WO2022190481A1

WO2022190481A1 - Recording device for vehicle and recording method

Info

Publication number: WO2022190481A1
Application number: PCT/JP2021/043948
Authority: WO
Inventors: 望小谷; 義弥下田; 瑞熊井; 涼々山崎; 智工藤
Original assignee: 株式会社Ｊｖｃケンウッド
Priority date: 2021-03-12
Filing date: 2021-11-30
Publication date: 2022-09-15
Also published as: CN116601684A; JP2022139691A

Abstract

This recording device for a vehicle is provided with an imaging data acquisition unit (120) that acquires imaging data captured by a camera provided to the vehicle, a position information acquisition unit (128) that acquires position information indicating a current position of the vehicle, a travel route determination unit (129) that determines, on the basis of the position information acquired by the position information acquisition unit (128), whether the road width in the direction in which the vehicle is traveling is a narrow road as a determination condition, an oncoming vehicle information acquisition unit (130) that acquires information indicating whether an oncoming vehicle is present on the road determined to be narrow by the travel route determination unit (129), and a recording control unit (123) that records the imaging data acquired by the imaging data acquisition unit (120) so as to be overwritable, and, when the travel route determination unit (129) has determined that the road is narrow and the oncoming vehicle information acquisition unit (130) has acquired information indicating the presence of an oncoming vehicle, saves the imaging data acquired by the imaging data acquisition unit (120) as passing data able to be played back quickly.

Description

Vehicle recording device and recording method

The present disclosure relates to a vehicle recording device and a recording method, and more particularly, to a vehicle recording device and a recording method for recording images used in a vehicle.

So-called drive recorders are widely used as recording devices for vehicles. A typical drive recorder saves video when an accident such as a collision occurs. In addition to accidents, drive recorders have also been proposed that detect dangerous situations such as reckless driving and store images. For example, Patent Literature 1 describes a technology related to a drive recorder that records dangerous behavior of other vehicles.

JP 2020-052863 A

A drive recorder such as the one disclosed in Patent Document 1 detects that the behavior of another vehicle is dangerous based on an image captured by a camera provided in the drive recorder. It is not possible to detect situations that are likely to occur. For example, on narrow roads where it is necessary to slow down or compromise when passing oncoming vehicles, troubles may arise from emotional conflicts even if there is no contact between vehicles. In such a state, it becomes necessary to prove the behavior of the vehicles passing each other from the state where they cannot be seen to each other to the time when they pass each other.

In view of the above problems, an object of the present disclosure is to provide a vehicle recording device and a recording method that appropriately store video that can prove the behavior of the vehicle when it passes an oncoming vehicle.

A recording device for a vehicle according to the present disclosure includes a captured data acquisition unit that acquires captured data captured by a camera provided in a vehicle; a position information acquisition unit that acquires position information indicating a current position of the vehicle; a travel road determination unit that determines, based on the position information acquired by the information acquisition unit, that the width of the road in the direction in which the vehicle is traveling is narrow as a determination condition; An oncoming vehicle information acquisition unit that acquires information indicating the presence or absence of an oncoming vehicle on the road determined to satisfy the above; When it is determined that the condition is satisfied and the oncoming vehicle information acquisition unit acquires information indicating the presence of an oncoming vehicle, the photographed data acquired by the photographed data acquisition unit is saved as passing data so that it can be reproduced quickly. and a recording control unit.

A recording device for a vehicle according to the present disclosure includes a captured data acquisition unit that acquires captured data captured by a camera provided in a vehicle; a position information acquisition unit that acquires position information indicating a current position of the vehicle; a roadway determination unit that determines, as a determination condition, that the road is difficult for oncoming vehicles to visually see in the direction in which the vehicle is traveling, based on the position information acquired by the information acquisition unit; and the roadway determination unit. An oncoming vehicle information acquisition unit that acquires information indicating whether or not there is an oncoming vehicle on the road determined to satisfy the determination condition; satisfies the determination condition, and the oncoming vehicle information acquisition unit acquires information indicating the presence of an oncoming vehicle, the photographed data acquired by the photographed data acquisition unit can be quickly reproduced as passing data. and a recording control unit that saves in.

A recording method according to the present disclosure includes a step of determining, as a determination condition, that the road width in the direction in which the vehicle is traveling is narrow, based on position information indicating the current position of the vehicle; a step of acquiring information indicating the presence or absence of a vehicle; recording photographed data photographed by a camera provided in the vehicle so as to be overwritable; determining that the judgment condition is satisfied; and detecting the presence of an oncoming vehicle on the road. a step of storing the photographed data photographed by the camera as passing data so that it can be quickly reproduced when the information indicating the photographed data is acquired.

