurrence detection. it can.

The data output by the vehicle data output means 113 can be performed by an output device using a wireless or wired communication system, and the flexible disk (F
D) or a memory card or other recording medium. The same effect can be obtained by executing the vehicle data analysis in the vehicle data recording device and outputting only the result to the outside or accessing and reading from the outside.

On the other hand, when the recording block control means 106 detects an accident, by limiting the number of times the accident occurrence is detected within a fixed time after the detection, if a plurality of accidents are detected continuously, It is possible to prevent the same vehicle data from being recorded in most of the recording blocks.

Furthermore, when the recording vehicle data managing means for managing the degree of importance of the recorded vehicle data is provided, when all the recording blocks are used and it is unavoidable to overwrite the recorded recording blocks. However, the recording vehicle data management means can select and overwrite a recording block of low importance. By doing so, it is possible to protect the vehicle data before and after the occurrence, which is highly important. The importance of the recording block is determined from vehicle-related data such as the magnitude of acceleration at the time of detection of recorded vehicle data.

On the other hand, by providing the encryption means, the vehicle data can be encrypted when the writing to the recording block is stopped, and it is possible to prevent the vehicle data from being decrypted or tampered with.

The same effect can be obtained by collectively encrypting a plurality of recording blocks when copying data to the nonvolatile storage area 110, instead of performing the encryption for each recording block.

Furthermore, a proof data adding means for adding data that can prove that the data has not been tampered with by a third party is provided, and when the data is copied in each recording block or in the non-volatile storage area 110, the recording block By adding the proof data collectively to, it is possible to clarify whether the vehicle data read from the vehicle data recording device is tampered with at a later date.

According to the first embodiment of the present invention, vehicle data collecting means 103 for collecting vehicle data and accident occurrence detecting means for outputting an accident occurrence signal indicating that a verification required condition such as an accident has occurred in the vehicle. A detection unit 101, and a plurality of rewritable recording blocks 108 for recording the vehicle data collected by the vehicle collection unit 103.
a vehicle data recording area 107 composed of a, 108b ... 108n, and a recording block 108 for recording vehicle data
a, 108b ... 108n are selected, vehicle data are sequentially recorded, and by the output of the accident occurrence detection means,
108n is selected to start the recording of vehicle data, and at the same time, after a predetermined time has passed from the output of the detection means including the accident occurrence detection means 101, the accident occurrence detection means 101.
The recording block control means 1 for stopping the recording in any of the recording blocks 108a, 108b ...
06, and the recording blocks 108a, 108b ... 108
nonvolatile recording means having a nonvolatile recording area 110 capable of storing the contents of n, and the recording blocks 108a, 10
The recorded contents of 8b ... 108n are stored in the nonvolatile recording area 11
Since the recording block copying means 109 for copying to 0 is provided, a vehicle data recording device capable of accurately storing vehicle data without the need to retain a power source even when a vehicle is continuously in a verification-requiring situation such as an accident. Obtainable.

Further, according to the first embodiment of the present invention, in the above configuration, the recording blocks 108a, 1a
08b ... 108n is provided with recording data management means for managing the degree of importance of the vehicle data, and the recording block control means 106 is based on the information from the recording data management means, and the degree of importance when recording is not being executed. Since the recording block is controlled to be written by selecting a recording block with a low power consumption, the vehicle data can be accurately saved without the need to retain the power supply even when the vehicle continuously undergoes verification situations such as an accident. At the same time, it is possible to obtain the vehicle data recording device that can appropriately store the vehicle data according to the importance of the vehicle data.

Further, according to the first embodiment of the present invention, in the above configuration, when the accident occurrence signal is output by the accident occurrence detecting means 101 or the previous behavior sudden change occurrence signal is output by the behavior sudden change occurrence detecting signal 102. ,
When the recording data time before the output of the recording block is insufficient, the recording time management means 111 that calculates the insufficient data time and outputs a shortage occurrence signal, and when the shortage occurrence signal is output, Since there is provided the insufficient data copying means 112 for copying the vehicle data for the insufficient data time from the recording block previously recorded,
It is possible to obtain a vehicle data recording apparatus that can accurately store vehicle data without the need to retain a power source and can appropriately eliminate a data shortage even when a vehicle needs to be continuously verified such as an accident.

