JP2019139333A - Drive recorder and potential accident recording device - Google Patents

Abstract

To provide a drive recorder and a potential accident recording device allowing multiple drivers to share necessary potential accident information.SOLUTION: A drive recorder includes: a camera installed in a vehicle; a memory card accommodating part for accommodating a memory card; a video recording part 21 for recording video data captured by the camera on the memory card; a detection part 22 for detecting the occurrence of a potential accident; a potential accident recording part 25 for recording in the memory card potential accident information including information taking the video data before and after the occurrence of a potential accident apart from the video data recorded by the video recording part, as well as position information when the detection part 22 detects the occurrence of the potential accident; and a flag recognition part 28 for the potential accident recording part 25 to determine whether or not to share the potential accident by recognizing a flag that is recorded in the memory card so as to distinguish whether or not to share the potential accident information.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a drive recorder and a potential accident recording apparatus for recording potential accident information.

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

  Such a drive recorder is equipped with a GPS so that the position where the vehicle is traveling can be detected. And there exists a drive recorder having a notification function for reporting a near-miss by using GPS. A near-miss refers to a situation that did not lead to an accident but could have caused an accident.

  In order to activate the near-miss notification function in the drive recorder, it is necessary to record the near-miss and its position information on a recording medium in advance. When the position of the vehicle detected by the GPS approaches or reaches a previously recorded position, information indicating a warning is notified by screen display or audio output.

International Publication No. 2008/010392

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

  However, there are various kinds of near-miss information acquired from a plurality of vehicles, and the number thereof is enormous. For this reason, even if the information is necessary for a certain driver, there is information unnecessary for another driver. There is also information that is not appropriate as a near-miss.

  If all of this information is included and recorded in the drive recorder of all vehicles as a near-miss, warnings are frequently reported and are troublesome for each driver. Further, since the storage capacity of the storage medium of the drive recorder is small, it is desirable to avoid the use of the storage area due to unnecessary near-miss information.

  The present invention has been proposed in order to solve the above-described problems of the prior art, and an object of the present invention is to provide a drive recorder and a potential accident recording apparatus that allow a plurality of drivers to share necessary potential accident information. It is to provide.

  In order to achieve the above object, a drive recorder according to the present invention includes a camera installed in a vehicle, a recording medium storage unit that stores a recording medium, and a video that records video data captured by the camera on the recording medium. A recording unit, a detection unit that detects the occurrence of a potential accident, and the video data recorded by the video recording unit before and after the occurrence of a potential accident when the detection unit detects the occurrence of a potential accident A potential accident recording unit for recording the potential accident information including the distinguished information and the position information, and a flag for distinguishing whether or not the potential accident information is shared is recorded on the recording medium The potential accident recording unit has a flag recognition unit that determines whether or not the potential accident information is shared by recognizing the flag.

  You may have the recording medium accommodated in the said recording medium accommodating part, or the said recording medium provided instead of the said recording medium accommodating part. The drive recorder may have an input unit for inputting an instruction for the occurrence of a potential accident. You may have the input part which instruct | indicates and inputs the deletion of the latent accident information.

  The detection unit may detect the occurrence of a potential accident by evaluating the acceleration in the vertical axis direction relative to the acceleration in the other axial direction among signals from the acceleration sensor.

  Depending on the running state of the vehicle, the time length of the video data of the potential accident recorded by the potential accident recording unit may be different.

  The drive recorder may include an evaluation unit that evaluates a traveling state of a vehicle, and a flag applying unit that applies the flag to the recording medium according to the evaluation of the evaluation unit.

  The drive recorder detects a current position of the vehicle, and determines that the current position of the vehicle detected by the position detection unit has approached a position indicated by the position information included in the potential accident information. And a warning output unit that outputs a warning when it is determined by the position determination unit and the position determination unit that the position information indicated by the position information included in the potential accident information has approached. A weighting recognition unit may be provided that assigns a weight to each recording medium or each potential accident information and determines whether the warning output unit outputs a warning according to the weighting.

  The drive recorder may include an evaluation unit that evaluates a traveling state of the vehicle, and a weighting unit that assigns the weighting to each potential accident information according to the evaluation of the evaluation unit.

  The potential accident recording apparatus of the present invention distinguishes whether or not potential accident information including video data and position information before and after the occurrence of a potential accident is shared on a recording medium that records video data captured by a camera of a drive recorder. There may be provided a flag assigning unit for assigning a flag.

  A latent accident recording device comprises: a reading unit that reads the potential accident information from a recording medium that records video data captured by the camera of the drive recorder and video data and potential accident information including position information before and after the occurrence of the potential accident; The recording medium may include a flag assigning unit that assigns a flag for distinguishing whether or not to read the potential accident information.

  The latent accident recording device records the video data captured by the camera of the drive recorder and the potential accident information including the video data and the position information before and after the occurrence of the potential accident on the recording medium of the other drive recorder. You may have a writing part which writes potential accident information, and a flag provision part which provides the flag for distinguishing whether to write in the recording medium of another drive recorder to the said potential accident information.

  The latent accident recording apparatus may include an evaluation unit that evaluates a traveling state of the vehicle, and the flag assigning unit may assign the flag according to the evaluation of the evaluation unit.

  The latent accident recording apparatus may include a weighting unit that assigns a weight to each recording medium or each latent accident information.

  The latent accident recording apparatus may include an evaluation unit that evaluates a traveling state of the vehicle, and the weighting unit may assign the weight according to the evaluation of the evaluation unit.

