JP2020052863A - Vehicle monitoring device - Google Patents

Abstract

To provide a vehicle monitoring device capable of recording dangerous behavior of other vehicles with respect to an own vehicle as a video.SOLUTION: A vehicle monitoring device is a device that is mounted on a vehicle having an on-vehicle camera and monitors other vehicles around the vehicle in traveling. The vehicle monitoring device includes: an information acquisition portion that acquires information relating to a preceding vehicle and a following vehicle of the vehicle and a state and a surrounding environment of the vehicle; a deriving portion that derives a braking distance of the vehicle on the basis of the state and the surrounding environment of the vehicle; a determination portion that determines the entry of the preceding vehicle and the following vehicle into the range of the braking distance for the vehicle; and a communication portion that outputs a notification signal relating to a start of recording of a video of the on-vehicle camera, when the preceding vehicle and the following vehicle stay for a first predetermined period within the range of the braking distance to the vehicle.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle monitoring device.

  In recent years, various techniques for monitoring other vehicles around a running vehicle have been proposed. For example, the collision prevention system proposed in Patent Literature 1 detects that the behavior of a following vehicle is a tilting operation with respect to the own vehicle. It is assumed that, for example, the case where the following vehicle is meandering right and left is when the situation in which the inter-vehicle distance between the own vehicle and the following vehicle is short continues for a predetermined time. Then, the collision prevention system issues a warning to the following vehicle using the warning device when it is determined that the following vehicle is driving the self-vehicle. Thus, it is possible to encourage the following vehicle that is performing the driving operation to take an appropriate inter-vehicle distance.

International Publication No. WO 2017/018254

  However, the related art has a problem in that it is not possible to record and store a dangerous behavior of another vehicle with respect to the own vehicle as a video.

  The present invention has been made in view of the above problems, and has as its object to provide a technology that can record a dangerous behavior of another vehicle with respect to the own vehicle as a video.

  The vehicle monitoring device according to the present invention is mounted on a vehicle having an on-vehicle camera, and is a device that monitors other vehicles around the traveling vehicle, and monitors the state of the preceding vehicle and the following vehicle of the vehicle and the state of the vehicle. An information acquisition unit that acquires information about the surrounding environment, a derivation unit that derives a braking distance of the vehicle based on the state of the vehicle and the surrounding environment, and a vehicle within the range of the braking distance to the vehicle, the preceding vehicle and A determination unit configured to determine the entry of the following vehicle, and, when the preceding vehicle and the following vehicle stay within a range of the braking distance with respect to the vehicle for a first predetermined period, start recording of an image of the vehicle-mounted camera. And a communication unit that outputs a notification signal (first configuration).

  Further, in the vehicle monitoring device of the first configuration, the determination unit is configured such that the preceding vehicle and the following vehicle repeatedly enter and leave the vehicle within the range of the braking distance with respect to the vehicle, thereby accumulating the information. A configuration (second configuration) may be such that when the first predetermined period has been reached, it is determined that the vehicle has stayed within the range of the braking distance for the first predetermined period.

  Further, in the vehicle monitoring device according to the first or second configuration, the information acquisition unit acquires a captured image captured by the on-vehicle camera, and the determination unit determines, based on the captured image, the preceding vehicle and A configuration in which the specific behavior that the following vehicle runs off the lane is determined, and the communication unit outputs the notification signal when the specific behavior is repeated a first predetermined number of times within a predetermined time (third configuration). It may be.

  Further, in the vehicle monitoring device according to the first or second configuration, the information acquisition unit acquires a photographed image photographed by the on-board camera, and the determination unit determines a distance from the following vehicle based on the photographed image. The communication device may be configured to determine a specific behavior of receiving passing, and to output the notification signal when the specific behavior is repeated a first predetermined number of times within a predetermined time (fourth configuration). good.

  Further, in the vehicle monitoring device according to the first or second configuration, the information acquisition unit acquires a sound behind the vehicle, and the determination unit receives horn from the following vehicle based on the sound. A configuration (fifth configuration) that determines a specific behavior and outputs the notification signal when the specific behavior is repeated a first predetermined number of times within a predetermined time period.

  Further, in the vehicle monitoring device according to any one of the first to fifth configurations, the communication unit may output a control signal for automatically starting recording of the video as the notification signal (sixth configuration). Is also good.

  In the vehicle monitoring device according to any one of the first to fifth configurations, the communication unit outputs a signal requesting a user to start or not to start recording the video as the notification signal, When the instruction is an instruction to start recording of the video, a control signal for starting recording of the video is output through the communication unit, and the instruction is In the case of an instruction of whether to start recording, the determination unit determines the stay of the preceding vehicle and the following vehicle within a predetermined determination distance shorter than the braking distance for the vehicle, and A configuration (seventh configuration) may be such that, when the preceding vehicle and the following vehicle stay within a range of the determination distance for a second predetermined period, the communication unit outputs the notification signal.