Further, according to the first embodiment of the present invention, in the above configuration, the vehicle data collection device 10
Since the vehicle data recorded in 3 is provided with proof data adding means for adding data that can prove that the vehicle data has not been tampered with by a third party, even when the vehicle needs to be continuously inspected, such as an accident. It is possible to obtain a vehicle data recording device that can accurately store vehicle data without the need to hold a power source and can prove that the vehicle data has not been tampered with by a third party.

Furthermore, according to the first embodiment of the present invention, in the above-mentioned structure, since the vehicle data recorded by the vehicle data collecting device is provided with the encryption means, the vehicle is protected from accidents or the like. Even if the verification situation occurs continuously, the vehicle data can be saved accurately without the need to keep the power supply, and the vehicle data can be tampered with by a third party.
It is possible to obtain a vehicle data recording device that can prevent analysis.

Further, the first embodiment according to the present invention
According to the above configuration, in the non-volatile recording area 1
Since the vehicle data output means 113 for outputting the vehicle data recorded in 10 is provided, the vehicle data can be accurately saved without the need to retain the power supply even when the vehicle is continuously in a verification required state such as an accident. In order to clarify the cause of an accident and the cause of a sudden change in behavior, it is possible to obtain a vehicle data recording device that makes recorded vehicle data available outside the vehicle data recording device.

Embodiment 2. A second embodiment according to the present invention will be described with reference to FIG. FIG. 2 is a configuration diagram of a vehicle data recording device for detecting occurrence of sudden behavior change from collected vehicle data according to the second embodiment of the present invention. In the second embodiment, the configuration other than the peculiar configuration described here has the same configuration as the configuration in the first embodiment described above, and exhibits the same operation. In the drawings, the same reference numerals indicate the same or corresponding parts.

The configuration of FIG. 2 is a vehicle data recording device in which a sudden behavior change detecting means 102 is provided instead of the accident occurrence detecting means 101 in the configuration of the vehicle data recording device shown in the first embodiment.

Numeral 102 is a behavior sudden change occurrence detecting means, which detects that a behavior sudden change occurs in the vehicle by using the vehicle data 104 as in the conventional example. The sudden change in behavior of the vehicle, which is the detection target of the sudden behavior change detection means 102, is an abnormal situation of the vehicle such as an abnormal start or sudden deceleration operation that does not lead to an accident. Such sudden changes in vehicle behavior are less important than accidents, but it is necessary to proceed with verification work such as investigating the cause.

In the operation state of the vehicle data recording device thus configured, the sudden behavior change detection means 102 detects the sudden behavior change occurrence, instead of the accident occurrence detection performed by the vehicle data recording device of the first embodiment. Is to do.
The control of the recording block at the time of detecting the sudden change in behavior is the same as the control of the recording block at the time of detecting the accident in the vehicle data recording apparatus of the first embodiment.

According to the second embodiment of the present invention, the vehicle data collection means 103 for collecting vehicle data and the sudden behavior change which outputs a sudden behavior change occurrence signal indicating that a verification required condition such as sudden change in behavior has occurred in the vehicle. A vehicle data recording area 107 composed of a detection means including an occurrence detection means 102, a plurality of rewritable recording blocks 108a, 108b ... 108n for recording vehicle data collected by the vehicle collection means 103, and vehicle data recording The recording block is selected, the vehicle data is sequentially recorded, and another recording block is selected by the output of the detection unit including the sudden behavior change detection unit 102 to start the recording of the vehicle data, and the behavior is suddenly changed. The behavior sudden change occurrence detecting means 10 after a predetermined time from the output by the detecting means including the occurrence detecting means 102. Recording block control means 106 for stopping recording in a recording block in which vehicle data is recorded before output by the detecting means, and non-volatile recording means having a non-volatile recording area 110 capable of storing the contents of the recording block. The recording block copying means 109 for copying the recorded contents of the recording block to the non-volatile recording area is provided, so that the vehicle data can be supplied with the power even when a verification-requiring situation such as a sudden change in behavior continuously occurs in the vehicle. It is possible to obtain a vehicle data recording device that can be saved accurately without the need for holding.