  The latent accident recording device includes a communication unit connected to a camera of a drive recorder mounted on a vehicle via a network, and video data and position information before and after the occurrence of a potential accident received by the communication unit from the drive recorder. A potential accident recording unit for recording the potential accident information on the recording medium; and a flag adding unit for adding a flag for distinguishing whether or not to transmit the potential accident information to each drive recorder.

  The latent accident recording apparatus includes an evaluation unit that evaluates the traveling state of the vehicle, and the flag assigning unit assigns the flag according to the evaluation of the evaluation unit.

  The latent accident recording apparatus includes an evaluation unit that evaluates a traveling state of the vehicle having a weighting unit that assigns weight to the latent accident information according to the traveling state of the vehicle, and the flag providing unit is configured to evaluate the evaluation unit. Depending on, the flag may be given.

  You may have a weighting part which gives weighting to latent accident information according to the driving | running | working state of a vehicle.

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

It is a whole lineblock diagram showing the potential accident recording system of a 1st embodiment. It is a front side perspective view which shows the drive recorder of 1st Embodiment. It is a back side perspective view showing the drive recorder of a 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 example of installation of the drive recorder of 1st Embodiment. It is a hardware block diagram of the drive recorder of a 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 latent accident information. It is a functional block diagram of the control apparatus of the potential accident recording apparatus of 1st Embodiment. It is a flowchart which shows the procedure of flag provision of 1st Embodiment. It is a flowchart which shows the procedure of collection and alerting | reporting of the potential accident information of 1st Embodiment. It is a functional block diagram of the control part of the drive recorder of 2nd Embodiment. It is a functional block diagram of the control part of the drive recorder of 3rd Embodiment. It is a functional block diagram of the control apparatus of the potential accident recording apparatus of 3rd Embodiment. It is a flowchart which shows the procedure of the weighting 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 potential accident memory | storage part of other 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 potential accident recording system in which potential accident information collected by a drive recorder installed in a certain vehicle can be used in a drive recorder installed in another vehicle, that is, shared. A potential accident is a situation in which an accident could occur, although it did not result in an accident. So-called near-misses and near misses 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 images the outside of the vehicles C1, C2, C3... (Hereinafter referred to as “C” when vehicles are 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 such as transportation companies and taxi companies. In the memory card M, identification information for identifying the driver or the vehicle C is recorded. Furthermore, a flag for distinguishing whether or not to share potential accident information is recorded in the memory card M. Sharing potential accident information means recording potential accident information, reading recorded potential accident information, sending recorded potential accident information, writing recorded potential accident information to other recording media Including at least one of the following. Not sharing potential accident information means not recording potential accident information, not reading recorded potential accident information, not transmitting recorded potential accident information, recording recorded potential accident information to other recording media Includes at least one of not writing. The flag of this embodiment is a flag for distinguishing whether or not potential accident information is recorded. The memory card M only needs to be a removable recording medium, and various media such as an SD card and a micro SD card can be used.

  The latent accident recording device 200 is a device that reads information recorded in the memory card M of each drive recorder 100, records it in a database, and records it. The latent accident recording device 200 is configured by a computer such as a PC, a server, a tablet, or a smartphone. The latent accident recording device 200 is used by a main body that manages all or part of the latent accident recording system S. For example, potential accident information of each drive recorder 100 is collected in the potential accident recording device 200, and based on this, an operator OP of an organization that provides services such as a transportation company, a taxi company, etc. supports safe driving of each driver. To 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), Bluetooth (registered trademark), USB, or the like via an information communication terminal T such as a smartphone or a wearable device. Note that the information communication terminal T such as a smartphone or a wearable device can also be used as an information input device to the drive recorder 100. The latent 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 is a front perspective view, FIG. 3 is a rear perspective view, FIG. 4 is a bottom perspective view, and FIG. 5 is a perspective view showing an example of installation in a vehicle. In this specification, the z-axis direction shown in the drawing is “upper side” and the opposite direction is “lower side”. In describing the configuration of each member, “lower” is also referred to as “bottom”. The z-axis direction may be referred to as the vertical axis direction. Moreover, let the y-axis direction shown in FIG. 2 be a front side, and let the opposite side be a back side. The front side may be referred to as the front and the back side may be referred to as the rear. “Top”, “Bottom”, “Front side”, “Back side”, “Front”, “Rear” refer to the positional relationship of each component when the drive recorder 100 is installed in a normal manner (see FIG. 5).

  An external 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 accommodation unit 108, and an audio input port 109. .

  The main body 101 is a substantially rectangular parallelepiped housing. 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 portion of the main body 101, and the other end is attached to a predetermined position in the windshield FG of the vehicle via a double-sided tape or the like so that the lens of the camera 103 faces the front of the vehicle. (See FIG. 5). The drive recorder 100 is supplied with power from the vehicle by being connected to the cigarette 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 provided on the back side of the main body 101 and displaying various kinds of information. The display 104 may be configured integrally with the touch panel. The button 105 is a switch for performing various instruction inputs by pressing. The lamp 106 is a member that displays various information by light emission. The audio output port 107 is an opening for outputting audio from a speaker 114 described later. As shown in FIG. 4, the memory card accommodating portion 108 is a slit-like slot provided in the lower portion of the main body 101, and the memory card M is inserted into and removed from the slot. The voice input port 109 is an opening for inputting voice to a microphone 115 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 housing unit 108, the drive recorder 100 includes an acceleration sensor 110, a GPS receiver 111, a clock 112, a temporary memory 113, a speaker 114, a microphone 115, A memory card interface 116 and a control unit 120 are included.