The recording method according to the present disclosure includes a step of determining, as a determination condition, that the road is difficult to visually see an oncoming vehicle in the direction in which the vehicle is traveling, based on position information indicating the current position of the vehicle; a step of obtaining information indicating whether or not there is an oncoming vehicle on the road; recording photographed data photographed by a camera provided in the vehicle so as to be overwritable; determining that the judgment condition is satisfied; and a step of storing the photographed data photographed by the camera as passing data so that it can be quickly reproduced, when the information indicating the existence of the vehicle is acquired.

According to the present disclosure, it is possible to appropriately save a video that can prove the behavior when passing an oncoming vehicle.

1 is a conceptual diagram showing a configuration of a vehicle recording device according to a first embodiment of the present disclosure; FIG. 4 is a flow chart showing a processing example of the vehicle recording device according to the first embodiment of the present disclosure; 1 is a diagram schematically showing a positional relationship between a vehicle equipped with a vehicle recording device according to a first embodiment of the present disclosure and another vehicle; FIG. 1 is a diagram schematically showing a positional relationship between a vehicle equipped with a vehicle recording device according to a first embodiment of the present disclosure and another vehicle; FIG. FIG. 11 is a flow chart showing a processing example of the vehicle recording device according to the second embodiment of the present disclosure; FIG.

Embodiments of the present disclosure will be described below with reference to the drawings. In the following description, as an example of the recording device for vehicle according to the present embodiment, a drive recorder used in a vehicle, which is a moving body, particularly an automobile, will be described as an example, but the present disclosure is not limited to this. do not have. As another example, it may be realized by an in-vehicle device including a navigation system provided in a vehicle, or a mobile terminal such as a portable smart phone. Moreover, the present disclosure is not limited by the following embodiments.

A first embodiment of the present disclosure will be described with reference to FIGS. FIG. 1 is a conceptual diagram showing the configuration of the vehicle recording apparatus according to the first embodiment. In FIG. 1, the vehicle recording device 10 includes a control unit 100 as a vehicle recording control device, a camera 210, a recording unit 220, a display unit 230, an operation unit 240, a sensor 250, and a GNSS (Global Navigation Satellite System) receiving unit 260. , map information 270 , and a communication unit 280 .

When the vehicle recording device 10 is integrated with the camera 210, it is mounted at a position where the front of the vehicle can be photographed. Also, the vehicle recording device 10 may be implemented by being distributed to a plurality of devices. For example, the vehicular recording device 10 is mounted on the upper part of the windshield of the vehicle in such a direction that the front of the vehicle can be photographed.

The control unit 100 is composed of a single or multiple CPUs (Central Processing Units), GPUs (Graphics Processing Units), buffer memory 121, etc. that perform various data processing, and executes various processes according to programs. The control unit 100 includes a photographed data acquisition unit 120, a photographed data processing unit 122, a recording control unit 123, a reproduction control unit 124, a display control unit 125, an operation control unit 126, an event detection unit, and an event detection unit 120. At least a unit 127, a position information acquisition unit 128, a traveling road determination unit 129, and an oncoming vehicle information acquisition unit 130 are provided. Hereinafter, each component of the control unit 100 will be described as exchanging data such as photographing data via the bus line 110 .

The control unit 100 is a recording control device that executes the operation according to the present disclosure in the vehicle recording device 10, and executes the recording method according to the present disclosure. Also, the control unit 100 is a computer that executes a program according to the present disclosure.

The camera 210 captures the surroundings of the vehicle, which is a moving body, especially the range including the front of the vehicle. The camera 210 may be provided integrally as the vehicle recording device 10, or may be connected separately by wire or wirelessly. Also, a unit including the camera 210 and the captured data acquisition unit 120 may be connected separately by wire or wirelessly. The camera 210 includes a lens, an imaging element, an AD (Analog to Digital) conversion element, etc., although not shown. Camera 210 outputs captured image data to image data acquisition section 120 .

Although a single camera 210 is shown in FIG. 1, the camera 210 may be composed of a plurality of cameras. For example, it may be an arbitrary combination of a plurality of cameras that capture images of the front, rear, sides, and interior of the vehicle, or an all-around camera.

The photographed data photographed by the camera 210 is a moving image. The imaged data may contain sound. In this case, the configuration of camera 210 includes a microphone for capturing sound.

