JP2022106760A - Potential accident recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a potential accident recording device that enables a plurality of drivers to share necessary potential accident information.

SOLUTION: A potential accident recording device 200 of an embodiment includes a flag providing unit that provides a recording medium having recorded thereon video data captured by a camera of a drive recorder 100 with a flag for distinguishing whether to share potential accident information including video data before and after an occurrence of a potential accident and positional information, for each recording medium.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a potential accident recording device that records potential accident information.

A drive recorder is a device that captures images of the outside and inside of a vehicle with a camera and records the captured image data on a removable recording medium such as a micro SD card. The recording of the video data of the drive recorder is performed continuously from the start of the engine to the stop of the engine, for example.

Such a drive recorder is equipped with GPS and is provided so as to be able to detect the position where the vehicle is traveling. Then, there is a drive recorder having a notification function of notifying a hiyari hat using GPS. A hiyari hat is a situation that did not lead to an accident but could have caused an accident.

In order to operate the notification function of the hiyari hat in the drive recorder, it is necessary to record the hiyari hat and its position information on a recording medium in advance. Then, when the position of the vehicle detected by GPS approaches or reaches the position recorded in advance, information indicating a warning is notified by screen display or voice output.

International Publication No. 2008/010392

For example, in a transportation company and a taxi company, different drivers run in the same area. Therefore, each driver is likely to run at the same point registered as a hiyari hat. Therefore, it is preferable that all drivers can share the hiyari hat. In order to deal with this, for example, the information of the hiyari hat recorded in the drive recorders of a plurality of vehicles is stored in an external database. The drive recorder of each vehicle acquires the information of the hiyari hat from the database and notifies a warning when the vehicle approaches the position corresponding to the hiyari hat.

However, there are various types of information on hiyari hats acquired from a plurality of vehicles, and the number of them is enormous. Therefore, even if the information is necessary for one driver, there is some information that is unnecessary for another driver. In addition, there is some information that is not appropriate as a hiyari hat in the first place.

If all of this information is included and recorded on the drive recorders of all vehicles as a hiyari hat, warnings will be issued frequently, which is complicated for each driver. In addition, since the storage capacity of the storage medium of the drive recorder is small, it is desired to avoid wasting the storage area due to unnecessary information on the hiyari hat.

The present invention has been proposed to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a latent accident recording device capable of sharing necessary latent accident information by a plurality of drivers. It is in.

In order to achieve the above object, the latent accident recording device of the present invention obtains latent accident information including video data and position information before and after the occurrence of the latent accident from a recording medium recording the video data captured by the camera of the drive recorder. A reading unit for reading, a writing unit for writing the latent accident information on the recording medium, a flag giving unit for assigning a flag for distinguishing whether or not the latent accident information is shared for each recording medium, and a flag giving unit. Has.

Further, the latent axis recording device of the present invention includes a communication unit that transmits / receives information to and from the drive recorder via a network, and video data and positions before and after the occurrence of a latent accident received by the communication unit from the drive recorder. It has a flag giving unit that gives a flag for distinguishing whether or not to transmit to each drive recorder to the latent accident information including the information according to each drive recorder.

According to the present invention, it is possible to provide a potential accident recording device in which a plurality of drivers can share necessary potential accident information.

It is an overall block diagram which shows the potential accident recording system of 1st Embodiment. It is a front side perspective view which shows the drive recorder of 1st Embodiment. It is a rear side perspective view which shows the drive recorder of 1st Embodiment. It is a perspective view which shows the memory card accommodating part of the drive recorder of 1st Embodiment. It is a perspective view which shows the installation example of the drive recorder of 1st Embodiment. It is a hardware block diagram of the drive recorder of 1st Embodiment. It is a functional block diagram of the control part of the drive recorder of 1st Embodiment. It is explanatory drawing which shows the format of video data and potential accident information. It is explanatory drawing which shows the warning example of the potential accident information. It is a functional block diagram of the control device of the potential accident recording device of 1st Embodiment. It is a flowchart which shows the procedure of the flag addition of 1st Embodiment. It is a flowchart which shows the procedure of collecting and notifying the latent accident information of 1st Embodiment. It is a functional block diagram of the control part of the drive recorder of the 2nd Embodiment. It is a functional block diagram of the control part of the drive recorder of the 3rd Embodiment. It is a functional block diagram of the control device of the potential accident recording device of the third embodiment. It is a flowchart which shows the weighting procedure of 3rd Embodiment. It is a functional block diagram of the control part of the drive recorder of 4th Embodiment. It is a functional block diagram which shows the latent accident storage part of another embodiment.

[First Embodiment]
[Overview]
A first embodiment for carrying out the present invention will be described with reference to the drawings. The present embodiment is a latent accident recording system in which latent accident information collected by a drive recorder installed in a certain vehicle can be used by a drive recorder installed in another vehicle, that is, shared. A potential accident is a situation in which an accident may occur, although the accident did not occur. So-called hiyari hats, near misses, etc. are included in potential accidents.

As shown in FIG. 1, the potential accident recording system S includes a drive recorder 100 and a potential accident recording device 200 connected via a network N. The drive recorder 100 is a device that captures the outside of vehicles C1, C2, C3 ... (Hereinafter referred to as C when the vehicle is not distinguished) with a camera and records the captured video data on a recording medium.

As the recording medium, a removable medium such as a memory card M is used. For example, the drive recorder 100 is mounted on a plurality of vehicles C for providing services of a transportation company, a taxi company, and the like. Identification information that identifies the driver or vehicle C is recorded on the memory card M. Further, a flag for distinguishing whether or not to share the potential accident information is recorded on the memory card M. Sharing latent accident information means recording latent accident information, reading recorded latent accident information, transmitting recorded latent accident information, and writing recorded latent accident information to other recording media. Includes at least one of the things. Not sharing latent accident information means not recording latent accident information, not reading recorded latent accident information, not transmitting recorded latent accident information, and recording recorded latent accident information in other recording media. Includes at least one of not writing to. The flag of this embodiment is a flag for distinguishing whether or not to record potential accident information. The memory card M may be any removable recording medium, and various media such as an SD card and a micro SD card can be used.

The potential accident recording device 200 is a device that reads the information recorded in the memory card M of each drive recorder 100, creates a database, and records the information. The potential accident recording device 200 is composed of computers such as a PC, a server, a tablet, and a smartphone. The potential accident recording device 200 is used by an entity that manages all or part of the potential accident recording system S. For example, the latent accident information of each drive recorder 100 is collected in the latent accident recording device 200, and based on this, the operator OP of an organization that provides services such as a transportation company and a taxi company supports safe driving of each driver. do.

As the network N, various communication networks that can be used now or in the future, such as the Internet and a dedicated communication network, can be applied. For example, the drive recorder 100 is connected to the network N by tethering using Wi-Fi (registered trademark), Bluetоth (registered trademark), USB, etc. via an information communication terminal T such as a smartphone or a wearable device. The information communication terminal T such as a smartphone or a wearable device can also be used as an information input device for the drive recorder 100. The potential accident recording device 200 is connected to the network N via a communication device such as a router.