  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 a CMOS or a CCD. Since the camera 103 is installed as described above, it can capture an image in front of the vehicle. In addition, you may have a camera which images the image | video in a vehicle.

  The display 104 is an output device that displays moving images and still images. The display 104 displays information such as video 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 a video captured by the camera 103 in real time, or can reproduce a video recorded on the memory card M.

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

  The lamp 106 is an output device that informs the user of specific information by continuous light emission, light extinction, blinking, or the like. A light emitting LED is used as the lamp 106. The lamp 106 can indicate, for example, power on, warning, etc. by light emission. The memory card storage unit 108 is a recording medium storage unit that stores the memory card M. The memory card storage unit 108 establishes an electrical connection between the stored memory card M and the drive recorder 100.

  The acceleration sensor 110 is a sensor that detects acceleration of the drive recorder 100 and the installation target. The acceleration sensor 110 according to 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 on which the drive recorder 100 is mounted, the movement of the vehicle such as sudden acceleration and deceleration, and vibration during idling.

  The GPS receiver 111 is a position detection unit that receives radio waves from a GPS satellite and detects the current position of the vehicle based on the distance from the GPS satellite and the position of the GPS satellite. 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 electrical signal obtained by converting light received by the image sensor of the camera 103.

  The speaker 114 is an output device that notifies the user of specific information by voice. The microphone 115 is an input device that converts the sound in the vehicle on which the drive recorder 100 is mounted into an electric signal and inputs the electric signal. The sound includes a sound of nature, 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 a notification unit that notifies a warning when the vehicle on which the drive recorder 100 is mounted, 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 mainly includes a processor that is a central processing unit and includes various memories, an input / output interface, and the like. The processor performs arithmetic processing for information input, storage, output and the like and control processing of peripheral devices according to the main program.

  The memory includes an EEPROM and a RAM. The EEPROM is a writable non-volatile memory that stores programs, data, and settings for the processor to perform various processes for controlling each unit. The RAM is a memory that functions as a work area when the processor performs processing. The input / output interface converts information input / output by the processor to / 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 and the installation target. The in-vehicle CAN signal port 118 is a vehicle information acquisition unit that acquires various types of information for a self-diagnosis function of the ECU of the vehicle, such as OBD-II. The in-vehicle CAN signal port 118 is connected to an OBD-II connector of the vehicle via an adapter cable, for example. The vehicle information includes vehicle speed, accelerator opening, brake opening, blinker operation, and steering angle of the steering wheel. When the in-vehicle CAN signal port 118 is connected to the vehicle, power can be supplied without using the power cable L connected to the main body. The communication unit 119 is a processing unit that transmits and receives information to and from the outside. The communication unit 119 is connected to the network N by tethering using Wi-Fi (registered trademark), Bluetooth (registered trademark), USB, or the like via the information communication terminal T, and is connected to the potential accident recording apparatus 200. It is a communication module that transmits and receives information. As the communication unit 119, for example, a communication module that has a function of connecting to a base station according to a communication standard such as 3G or 4G and can be connected to the network N without using the information communication terminal T may be used. it can.

(Each processing unit of the control unit)
The control unit 120 functions as various processing units when the processor reads and executes various programs, data, and various settings stored in the memory. The present invention can also be understood as a program as described above and a computer-readable storage medium storing such a program. In the following description, a block diagram illustrating the function of each processing unit in blocks is used. The program, 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 and a running 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 refers to recording continuously for a predetermined time, and is also called constant recording. For example, recording is continuously performed from engine start to engine stop. That is, recording is continuously performed while power is supplied to the drive recorder 100. However, there is a case where the recording is temporarily interrupted and then resumed at the time of potential accident recording described later. Note that the video recording unit 21 may record at least video data, but in this embodiment, the audio signal input from the microphone 115 during imaging by the camera 103 is also continued to the memory card M as audio data together with the video data. Record.

  More specifically, the video recording unit 21 records video data captured by the camera 103 and 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 where the oldest file is recorded.

  The detector 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 as a trigger when various generation conditions recorded in the memory as presets are satisfied. For example, when the input measurement value exceeds various set threshold values, is less than the threshold value, is within or outside the upper and lower threshold values, Detect 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 generation condition can be updated, added, changed, deleted, etc. when the program is updated.

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

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

Impact: When the value of the acceleration sensor exceeds a threshold value Speed: Speed calculated based on GPS signal, speed acquired by the in-vehicle CAN signal port 118 (for example, as shown in the vehicle C2 in FIG. (If the speed exceeds the threshold, it is detected as a potential accident.)
Sudden acceleration / deceleration: When the value of the acceleration sensor exceeds a threshold value (for example, as shown in the vehicle C1 in FIG. , 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 acceleration sensor exceeds the threshold value Loud sound: Detected by the microphone When the volume exceeds the threshold

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

(B) When the distance between the lane and the host 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 previous vehicle is less than the threshold value. If this happens, it is detected as a potential accident.

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

(D) The detection unit 22 detects a potential accident even when an instruction is input by the user. As an instruction input mode, for example, the button 105 or the touch panel is operated, there is an instruction input from a remote controller, or there is an instruction input from a smartphone or a wearable device. It should be noted that the function equivalent to the instruction input can also be exhibited 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 state of the vehicle is normal.