The recording unit 220 is a non-volatile memory, such as a memory card, for recording photographed data photographed by the camera 210 under the control of the recording control unit 123 . The video recorded in the recording unit 220 is reproduced under the control of the reproduction control unit 124 . The recording unit 220 may be replaced with a separate recording/reproducing device including the recording control unit 123 and the reproduction control unit 124 in addition to the recording unit 220 . The recording unit 220 may be provided integrally with the vehicle recording device 10, or may be connected separately by wire or wirelessly.

The display unit 230 is a display device that displays various information under the control of the display control unit 125 . The display unit 230 includes a display panel such as a liquid crystal panel or an organic EL panel. The display unit 230 may be provided integrally with the vehicle recording device 10, or may be connected separately by wire or wirelessly. The display unit 230 may be another device that is wirelessly connected and includes the display control unit 125 .

The operation unit 240 is an interface that receives an operation for the operation control unit 126 and outputs received operation information to the operation control unit 126 . The operation unit 240 includes various buttons and a touch panel, and receives user operations. The operation unit 240 may receive operations from other wirelessly connected devices. The operation unit 240 receives, for example, a user's operation to start recording an event. The operation unit 240 also accepts an operation to reproduce a file or the like based on photographed data recorded or saved in the recording unit 220 .

The sensor 250 is, for example, an acceleration sensor, and detects acceleration applied to the vehicle recording device 10 or the vehicle. The sensor 250 is, for example, a triaxial acceleration sensor, and detects acceleration applied in the longitudinal direction of the vehicle as the x-axis direction, the lateral direction of the vehicle as the y-axis direction, and the vertical direction of the vehicle as the z-axis direction. Sensor 250 outputs the detected acceleration information to event detection section 127 . The sensor 250 may be provided integrally with the vehicle recording device 10, or may be connected separately by wire or wirelessly. Moreover, the sensor 250 may be a separate unit that includes the sensor 250 and the event detection section 127 .

The GNSS receiver 260 is a receiver including a GNSS antenna that receives signals from GNSS satellites. The GNSS receiver 260 outputs the received signal to the positional information acquisition unit 128 . The GNSS receiver 260 may be provided integrally as the vehicle recording device 10, or may be connected separately by wire or wirelessly. Also, the GNSS receiver 260 may be a separate device that includes the GNSS receiver 260 and the location information acquisition unit 128 .

The map information 270 is map data with which the width of the road on which the vehicle is traveling and the visibility of oncoming vehicles can be confirmed. The map information 270 may be stored in a storage device or the like included in the vehicle recording device 10, or map information referred to by the navigation system may be used. Also, the map information 270 may be stored in an external server that can be used via the communication unit 280 .

The communication unit 280 is a device that communicates with other devices and public networks, and is, for example, a communication device that performs communication by Bluetooth (registered trademark) or a communication device that performs communication by Wi-Fi (registered trademark). . The communication unit 280 may include a plurality of communication devices compatible with a plurality of communication schemes corresponding to communication targets.

The captured data acquisition unit 120 acquires captured data captured by the camera 210 . The captured data acquisition unit 120 outputs the video acquired from the camera 210 to the buffer memory 121 and the display control unit 125 .

The buffer memory 121 is an internal memory provided in the control unit 100, and temporarily stores the photographed data for a certain period of time acquired by the photographed data acquisition unit 120 while being updated.

The photographed data processing unit 122 converts the photographed data temporarily stored in the buffer memory 121 into H.264, for example. 264, MPEG-4 (Moving Picture Experts Group), or any other codec, and converted into any file format, such as MP4 format. The photographed data processing unit 122 generates photographed data as a file for a certain time from the photographed data temporarily stored in the buffer memory 121 . As a specific example, the photographed data processing unit 122 generates a file of photographed data temporarily stored in the buffer memory 121 for 60 seconds in recording order. The captured data processing unit 122 outputs the generated captured data to the recording control unit 123 . The captured data processing unit 122 also outputs the generated captured data to the display control unit 125 . The period of photographing data generated as a file is set to 60 seconds as an example, but is not limited to this.

The recording control unit 123 controls the recording unit 220 to record the photographed data filed by the photographed data processing unit 122 . The recording control unit 123 records the photographic data filed by the photographic data processing unit 122 in the recording unit 220 as overwritable photographic data while the event detection unit 127 does not detect an event. When the recording capacity of the recording unit 220 reaches the upper limit, the recording control unit 123 selects new photographed data from a recording area in which old photographed data is recorded among the overwritable photographed data recorded in the recording unit 220. overwrite and record.

In response to the fact that the event detection unit 127 has determined that an event has occurred, the recording control unit 123 overwrites the photographed data of a predetermined period including the event occurrence point, for example, the photographed data of 60 seconds before and after the event occurrence. Save as prohibited event recording data.