Embodiment 3. A third embodiment according to the present invention will be described with reference to FIG. FIG. 3 is a diagram showing an accident occurrence detection from the collected vehicle data according to the third embodiment of the present invention.
Or, it is a block diagram showing a configuration of a vehicle data recording device for detecting occurrence of a sudden change in behavior. In the third embodiment, the configuration other than the specific configuration described here has the same configuration as the configurations in the first and second embodiments described above, and exhibits the same operation. is there. In the drawings, the same reference numerals indicate the same or corresponding parts.

The configuration of FIG. 3 is a vehicle data recording device provided by adding the behavior sudden change occurrence detecting means 102 of the second embodiment to the configuration of the vehicle data recording device of the first embodiment. is there.

In the operation state of the vehicle data recording device thus configured, not only the accident occurrence detection is performed by the vehicle data recording device of the first embodiment, but also the behavior sudden change occurs by the behavior sudden change detection means 102. It is to detect. The control of the recording block at the time of detecting the accident occurrence or the detection of the sudden behavior change is the same as the control of the recording block at the time of detecting the accident occurrence in the vehicle data recording apparatus of the first embodiment.

Here, by recording the time when an accident occurs and when a sudden behavior change is detected, the predetermined time from the time when the accident occurrence is detected and the sudden behavior change is detected until the recording of the recording block is stopped is made different. It is possible to make a difference in the recording time before and after the detected vehicle data is detected. This makes it possible to record vehicle data before and after the occurrence of a ratio suitable for investigating the cause of the accident or the cause of the sudden change in behavior.

According to the third embodiment of the present invention, vehicle data collection means 103 for collecting vehicle data, accident occurrence detection means 101 for outputting an accident occurrence signal indicating that an accident has occurred in the vehicle, and vehicle 108n, a plurality of rewritable recording blocks 108a, 108b ... 108n for recording vehicle data collected by the vehicle collection means 103, and a behavior sudden change detection means 102 for outputting a behavior sudden change occurrence signal indicating that a sudden change in behavior has occurred. 108n for selecting the vehicle data recording area and the recording blocks 108a, 108b, ... 108n for recording the vehicle data, the vehicle data are sequentially recorded, and the output of the accident occurrence detecting means 101 or the sudden behavior change detection is detected. The output of the means 102 selects one of the other recording blocks 108a, 108b ... 108n. While starting recording of vehicle data, after a predetermined time different from the output of the accident occurrence detection means 101 or the output from the sudden behavior change occurrence detection means 102 at the time of the accident occurrence and the sudden behavior change occurrence, the accident occurrence detection means 101 Recording block control means 106 for stopping recording on any of the recording blocks 108a, 108b, ... 108n that record vehicle data before the output or the output by the sudden behavior change detection means 102, and the recording blocks 108a, 108b. Nonvolatile recording means having a nonvolatile recording area 110 capable of storing the contents of 108n, and the recording blocks 108a, 108b ... 10
The recording block copying means 109 for copying the recorded contents of 8n to the non-volatile recording area 110 is provided. Therefore, when an accident or sudden change in behavior occurs in the vehicle, the vehicle data can be retained according to the accident or the sudden change in behavior. It is possible to obtain a vehicle data recording device that can be accurately saved without need and that can appropriately perform the investigation of the cause of an accident or the investigation of the cause of a sudden change in behavior by using vehicle data having contents suitable for each cause investigation work.

[0057]

Since the present invention is configured as described above, it has the following effects.