  Further, in the vehicle monitoring device according to the third to fifth configurations, the communication unit outputs a signal requesting a user as to whether or not to start recording the video as the notification signal, and When the instruction is an instruction to start recording of the video, a control signal for starting recording of the video is output through the communication unit, and the instruction is In the case of the instruction of whether or not to start recording, if the determination unit determines that the same specific behavior has been repeated a second predetermined number of times within a predetermined time, the communication unit outputs the notification signal. A configuration (eighth configuration) may be used.

  Further, in the vehicle monitoring device according to any one of the third to fifth configurations, the determination unit may determine a plurality of types of stays within the braking distance of the preceding vehicle and the following vehicle and the specific behavior, (3) When the determination is made within a predetermined period, the communication unit may output a control signal for automatically starting recording of the video as the notification signal (a ninth configuration).

  Further, in the vehicle monitoring device according to the seventh or eighth configuration, the number of times of the instruction from the time when the instruction to start or stop recording the video is received from the user to the time when the instruction to start recording the video is received from the user. A storage unit that stores an average value of the data, and when the instruction from the user reaches the average value, the communication unit outputs a control signal for automatically starting recording of the video as the notification signal. (Tenth configuration).

  Further, in the vehicle monitoring device according to any one of the third to tenth configurations, the information acquisition unit acquires position information of the vehicle, and the determination unit determines that the position information is within a range of the braking distance by the preceding vehicle and the following vehicle. And the communication unit, when it is determined that the same one of the specific behavior and the specific behavior has been repeated a third predetermined number of times, the communication unit detects the video or the video based on the video. A configuration (eleventh configuration) may be configured to report information on the preceding vehicle and the following vehicle and the position of the vehicle to a predetermined reporting destination.

  According to the configuration of the present invention, for example, when a preceding vehicle and a following vehicle stay within a range of a braking distance with respect to the own vehicle for a predetermined period, it is possible to start recording an image of an on-vehicle camera. That is, it is possible to record a dangerous behavior of another vehicle with respect to the own vehicle as a video.

The figure which shows the structure of the vehicle monitoring apparatus of 1st Embodiment. Diagram for explaining a situation related to the approach of another vehicle within the braking distance of the own vehicle 5 is a flowchart illustrating an operation example of the vehicle monitoring device according to the first embodiment during automatic recording. 4 is a flowchart illustrating an example of an operation of the vehicle monitoring device according to the first embodiment during manual recording. Diagram for explaining the relationship between the braking distance and the determination distance Diagram for explaining a situation related to the approach of another vehicle within the determination distance of the own vehicle The figure which shows the structure of the vehicle monitoring apparatus of 2nd Embodiment. 5 is a flowchart illustrating an operation example of the vehicle monitoring device according to the second embodiment during automatic recording. 5 is a flowchart illustrating an example of an operation of the vehicle monitoring device according to the second embodiment during manual recording. Explanatory diagram of a method for determining the behavior of another vehicle by the vehicle monitoring device of the first modification. Explanatory drawing of specific behavior of another vehicle determined by the vehicle monitoring device of Modification Example 2 Explanatory drawing of the specific behavior of another vehicle determined by the vehicle monitoring device of the modification 3 Explanatory drawing (1) of specific behavior of another vehicle determined by the vehicle monitoring device of Modification 4 Explanatory drawing (2) of the specific behavior of another vehicle determined by the vehicle monitoring device of the modification 4

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the contents of the embodiments described below.

  Further, in the following description, the direction in which the vehicle travels straight, that is, the direction from the driver's seat to the steering wheel is referred to as “forward (forward)”. The direction in which the vehicle travels straight, that is, the direction from the steering wheel to the driver's seat is referred to as “rearward (rearward)”. The direction from the right side to the left side of the driver who is facing forward and the direction perpendicular to the straight traveling direction and the vertical line of the vehicle is referred to as “left direction”. A direction from the left side to the right side of the driver facing forward, which is a direction perpendicular to the straight traveling direction and the vertical line of the vehicle, is referred to as a “right direction”.

<1. First Embodiment>
<1-1. Outline of vehicle monitoring device>
FIG. 1 is a diagram illustrating a configuration of a vehicle monitoring device 1 according to the first embodiment. The vehicle monitoring device 1 is mounted on the vehicle 2 as, for example, a vehicle monitoring ECU (Electronic Control Unit).

  The vehicle monitoring device 1 is mounted on a vehicle 2 having a drive recorder 3 (a photographing unit 31: a vehicle-mounted camera). The vehicle monitoring device 1 is a device that monitors other vehicles around the running vehicle 2. The vehicle 2 further includes, for example, a sensor unit 4 and an automatic driving control ECU 5. In the present embodiment, the vehicle monitoring device 1 acquires information on the preceding vehicle and the following vehicle of the vehicle 2 (own vehicle) and the state and the surrounding environment of the vehicle 2 from the drive recorder 3 or the sensor unit 4 and performs other operations on the vehicle 2 The operation for recording the dangerous behavior of the vehicle as an image in the drive recorder 3 is performed.