[drive recorder]
[Appearance configuration]
The external configuration of the drive recorder 100 of the present embodiment will be described with reference to FIGS. 2 to 5. 2 is a front perspective view, FIG. 3 is a rear perspective view, FIG. 4 is a bottom side perspective view, and FIG. 5 is a perspective view showing an installation example in a vehicle. In the present specification, the z-axis direction shown in the drawings is referred to as "upper side", and the opposite direction is referred to as "lower side". In explaining the configuration of each member, "bottom" is also referred to as "bottom". The z-axis direction may be referred to as the vertical axis direction. Further, the y-axis direction shown in FIG. 2 is the front side, and the opposite side is the back side. The front side may be referred to as the front side, and the back side may be referred to as the rear side. "Upper", "lower", "front side", "rear side", "front", and "rear" refer to the positional relationship of each configuration when the drive recorder 100 is installed in a normal manner (FIG.). 5).

The appearance configuration of the drive recorder 100 will be described. As shown in FIGS. 2 to 4, the drive recorder 100 includes a main body 101, a bracket 102, a camera 103, a display 104, a button 105, a lamp 106, an audio output port 107, a memory card accommodating unit 108, and an audio input port 109. ..

The main body 101 is a housing having a substantially rectangular cuboid shape. The bracket 102 is a member that attaches the main body 101 to the vehicle. The camera 103 is a device that images the outside of the vehicle. The lens of the camera 103 is provided on the front side of the main body 101. One end of the bracket 102 is attached to the upper part of the main body 101, and the other end is attached to a predetermined position in the windshield FG of the vehicle via double-sided tape or the like so that the lens of the camera 103 faces the front of the vehicle. (See FIG. 5). Further, power is supplied to the drive recorder 100 from the vehicle by being connected to the cigar lighter socket of the vehicle via the power cable L. The installation position of the drive recorder 100 may be on the dashboard.

The display 104 is a display device such as a liquid crystal display provided on the back side of the main body 101 and displaying various information. The display 104 may be integrally configured with the touch panel. The button 105 is a switch that presses various instruction inputs. The lamp 106 is a member that displays various types of information by emitting light. The audio output port 107 is an opening for outputting the audio of the speaker 114, which will be described later. As shown in FIG. 4, the memory card accommodating portion 108 is a slit-shaped slot provided in the lower part of the main body 101, and the memory card M is inserted and removed in the slot. The voice input port 109 is an opening for inputting voice to the microphone 115, which will be described later.

[Internal configuration]
Next, the internal hardware configuration of the drive recorder 100 will be described with reference to the block diagram of FIG. In addition to the camera 103, the display 104, the button 105, the lamp 106, and the memory card accommodating portion 108, the drive recorder 100 includes an acceleration sensor 110, a GPS receiver 111, a clock 112, a temporary memory 113, a speaker 114, and a microphone 115. It has a memory card interface 116 and a control unit 120.

The camera 103 is an input device having an optical member such as a lens and an image sensor which is a light receiving element such as CMOS or CCD. Since the camera 103 is installed as described above, it is possible to capture an image in front of the vehicle. It should be noted that the camera may have a camera that captures an image of the inside of the vehicle.

The display 104 is an output device that displays moving images and still images. The display 104 displays information such as an image captured by the camera 103, a setting screen of the drive recorder 100, guidance information, and warnings in a predetermined layout. The display 104 can display a live view image that displays the image captured by the camera 103 in real time, or can reproduce the image recorded on the memory card M.

The button 105 is an input device in which a user such as a driver inputs a desired instruction to the drive recorder 100. The button 105 can select a menu displayed on the display 104 and input instructions such as recording and erasing information. For example, the button 105 and the touch panel function as an input unit for the user to record the occurrence of a latent accident and to instruct and input the recorded latent accident information. Although not shown, a remote controller for remotely controlling the drive recorder 100 via infrared rays also functions as an input unit.

The lamp 106 is an output device that notifies the user of specific information by continuously emitting light, turning off, blinking, or the like. A light emitting LED is used as the lamp 106. The lamp 106 can indicate, for example, a power-on, a warning, or the like by emitting light. The memory card accommodating unit 108 is a recording medium accommodating unit that accommodates the memory card M. The memory card accommodating unit 108 establishes an electrical connection between the accommodating memory card M and the drive recorder 100.

The acceleration sensor 110 is a sensor that detects the acceleration of the drive recorder 100 or the installation target. The acceleration sensor 110 of the present embodiment uses a 3G sensor that detects acceleration in the three-axis directions of the x-axis, the y-axis, and the z-axis. Based on the acceleration detected by the acceleration sensor 110, it is possible to determine the impact applied to the vehicle equipped with the drive recorder 100, the movement of the vehicle such as sudden acceleration and deceleration, and the vibration during idling.

The GPS receiver 111 is a position detection unit that receives radio waves from GPS satellites and detects the current position of the vehicle based on the distance to the GPS satellites and the position of the GPS satellites. The clock 112 is a device that measures and outputs the date and time. The clock 112 outputs the date and time of recording video data, occurrence of a potential accident, and the like. The temporary memory 113 is a cache memory that temporarily holds an electric signal converted from light received by the image sensor of the camera 103.

The speaker 114 is an output device that informs the user of specific information by voice. The microphone 115 is an input device equipped with a drive recorder 100 that converts voice in a vehicle into an electric signal and inputs it. The voice includes a noise, a voice of a living thing, and the like. The memory card interface 116 is an interface for writing data to the memory card M accommodated in the memory card accommodating unit 108, reading data from the memory card M, formatting the memory card M, and the like.

As will be described later, the display 104, the lamp 106, and the speaker 114 are notification units that notify a warning when a vehicle equipped with the drive recorder 100, that is, the own vehicle approaches the position of the potential accident information.

The control unit 120 controls the operation of each unit of the drive recorder 100. The control unit 120 is a so-called computer that is mainly composed of a processor that is a central processing unit and is provided with various memories, input / output interfaces, and the like. The processor performs arithmetic processing for inputting, storing, outputting, etc. of information and controlling peripheral devices according to the main program.

The memory includes EEPROM and RAM. The EEPROM is a writable non-volatile memory in which programs, data, and settings for performing various processes for the processor to control each part are stored. The RAM is a memory that functions as a work area or the like when a processor performs processing. The input / output interface converts information that the processor inputs and outputs to and from the outside.