According to the first aspect of the present invention, it is possible to obtain the vehicle data recording device capable of accurately storing the vehicle data even when the vehicle is continuously in the verification-required state.

According to the second aspect of the present invention, it is possible to obtain a vehicle data recording device capable of accurately storing vehicle data even when accidents occur successively in the vehicle.

According to the third aspect of the present invention, it is possible to obtain a vehicle data recording device capable of accurately storing vehicle data even when sudden changes in behavior occur continuously in the vehicle.

According to the fourth aspect of the present invention, it is possible to obtain a vehicle data recording device capable of accurately storing vehicle data according to whether an accident or a sudden change in behavior occurs in the vehicle.

According to the fifth aspect of the present invention, it is possible to obtain a vehicle data recording apparatus capable of accurately storing vehicle data in accordance with the degree of importance of the vehicle even when the vehicle is continuously in the verification required state.

According to the sixth aspect of the present invention, it is possible to obtain a vehicle data recording apparatus capable of accurately storing vehicle data without insufficient data even when the vehicle is continuously in the verification required state.

According to the seventh aspect of the present invention, the vehicle data can be accurately saved even when the vehicle is continuously in the verification required state, and it can be proved that the vehicle data has not been tampered with by a third party. A data recording device for a vehicle can be obtained.

According to the eighth aspect of the present invention, the vehicle data can be accurately saved even when the vehicle is continuously in the verification required state, and the vehicle data can be prevented from being tampered with and analyzed by a third party. A recording device can be obtained.

According to the ninth aspect of the present invention, the vehicle data can be saved accurately even when the verification-required situation continuously occurs in the vehicle, and the cause of the accident and the cause of the sudden change in behavior can be clarified. It is possible to obtain a vehicle data recording device that makes the recorded vehicle data available outside the vehicle data recording device.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a vehicle data recording device that detects an accident occurrence from collected vehicle data according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a vehicle data recording device for detecting occurrence of sudden behavior change from collected vehicle data according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a vehicle data recording device for carrying out an accident occurrence detection and a behavior sudden change occurrence detection from collected vehicle data according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a vehicle data recording device in a conventional technique.

[Explanation of symbols]

101 accident occurrence detection means, 103 vehicle data collection means, 104a to n vehicle related data, 105 recording vehicle data, 106 recording block control means, 10
7 vehicle data recording area, 108a to n plural recording blocks, 109 recording block copying means, 110 non-volatile recording area, 111 recording time management means, 112 insufficient data copying means, 113 vehicle data output means, 102
Abrupt behavior change detection means, 1 sensor section, 2 interface section, 3 microcomputer section, 4 vehicle speed sensor, 5
Handle position sensor, 6 Brake voltage reading circuit, 7 Acceleration sensor, 8 Airbag actuation sensor, 9 Throttle position sensor, 10 Change lever position sensor, 11 Winker lamp circuit, 12
Timer / counter unit, 13 ports, 14 one-chip microcomputer, 15 ALU, 16
RAM, 17 connectors, 18 flat cable,
19 reader, 20 security decryption mechanism, 21
One-chip microcomputer, 22 non-volatile memory, 23 operating condition analysis device, 24 personal computer, 25 display, 26 printer,
27-32 memory blocks.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takanori Matsunaga             2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo             Inside Ryo Electric Co., Ltd. (72) Inventor Takashi Maeda             2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo             Inside Ryo Electric Co., Ltd.