The recording control unit 123 determines that the traveling road determining unit 129 satisfies the conditions described later, and when the oncoming vehicle information acquiring unit 130 acquires information indicating the presence of an oncoming vehicle, the recording control unit 123 detects the presence of the oncoming vehicle on the traveling road that satisfies the conditions. The photographed data during the period until they pass each other is saved as the passing data. The passing data is preferably saved as photographed data that is prohibited from being overwritten. The passing data is saved so that it can be quickly reproduced in the event that trouble occurs when the vehicle passes an oncoming vehicle. Therefore, storing the passing data may mean transmitting it to a mobile terminal owned by a passenger such as a driver of a vehicle in which the vehicle recording device 10 is installed via the communication unit 280 . Also, the passing data may be stored so as to be easily reproducible using a display such as a navigation system provided in the vehicle in which the vehicle recording device 10 is installed.

Also, in order to reproduce the passing data quickly, when the recording control unit 123 saves the passing data in the recording unit 220 of the vehicle recording device 10, the saved passing data can be reproduced by one operation. The passing data may be reproduced when a reproduction operation is performed by the operation unit 240 as shown in FIG. Further, the touch panel as the operation unit 240 may display a playback icon for playing back the passing data with a single operation.

Further, when the passing data is stored so as to be reproducible by a pre-registered mobile terminal, the stored passing data can be displayed on the touch panel of the mobile terminal so that the stored passing data can be played back by a single operation of the mobile terminal. A replay icon may be displayed to replay the data with a single operation. The same is true when the passing data is reproduced by the navigation system provided in the vehicle in which the vehicle recording device 10 is installed.

Any method can be used to store captured data that is prohibited from being overwritten by the recording control unit 123 . For example, an overwrite prohibition flag is added to the header or payload of a section in which overwrite is prohibited in the photographed data, and the data is stored in the recording unit 220 . Alternatively, the overwrite-prohibited section in the photographed data is stored in the overwrite-prohibited area of the recording unit 220 . Alternatively, the overwrite-prohibited section in the photographed data is transmitted to another device and stored.

The reproduction control unit 124 controls reproduction of arbitrary photographed data recorded in the recording unit 220 . The reproduction control unit 124 reproduces overwritable shooting data recorded in the recording unit 220 , and also reproduces overwrite-prohibited event recording data and passing data, and outputs the reproduced data to the display control unit 125 .

The display control unit 125 outputs a video signal that causes the display unit 230 to output the video that constitutes the shooting data. More specifically, the display control unit 125 causes the display unit 230 to display the image captured by the camera 210 . The display control unit 125 causes the display unit 230 to display the image of the captured data reproduced by the reproduction control unit 124 . Further, when the display unit 230 has a touch panel function as the operation unit 240, the display control unit 125 causes the display unit 230 to display icons for performing touch operations.

The operation control unit 126 acquires operation information received by the operation unit 240, and outputs operation instructions based on the operation information to each component. When the operation control unit 126 receives an instruction to select various data to be reproduced from the operation unit 240 , the operation control unit 126 causes the reproduction control unit 124 to select a file or the like recorded in the recording unit 220 . When the operation control unit 126 acquires an instruction regarding reproduction of various data from the operation unit 240, the operation control unit 126 causes the reproduction control unit 124 to perform processing regarding reproduction. Instructions relating to reproduction of various data are, for example, reproduction start, pause, reproduction stop, enlarged display, and the like. In addition, when an event recording start operation is received from the operation unit 240, the operation control unit 126 instructs the recording control unit 123 to store photographed data for a predetermined period before and after the reception of the event recording start operation as overwrite-prohibited event recording data. save as

The event detection unit 127 acquires acceleration information detected by the sensor 250, which is an acceleration sensor, and determines that an event has been detected when acceleration corresponding to an event is detected. When it is determined that an event has been detected, the event detection section 127 outputs information indicating that the event has been detected to the recording control section 123 .

The position information acquisition unit 128 identifies the current position based on the signals from the GNSS satellites received by the GNSS reception unit 260 and outputs the current position information to the travel route determination unit 129 .

Based on the current location information of the vehicle acquired by the location information acquisition unit 128, the travel road determination unit 129 refers to the map information 270 to identify the road on which the vehicle is traveling. The traveling road determination unit 129 further identifies the traveling direction of the vehicle on the road on which the vehicle is traveling from the transition of the current location information of the vehicle acquired by the location information acquisition unit 128, and determines the traveling direction of the vehicle on the road on which the vehicle is traveling. Determine whether the directional form satisfies the condition.