(E) The detection unit 22 evaluates the acceleration in the vertical axis direction of the signal from the acceleration sensor 110 relatively lower than the accelerations in the other axial directions, and detects a potential accident. Evaluation relatively low means that the influence of acceleration in the vertical axis direction on detection of a potential accident is made lower than the influence of acceleration in other axis directions on detection of a potential accident. The vertical axis direction is a direction along the z axis, and the lower direction when the drive recorder 100 is installed horizontally is the direction of gravity. This can be realized by excluding the acceleration in the vertical axis direction, determining by making the threshold value of acceleration in the vertical axis direction higher than the threshold values in other axis directions, and the like. For example, as shown in the vehicle C3 in FIG. 1, the vibration in the vertical axis direction due to road steps and holes may exceed the threshold even if it is not a potential accident, and in that case, it is recorded as potential accident information. End up. For this reason, it is possible to eliminate information that is not a potential accident from being recorded as a potential accident by eliminating 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.

  The potential accident recording unit 25 includes information that distinguishes video data before and after the occurrence of the potential accident from video data recorded by the video recording unit 21 and position information when the detection unit 22 detects a potential accident. 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 break before and after the occurrence of the potential accident. It may be. In this embodiment, the latent accident recording unit 25 records video data from a predetermined time before the detection time to a predetermined time after the potential accident is detected by the video recording unit 21 when a potential accident is detected. Copy and store video data. The predetermined time is, for example, about 1 minute and a half to 2 minutes. The cause of the accident is based on the fact that it has been verified that the cause is in the minutes before the accident, not after the accident. The position information is vehicle position information detected by the GPS receiver 111. The potential accident information may include at least information and position information that are distinguished from the video data recorded by the video recording unit 21, but in this embodiment, information that is distinguished from the audio data recorded together with the video data. Including. That is, it includes a copy of audio data corresponding to video data before and after the occurrence of the potential accident or data with identification information that gives a break before and after the occurrence of the potential accident.

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

  In this way, a potential accident is recorded at least for a time length in which a plurality of video recording units are provided. In this example, a potential accident is recorded so as to have a time length of at least two files, thereby ensuring a video of one and a half minutes to two minutes before the occurrence of the potential accident. Conventionally, only one file before the occurrence of a potential accident was recorded, but in this embodiment, the possibility of being useful in investigating the cause of an accident is increased by including the case where a plurality of files are intentionally recorded. The latent accident information file 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. In addition, the time length of each file is not limited to the length illustrated above.

Note that detection of a potential accident by the detection unit 22 includes a case where an instruction is input from the input unit by the user as described above. That is, the potential accident information can be recorded in the potential accident recording unit 25 also by an instruction input by the user. As an instruction input mode, for example, the button 105 or the touch panel is operated, there is an operation input from a remote controller, or there is an instruction input from a smartphone or a wearable device. When such an input is received, the detection unit 22 outputs a command for prompting the potential accident recording unit 25 to record the potential accident.
The potential accident recording unit 25 can also delete the potential accident information. The instruction input mode 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. The approach means a case where the distance between the current position of the vehicle and the position of the 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 has approached the position indicated by the position information included in the potential accident information. The warning is notified to the user by screen display, light emission, and sound by a notification unit such as a screen display on the display 104, light emission or blinking of the lamp 106, and sound 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, the display screen of the display 104 displays characters such as “Please be careful when driving near 300m away” and a symbol such as “!” And also emits a lamp 106. Let

  The flag recognition unit 28 determines whether or not the potential accident recording unit 25 records the potential accident by recognizing the flag recorded in the memory card M. 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 here is identification information for determining whether or not to record potential accident information. Recognizing a flag means determining whether or not a flag is set. For example, if the flag is “1”, the potential accident information is not recorded, but if the flag is “0”, the potential accident information is recorded. However, it is free to assign any state of the flag to record or not record. The flag may be any information as long as it is information that can be recorded or not recorded.

  When the flag recognition unit 28 determines 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, and information such as measurement values acquired by the wearable device are recorded. The traveling state recording unit 29 selectively records all of these pieces of information or preset information.

(Potential accident recording device)
As shown in FIG. 1, the latent 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 latent 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 types of information necessary for the potential accident recording device 200. The touch panel includes those configured in the display device 220.

  The card reader 230 is a device that is loaded with a memory card M and inputs / outputs information to / from the memory card M. The card reader 230 reads the video data, potential accident information, identification information, flag, and running state from the memory card M, and writes the video data, potential accident information, identification information, flag, and running state to the memory card M. It functions as a part. 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. That is, potential accident information of drivers of different vehicles can be used mutually.

  The control device 240 is a computer mainly composed of a processor that is a central processing unit, and includes a recording medium such as a ROM, a RAM, a hard disk, and an SSD, an input / output interface, and the like. Functions as a processing unit. The present invention can also be understood 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 illustrating the function 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 traveling state recording unit 43, an evaluation unit 44, and a flag assigning unit 45. The communication unit 40 transmits / receives information to / from each drive recorder 100 via the network N. The video recording unit 41 records the video data recorded on the memory card M read from the card reader 230 as a database on a recording medium such as a hard disk or an SSD.

  The potential accident recording unit 42 records the potential 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. Note that the potential accident information is not read from the memory card M in which the potential accident information is not recorded because the flag is set. Furthermore, the running state recording unit 43 records the running 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 traveling state of the vehicle. The evaluation of the driving state was acquired by the frequency of the potential 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. Evaluation is performed by assigning points that are numerical values corresponding to the quality of the running state. For example, if the number of potential accident information within a predetermined period exceeds a threshold value, the point is lowered, and if the number is less than the threshold value, the point is raised. If the number of sudden brakings within a predetermined period exceeds a threshold value, the point is lowered, and if the number is less than the threshold value, the point is raised. Further, the point is increased when only a speed equal to or lower than the threshold value is output, and the point is decreased when the frequency of 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 the difference exceeds the threshold value, the point is decreased. By performing such evaluation by the evaluation unit 44 for each memory card M of the drive recorder 100, it is discriminated whether or not the driver is excellent. For example, when the point is high, it can be distinguished that it is excellent, and when the point is low, it is not excellent.