Claims (9)

[Claims] 1. A vehicle data collecting means for collecting vehicle data, a detecting means for outputting a generation signal indicating that a verification-required situation has occurred in a vehicle, and a rewritable means for recording vehicle data collected by the vehicle collecting means. A vehicle data recording area composed of a plurality of recording blocks and a recording block for recording the vehicle data, the vehicle data is sequentially recorded, and another recording block is selected according to the output of the detecting means, Recording block control means for starting recording of data and stopping recording on a recording block in which vehicle data is recorded before output by the detection means after a predetermined time from output by the detection means; A non-volatile recording area that can save the contents,
A data recording device for a vehicle, comprising: a recording block copying means for copying the recorded contents of the recording block to the nonvolatile recording area. 2. A vehicle data collection means for collecting vehicle data, an accident occurrence detection means for outputting an accident occurrence signal indicating that an accident has occurred in the vehicle, and a rewrite for recording the vehicle data collected by the vehicle collection means. A vehicle data recording area composed of a plurality of possible recording blocks and a recording block for recording the vehicle data are selected to sequentially record the vehicle data, and another recording block is selected by the output of the accident occurrence detection means. Then, the recording block control for starting the recording of the vehicle data and stopping the recording in the recording block in which the vehicle data is recorded before the output by the accident occurrence detecting means after a predetermined time from the output by the accident occurrence detecting means. Means, a nonvolatile recording area in which the contents of the recording block can be stored, and the recording contents of the recording block And a recording block copying means for copying to a data recording area. 3. Vehicle data collection means for collecting vehicle data, sudden behavior change detection means for outputting a sudden behavior change signal indicating that a sudden change in behavior has occurred in the vehicle, and vehicles collected by the vehicle collection means. A vehicle data recording area composed of a plurality of rewritable recording blocks for recording data and a recording block for recording the vehicle data are selected to sequentially record the vehicle data. The recording block is selected to start recording the vehicle data, and at a predetermined time after the output by the sudden behavior change detecting means, the vehicle data is recorded before the output by the sudden behavior change detecting means. Recording block control means for stopping the recording of the recording block, a nonvolatile recording area for storing the contents of the recording block, and the recording block. A data recording device for a vehicle, comprising: a recording block copying means for copying the recorded contents of the lock to the nonvolatile recording area. 4. A vehicle data collection means for collecting vehicle data, an accident occurrence detection means for outputting an accident occurrence signal indicating that an accident has occurred in the vehicle, and a behavior indicating that a sudden change in behavior has occurred in the vehicle. A behavior sudden change occurrence detecting means for outputting a sudden change occurrence signal, a vehicle data recording area composed of a plurality of rewritable recording blocks for recording vehicle data collected by the vehicle collecting means, and a recording block for recording vehicle data are provided. The vehicle data is selected and sequentially recorded, and another recording block is selected by the output of the accident occurrence detection means or the output of the sudden behavior change occurrence detection means to start the recording of the vehicle data and the accident occurrence detection is performed. From the output of the means or the output by the sudden behavior change detection means, after a predetermined time that is different when an accident occurs and when the sudden behavior change occurs, the accident occurrence detection Recording block control means for stopping recording in a recording block in which vehicle data is recorded before the output of the means or the output by the sudden behavior change detection means, a non-volatile recording area capable of storing the contents of the recording block, and A data recording device for a vehicle, comprising: a recording block copying means for copying the recorded contents of the recording block to the nonvolatile recording area. 5. A recording data management means for managing the importance of the vehicle data recorded in the recording block,
7. The recording block control means selects a recording block of low importance which is not being recorded and controls writing of the recording block based on the information from the recording data management means. 1 to claim 4
The vehicle data recording device according to any one of 1. 6. A recording time management means for calculating a shortage data time and outputting a shortage occurrence signal when the recording data time of the recording block is short when the generation signal is output by the detection means. 2. When the shortage occurrence signal is output, a shortage data copying means for copying the vehicle data for the shortage data time from the previously recorded recording block is provided.
6. The vehicle data recording device according to claim 5. 7. The proof data adding means for adding data that can prove that the vehicle data recorded by the vehicle data collecting device has not been tampered with by a third party. Item 7. The vehicle data recording device according to any one of items 6. 8. The vehicle data recording device according to claim 1, further comprising an encryption unit that encrypts the vehicle data recorded by the vehicle data collection device. 9. The vehicle data recording device according to claim 1, further comprising vehicle data output means for outputting vehicle data recorded in the nonvolatile recording area.