  The drive recorder 3 records the vehicle 2 and surrounding conditions of the vehicle 2 during traveling. The drive recorder 3 includes, for example, a photographing unit 31 and a storage unit 32.

  The photographing unit 31 is provided for photographing a situation around the vehicle. In the present embodiment, the imaging unit 31 includes, for example, at least one in-vehicle camera. It is preferable that the vehicle-mounted camera includes at least one of a front camera that photographs the front direction of the vehicle 2 and a back camera that photographs the rear direction of the vehicle 2, and both of them.

  The storage unit 32 is a nonvolatile memory such as a flash memory, for example, and stores various types of information. The storage unit 32 stores, for example, a program as firmware and various data used by the program. Further, the storage unit 32 stores the video captured by the capturing unit 31. In other words, the video of the vehicle-mounted camera of the vehicle 2 is recorded in the storage unit 32.

  The drive recorder 3 may further include an acceleration sensor, a position sensor, and the like (not shown). The acceleration sensor detects a change in acceleration generated in the vehicle 2, that is, a shock. The position sensor includes, for example, a GPS (Global Positioning System) and acquires position information of the vehicle 2.

  The sensor unit 4 has a plurality of sensors that detect information on the vehicle 2 on which the vehicle monitoring device 1 is mounted. The information on the vehicle 2 may include information on the vehicle itself and information on the surroundings of the vehicle. In the present embodiment, the sensor unit 4 includes, for example, a vehicle speed sensor that detects the speed of the vehicle, a steering angle sensor that detects the rotation angle of the steering, a shift sensor that detects the operation position of the shift lever of the transmission of the vehicle, It includes a vibration sensor that detects vibration, an inclination sensor that detects the inclination of the vehicle, an obstacle sensor that detects people, animals, vehicles, and other objects around the vehicle.

  As the obstacle sensor, for example, an ultrasonic sensor, an optical sensor using infrared rays, a radar, or the like can be used to detect people, animals, vehicles, and other objects around the vehicle. The obstacle sensor is buried in a plurality of places such as a front bumper, a rear bumper, and a door of the vehicle 2. The obstacle sensor detects the presence, direction, position, and speed of a person or another vehicle by transmitting a transmission wave toward the periphery of the vehicle and receiving a reflected wave reflected by a person or another vehicle. .

  The automatic driving control ECU 5 generates a control signal related to automatic driving of the vehicle 2 based on information acquired from the vehicle monitoring device 1, the drive recorder 3 (vehicle-mounted camera), the sensor unit 4, and the like. For example, the automatic driving control ECU 5 determines an automatic driving operation characteristic that is a time-series change pattern of at least one of a deceleration parameter corresponding to a brake operation amount, an acceleration parameter corresponding to an accelerator operation amount, and a steering angle parameter corresponding to a steering operation amount. Let me change. The control signal generated by the automatic driving control ECU 5 is transmitted to a vehicle control ECU (not shown).

  Further, the vehicle 2 may be equipped with a navigation device. The navigation device has, for example, a GPS, map information, a display unit, and a speaker. The navigation device can recognize the position of the vehicle 2 on which the vehicle monitoring device 1 is mounted, using the GPS and the map information. The display unit and the speaker have their output units facing the interior of the vehicle. The navigation device can display the map, the road information, and the position of the vehicle 2 on the display unit, and can also notify by voice from a speaker.

  It should be noted that the display unit may display a notification signal from the vehicle monitoring device 1 as an image. In addition, the notification signal from the vehicle monitoring device 1 can be sent to the speaker as sound. The display unit and the speaker may be separate devices that do not belong to the navigation device. Further, the display unit is, for example, a liquid crystal display panel, and may be provided with an input unit of a touch panel type or the like so that a user can input information.

<1-2. Details of vehicle monitoring device>
The vehicle monitoring device 1 includes an information acquisition unit 11, a derivation unit 12, a determination unit 13, and a communication unit 14. The function of each of these components included in the vehicle monitoring device 1 is realized by a CPU (Central Processing Unit) (not shown) performing arithmetic processing according to a program. The vehicle monitoring device 1 further includes a storage unit 15.

  In the present embodiment, details of the vehicle monitoring device 1 will be described with reference to FIG. FIG. 2 is a diagram for explaining a situation related to the entry of another vehicle into the braking distance of the own vehicle. In the present embodiment, a description will be given on the assumption that the other vehicle that exhibits a dangerous behavior with respect to the vehicle 2 (own vehicle) is the following vehicle 101. The vehicle monitoring device 1 can be similarly applied to a case where another vehicle exhibiting a dangerous behavior with respect to the vehicle 2 (own vehicle) is a preceding vehicle.

  The information acquisition unit 11 acquires information on a preceding vehicle and a following vehicle of the vehicle 2 and information on a state and a surrounding environment of the vehicle 2. In the present embodiment, the information acquisition unit 11 acquires, for example, information about the following vehicle 101 of the traveling vehicle 2, and the state of the vehicle 2 and the surrounding environment, based on information from the drive recorder 3 or the sensor unit 4, for example. .