Further, the drive recorder 100 is provided with a gyro sensor 117, an in-vehicle CAN signal port 118, and a communication unit 119. The gyro sensor 117 is a sensor that detects the angular velocity of the drive recorder 100 or the installation target. The in-vehicle CAN signal port 118 is a vehicle information acquisition unit that acquires various information for the self-diagnosis function of the vehicle's ECU, such as OBD-II. The in-vehicle CAN signal port 118 is connected to, for example, the vehicle's OBD-II connector via an adapter cable. Vehicle information includes vehicle speed, accelerator opening, brake opening, turn signal operation, and steering angle of the steering wheel. When the in-vehicle CAN signal port 118 is connected to the vehicle, the power can be supplied without using the power cable L connected to the main body 101. The communication unit 119 is a processing unit that transmits / receives information to / from the outside. The communication unit 119 is connected to the network N by tethering using, for example, Wi-Fi (registered trademark), Bluetоth (registered trademark), USB, etc. via the information communication terminal T, and is connected to the potential accident recording device 200. It is a communication module that sends and receives information with. The communication unit 119 may use a communication module that can be connected to the network N without going through the information communication terminal T by having a connection function with a base station according to a communication standard such as 3G or 4G. can.

(Each processing unit of the control unit)
The control unit 120 functions as various processing units by the processor reading and executing various programs, data, and various settings stored in the memory. The present invention can also be grasped as a program as described above and a computer-readable storage medium in which such a program is recorded. In the following description, a block diagram in which the functions of each processing unit are illustrated by blocks is used. The programs, data, and settings include the case where they are recorded on the memory card M.

As shown in FIG. 7, the control unit 120 includes a video recording unit 21, a detection unit 22, a voice recognition unit 23, an image recognition unit 24, a potential accident recording unit 25, a position determination unit 26, a warning output unit 27, and a flag recognition unit. 28, has a traveling state recording unit 29.

The video recording unit 21 continuously records video data, which is a moving image captured by the camera 103, on the memory card M. Continuous recording means continuous recording for a predetermined time, and is also called continuous recording. For example, continuous recording is performed from engine start to engine stop. That is, while power is being supplied to the drive recorder 100, continuous recording is performed. However, when recording a potential accident, which will be described later, the recording may be temporarily interrupted and then resumed. The video recording unit 21 may record at least video data, but in the present embodiment, the audio signal input from the microphone 115 at the time of imaging by the camera 103 continues to the memory card M as audio data together with the video data. And record.

More specifically, the video recording unit 21 records the video data captured by the camera 103 and the audio data input from the microphone 115 from the temporary memory 113 to the memory card M via the memory card interface 116. At this time, as shown in FIG. 8, video data and audio data at regular time intervals are created as one file, and the file is recorded in a predetermined storage area of the memory card M. In the example of FIG. 8, one file is 60 seconds. When the free space of the predetermined storage area of the memory card M is insufficient, the newest file is sequentially overwritten and recorded in the storage area in which the oldest file is recorded.

The detection unit 22 detects the occurrence of a potential accident. The occurrence of a potential accident can be detected by various methods. The detection of the detection unit 22 is performed with a trigger when various generation conditions recorded in the memory as presets are satisfied. For example, when the input measured value exceeds various set threshold values, is less than the threshold value, is within or outside the upper and lower threshold values, the detection unit 22 is used. Detect that it is a potential accident. These threshold values may be set in the memory by default, or may be input by the user operating the button 105 while looking at the setting screen. In addition, the occurrence condition can be updated, added, changed, deleted, etc. when the program is updated.

The voice recognition unit 23 recognizes the volume, frequency, and the like of the voice input from the microphone 115. Recognizing volume, frequency, etc. means analyzing and specifying volume, frequency, etc. The image recognition unit 24 recognizes the position, shape, color, and the like of a specific target in the video data captured by the camera 103. Recognizing a position, shape, color, etc. means analyzing and specifying a position, shape, color, etc.

In order to detect a potential accident by the detection unit 22, the recognition result by the voice recognition unit 23 and the image recognition unit 24 was acquired by the acceleration sensor 110, the GPS receiver 111, the wearable device, the gyro sensor 117, and the in-vehicle CAN signal port 118. Measured values and the like can be used. Examples of detection of potential accidents based on this information and occurrence conditions are as follows.

Impact: When the value of the acceleration sensor exceeds the threshold value Speed: The speed calculated based on the GPS signal, the speed acquired by the in-vehicle CAN signal port 118 (for example, as shown in the vehicle C2 in FIG. 1). If the speed exceeds the threshold value, it will be detected as a potential accident.)
Sudden acceleration / deceleration: When the value of the acceleration sensor exceeds the threshold value (for example, as shown in the vehicle C1 in FIG. 1, when there is a pop-out and a sudden brake is applied, it is assumed that there is a sudden deceleration. , Detected as a potential accident.)
Sudden handle: When the value of the gyro sensor exceeds the threshold value Idling: When the speed is stopped below the threshold value and the vibration detected by the accelerometer exceeds the threshold value Loud sound: Detected by the microphone When the volume of the sound exceeds the threshold

Furthermore, the following generation conditions can be set.
(A) When the volume and frequency of the voice recognized by the voice recognition unit 23 exceed the threshold value, when the volume and frequency are within the upper and lower limits of a predetermined threshold value, and the like, the detection unit 22 Detects as a potential accident. For example, it is detected as a latent accident by recognizing a human voice such as a scream or a scream, and a sound such as a tire squeal sound, an ABS operation sound, a crash sound at the time of another vehicle accident, or a horn sound.

(B) When the distance between the lane and the own vehicle is recognized from the image recognized by the image recognition unit 24 and the deviation amount exceeds the threshold value, the distance from the vehicle in front is less than the threshold value. If it does, it will be detected as a potential accident.

(C) Based on the signals from the wearable device, the detection unit 22 detects as a potential accident when the values indicated by these signals exceed the threshold value. For example, when the values such as pulse and blood pressure from the sensor of the wearable device exceed the threshold value, it is detected as a potential accident.

(D) The detection unit 22 detects as a potential accident even when an instruction is input by the user. Examples of the mode of instruction input include operations of the button 105 and the touch panel, instruction input from the remote controller, instruction input from a smartphone or a wearable device, and the like. It should be noted that the same function as the instruction input can be exhibited even when the user intentionally makes a loud voice or gives vibration to the main body 101. For example, even if the driver recognizes a dangerous obstacle, it can be used when the running condition of the vehicle is normal.

(E) The detection unit 22 detects a potential accident by evaluating the acceleration in the vertical axis direction relatively lower than the acceleration in the other axial directions among the signals from the acceleration sensor 110. Relatively low evaluation means that the effect of acceleration in the vertical axis direction on the detection of potential accidents is lower than the effect of acceleration in other axial directions on the detection of potential accidents. The vertical axis direction is a direction along the z-axis, and the downward direction when the drive recorder 100 is installed horizontally is the gravity direction. This can be realized by excluding the acceleration in the vertical axis direction, determining the threshold value of the acceleration in the vertical axis direction higher than the threshold value in the other axial directions, and the like. For example, as shown in vehicle C3 of FIG. 1, vibration in the vertical axis direction due to a step or a hole in a road may exceed a threshold value even if it is not a potential accident, and even in that case, it is recorded as potential accident information. It ends up. Therefore, by excluding the signal in the vertical axis direction or increasing the threshold value among the signals from the acceleration sensor 110 in the three-axis direction, it is possible to eliminate that information that is not a latent accident is recorded as a latent accident.