The condition determined by the traveling road determination unit 129 is that the road width in the direction in which the vehicle is traveling is narrow, or the road is difficult to see for oncoming vehicles, or both. Specifically, the width of the road in the traveling direction of the vehicle is narrow enough to make it difficult for vehicles to pass each other, and the road is difficult to see for oncoming vehicles. An example of a narrow road width in the condition is when the road on which the vehicle is traveling or the road in the direction of travel is narrow enough to allow vehicles to decelerate and pass each other, or when vehicles are required to pass each other. It is determined that the road is such that a shelter or the like is installed. A specific example is a road with a width of less than 4 m, excluding one-way roads. In addition, an example of a road that makes it difficult to see oncoming vehicles in the conditions is a curved road with a high curvature rate, and it is determined that oncoming vehicles cannot be seen due to buildings, trees, terrain, etc. on the roadside. . Specific examples include roads in urban areas surrounded by buildings and fences, winding roads in mountainous areas, and the like.

The oncoming vehicle information acquisition unit 130 uses the communication function of the communication unit 280 to acquire information indicating whether or not there is an oncoming vehicle on the road determined by the traveling road determination unit 129 to satisfy the conditions. As a specific example, the oncoming vehicle information acquisition unit 130 acquires information indicating the presence or absence of an oncoming vehicle from an oncoming vehicle detection device installed on the road when entering a section that satisfies the conditions. As another example, the oncoming vehicle information acquisition unit 130 acquires position information of the vehicle via a network when entering a section that satisfies the conditions, and an external server for providing information indicating whether or not there is an oncoming vehicle. information indicating whether or not there is an oncoming vehicle. A description of these specific examples will be given later.

Next, the flow of recording processing executed by the vehicle recording device 10 will be described with reference to FIG. The start of the processing in FIG. 2 means, for example, that the vehicle recording apparatus 10 becomes operable by turning on the engine or power of the vehicle. The start of the process may be started by instructing the start of the recording process on the operation unit 240 .

With the start of processing, the vehicle recording device 10 starts normal recording (step S01). The normal recording started in step S01 includes acquisition of the first photographed data from the camera 210 by the photographed data acquisition unit 120, filing of the photographed data by the photographed data processing unit 122, and recording of the photographed data by the recording control unit 123. 220 is to start recording. In normal recording, photographed data is recorded in the recording unit 220 as overwritable data, so it is also called loop recording. In step S01, along with the start of normal recording, event detection by event detection unit 127 and judgment by traveling road judgment unit 129 on whether or not conditions are satisfied are also started.

After normal recording or the like is started in step S01, the event detection unit 127 determines whether an event has been detected (step S02). The event detection unit 127 determines that an event has been detected when the acceleration detected by the sensor 250 corresponds to, for example, the collision of an object against the vehicle. Acceleration that corresponds to collision of an object against a vehicle is acceleration whose absolute value is a predetermined threshold value or more, acceleration whose absolute value is a predetermined threshold value or more, and which rises sharply.

If it is determined in step S02 that an event has been detected (step S02: Yes), the recording control unit 123 saves the photographed data including the detection point of the event detected in step S02 as event recording data (step S03), and proceeds to step S07. More specifically, in step S03, when an event is detected, the recording control unit 123 stores photographed data such as 60 seconds before and after the detection of the event as overwrite-prohibited data as event recording data.

If it is determined in step S02 that no event has been detected (step S02: No), the process proceeds to step S04.

In step S04, the road determination unit 129 determines whether the road on which the vehicle is traveling satisfies the conditions. The timing for determining that the condition is satisfied may be determined from a predetermined distance ahead in the traveling direction on the road on which the vehicle is traveling, in addition to when the current position of the vehicle is in a state where the condition is satisfied. The predetermined distance is, for example, 10m. Therefore, when the road on which the vehicle is traveling changes from a state in which the conditions are not satisfied to a state in which the conditions are satisfied, or when the road on which the vehicle is traveling is traveling in a state in which the conditions are not satisfied, from a predetermined distance ahead If the conditions are satisfied, it is determined that the conditions are met.

If it is determined in step S04 that the conditions are not satisfied (step S04: No), the process proceeds to step S07. In step S04, when it is determined that the condition is satisfied (step S04: Yes), the process proceeds to step S05. In step S05, the oncoming vehicle information acquisition unit 130 acquires information indicating whether or not there is an oncoming vehicle on the road that satisfies the conditions. A method of acquiring information indicating whether or not there is an oncoming vehicle in step S05 will be described later.