  More specifically, in the present embodiment, the information acquisition unit 11 acquires a captured image captured by the imaging unit 31 (vehicle-mounted camera), and detects the presence of the following vehicle 101. The information acquisition unit 11 may detect the presence of the following vehicle 101 using the obstacle sensor of the sensor unit 4. Further, the information on the following vehicle 101 includes, for example, information on the speed of the following vehicle 101. The state of the vehicle 2 includes, for example, information on the speed of the vehicle 2. The information on the surrounding environment of the vehicle 2 includes, for example, information on the road surface. The information on the road surface includes, for example, information such as whether the road surface is asphalt, concrete, gravel, etc., or is dry, wet, covered with snow, or frozen. The information on the road surface can be recognized from the captured image, and the difference in the friction coefficient with the tire affects the derivation of the braking distance of the vehicle 2 and the like. Further, in the present embodiment, the information acquisition unit 11 may acquire the position information of the vehicle 2 from, for example, the drive recorder 3 or the navigation device.

  The deriving unit 12 derives the braking distance of the vehicle 2 based on the state of the vehicle 2 and the surrounding environment. In the present embodiment, the deriving unit 12 derives the braking distance D1 (see FIG. 2) of the vehicle 2 based on, for example, the speed of the vehicle 2 before braking and information on the road surface.

  The determination unit 13 determines whether the preceding vehicle and the following vehicle enter the range of the braking distance D1 to the vehicle 2. In the present embodiment, the determination unit 13 determines that, for example, the following vehicle 101 enters the range of the braking distance D1 with respect to the vehicle 2. The entry of the following vehicle 101 into the range of the braking distance D1 with respect to the vehicle 2 is determined based on information from the photographing unit 31 (vehicle-mounted camera) or the sensor unit 4, for example.

  More specifically, the determination unit 13 analyzes, for example, a captured image of the imaging unit 31 and detects entry of the following vehicle 101 into the range of the braking distance D1 with respect to the vehicle 2. Further, for example, the determination unit 13 detects the entry of the following vehicle 101 into the range of the braking distance D1 for the vehicle 2 based on information from an obstacle sensor or the like of the sensor unit 4. Furthermore, the determination unit 13 determines whether or not the following vehicle 101 has stayed within the range of the braking distance D1 for the vehicle 2 for a first predetermined period. The first predetermined period is arbitrarily set in advance and stored in the storage unit 15 or the like.

  The communication unit 14 outputs a notification signal related to the start of recording of the video of the imaging unit 31 (vehicle-mounted camera). This notification signal is output when the following vehicle 101 stays within the range of the braking distance D1 to the vehicle 2 for the first predetermined period. In the present embodiment, there are two types of recording modes, for example, an automatic recording mode and a manual recording mode, for recording the video of the photographing unit 31.

  In the case of the automatic recording mode, the notification signal is output to, for example, the drive recorder 3 in the present embodiment. The communication unit 14 outputs, for example, a control signal for automatically starting video recording as a notification signal. Accordingly, the drive recorder 3 that has received the notification signal relating to the start of recording of the video of the imaging unit 31 immediately starts recording of the video of the imaging unit 31. According to this configuration, when a dangerous behavior of the following vehicle 101 with respect to the vehicle 2 is found, the dangerous behavior of the following vehicle 101 with respect to the vehicle 2 can be automatically recorded as a video.

  In the case of the manual recording mode, in the present embodiment, the notification signal is output to, for example, a display unit such as a navigation device and a speaker. The communication unit 14 outputs, for example, a signal requesting the user to give an instruction as to whether or not to start recording a video, as a notification signal. As a result, a display relating to the user's request for an instruction as to whether or not to start recording the video of the imaging unit 31 is displayed on the display unit, and the request for the instruction is notified from the speaker by sound. Then, the communication unit 14 receives an input of a signal related to the instruction by the user. This input is received, for example, via a touch panel provided on the display unit, a vehicle-mounted microphone included in a navigation device or the like.

  The storage unit 15 is a nonvolatile memory such as a flash memory, for example, and stores various types of information. The storage unit 15 stores, for example, a program as firmware and various data used by the program. Further, the storage unit 15 stores various data necessary for the information acquisition unit 11, the derivation unit 12, the determination unit 13, and the communication unit 14 to execute processing.

<1-3. Operation of vehicle monitoring device>
<1-3-1. Automatic recording mode>
FIG. 3 is a flowchart illustrating an operation example of the vehicle monitoring device 1 according to the first embodiment during automatic recording. As an example of the operation of the vehicle monitoring device 1 of the first embodiment, of the processing in a case where a dangerous behavior that the following vehicle 101 enters the braking distance D1 of the vehicle 2 is found, the automatic recording mode in FIG. This will be described with reference to FIG. 2 while referring to a processing flow. In the present embodiment, as described above, the other vehicle exhibiting a dangerous behavior with respect to the vehicle 2 (own vehicle) is described as the following vehicle 101, but the same processing is performed even if the other vehicle is the preceding vehicle. Is performed.