When the detection unit 22 detects a potential accident, the potential accident recording unit 25 includes information that distinguishes the video data before and after the occurrence of the potential accident from the video data recorded by the video recording unit 21, and position information. Record potential accident information. The information distinguished from the video data recorded by the video recording unit 21 may be a copy of the video data before and after the occurrence of the potential accident, or data with identification information that gives a delimiter before and after the occurrence of the potential accident. It may be. In the present embodiment, when a latent accident is detected, the latent accident recording unit 25 records video data from before a predetermined time at the time of detection to after a predetermined time by the video recording unit 21. Copy and store from video data. The predetermined time is, for example, about one and a half to two minutes. The cause of the accident is based on the fact that it has been verified that the cause is a few minutes before the accident, not after the accident. The position information is the position information of the vehicle detected by the GPS receiver 111. The potential accident information may include at least information and location information that are distinguished from the video data recorded by the video recording unit 21, but in the present embodiment, information that is distinguished from the audio data recorded together with the video data. Also includes. That is, it includes a copy of audio data corresponding to the video data before and after the occurrence of the potential accident, or data with identification information that gives a delimiter before and after the occurrence of the potential accident.

More specifically, as shown in FIG. 8, among the files created by video recording, another file is created by using the file at the time of the occurrence of a potential accident. For example, if a latent accident occurs at a time (ta) 40 seconds after the start time (t0) of the file created at the time of video recording, the latent accident recording unit 25 starts from t0 to 60 seconds before the occurrence of the latent accident 20 seconds. Video data for a period of t0-60 seconds to ta + 20 seconds is created as one file until later, that is, the file is recorded in a predetermined storage area of the memory card M. Further, if a latent accident occurs at a time (tb) 20 seconds before the start time (t0) of the file created at the time of video recording, the latent accident recording unit 25 starts from t0 to 120 seconds before the occurrence of the latent accident 20 seconds. The video of the period from t0-120 seconds to tb + 20 seconds is created as one file until later, that is, the file is recorded in a predetermined storage area of the memory card M.

In this way, the potential accident is recorded at least for the length of time that the video recording unit is plural. In this example, by recording the latent accident so that the time length is at least two files, it is possible to secure an image one and a half to two minutes before the occurrence of the latent accident. Conventionally, only one file before the occurrence of a potential accident was recorded, but in the present embodiment, the possibility of being useful for investigating the cause of the accident is increased by including the case of intentionally recording a plurality of files. The file of the potential accident information is recorded in a storage area different from the storage area of the memory card M in which the file for video recording is stored. The time length of each file is not limited to the length illustrated above.

The detection of the latent accident of the detection unit 22 includes the case where the user inputs an instruction from the input unit as described above. That is, the latent accident recording unit 25 can record the latent accident information even by inputting an instruction by the user. Examples of the mode of instruction input include operation of the button 105 and the touch panel, operation input from the remote controller, instruction input from a smartphone or a wearable device, and the like. When such an input is received, the detection unit 22 outputs a command prompting the potential accident recording unit 25 to record the potential accident.
In addition, the potential accident recording unit 25 can also delete the potential accident information. The mode of instruction input is the same as the instruction input for recording the potential accident information.

The position determination unit 26 determines that the current position detected by the GPS receiver 111 has approached the position indicated by the position information included in the potential accident information. Approaching means that the distance between the current position of the vehicle and the position of a potential accident is within a predetermined distance.

The warning output unit 27 outputs a warning when the position determination unit 26 determines that the current position of the vehicle is close to the position indicated by the position information included in the potential accident information. The warning is notified to the user by the screen display, the light emission, and the voice by the notification unit such as the screen display of the display 104, the light emission or blinking of the lamp 106, and the voice of the speaker 114. That is, the warning output unit 27 outputs a signal corresponding to each notification unit. For example, as shown in FIG. 9, on the display screen of the display 104, characters such as "300 m ahead, it is a hiyari hat point, please be careful when driving" and symbols such as "!" Are displayed, and the lamp 106 is emitted. Let me.

The flag recognition unit 28 recognizes the flag recorded on the memory card M, so that the potential accident recording unit 25 determines whether or not to record the potential accident. As shown in FIG. 1, a flag for distinguishing whether or not to record potential accident information is recorded on the memory card M. The flag referred to here is identification information for determining whether or not to record the potential accident information. Recognizing a flag means determining whether or not the flag is set. For example, if the flag is set to "1", the latent accident information is not recorded, but if the flag is set to "0", the latent accident information is recorded. However, it is up to you to assign which state of the flag to record or not to record. Further, the flag may be expressed in any form as long as it is information that can distinguish between recording and non-recording.

If the flag recognition unit 28 decides not to record the potential accident information, the potential accident recording unit 25 does not record the potential accident information. When the flag recognition unit 28 determines to record the potential accident information, the potential accident recording unit 25 records the potential accident information as described above.

The traveling state recording unit 29 records the traveling state of the vehicle in the memory of the control unit 120 and the memory card M. The traveling state of the vehicle is information acquired when the vehicle is traveling. For example, the recognition result by the voice recognition unit 23 and the image recognition unit 24, the acceleration sensor 110, the GPS receiver 111, the gyro sensor 117, the in-vehicle CAN signal port 118, the measured value acquired by the wearable device, and the like are recorded. The traveling state recording unit 29 selectively records all of this information or preset information.

(Latent accident recording device)
As shown in FIG. 1, the potential accident recording device 200 includes an input device 210, a display device 220, a card reader 230, and a control device 240. The input device 210 is a device for inputting various information necessary for the potential accident recording device 200. The input device 210 includes a touch panel, a keyboard, and a mouse. The display device 220 is an output device that displays various information necessary for the potential accident recording device 200. The touch panel includes a touch panel configured on the display device 220.

The card reader 230 is a device to which the memory card M is mounted and which inputs / outputs information to / from the memory card M. The card reader 230 is a reading unit that reads video data, latent accident information, identification information, flags, and running state from the memory card M, and writes video data, latent accident information, identification information, flags, and running state to the memory card M. Functions as a department. For example, the card reader 230 writes the potential accident information of the memory card M of the drive recorder 100 of a certain vehicle into the memory card M of the drive recorder 100 of another vehicle. In other words, the potential accident information of drivers of different vehicles can be used mutually.

The control device 240 is a computer that is mainly composed of a processor that is a central processing unit and is provided with a recording medium such as a ROM, a RAM, a hard disk, an SSD, an input / output interface, and the like. Functions as a processing unit. The present invention can also be grasped as a program as described above and a computer-readable recording medium on which such a program is recorded. In the following description, a block diagram showing the functions of each processing unit in blocks will be used.

As shown in FIG. 10, the control device 240 includes a communication unit 40, a video recording unit 41, a potential accident recording unit 42, a running state recording unit 43, an evaluation unit 44, and a flagging unit 45. The communication unit 40 transmits / receives information to / from each drive recorder 100 via the network N. The video recording unit 41 creates a database of video data recorded on the memory card M read from the card reader 230 on a recording medium such as a hard disk or SSD and records the data.