In step S05, if the information indicating whether or not there is an oncoming vehicle indicates that there is no oncoming vehicle (step S05: No), proceed to step S07. In step S05, if the information indicating whether or not there is an oncoming vehicle indicates that there is an oncoming vehicle (step S05: Yes), the recording control unit 123 starts from when it is determined that the condition is met, and when the oncoming vehicle passes each other. The photographed data including at least the period up to is stored as the passing data (step S06).

In step S07, the recording control unit 123 determines whether or not the shooting by the camera 210 has ended. The end of recording in step S07 is, for example, the case where the operation of the vehicle recording apparatus 10 is terminated by turning off the vehicle engine or power source. The end of recording may be ended by instructing the end of the recording process on the operation unit 240 .

Next, a processing example from step S04 to step S06 will be described using FIGS. 3 and 4. FIG. In FIG. 3, a vehicle A1 traveling on a road R is equipped with the recording device 10 for vehicle. The vehicle recording device 10 of the vehicle A1 determines that the road R on which the vehicle A1 is traveling is narrow by referring to the map information 270 based on the current position information of the vehicle A1. Similarly, based on the map information 270, the vehicle recording device 10 of the vehicle A1 determines that the traveling direction of the vehicle A1 on the road R, for example, a predetermined distance ahead of the vehicle A1, such as 10 m ahead, is a road where oncoming vehicles are difficult to see. It has been determined that In this case, it is judged that the road is difficult to see the oncoming vehicle because there is a curve C on the road R, the visibility inside the curve C is poor, and the presence of the oncoming vehicle A2 is not visible from the position of the vehicle A1. This is due to the fact that visual confirmation is not possible. Therefore, the vehicle recording device 10 determines that the width of the road in the traveling direction of the vehicle A1 is narrow or that the road is difficult to see for oncoming vehicles. The arrows of vehicle A1 and vehicle A2 indicate the direction of travel of each vehicle.

When the traveling road determination unit 129 determines that the condition is satisfied based on the position and traveling direction of the vehicle A1, the oncoming vehicle information acquisition unit 130 uses the communication unit 280 to obtain an oncoming vehicle inspection installed on the road side of the road R. Information indicating the presence or absence of an oncoming vehicle is acquired from the exit device B.

The oncoming vehicle detection device B is equipped with a camera capable of photographing the extending direction of the road R from the curve C. In other words, the oncoming vehicle detection device B photographs the direction in which the vehicle A1 is traveling and the direction in which the vehicle A2 is traveling in the state of FIG. process and detect the vehicle. The oncoming vehicle detection device B can detect an oncoming vehicle not only by an image captured by a camera, but also by any method such as radar.

Information indicating the presence or absence of an oncoming vehicle is transmitted from the oncoming vehicle detection device B by a short-range wireless communication method such as Bluetooth (registered trademark). enters the communication range of the radio waves emitted from the oncoming vehicle detection device B installed on the curve C, information indicating the presence or absence of an oncoming vehicle can be obtained. In the state of FIG. 3, the vehicle recording device 10 mounted on the vehicle A1 acquires information indicating that the oncoming vehicle A2 is present after turning the curve C. In the state shown in FIG. In FIG. 3, when the vehicle A2 is also equipped with the vehicle recording device 10, the vehicle recording device 10 mounted on the vehicle A2 is detected from the oncoming vehicle detection device B at the point where the curve C is turned. Acquire information indicating that the car A1 exists. At this time, the vehicle recording device 10 may inform the driver of the vehicle A1 that there is an oncoming vehicle by means of sound or image.

The recording control unit 123 in the vehicle recording device 10 detects that the position of the vehicle A1 meets the condition when the vehicle A1 on which the vehicle recording device 10 is mounted advances further from the position shown in FIG. 3 and passes the vehicle A2. Photographed data including at least a period from when it is determined that the condition is satisfied to when the vehicle A2 passes each other is stored as passing data. In FIG. 3, only the vehicle A2 passes by the vehicle A1, but a plurality of vehicles may pass each other. For this reason, the recording control unit 123 may store, as passing data, photographed data during a period from when it is determined that the road R satisfies the condition to when the curve C ends.