  The vehicle monitoring device 1 is activated, for example, by turning on the ignition of the vehicle 2 and starts the processing flow of FIG. 3 (“start” in FIG. 3). The following processing flow is repeatedly executed while the vehicle monitoring device 1 is operating.

  Subsequently, the vehicle monitoring device 1 acquires the information on the vehicle 2 and the surroundings of the vehicle 2 (Step S101). The vehicle monitoring device 1 uses, for example, an image captured by the image capturing unit 31 of the drive recorder 3 and an obstacle sensor of the sensor unit 4 via the information acquisition unit 11 to obtain a preceding vehicle and a following vehicle of the traveling vehicle 2. In addition, information on the state of the vehicle 2 and the surrounding environment is acquired.

  Next, it is determined whether a preceding vehicle has been detected in front of the running vehicle 2 and whether a subsequent vehicle has been detected behind (step S102). The information acquiring unit 11 detects the presence of a preceding vehicle and a following vehicle of the running vehicle 2 based on, for example, a captured image of the capturing unit 31 and information from an obstacle sensor. When the preceding vehicle and the following vehicle of the traveling vehicle 2 are not detected (No in step S102), the processing flow illustrated in FIG. 3 is ended.

  If the following vehicle 101 is detected behind the traveling vehicle 2 (Yes in step S102), the braking distance D1 of the vehicle 2 is derived (step S103). The deriving unit 12 derives a braking distance D1 of the vehicle 2 based on the speed of the vehicle 2 before braking and information on a road surface.

  Next, entry of the following vehicle 101 into the range of the braking distance D1 to the vehicle 2 is determined (step S104). The determination unit 13 determines whether the following vehicle 101 enters the range of the braking distance D1 with respect to the vehicle 2 based on, for example, an image captured by the imaging unit 31 and information from an obstacle sensor. If the following vehicle 101 has not entered the range of the braking distance D1 (No in step S104), the processing flow illustrated in FIG. 3 ends.

  When the following vehicle 101 enters the range of the braking distance D1 (Yes in step S104), it is determined whether or not the following vehicle 101 stays within the range of the braking distance D1 for the first predetermined period (step S105). ). When the stay of the following vehicle 101 within the range of the braking distance D1 has not reached the first predetermined period (No in step S105), the processing flow illustrated in FIG. 3 ends.

  Although not shown, when the following vehicle 101 disappears from behind the vehicle 2, the processing flow illustrated in FIG. 3 ends.

  If the stay of the following vehicle 101 within the range of the braking distance D1 has passed the first predetermined period (Yes in step S105), a notification signal relating to the start of recording of the video of the imaging unit 31 is output (step S106). . The communication unit 14 outputs, as a notification signal, a control signal that causes the drive recorder 3 to automatically start recording a video.

  According to the configuration of the vehicle monitoring device 1, when the following vehicle 101 (other vehicle) stays within the range of the braking distance D1 to the vehicle 2 (own vehicle) for the first predetermined period, the photographing unit of the drive recorder 3 Recording of the 31 videos can be automatically started. That is, the dangerous behavior of the following vehicle 101 with respect to the vehicle 2 can be recorded as a video. Therefore, it is possible to automatically determine the sign of the driving and automatically record the sign as an image.

  In the case of the automatic recording mode, the recording is automatically performed when the sign of the driving operation is determined, so that the driver does not need to operate the drive recorder 3. Thus, the driver (user) can concentrate on driving the vehicle 2. Further, even during automatic driving, recording is automatically performed when a sign of fluttering driving is determined.

  Further, with respect to the recording at the time of collision, which is the original function of the drive recorder 3, the recording can be automatically started when the sign of the fluttering operation is determined. This eliminates the need to constantly record video. Therefore, the amount of access to the storage unit 32 of the drive recorder 3 can be reduced, and the life of the storage unit 32 and the reduction in power consumption can be improved. In addition, regarding the recording at the time of collision, which is the primary function of the drive recorder 3, it is possible to automatically save the recorded video when the sign of the fluttering operation is determined during the continuous recording.

  In the processing flow of FIG. 3, with respect to the determination of the entry of the following vehicle 101 into the range of the braking distance D1 of the vehicle 2 (step S104), the following vehicle 101 enters and exits the range of the braking distance D1. May be repeated. Considering the case where entry and exit are repeated in this way, even if the following vehicle 101 exits from within the range of the braking distance D1, monitoring of the swaying operation may be continued.

  For example, even if the following vehicle 101 leaves the range of the braking distance D1 of the vehicle 2, the determination unit 13 does not discard the timing information indicating whether or not the first predetermined period has been reached, and temporarily stops timing. When the following vehicle 101 enters the range of the braking distance D1 of the vehicle 2 again, the determination unit 13 restarts the timing of whether or not the first predetermined period has been reached from the previously paused time. When the following vehicle 101 repeatedly enters and leaves the range of the braking distance D1, the determination unit 13 repeats the temporary stop and the restart of the timing of whether or not the first predetermined period has been reached. When the following vehicle 101 repeatedly enters and exits the range of the braking distance D1 with respect to the vehicle 2 and accumulates and reaches the first predetermined period, the determination unit 13 determines that the following range is within the range of the braking distance D1. Is determined to have stayed for the first predetermined period.