The latent accident recording unit 42 records the latent accident information recorded on the memory card M read by the card reader 230 as a database on a recording medium such as a hard disk or SSD. The database includes identification information and flags assigned to each memory card M or each potential accident information. Since the flag is set, the latent accident information is not read from the memory card M in which the latent accident information is not recorded. Further, the traveling state recording unit 43 records the traveling state recorded on the memory card M in a database on a recording medium such as a hard disk or SSD.

The evaluation unit 44 evaluates the running state of the vehicle. The evaluation of the driving state was acquired by the frequency of latent accident information, the recognition result by the voice recognition unit 23 and the image recognition unit 24, the acceleration sensor 110, the GPS receiver 111, the gyro sensor 117, the in-vehicle CAN signal port 118, and the wearable device. It can be performed based on the measured value or the like. The evaluation is performed by giving points which are numerical values according to the quality of the running condition. For example, if the number of potential accident information within a predetermined period exceeds the threshold value, the point is lowered, and if it is below the threshold value, the point is raised. When the number of sudden braking within a predetermined period exceeds the threshold value, the point is lowered, and when it is below the threshold value, the point is raised. In addition, the point is increased when the speed is lower than the threshold value, and the point is decreased when the speed exceeding the threshold value is high. If the difference between the speed limit and the actual speed is less than or equal to the threshold value, the point is increased, and if it exceeds the threshold value, the point is decreased. By performing such evaluation by the evaluation unit 44 in units of memory cards M of the drive recorder 100, it is possible to distinguish whether or not the driver is excellent. For example, when the points are high, it can be distinguished as excellent, and when the points are low, it can be distinguished as not good.

The flag giving unit 45 gives a flag to the memory card M. The flag is given by the flag giving unit 45 according to the traveling state of the vehicle. According to the traveling state of the vehicle, the evaluation of the evaluation unit 44 is followed. For example, if the value of the point evaluated by the evaluation unit 44 is lower than the threshold value, a flag is set, and if it is equal to or higher than the threshold value, the flag is dropped. It should be noted that, in the initial state, the flag of each memory card M is set to be flagged according to the running state of the vehicle, and the flag is given according to the running state of each driver driving within a predetermined period. It can also be done so that the unit 45 gives a flag. That is, the flag can be added when the traveling state is accumulated to some extent and the evaluation unit 44 is evaluated. When the flag is set, a state in which the subsequent potential accident information is not recorded occurs, but even in such a case, the evaluation unit 44 evaluates from the running state other than the potential accident information and responds to the evaluation. The flag-giving unit 45 can also drop the flag.

Further, the flag giving unit 45 can also give a flag according to the input from the input device 210 of the operator OP. For example, when the operator OP determines from the running state of the vehicle that the potential accident information of a specific vehicle or driver should not be used by another driver, the input device 210 is operated to set a flag. If it is determined that it should be used by another driver, the input device 210 is operated to drop the flag. For example, the operator OP can make a judgment similar to the evaluation by the evaluation unit 44 as described above to determine the addition of the flag. When the operator OP makes a judgment, the evaluation unit 44 can make a judgment that is difficult to evaluate by looking at the video data displayed on the display device 220. For example, even a driver who steps on a sudden brake less often can make a judgment such as lowering the evaluation and setting a flag when the driver speeds up at a yellow traffic light and is stuck at an intersection.

[motion]
The processing procedure of the present embodiment as described above will be described with reference to the flowcharts of FIGS. 11 and 12 in addition to the above drawings.
(Granting a flag)
The procedure for assigning a flag by the potential accident recording device 200 will be described. As shown in FIG. 11, first, the driver of each vehicle takes out the memory card M from the drive recorder 100 and hands it to the operator OP after finishing the driving. The operator OP inserts the memory card M into the card reader 230 so that the information can be read and written (step 101).

The operator OP operates the input device 210 to read the video data, the potential accident information, the identification information, and the running state recorded in each memory card M, and records them in a database on the recording medium of the potential accident recording device 200. (Step 102).

The evaluation unit 44 evaluates the running state of each vehicle (step 103). For example, points that are numerical values according to the quality of the running state are given. When the evaluation point is larger than the threshold value (YES in step 104), the flag-giving unit 45 drops the flag (step 105). If the evaluation point is below the threshold value (NO in step 104), a flag is set (step 106).

As described above, the operator OP may determine whether or not the potential accident information of each driver is worthy of being used by another driver. That is, when the operator OP evaluates and determines that the potential accident information should not be read, the input device 210 is operated to set a flag. If it is determined that reading should be performed, the input device 210 is operated to drop the flag.

(Collection and notification of potential accident information)
Next, the procedure for collecting and notifying potential accident information by the drive recorder 100 will be described. As shown in FIG. 12, the drive recorder 100 is turned on when the engine is started (step 201), and the video recording unit 21 starts recording video data on the memory card M (step 202). The video recording unit 21 continues recording video data, and the detection unit 22 waits for the occurrence of a potential accident (NO in step 203).

When the detection unit 22 detects a potential accident (YES in step 203), the flag recognition unit 28 recognizes whether or not the flag is set (step 204). If the flag is set (YES in step 204), the potential accident recording unit 25 does not record the potential accident (step 205). If the flag is not set (NO in step 204), the potential accident recording unit 25 records the potential accident on the memory card M separately from the video data (step 206).

When the latent accident information is recorded, the position determination unit 26 indicates that the current position detected by the GPS receiver 111 approaches the position indicated by the position information included in the latent accident information while the vehicle is traveling. (YES in step 207), the warning output unit 27 outputs a warning, so that the warning is displayed on the display 104 or the like (step 208). If the current position does not approach the position of the potential accident information or if the potential accident information is not recorded (NO in step 207), no warning is given. The above processing is performed until the engine is stopped (NO in step 209). When the engine is stopped and the power is turned on (YES in step 209), the recording of video data is stopped (step 210).

[Action effect]
(1) The drive recorder 100 of the present embodiment includes a camera 103 installed in a vehicle, a memory card accommodating unit 108, a video recording unit 21 that records video data captured by the camera 103 on the memory card M, and a latent unit. Information that distinguishes the video data before and after the occurrence of the potential accident from the video data recorded by the video recording unit when the detection unit 22 detects the occurrence of the accident and the detection unit 22 detects the occurrence of the potential accident. The memory card M has a latent accident recording unit 25 that records latent accident information including location information on the memory card M, and the memory card M has a flag for distinguishing whether or not the latent accident information is shared. By recording and recognizing the flag, the potential accident recording unit 25 has a flag recognition unit 28 that determines whether or not to share the potential accident.

Therefore, the flag recorded in the memory card M of each drive recorder 100 can be set so that the latent accident information is not recorded. Therefore, when a plurality of drivers share the latent accident information via the memory card M, unnecessary latent accident information can be eliminated in advance. Therefore, it is not necessary to be bothered by latent accident information that is unnecessary for other drivers, and the capacity of the storage medium can be saved. Since it is possible to determine whether or not the potential accident information is recorded by the flag, a difficult determination process becomes unnecessary, and the processing load of the drive recorder 100 can be reduced.