4 differs from FIG. 3 in the method of acquiring information indicating the presence of an oncoming vehicle by the oncoming vehicle information acquisition unit 130, and the other processes are common. In FIG. 4, vehicle A1 and vehicle A2 are constantly transmitting their respective vehicle n current position information to server S via network N. In FIG. A wireless communication method for connecting the vehicle A1 to the network N is, for example, a mobile phone line or Wi-Fi (registered trademark). In addition, the server S acquires the position information of a plurality of vehicles and provides the position information of other vehicles, particularly the position information of other vehicles existing in the vicinity of the vehicle receiving the service, without specifying the vehicle. It is a server for

In FIG. 4, when the traveling road determination unit 129 determines that the condition is satisfied based on the position and traveling direction of the vehicle A1, the oncoming vehicle information acquisition unit 130 uses the communication unit 280 to transmit the data to the server S via the network N. Get the location information of other vehicles from The oncoming vehicle information acquisition unit 130 refers to the map information 270 acquired by the traveling road determination unit 129 for the location information of the other vehicle acquired from the server S, and determines that the vehicle A2, which is another vehicle, exists on the road R. to decide. In addition, the oncoming vehicle information acquisition unit 130 acquires the position information of the other vehicle from the server S every 0.1 seconds, for example, so that the vehicle A2, which is another vehicle, travels toward the vehicle A1 as an oncoming vehicle. determine what you are doing.

On the roads shown in FIGS. 3 and 4, since the road width of the road R is narrow, the driver of the vehicle A1 or the vehicle A2, for example, does not know that the vehicle A2, which is an oncoming vehicle, is approaching. In some cases, the vehicle may enter curve C without stopping at the roadside edge, or may enter curve C without sufficiently decelerating. In addition, even when the presence of an oncoming vehicle is recognized, the vehicle may proceed without waiting for the oncoming vehicle to pass before the curve C, or may proceed without stopping at the roadside edge of the road R. Sometimes. In such cases, trouble may occur between the drivers of the vehicle A1 and the vehicle A2. In the vehicle equipped with the vehicle recording device 10, the above-described cross-passing data is recorded. Therefore, you can prove that you have been driving with safety in mind.

In addition, on the roads shown in FIGS. 3 and 4, the width of the road R is narrow when passing each other, so the side mirrors of vehicles passing each other may be scratched. In such a case, since the acceleration applied to the vehicle is small, the event detection unit 127 does not detect it as an event. In such a case, since the above-mentioned passing data is recorded in the vehicle equipped with the vehicle recording device 10, it is proved that the vehicle is not forcibly cutting into the narrow road. be able to.

Next, a second embodiment of the present disclosure will be described with reference to FIG. The configuration of the vehicle recording apparatus according to the second embodiment is the same as the configuration of the vehicle recording apparatus according to the first embodiment, so the description is omitted. After storing the passing data, the vehicle recording apparatus 10 according to the second embodiment performs processing for quickly reproducing the stored passing data.

FIG. 5 is a diagram showing the flow of recording processing executed by the vehicle recording device 10 according to the second embodiment. Since the processes of steps S11 to S16 and S21 shown in FIG. 5 are common to the processes of steps S01 to S06 and S07 shown in FIG. 2, the description thereof is omitted.

After saving the passing data in step S16, the display control unit 125 displays on the display unit 230 of the vehicle recording device 10 an icon for starting to reproduce the passing data saved in step S16 by one operation. (step S17). Icons displayed on the display unit 230 operate as the operation unit 240 . By such processing, if a trouble occurs during the passing, it is possible to quickly reproduce the photographed data as the passing data obtained by photographing the situation up to the passing.

Further, in the process of step S17, the passing data saved in step S16 is displayed on the display screen of a mobile terminal such as a smart phone registered in advance in the vehicle recording device 10, and an icon for starting to reproduce it by one operation is displayed. may be displayed. In this case, the display screen of the mobile terminal operates as the operation unit 240 .

After step S17, the reproduction control unit 124 determines whether or not the operation control unit 126 has accepted the operation of the icon displayed in step S17 (step S18). If it is determined in step S18 that an icon operation has been received (step S18: Yes), the reproduction control unit 124 starts reproducing the passing data saved in step S16 (step S19). When the process of step S19 is executed by a portable terminal, the passing data may be downloaded from the vehicle recording device 10 and reproduced, or may be reproduced in a streaming format.

After the reproduction of the passing data is started in step S19, the reproduction control unit 124 determines whether or not the operation control unit 126 has received a reproduction end process (step S20). If it is determined in step S20 that the reproduction has not ended (step S20: No), the process of step S20 is executed again, and if it is determined that the reproduction has ended (step S20: Yes), the process proceeds to step S21. do.

For the icon displayed in step S17, if the reproduction start operation is not accepted within, for example, five minutes after the icon is displayed, it is determined that there is no reproduction operation (step S18: No), and the icon is displayed. Upon completion, the process proceeds to step S21. Also, if the process is completed before 5 minutes have elapsed since the icon was displayed, the process is terminated.

By performing this kind of processing, even if trouble occurs while passing each other, the passing data can be played back quickly. .