  The flag giving unit 45 gives a flag to the memory card M. The flag assignment by the flag assignment unit 45 is performed according to the traveling state of the vehicle. According to the traveling state of the vehicle, the evaluation by the evaluation unit 44 is followed. For example, when the value of the point that is evaluated by the evaluation unit 44 is lower than a threshold value, a flag is set, and when the value is equal to or higher than the threshold value, the flag is cleared. In addition, in the initial state, the flag is given according to the running state of the vehicle within a predetermined period by dropping the flag of each memory card M in the initial state. It is also possible for the unit 45 to give a flag. That is, the flag can be assigned when the traveling state is accumulated to some extent and the evaluation unit 44 has evaluated. When the flag is set, a state in which the subsequent potential accident information is not recorded occurs. Even in such a case, the evaluation unit 44 evaluates from the driving state other than the potential accident information and responds to the evaluation. Thus, the flag assigning unit 45 can also remove the flag.

  The flag assigning unit 45 can also assign a flag in response to an input from the input device 210 of the operator OP. For example, when the operator OP determines that the potential accident information of a specific vehicle or driver should not be used by another driver from the traveling state of the vehicle, the operator OP operates the input device 210 to set a flag. When it is determined that it should be used by another driver, the input device 210 is operated to clear the flag. For example, the operator OP can make the same determination as the evaluation by the evaluation unit 44 as described above, and can determine whether to give a flag. When performed by the operator OP, it is possible to make a judgment that is difficult to evaluate by the evaluation unit 44 by viewing the video data displayed on the display device 220. For example, even a driver who does not brake suddenly can make a decision such as lowering the evaluation and setting a flag if he / she is speeding with a yellow traffic light and catching an intersection.

[Operation]
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.
(Grant flag)
A procedure for giving a flag by the latent accident recording apparatus 200 will be described. As shown in FIG. 11, first, the driver of each vehicle, after finishing driving, extracts the memory card M from the drive recorder 100 and passes it to the operator OP. The operator OP inserts the memory card M into the card reader 230 so that information can be read and written (step 101).

  The operator OP operates the input device 210 to read out the video data, the potential accident information, the identification information, and the traveling 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 traveling state of each vehicle (step 103). For example, the point which is a numerical value according to the quality of the running state is given. If the evaluation point is greater than the threshold value (YES in step 104), the flag assigning unit 45 clears the flag (step 105). If the evaluation point is equal to or less than 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 worth using 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. When it is determined that reading should be performed, the input device 210 is operated to clear the flag.

(Collecting and reporting potential accident information)
Next, a procedure for collecting and reporting 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 to record 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 a 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 potential accident information is recorded, the position determination unit 26 indicates 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 while the vehicle is traveling. Is determined (YES in step 207), the warning output unit 27 outputs a warning, so that a 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 off (YES in step 209), the recording of the video data is stopped (step 210).

[Function and effect]
(1) The drive recorder 100 of this embodiment includes a camera 103 installed in a vehicle, a memory card storage unit 108, a video recording unit 21 that records video data captured by the camera 103 on a memory card M, and a latent A detection unit 22 that detects the occurrence of an accident, and information that distinguishes video data before and after the occurrence of a potential accident from video data recorded by the video recording unit when the detection unit 22 detects the occurrence of a potential accident. A potential accident recording unit 25 that records potential accident information including position information on the memory card M, and the memory card M has a flag for distinguishing whether or not potential 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.

  For this reason, it can be set so that the potential accident information is not recorded by the flag recorded in the memory card M of each drive recorder 100. For this reason, when a plurality of drivers share the potential accident information via the memory card M, unnecessary potential accident information can be eliminated in advance. Therefore, there is no need to bother with potential accident information unnecessary for other drivers, and the capacity of the storage medium can be saved. Since it is possible to determine whether or not the latent accident information is recorded by the flag, a difficult determination process is unnecessary, and the processing load on the drive recorder 100 can be reduced.

(2) It has an input unit for instructing the occurrence of a potential accident. For this reason, the potential accident information determined as necessary by each driver can be included in the potential accident information used by other drivers. Therefore, the potential accident information that does not appear in the running state of the vehicle can be recorded. It should be noted that such an instruction input can be valid only when the potential accident information is to be recorded because the flag is off, or whether the flag is on or off. Alternatively, it may be set to record the potential accident information by giving priority to the instruction input by the input unit.

(3) It has an input unit for inputting an instruction to erase the potential accident information. For this reason, it is possible to eliminate the potential accident information that each driver has clearly determined to be unnecessary from the potential accident information used by other drivers and prevent other drivers from being warned.

(4) The detection unit 22 detects the occurrence of a potential accident by evaluating the acceleration in the vertical axis direction lower than the acceleration in the other axial direction among the signals from the acceleration sensor 110. For this reason, it is possible to prevent unnecessary potential accident information from being recognized by preventing it from being recognized as a potential accident by traveling on a level difference or a hole on a road.

(5) The potential accident recording apparatus 200 according to the present embodiment sets a flag for distinguishing whether or not potential accident information is shared in the memory card M that has been captured by the camera 103 of the drive recorder 100 and recorded video data. It has a flag giving unit 45 to give.