(2) It has an input unit for instructing and inputting the occurrence of a potential accident. Therefore, the latent accident information determined to be necessary by each driver can be included in the latent accident information used by other drivers. Therefore, it is possible to record potential accident information that does not appear in the traveling state of the vehicle. It should be noted that such instruction input can be valid only when the potential accident information is to be recorded because the flag is set, and regardless of whether the flag is set or set. Instead, it is possible to give priority to the instruction input by the input unit and set to record the potential accident information.

(3) It has an input unit for instructing and inputting the deletion of potential accident information. Therefore, it is possible to exclude the latent accident information that each driver clearly determines to be unnecessary from the latent accident information used by the other driver, and prevent the other driver from being warned.

(4) Among the signals from the acceleration sensor 110, the detection unit 22 evaluates the acceleration in the vertical axis direction to be lower than the acceleration in the other axial directions, and detects the occurrence of a potential accident. Therefore, it is possible to prevent unnecessary potential accident information from being recognized as a potential accident by simply traveling on a step or a hole in the road.

(5) The latent accident recording device 200 of the present embodiment sets a flag for distinguishing whether or not the latent accident information is shared on the memory card M which is captured by the camera 103 of the drive recorder 100 and records the video data. It has a flag giving unit 45 to be given.

Therefore, at the discretion of the operator OP, the memory card M of the driver's drive recorder 100, which is considered to be able to obtain only unnecessary potential accident information by comparing each driver, is flagged so as not to record the potential accident information. A flag can be dropped on the memory card M of the driver's drive recorder 100 from which useful potential accident information can be obtained in order to record the potential accident information.

(6) It has an evaluation unit 44 for evaluating the running state of the vehicle, and the flag giving unit 45 gives a flag to the memory card M according to the evaluation of the evaluation unit 44. Therefore, the memory card M of the driver's drive recorder 100, which evaluates each driver without the operator OP's judgment and can obtain only unnecessary latent accident information, does not record the latent accident information and is useful latent. The memory card M of the driver's drive recorder 100 from which the accident information can be obtained can record the potential accident information.

[Second Embodiment]
[Constitution]
A second embodiment of the present invention will be described with reference to the drawings. The same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. In the present embodiment, as shown in FIG. 13, the control unit 120 of the drive recorder 100 has an evaluation unit 31 and a flag addition unit 32.

The evaluation unit 31 evaluates the running state of the vehicle in the same manner as the evaluation unit 44 of the first embodiment. The flag-giving unit 32 gives a flag to the memory card M in the same manner as the flag-giving unit 45 of the first embodiment. For example, if the evaluation point of the evaluation unit 31 with respect to the running state of the own vehicle is lower than the threshold value, a flag is set, and if the point is equal to or higher than the threshold value, the flag is dropped. The flag-giving unit 32 can also add a flag in response to an input from the driver's input unit.

[Action effect]
In the present embodiment, the flag giving unit 32 that gives a flag according to the information indicating the running state of the vehicle equipped with the drive recorder 100 is provided. Therefore, if the evaluation of one's own driving condition is low, it is not used as potential accident information of another driver.

[Third Embodiment]
[Constitution]
A third embodiment of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the first and second embodiments, and the description thereof will be omitted. In the present embodiment, the memory card M is weighted for each memory card M or for each potential accident information. Weighting is done numerically. For example, the larger the numerical value, the higher the weighting, and the smaller the numerical value, the lower the weighting.

As shown in FIG. 14, the control unit 120 of the drive recorder 100 has a weighting recognition unit 33 that determines whether or not the warning output unit 27 outputs a warning according to the weighting. Recognizing weighting means determining the magnitude of the weighting value by comparing it with the threshold value. When the weighting is equal to or less than the threshold value, the weighting recognition unit 33 determines that the warning is not output. When the weighting is larger than the threshold value, the weighting recognition unit 33 determines to output a warning.

As shown in FIG. 15, the control device 240 of the potential accident recording device 200 has a weighting unit 52. The weighting unit 52 weights each memory card M or each potential accident information. Weighting is given according to the running state of the vehicle. For example, in the case of latent accident information having the same position and the same content, the weighting is lightened as the number of times is small, and the weighting is increased as the number of times is large. Weighting should be increased for sudden braking performed by a driver whose frequency of sudden braking is below the threshold value.

Further, the weighting unit 52 may be weighted based on the evaluation of the evaluation unit 44. For example, the evaluation points of the evaluation unit 44 may be used as they are as weighting values. Further, when the evaluation point of the evaluation unit 44 with respect to the running state of the own vehicle is lower than the threshold value, the weighting value is decremented, and when the point is equal to or higher than the threshold value, the weighting value is incremented. You may.

The weighting unit 52 can also add weighting according to the input from the input device 210 of the operator OP. For example, when the operator OP determines that the latent accident information of a specific vehicle or driver should not be output as a warning from the traveling state of the vehicle or the like, the input device 210 is operated to lower the weighting. When it is determined that it should be used by another driver, the input device 210 is operated to increase the weighting.

For example, weighting the potential accident information around the school in the morning and evening should be increased in consideration of the time zone, time, and area. Weighting will also be increased for potential accident information at points that freeze in winter. Such points may be registered as potential accident information by default.

[motion]
The procedure for processing the warning according to the weighting of the present embodiment as described above will be described with reference to the flowchart of FIG. Since the processing procedures of steps 301 to 306 and steps 310 and 311 are the same as those of steps 201 to 206 and steps 209 and 210 of the flowchart of FIG. 12, the description thereof will be omitted.

That is, when the position determination unit 26 determines that the current position detected by the GPS receiver 111 approaches the position indicated by the position information included in the potential accident information while the vehicle is traveling (YES in step 307). , The weighting recognition unit 33 recognizes the weighting value (step 308). When the weighting is equal to or less than the threshold value (YES in step 308), the weighting recognition unit 33 determines that the warning is not output, so that the warning output unit 27 does not output the warning. When the weighting is larger than the threshold value (NO in step 308), the weighting recognition unit 33 determines to output a warning, so that the warning output unit 27 outputs a warning (step 309).

[Action effect]
In the present embodiment, no warning is output for the latent accident information having a low weighting value, so that the driver is not bothered by unnecessary warnings. Further, by using the evaluation of the evaluation unit 44, unnecessary warnings can be eliminated even if the operator OP does not make a judgment. In the present embodiment, the control unit 120 has the flag recognition unit 28 and the control device 240 has the flag application unit 45, but the flag recognition unit 28 and the flag application unit 45 may not be provided.

[Fourth Embodiment]
[Constitution]
A fourth embodiment of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the second and third embodiments, and the description thereof will be omitted. In this embodiment, as shown in FIG. 17, the control unit 120 of the drive recorder 100 has a weighting unit 34. The weighting unit 34 is the same as the weighting unit 52 of the third embodiment. That is, in the present embodiment, the drive recorder 100 can perform weighting for each potential accident information.