  According to this configuration, a situation in which the following vehicle 101 moves back and forth near the boundary of the range of the braking distance D1 to the vehicle 2 can also be determined to be a sign of the humbling operation. That is, the dangerous behavior of the following vehicle 101 approaching or leaving the vehicle 2 can be recorded as an image.

<1-3-2. Manual recording mode>
FIG. 4 is a flowchart illustrating an operation example of the vehicle monitoring device 1 according to the first embodiment at the time of manual recording. As an operation example of the vehicle monitoring device 1 of the first embodiment, in the manual recording mode of FIG. 4, in the processing when a dangerous behavior that the following vehicle 101 enters the braking distance D1 of the vehicle 2 is found. This will be described with reference to FIGS. 5 and 6 while referring to the processing flow. FIG. 5 is a diagram for explaining the relationship between the braking distance and the determination distance. FIG. 6 is a diagram illustrating a situation related to the approach of another vehicle within the determination distance of the own vehicle.

  The vehicle monitoring device 1 is started, for example, by turning on the ignition of the vehicle 2 and starts the processing flow of FIG. 4 (“start” in FIG. 4). The following processing flow is repeatedly executed while the vehicle monitoring device 1 is operating.

  Next, it is determined that the following vehicle 101 enters the range of the braking distance D1 with respect to the vehicle 2, and it is further determined that the following vehicle 101 stays within the range of the braking distance D1 for the first predetermined period (step). S201). Step S201 is the same as step S101 to step S105 in FIG. 3 used in the description of the automatic recording mode described above, and thus the description is omitted.

  Next, it is determined whether or not the determination that the following vehicle 101 has stayed within the range of the braking distance D1 for a predetermined period is the predetermined n-th time (step S202). The number of times of determination “n” is arbitrarily set in advance and stored in the storage unit 15 or the like.

  If the determination that the succeeding vehicle 101 has stayed within the range of the braking distance D1 for the predetermined period is less than the n-th time (No in step S202), a notification signal relating to the start of video recording of the image capturing unit 31 is output (step S202). S203). The communication unit 14 outputs, as a notification signal, a signal requesting an instruction as to whether or not to start recording video. As a result, a display relating to the user's request for an instruction as to whether or not to start recording the video of the imaging unit 31 is displayed on the display unit, and the request for the instruction is notified from the speaker by sound. Then, the communication unit 14 receives an input of a signal related to the instruction by the user.

  Next, it is determined whether an instruction to start recording has been input by the user (step S204). When the user's instruction indicates that the recording can be started (Yes in step S204), the communication unit 14 outputs a control signal for starting the video recording to the drive recorder 3 (step S205).

  If the user's instruction is to start recording (No in step S204), a determination distance D2 (see FIG. 5) is set for the approach of the following vehicle 101 to the vehicle 2 (step S206). The determination distance D2 is shorter than the braking distance D1 of the vehicle 2, and is derived based on the braking distance D1. Then, the processing flow illustrated in FIG. 4 ends.

  Next, when the processing flow illustrated in FIG. 4 is started again, in step S201, it is determined that the following vehicle 101 enters the range of the braking distance D1 to the vehicle 2, specifically, the range of the determination distance D2. Further, it is determined that the following vehicle 101 has stayed within the range of the determination distance D2 for the second predetermined period (see FIG. 6). The second predetermined period may be the same as or different from the first predetermined period, and is set in advance and stored in the storage unit 15 or the like.

  Next, if the determination that the succeeding vehicle 101 has stayed for the predetermined period within the range of the braking distance D1 is less than the n-th time (No in step S202), the communication unit 14 determines whether to start video recording. A signal requesting an instruction from the user is output (step S203). Subsequently, when the user's instruction is whether or not to start recording (No in step S204), the determination range is further reduced to determine whether or not the following vehicle 101 will stay within the range of the braking distance D1 for a predetermined period. Repeated.

  Then, when the determination that the succeeding vehicle 101 has stayed within the range of the braking distance D1 for the predetermined period has reached the n-th time (Yes in step S202), the communication unit 14 controls the drive recorder 3 to start video recording. A signal is output (step S205).

  According to the configuration of the vehicle monitoring device 1 described above, even when the following vehicle 101 stays within the range of the braking distance D1 to the vehicle 2 for the first predetermined period, the image of the photographing unit 31 is given based on the user's instruction. Can not be automatically recorded. That is, it is possible to record the video of the photographing unit 31 after determining by the user whether or not the behavior of the following vehicle 101 is a fluttering operation. That is, it is possible to more appropriately record the dangerous behavior of the following vehicle 101 with respect to the vehicle 2 as an image.