  For this reason, the driver OP compares each driver with the judgment of the operator OP, and a flag is set in the memory card M of the drive recorder 100 of the driver, which is considered to be able to obtain only unnecessary potential accident information, in order not to record the potential accident information. The flag can be dropped to record the potential accident information in the memory card M of the drive recorder 100 of the driver who can obtain useful potential accident information.

(6) It has the evaluation part 44 which evaluates the driving | running | working state of a vehicle, and the flag provision part 45 assign | provides a flag to the memory card M according to evaluation of the evaluation part 44. FIG. For this reason, the operator OP evaluates each driver without making a judgment, and the driver card 100 of the driver's drive recorder 100, which can obtain only unnecessary potential accident information, does not record the potential accident information and is useful potential. Potential accident information can be recorded in the memory card M of the driver's drive recorder 100 from which accident information can be obtained.

[Second Embodiment]
[Constitution]
A second embodiment of the present invention will be described with reference to the drawings. About the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. In the present embodiment, as shown in FIG. 13, the control unit 120 of the drive recorder 100 includes an evaluation unit 31 and a flag assignment unit 32.

  The evaluation unit 31 evaluates the traveling state of the vehicle in the same manner as the evaluation unit 44 of the first embodiment. The flag assigning unit 32 assigns a flag to the memory card M similarly to the flag assigning unit 45 of the first embodiment. For example, a flag is set when the evaluation point of the evaluation unit 31 for the running state of the host vehicle is lower than a threshold value, and the flag is cleared when the point is equal to or higher than the threshold value. In addition, the flag provision part 32 can also provide a flag according to the input from the input part of a driver.

[Function and effect]
In this embodiment, it has the flag provision part 32 which provides a flag according to the information which shows the driving state of the vehicle carrying the drive recorder 100. FIG. For this reason, when the evaluation of the driving state is low, it is not used as potential accident information of other drivers.

[Third Embodiment]
[Constitution]
A third embodiment of the present invention will be described with reference to the drawings. About the structure similar to 1st and 2nd embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. In the present embodiment, the memory card M is weighted for each memory card M or for each potential accident information. Weighting is performed numerically. For example, the larger the numerical value, the higher the weighting, and the smaller the numerical value, the lower the weighting.

  As illustrated in FIG. 14, the control unit 120 of the drive recorder 100 includes a weight recognition unit 33 that determines whether or not the warning output unit 27 outputs a warning according to the weighting. The recognition of the weighting means that the magnitude of the weighting value is determined by comparison with a threshold value. When the weight is equal to or less than the threshold value, the weight recognition unit 33 determines not to output a warning. If the weight is greater than the threshold, the weight recognition unit 33 determines to output a warning.

  The control device 240 of the potential accident recording device 200 includes a weighting unit 52 as shown in FIG. The weighting unit 52 assigns a weight to each memory card M or each potential accident information. The weighting is given according to the running state of the vehicle. For example, in the case of the potential accident information having the same position and the same content, the weighting is reduced as the number of times decreases, and the weighting is increased as the number of times increases. For sudden braking that is applied by a driver whose sudden braking frequency is less than or equal to the threshold value, weighting is increased.

  Further, the weighting unit 52 may perform weighting based on the evaluation of the evaluation unit 44. For example, the evaluation point of the evaluation unit 44 may be used as a weighting value as it is. Further, when the evaluation point of the evaluation unit 44 for the traveling state of the host 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. May be.

  It should be noted that the weighting unit 52 can also give weighting according to the input from the input device 210 of the operator OP. For example, when the operator OP determines that the potential accident information of a specific vehicle or driver should not be output as a warning from the traveling state of the vehicle, etc., the input device 210 is operated to reduce the weight. When it is determined that it should be used by another driver, the input device 210 is operated to increase the weight.

  For example, in consideration of the time zone, time, and area, the potential accident information around the school in the morning and evening is weighted heavily. The potential accident information at points frozen in winter will also be weighted heavily. Such points may be registered as potential accident information by default.

[Operation]
The warning processing procedure according to the weighting of the present embodiment as described above will be described with reference to the flowchart of FIG. Note that the processing procedures of steps 301 to 306 and steps 310 and 311 are the same as steps 201 to 206 and steps 209 and 210 of the flowchart of FIG.

  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 weight recognition unit 33 recognizes the weight value (step 308). If the weighting is less than or equal to the threshold value (YES in step 308), the weight recognition unit 33 determines not to output a warning, so the warning output unit 27 does not output a warning. If the weighting is larger than the threshold value (NO in step 308), the weight recognition unit 33 determines to output a warning, so the warning output unit 27 outputs a warning (step 309).

[Function and effect]
In the present embodiment, since no warning is output for potential accident information with a low weighting value, the driver is not bothered by unnecessary warnings. Further, by using the evaluation of the evaluation unit 44, unnecessary warnings can be eliminated without the operator OP determining. In this embodiment, the control unit 120 includes the flag recognition unit 28 and the control device 240 includes the flag assignment unit 45. However, the flag recognition unit 28 and the flag assignment unit 45 may be omitted.

[Fourth Embodiment]
[Constitution]
A fourth embodiment of the present invention will be described with reference to the drawings. About the structure similar to 2nd and 3rd embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. In the present embodiment, as shown in FIG. 17, the control unit 120 of the drive recorder 100 includes a weighting unit 34. The weighting unit 34 is the same as the weighting unit 52 of the third embodiment. That is, in this embodiment, the drive recorder 100 can perform weighting for each potential accident information.