[Action effect]
In the present embodiment, since the weighting unit 34 weights each latent accident information in the same drive recorder 100, the collected latent accident information is sorted into useful and unnecessary ones, and a useful warning is issued. Can receive. In the present embodiment, the control unit 120 may or may not have the flag recognition unit 28 and the control device 240 may or may not have the flag addition unit 45.

[Fifth Embodiment]
[Constitution]
A fifth embodiment of the present invention will be described. This embodiment is basically the same as the first embodiment. In the present embodiment, the control unit 120 of the drive recorder 100 does not have the flag recognition unit 28. Further, in the present embodiment, the flag giving unit 45 gives a flag to the memory card M as in the first embodiment. However, the flag of the present embodiment is identification information for determining whether or not to read the potential accident information. This flag may be called a read flag. Further, as in the first embodiment, the flag giving unit 45 can also give a flag in response to the input from the input device 210 of the operator OP.

[Action effect]
In the present embodiment as described above, the card reader 230, which is a reading unit, reads the latent accident information when the flag assigned to the memory card M is set, and is latent when the flag is set. Do not read accident information. Therefore, it is possible to eliminate the creation of a database of unnecessary potential accident information.

[Sixth Embodiment]
[Constitution]
A sixth embodiment of the present invention will be described. This embodiment is basically the same as the first embodiment. In the present embodiment, the control unit 120 of the drive recorder 100 does not have the flag recognition unit 28. Further, in the present embodiment, the flag giving unit 45 gives a flag to the memory card M as in the first embodiment. However, the flag of this embodiment is identification information for determining whether or not to write the latent accident information of a certain drive recorder 100 to the memory card M of another drive recorder 100. This flag may be called a write flag. Further, as in the first embodiment, the flag giving unit 45 can also give a flag in response to the input from the input device 210 of the operator OP.

[Action effect]
In the present embodiment as described above, when the flag assigned to the memory card M is set, the card reader 230, which is the writing unit, writes other potential accident information to the other memory card M and flags it. If is standing, do not write potential accident information. Therefore, in the latent accident recording device 200, while collecting a large amount of latent accident information, unnecessary latent accident information is not written in the memory card M of the drive recorder 100, so that the memory card M of each drive recorder 100 You can save storage capacity.

[7th Embodiment]
[Constitution]
A seventh embodiment of the present invention will be described. This embodiment is a potential accident recording system S having basically the same configuration as that of the first embodiment. However, in the present embodiment, the control unit 120 of the drive recorder 100 does not have the flag recognition unit 28. Further, in the present embodiment, the flag giving unit 45 gives a flag to the memory card M as in the first embodiment. The flag of the present embodiment is identification information for transmitting potential accident information to the drive recorder 100 and determining whether or not to read it. This flag may be called a read flag. Further, in the present embodiment, the communication unit 40 receives the potential accident information transmitted from each drive recorder 100. The latent accident recording unit 42 records the latent accident information received from each drive recorder 100 in a database on a recording medium.

Similar to the first embodiment, the evaluation unit 44 evaluates the traveling state of the vehicle, and the flag giving unit 45 gives a flag to the potential accident information according to each drive recorder 100. The flag is given according to the running state of the vehicle. As in the first embodiment, the flag giving unit 45 can also give a flag in response to the input from the input device 210 of the operator OP.

The communication unit 40 transmits the received potential accident information to each drive recorder 100. In the drive recorder 100 that receives this, the potential accident recording unit 25 records it on the memory card M and uses it for the warning by the warning output unit 27 in the same manner as described above. However, the potential accident information of the memory card M for which the flag is set is not transmitted to the drive recorder 100.

[Action effect]
In the present embodiment, since the potential accident information can be acquired via the network N, an accurate warning based on the latest information can be realized. Then, since the latent accident information necessary for each driver can be obtained and unnecessary latent accident information is eliminated, the communication amount and the storage capacity can be suppressed.

[8th Embodiment]
[Constitution]
An eighth embodiment of the present invention will be described. This embodiment is a potential accident recording system S having basically the same configuration as that of the third embodiment. However, in the present embodiment, the communication unit 40 receives the potential accident information transmitted from the drive recorder 100. The latent accident recording unit 42 records the latent accident information received from the drive recorder 100 in a database on a recording medium.

Similar to the third embodiment, the weighting unit 52 weights each memory card M or each potential accident information. The weighting unit 52 may be weighted based on the evaluation of the evaluation unit 44. The weighting unit 52 can also add weighting according to the input from the input device 210 of the operator OP.

The communication unit 40 transmits the received potential accident information to each drive recorder 100. In the drive recorder 100 that receives this, the potential accident recording unit 25 records it on the memory card M and uses it for the warning by the warning output unit 27 in the same manner as described above. However, the potential accident information whose weighting value is lower than the threshold value is not transmitted to the drive recorder 100.

[Action effect]
In the present embodiment, the latent accident information necessary for each driver can be obtained, and unnecessary latent accident information is eliminated, so that the communication amount and the storage capacity can be suppressed. In this embodiment, the control unit 120 of the drive recorder 100 may or may not have the flag recognition unit 28.

[Other Embodiments]
The present invention is not limited to the above embodiments, but also includes other embodiments shown below. The present invention also includes a combination of all or any of the above embodiments and the following other embodiments. Furthermore, various omissions, replacements, and changes can be made to these embodiments without departing from the scope of the invention, and modifications thereof are also included in the present invention.

(1) The time length of the video data of the potential accident recorded by the potential accident recording unit 25 may differ depending on the traveling state of the vehicle. As shown in FIG. 18, the latent accident recording unit 25 has a short-time mode 25a, a long-time mode 25b, and a mode switching unit 25c. The short-time mode 25a is a mode in which the time for recording as video data before the occurrence of a potential accident is short. In the example shown in FIG. 8, if a potential accident occurs at a time point (tb) 20 seconds before the file start time (t0), a video with a period of t0-60 seconds to tb + 20 seconds is created as one file. Record. In the long-time mode 25b, as in the example shown in FIG. 8, in the first embodiment described above, a video in a period of t0-120 seconds to tb + 20 seconds is created and recorded as one file.

The mode switching unit 25c switches between the short-time mode 25a and the long-time mode 25b according to the traveling state of the vehicle. For example, when a normal latent accident occurs, it is recorded in the short-time mode 25a, and when the value of the acceleration sensor 110 exceeds the threshold value due to a very strong impact, the mode switching unit 25c is set to the long-time mode 25b. Switch and record. As a result, only in the case of potential accident information having a high degree of risk, the long-time mode 25b can be used for investigating the cause, and the short-time mode 25a can be used to save the storage capacity at normal times. This aspect may be the drive recorder 100 to which one or both of the flag and the weighting are not given.