  The average value of the number of instructions from the reception of the instruction to start or stop recording a video to the reception of the instruction to start recording a video from the user may be calculated and stored in the storage unit 15 or the like. The calculation of the average value of the number of instructions is performed during a predetermined period arbitrarily set by the user. After that, when a dangerous behavior of another vehicle with respect to the own vehicle is found, when the user's instruction reaches the average value, the communication unit 14 automatically starts recording a video as a notification signal. A signal may be output.

  According to this configuration, it is possible to automatically record the image of the photographing unit 31 in consideration of how the user determines whether the behavior of the following vehicle 101 is a fluttering operation. That is, it is possible to appropriately and automatically record a dangerous behavior of the following vehicle 101 with respect to the vehicle 2 as an image.

<2. Second Embodiment>
<2-1. Configuration of vehicle monitoring device>
FIG. 7 is a diagram illustrating a configuration of the vehicle monitoring device 1 according to the second embodiment. Since the basic configuration of the vehicle monitoring device 1 according to the second embodiment is the same as that of the first embodiment described above, the configuration different from that of the first embodiment will be described below. Detailed description of the common configuration will be omitted.

  Regarding the vehicle monitoring device 1 of the second embodiment, the vehicle 2 includes a drive recorder 3, a sensor unit 4, an automatic driving control ECU 5, and a microphone 6, as shown in FIG.

  The microphone 6 is provided for collecting sounds around the vehicle. In the present embodiment, the microphone 6 is installed, for example, at the rear of the vehicle 2 in order to collect sound in the rear direction of the vehicle 2.

<2-2. Details of vehicle monitoring device>
The information acquisition unit 11 acquires an image captured by the imaging unit 31 (vehicle-mounted camera). Further, the information acquisition unit 11 acquires the sound behind the vehicle 2 collected by the microphone 6.

  The determination unit 13 determines a specific behavior in which the preceding vehicle and the following vehicle run off the lane based on the image captured by the imaging unit 31. In the present embodiment, the determination unit 13 determines, for example, a run-off of the following vehicle 101 from the lane based on the image captured by the image capturing unit 31. In addition, the determination unit 13 determines a specific behavior of receiving passing from the following vehicle 101 based on the captured image of the capturing unit 31. Further, the determination unit 13 determines a specific behavior of receiving horn from the following vehicle 101 based on the voice collected by the microphone 6.

  In this document, a dangerous behavior of a preceding vehicle and a following vehicle (another vehicle) with respect to a vehicle (own vehicle), and a sign of fueling driving may be referred to as “specific behavior”. The specific behavior includes the behavior of the preceding vehicle and the following vehicle entering the range of the braking distance for the vehicle described in the first embodiment. The specific behavior also includes the behavior of a preceding vehicle and a following vehicle described in a modified example of the vehicle monitoring device 1 described later.

  The communication unit 14 outputs a notification signal related to the start of recording of the video of the imaging unit 31 (vehicle-mounted camera). The output of the notification signal is performed when the specific behavior of passing from the lane of the following vehicle 101 and passing from the following vehicle 101 and horning from the following vehicle 101 is repeated a first predetermined number of times within a predetermined time. . The certain time and the first predetermined number are set arbitrarily in advance and stored in the storage unit 15 or the like.

<2-3. Operation of vehicle monitoring device>
<2-3-1. Automatic recording mode>
FIG. 8 is a flowchart illustrating an operation example of the vehicle monitoring device 1 according to the second embodiment during automatic recording. As an operation example of the vehicle monitoring device 1 according to the second embodiment, of the processing when the specific behavior described above is observed from the following vehicle 101 with respect to the vehicle 2, the automatic recording mode is described with reference to the processing flow of FIG. I will explain.

  The vehicle monitoring device 1 is activated, for example, by turning on the ignition of the vehicle 2 and starts the processing flow of FIG. 8 (“start” in FIG. 8). The following processing flow is repeatedly executed while the vehicle monitoring device 1 is operating.

  Subsequently, the vehicle monitoring device 1 acquires information about the vehicle 2 and the surroundings of the vehicle 2 (Step S301). The information acquisition unit 11 acquires information on a preceding vehicle and a following vehicle of the running vehicle 2, and information on the state and the surrounding environment of the vehicle 2.

  Next, it is determined whether a following vehicle is detected behind the traveling vehicle 2 (step S302). The information acquisition unit 11 detects that there is a following vehicle of the running vehicle 2 based on, for example, a captured image of the imaging unit 31 and information from an obstacle sensor. When the following vehicle of the running vehicle 2 is not detected (No in step S302), the processing flow illustrated in FIG. 8 is ended.

  If the following vehicle 101 is detected behind the running vehicle 2 (Yes in step S302), it is determined whether or not there is a specific behavior of the following vehicle 101 with respect to the vehicle 2 (step S303). The determination unit 13 determines the specific behavior of the vehicle running off the lane of the following vehicle 101, passing from the following vehicle 101, and horning from the following vehicle 101, for example, based on the image captured by the imaging unit 31 and the voice collected by the microphone 6. I do. If there is no specific behavior of the following vehicle 101 (No in step S303), the processing flow illustrated in FIG.