[Function and effect]
In the present embodiment, since the weighting unit 34 performs weighting for each potential accident information in the same drive recorder 100, the collected potential accident information is sorted into useful and unnecessary, and useful warnings are displayed. Can receive. In the present embodiment, the control unit 120 may or may not include the flag recognition unit 28 and the control device 240 may include the flag assignment 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. In the present embodiment, the flag assigning unit 45 assigns 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 read the potential accident information. This flag may be called a reading flag. Similarly to the first embodiment, the flag assigning unit 45 can also assign a flag in accordance with an input from the input device 210 of the operator OP.

[Function and effect]
In the present embodiment as described above, the card reader 230 serving as the reading unit reads the potential accident information when the flag given to the memory card M is cleared, and reads the potential accident when the flag is set. Do not read accident information. For this reason, it is possible to eliminate unnecessary latent accident information from being made into a database.

[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. In the present embodiment, the flag assigning unit 45 assigns 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 the potential accident information of a certain drive recorder 100 is written to the memory card M of another drive recorder 100. This flag may be called a write flag. Similarly to the first embodiment, the flag assigning unit 45 can also assign a flag in accordance with an input from the input device 210 of the operator OP.

[Function and effect]
In the present embodiment as described above, the card reader 230 serving as the writing unit writes other potential accident information to the other memory card M when the flag given to the memory card M is off, If is standing, do not write potential accident information. For this reason, the latent accident recording apparatus 200 collects a large number of potential accident information and does not write unnecessary latent accident information to the memory card M of the drive recorder 100. Saves storage capacity.

[Seventh Embodiment]
[Constitution]
A seventh embodiment of the present invention will be described. The present embodiment is a latent accident recording system S basically configured in the same manner as 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. In the present embodiment, the flag assigning unit 45 assigns a flag to the memory card M, as in the first embodiment. The flag of the present embodiment is identification information for determining whether to transmit the potential accident information to the drive recorder 100 and read it. This flag may be called a reading flag. Furthermore, in this embodiment, the communication unit 40 receives the potential accident information transmitted from each drive recorder 100. The potential accident recording unit 42 records the potential accident information received from each drive recorder 100 as a database on a recording medium.

  As in the first embodiment, the evaluation unit 44 evaluates the traveling state of the vehicle, and the flag assigning unit 45 assigns a flag to the potential accident information according to each drive recorder 100. The assignment of the flag is performed according to the traveling state of the vehicle. Note that, similarly to the first embodiment, the flag assigning unit 45 can also assign a flag in response to an 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 has received this, the potential accident recording unit 25 records it in the memory card M and is used for warning by the warning output unit 27 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.

[Function and effect]
In this embodiment, since potential accident information can be acquired via the network N, an accurate warning based on the latest information can be realized. In addition, the potential accident information necessary for each driver can be obtained, and unnecessary potential accident information is eliminated, so that the communication volume and the storage capacity can be suppressed.

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

  Similar to the third embodiment, the weighting unit 52 assigns a weight to each memory card M or each potential accident information. The weighting unit 52 may perform weighting based on the evaluation of the evaluation unit 44. The weighting unit 52 can also give 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 has received this, the potential accident recording unit 25 records it in the memory card M and is used for warning by the warning output unit 27 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.

[Function and effect]
In this embodiment, the potential accident information necessary for each driver is obtained, and unnecessary potential accident information is eliminated, so that the communication amount and the storage capacity can be suppressed. In the present 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 embodiment, and includes other embodiments described below. Moreover, the present invention also includes a form in which the above embodiment and the following other embodiments are all or any combination thereof. Furthermore, various omissions, replacements, and modifications 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 be different depending on the traveling state of the vehicle. As shown in FIG. 18, the latent accident recording unit 25 includes 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 shortened. In the example shown in FIG. 8, when a potential accident occurs at a time (tb) 20 seconds before the start time (t0) of the file, a video from 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, an image of a period from 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 potential accident occurs, recording is performed in the short time mode 25a, and if the value of the acceleration sensor 110 exceeds a threshold value due to a very strong impact, the mode switching unit 25c switches to the long time mode 25b. Switch and record. Thereby, only in the case of potential accident information with a high degree of risk, the long-time mode 25b can be used for investigation of the cause, and the normal time can be saved as the short-time mode 25a. This aspect may be the drive recorder 100 to which one or both of the flag and the weight are not given.

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

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

(4) When the user recognizes the dark change by manually closing the lens of the front camera 103 or the rear camera with his / her hand, a function equivalent to the instruction input can be exhibited. That is, a camera can be used as an input unit. Therefore, a potential accident may be detected when the lens of the camera is closed by hand, or the potential accident may be deleted.

(5) The drive recorder 100 in which no flag is recorded on the recording medium and no flag recognition unit is provided, but weighting is assigned to each potential accident information can be configured. In this case, the weighting unit may be in the drive recorder 100 or in the potential accident storage device 200.

(6) In the drive recorder 100 or the potential accident storage device 200, in order to erase the potential accident information, an authentication unit that requires password authentication may be provided. In that case, erasable potential accident information may be distinguished according to a flag or weighting. For example, it may be possible to delete only the potential accident information for which the flag is set and only the potential accident information whose weight is lower than the threshold value.