It should be noted that the present disclosure is not limited to the above embodiments, and can be modified as appropriate without departing from the scope. For example, in the above-described embodiment, the passing data is preferably stored as photographed data that is prohibited from being overwritten. You can change it. Also, the passing data may be saved with a low overwrite priority rather than overwrite prohibited.

Also, a program for causing a computer to execute the above-described processes can be stored using various types of non-transitory computer-readable media and supplied to a computer operating as a recording/reproducing device.

The vehicle recording device and recording method of the present disclosure can be applied, for example, to a drive recorder mounted on a vehicle.

10 vehicle recording device 100 control unit 110 bus line 120 photographed data acquisition unit 121 buffer memory 122 photographed data processing unit 123 recording control unit 124 reproduction control unit 125 display control unit 126 operation control unit 127 event detection unit 128 position information acquisition unit 129 Traveling road determination unit 130 Oncoming vehicle information acquisition unit 210 Camera 220 Recording unit 230 Display unit 240 Operation unit 250 Sensor 260 GNSS reception unit 270 Map information 280 Communication unit

Claims

a photographed data acquisition unit for acquiring photographed data photographed by a camera provided in a vehicle;
a position information acquisition unit that acquires position information indicating the current position of the vehicle;
a travel road determination unit that determines, as a determination condition, that the road width in the direction in which the vehicle is traveling is narrow, based on the position information acquired by the position information acquisition unit;
an oncoming vehicle information acquisition unit that acquires information indicating the presence or absence of an oncoming vehicle on the road determined by the traveling road determination unit to be narrow;
When the photographed data acquired by the photographed data acquisition unit is recorded so as to be overwritable, the traveling road determination unit determines that the road width is narrow, and the oncoming vehicle information acquisition unit acquires information indicating the presence of an oncoming vehicle. a recording control unit that saves the photographed data acquired by the photographed data acquisition unit as passing data so that it can be reproduced quickly;
A recording device for a vehicle.
a photographed data acquisition unit for acquiring photographed data photographed by a camera provided in a vehicle;
a position information acquisition unit that acquires position information indicating the current position of the vehicle;
A traveling road determination unit that determines, as a determination condition, that the road is difficult for oncoming vehicles to visually see in the direction in which the vehicle is traveling, based on the position information acquired by the position information acquisition unit;
an oncoming vehicle information acquisition unit that acquires information indicating the presence or absence of an oncoming vehicle on a road that the traveling road determination unit determines that it is difficult to visually see an oncoming vehicle;
The photographed data acquired by the photographed data acquisition unit is recorded so as to be overwritable, the traveling road judgment unit judges that it is difficult to visually see the oncoming vehicle, and the oncoming vehicle information acquisition unit acquires information indicating the existence of the oncoming vehicle. a recording control unit that saves the photographed data acquired by the photographed data acquisition unit as passing data so that it can be reproduced quickly,
A recording device for a vehicle.
The traveling road judging section judges, as the judging condition, that the width of the road along which the vehicle is traveling is narrow enough to make it difficult for the vehicles to pass each other, and that the road is difficult to visually see oncoming vehicles. do,
The vehicle recording device according to claim 1 .
The recording control unit stores, as the passing data, an image from when the traveling road determination unit determines that the determination condition is satisfied to when the oncoming vehicle passes each other.
3. The recording device for vehicle according to claim 1 or 2.
further comprising a reproduction control unit that reproduces the passing data,
The reproduction control unit enables preferential reproduction of the stored passing data after passing an oncoming vehicle.
5. The vehicle recording apparatus according to claim 1.
a step of determining, based on position information indicating the current position of the vehicle, that the road is narrow in the direction in which the vehicle is traveling, as a determination condition;
a step of obtaining information indicating whether or not there is an oncoming vehicle on the road;
Photographed data photographed by a camera provided in the vehicle is recorded so as to be overwritable, and when it is determined that the judgment condition is met and information indicating the existence of an oncoming vehicle on the road is acquired, the camera photographs. a step of saving captured data as passing data so that it can be played back quickly;
a recording method performed by a recording device for a vehicle.
a step of determining, based on the position information indicating the current position of the vehicle, that the road in the direction in which the vehicle is traveling is difficult for oncoming vehicles to visually see, as a determination condition;
a step of obtaining information indicating whether or not there is an oncoming vehicle on the road;
Photographed data photographed by a camera provided in the vehicle is recorded so as to be overwritable, and when it is determined that the judgment condition is met and information indicating the existence of an oncoming vehicle on the road is acquired, the camera photographs. a step of saving captured data as passing data so that it can be played back quickly;
a recording method performed by a recording device for a vehicle.