(2) The drive recorder 100 is provided with a camera that images the rear side, that is, the inside of the vehicle, and the detection unit 22 causes a potential accident based on the information recognized by the image recognition unit 24 from the video data captured by this camera. May be detected. For example, when the image recognition unit 24 recognizes the driver and the movement speed, movement amount, movement mode, etc. of the driver exceeds the threshold value, it is detected as a potential accident. As a result, wobbling, deviation from the camera's field of view, dozing, etc. can be detected as potential accidents.

(3) The video recording and the potential accident recording can be set to the parking mode in which the power is continuously supplied from the power source and the recording is continued even if the engine is stopped. That is, the video recording refers to a state in which video data is continuously recorded for a continuous time, and is not limited to the time when the engine is running or the time when the engine is running.

(4) When the user closes the lens of the front camera 103 or the rear camera by hand and the image recognition unit 24 recognizes the darkening, the function equivalent to the instruction input can be exhibited. That is, the camera can be used as an input unit. Therefore, when the lens of the camera is blocked by hand, the latent accident may be detected or the latent accident may be erased.

(5) A drive recorder 100, in which a flag is not recorded on the recording medium and does not have a flag recognition unit, but is weighted for each potential accident information, can also be configured. In this case, the weighting unit may be in the drive recorder 100 or in the potential accident recording device 200.

(6) In the drive recorder 100 or the potential accident recording device 200, in order to erase the potential accident information, an authentication unit that requires authentication by a password may be provided. In that case, the erasable potential accident information may be distinguished according to the flag or weighting. For example, only the flagged latent accident information and the latent accident information whose weighting is lower than the threshold value may be deleted.

(7) The storage area for video data and potential accident information of the drive recorder 100 is not limited to a removable recording medium such as a memory card M, but is built in the main body 101 and various types of reading and writing are controlled by the control unit 120. It may be a memory. For example, it may be an SSD or a hard disk. That is, one aspect of the present invention is an aspect having a recording medium accommodating portion, an embodiment having a recording medium accommodated in the recording medium accommodating portion, or an embodiment having a recording medium provided in place of the recording medium accommodating portion. ..

(8) Not only potential accidents but also information on actual accidents may be included in the recorded, warning, and shared information. However, it can be said that the present invention is suitable for application to potential accidents because the number of potential accidents is larger than the information of actual accidents and the potential accidents are more difficult to share.

The potential accident recording device as shown below is also an aspect of the present invention. A latent accident recording system having the above-mentioned drive recorder and the following latent accident recording device connected via a network is also an aspect of the present invention.

(Claim 1)
A flag-imparting unit that assigns a flag to the recording medium on which the video data captured by the camera of the drive recorder is recorded to distinguish whether or not to share the video data before and after the occurrence of the potential accident and the potential accident information including the position information. A potential accident recording device characterized by having.

(Claim 2)
A reading unit that reads the latent accident information from a recording medium that records the video data captured by the camera of the drive recorder, the video data before and after the occurrence of the latent accident, and the latent accident information including the position information, and the recording medium. A latent accident recording device comprising: a flag giving unit for imparting a flag for distinguishing whether or not to read the latent accident information.

(Claim 3)
A document for writing the latent accident information of another drive recorder's recording medium on a recording medium that records the video data captured by the camera of the drive recorder and the latent accident information including the video data and position information before and after the occurrence of the latent accident. Incorporation and
A flag-imparting unit that adds a flag to the potential accident information to distinguish whether or not to write to the recording medium of another drive recorder.
A potential accident recording device characterized by having.

(Claim 4)
It has an evaluation unit that evaluates the running condition of the vehicle.
The potential accident recording device according to any one of claims 1 to 3, wherein the flag-imparting unit imparts the flag according to the evaluation of the evaluation unit.

(Claim 5)
The latent accident recording device according to any one of claims 1 to 3, further comprising a weighting unit that assigns a weight to each recording medium or each latent accident information.

(Claim 6)
It has an evaluation unit that evaluates the running condition of the vehicle.
The potential accident recording device according to claim 5, wherein the weighting unit gives the weighting according to the evaluation of the evaluation unit.

(Claim 7)
The communication unit connected to the camera of the drive recorder mounted on the vehicle via the network,
A latent accident recording unit that records latent accident information including video data and position information before and after the occurrence of a latent accident received from the drive recorder by the communication unit on the recording medium.
A flag-giving unit that adds a flag to the potential accident information to distinguish whether or not to send it to each drive recorder.
A potential accident recording device characterized by having.

(Claim 8)
It has an evaluation unit that evaluates the running condition of the vehicle.
The potential accident recording device according to claim 7, wherein the flag-imparting unit imparts the flag according to the evaluation of the evaluation unit.

(Claim 9)
The potential accident recording device according to claim 7 or 8, further comprising a weighting unit that weights the potential accident information according to the traveling state of the vehicle.

100 Drive recorder 101 Main unit 102 Bracket 103 Camera 104 Display 105 Button 106 Lamp 107 Audio output port 108 Memory card storage unit 109 Audio input port 110 Acceleration sensor 111 GPS receiver 112 Clock 113 Temporary memory 114 Speaker 115 Microphone 116 Memory card interface 117 Gyro Sensor 118 In-vehicle CAN signal port 119 Communication unit 120 Control unit 200 Potential accident recording device 21 Video recording unit 22 Detection unit 23 Voice recognition unit 24 Image recognition unit 25 Potential accident recording unit 25a Short-time mode 25b Long-time mode 25c Mode switching unit 26 Position determination unit 27 Warning output unit 28 Flag recognition unit 29 Running state recording unit 31 Evaluation unit 32 Flagging unit 33 Weighted recognition unit 34 Weighting unit 240 Control device 40 Communication unit 41 Video recording unit 42 Potential accident recording unit 43 Driving condition recording Unit 44 Evaluation unit 45 Flagging unit 52 Weighting unit FG Front glass M Memory card S Potential accident recording system L Power cable N Network T Information communication terminal

Claims (7)

A reading unit that reads potential accident information including video data and position information before and after the occurrence of a potential accident from a recording medium that records video data captured by the camera of the drive recorder.
A writing unit for writing the potential accident information on the recording medium,
A flag-imparting unit that assigns a flag for distinguishing whether or not the potential accident information is shared for each recording medium, and a flag-imparting unit.
A potential accident recording device characterized by having. The latent accident recording device according to claim 1, wherein the flag is a flag for distinguishing whether or not to read the latent accident information for each recording medium. The latent accident recording device according to claim 1 or 2, wherein the flag is a flag for distinguishing whether or not to write the latent accident information for each recording medium of another drive recorder. A communication unit that sends and receives information to and from the drive recorder via a network,
Depending on each drive recorder, the communication unit sets a flag for distinguishing whether or not to transmit to each drive recorder in the latent accident information including video data and position information before and after the occurrence of the latent accident received from the drive recorder. And the flag-giving part
A potential accident recording device characterized by having. 7. Latent accident recording device. The potential accident recording device according to claim 5, which has an evaluation unit for evaluating the running state. Has an input device for inputting information
The potential accident information recording device according to any one of claims 1 to 6, wherein the flag giving unit gives the flag in response to an input from the input device.

Images