(7) The storage area of the video data and potential accident information of the drive recorder 100 is not limited to a removable recording medium such as the memory card M, but is incorporated 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, an SSD or a hard disk may be used. That is, an aspect having a recording medium accommodating portion, an aspect having a recording medium accommodated in a recording medium accommodating portion, and an aspect having a recording medium provided in place of the recording medium accommodating portion are also aspects of the present invention. .

(8) Information on not only a potential accident but also an accident that actually occurred may be included in the recorded, warning, and shared information. However, since the number of potential accidents is larger than that of actual accident information and the potential accidents are less likely to be shared, the present invention can be said to be suitable for application to potential accidents.

DESCRIPTION OF SYMBOLS 100 Drive recorder 101 Main body 102 Bracket 103 Camera 104 Display 105 Button 106 Lamp 107 Audio | voice output port 108 Memory card accommodating part 109 Audio | voice 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 Travel state recording unit 31 Evaluation unit 32 Flag assignment unit 33 Weight recognition unit 34 Weighting unit 240 Control device 40 Communication unit 4 DESCRIPTION OF SYMBOLS 1 Image | video recording part 42 Potential accident recording part 43 Running state recording part 44 Evaluation part 45 Flag giving part 52 Weighting part FG Windshield M Memory card S Potential accident recording system L Power cable N Network T Information communication terminal

Claims (18)

A camera installed in the vehicle;
A recording medium storage unit for storing the recording medium;
A video recording unit that records video data captured by the camera on the recording medium;
A detector that detects the occurrence of a potential accident;
When the detection unit detects the occurrence of a potential accident, information that distinguishes video data before and after the occurrence of a potential accident from video data recorded by the video recording unit, and potential accident information including position information, A potential accident recording unit for recording on the recording medium;
Have
In the recording medium, a flag for distinguishing whether to share the potential accident information is recorded,
A drive recorder comprising: a flag recognition unit that determines whether the potential accident recording unit shares potential accident information by recognizing the flag.   2. The drive recorder according to claim 1, further comprising: a recording medium accommodated in the recording medium accommodating portion or the recording medium provided in place of the recording medium accommodating portion.   3. The drive recorder according to claim 1, further comprising an input unit for inputting an instruction for occurrence of a potential accident.   4. The drive recorder according to claim 1, further comprising an input unit for inputting an instruction to delete the latent accident information.   The detection unit detects an occurrence of a potential accident by evaluating the acceleration in the vertical axis direction relatively lower than the acceleration in the other axial direction among signals from the acceleration sensor. The drive recorder in any one of thru | or 4.   The drive recorder according to any one of claims 1 to 5, wherein the time length of the video data of the potential accident recorded by the potential accident recording unit is different according to a running state of the vehicle. An evaluation unit for evaluating the running state of the vehicle;
In accordance with the evaluation of the evaluation unit, a flag applying unit that applies the flag to the recording medium;
The drive recorder according to any one of claims 1 to 6, characterized by comprising: A position detector for detecting the current position of the vehicle;
A position determination unit that determines that the current position of the vehicle detected by the position detection unit has approached the position indicated by the position information included in the potential accident information;
A warning output unit that outputs a warning when it is determined by the position determination unit that the position information indicated by the position information included in the potential accident information has approached;
Have
The recording medium is weighted for each recording medium or for each potential accident information,
8. The drive recorder according to claim 1, further comprising a weight recognition unit that recognizes the weighting and determines whether the warning output unit outputs a warning.   The drive recorder according to claim 8, further comprising a weighting unit that assigns the weighting to each potential accident information according to a traveling state of the vehicle.   A flag adding unit for adding a flag for distinguishing whether or not to share potential accident information including video data and position information before and after the occurrence of a potential accident on a recording medium that records video data captured by a camera of a drive recorder A potential accident recording device characterized by comprising: A reading unit that reads the potential accident information from a recording medium that records video data captured by the camera of the drive recorder and potential accident information including video data and position information before and after the occurrence of the potential accident;
A flag giving unit for giving a flag for distinguishing whether to read the potential accident information to the recording medium;
A potential accident recording device characterized by comprising: A document for writing the potential accident information on the recording medium of another drive recorder to a recording medium in which the video data captured by the camera of the drive recorder and the video data before and after the occurrence of the potential accident and the potential accident information including the position information are recorded. And
A flag giving unit for giving a flag for distinguishing whether to write to the recording medium of another drive recorder in the potential accident information;
A potential accident recording device characterized by comprising: An evaluation unit for evaluating the running state of the vehicle;
The latent accident recording apparatus according to any one of claims 10 to 12, wherein the flag assigning unit assigns the flag according to the evaluation of the evaluation unit.   The latent accident recording apparatus according to any one of claims 10 to 12, further comprising a weighting unit that assigns a weight to each recording medium or each potential accident information. An evaluation unit for evaluating the running state of the vehicle;
The latent accident recording apparatus according to claim 14, wherein the weighting unit assigns the weighting according to the evaluation of the evaluation unit. A communication unit connected via a network to the camera of the drive recorder mounted on the vehicle;
A potential accident recording unit that records on the recording medium potential accident information including video data and position information before and after the occurrence of a potential accident received from the drive recorder by the communication unit;
A flag giving unit for giving a flag for distinguishing whether to transmit to each drive recorder to the potential accident information;
A potential accident recording device characterized by comprising: An evaluation unit for evaluating the running state of the vehicle;
The latent accident recording apparatus according to claim 16, wherein the flag assigning unit assigns the flag according to the evaluation of the evaluation unit.   The latent accident recording apparatus according to claim 16 or 17, further comprising a weighting unit that assigns a weight to the potential accident information according to a running state of the vehicle.

Images