  If there is a specific behavior of the following vehicle 101 (Yes in step S303), it is determined whether the specific behavior of the following vehicle 101 has been repeated a first predetermined number of times within a predetermined time (step S304). If the specific behavior of the succeeding vehicle 101 has not reached the first predetermined number of times within the fixed time (No in step S304), the processing flow illustrated in FIG. 8 ends.

  When the specific behavior of the following vehicle 101 is repeated a first predetermined number of times within a certain time (Yes in step S304), the communication unit 14 controls the drive recorder 3 to automatically start recording a video as a notification signal. A signal is output (step S305).

  According to the configuration of the vehicle monitoring device 1 described above, when the specific behavior of the following vehicle 101 with respect to the vehicle 2 is repeated a first predetermined number of times within a predetermined time, the video recording of the image capturing unit 31 of the drive recorder 3 is performed. Can be started automatically. That is, it is possible to record the dangerous behavior of the vehicle 2 protruding from the lane of the following vehicle 101 from the lane, passing from the following vehicle 101 and horning from the following vehicle 101 as a video. Therefore, it is possible to automatically determine the sign of the driving and automatically record the sign as an image.

  The specific behavior of the other vehicle with respect to the own vehicle may include, for example, the blinking of the brake lamp of the preceding vehicle, that is, the behavior of repeating the braking operation by the preceding vehicle. Further, another example of the specific behavior of the other vehicle with respect to the own vehicle will be described in a modified example of the vehicle monitoring device 1 described later.

<2-3-2. Manual recording mode>
FIG. 9 is a flowchart illustrating an operation example of the vehicle monitoring device 1 according to the second embodiment at the time of manual recording. As an operation example of the vehicle monitoring device 1 according to the second embodiment, of the processing when the specific behavior described above is observed from the following vehicle 101 with respect to the vehicle 2, regarding the manual recording mode, refer to the processing flow of FIG. I will explain it.

  The vehicle monitoring device 1 is activated by, for example, turning on the ignition of the vehicle 2 and starts the processing flow of FIG. 9 (“start” in FIG. 9). The following processing flow is repeatedly executed while the vehicle monitoring device 1 is operating.

  Next, it is determined whether or not there is a specific behavior of the following vehicle 101 with respect to the vehicle 2, and it is further determined that the specific behavior of the following vehicle 101 has been repeated a first predetermined number of times (step S401). Step S401 is the same as step S301 to step S304 in FIG. 8 used in the description of the automatic recording mode, and thus the description is omitted.

  Next, it is determined whether or not the determination that the specific behavior of the following vehicle 101 with respect to the vehicle 2 has been repeated a predetermined number of times within a predetermined time is a predetermined m-th time (step S402). The number of determinations “m” is arbitrarily set in advance and stored in the storage unit 15 or the like.

  If the determination that the specific behavior of the following vehicle 101 has been repeated a predetermined number of times within a certain time period is less than the m-th time (No in step S402), a notification signal related to the start of video recording of the imaging unit 31 is output ( Step S403). The communication unit 14 outputs, as a notification signal, a signal requesting an instruction as to whether or not to start recording video. As a result, a display relating to the user's request for an instruction as to whether or not to start recording the video of the imaging unit 31 is displayed on the display unit, and the request for the instruction is notified from the speaker by sound. Then, the communication unit 14 receives an input of a signal related to the instruction by the user.

  Next, it is determined whether or not an instruction to start recording has been input by the user (step S404). If the user's instruction indicates that recording can be started (Yes in step S404), the communication unit 14 outputs a control signal to start recording of video to the drive recorder 3 (step S405).

  If the user's instruction is to start recording (No in step S404), the processing flow illustrated in FIG. 9 ends. Next, when the processing flow shown in FIG. 9 is started again, it is determined whether or not there is a specific behavior of the following vehicle 101 with respect to the vehicle 2 in step S401. Is determined to have been repeated a second predetermined number of times. The second predetermined number may be the same as or different from the first predetermined number, and is set in advance and stored in the storage unit 15 or the like.

  Next, if the determination that the specific behavior of the following vehicle 101 has been repeated a predetermined number of times within a certain time period is less than the m-th time (No in step S402), the communication unit 14 determines whether to start recording the video. A signal requesting the user to issue the instruction is output (step S403). Subsequently, when the user's instruction is whether or not to start recording (No in step S404), the determination as to whether or not the specific behavior of the following vehicle 101 has been repeated a predetermined number of times within a predetermined time is repeated.

  Then, when it is determined that the specific behavior of the following vehicle 101 has been repeated a predetermined number of times within a certain period of time (Yes in step S402), the communication unit 14 causes the drive recorder 3 to start recording an image. A control signal is output (step S405).

  According to the configuration of the vehicle monitoring device 1 described above, even when the specific behavior of the following vehicle 101 with respect to the vehicle 2 is repeated the first predetermined number of times within the fixed time, the photographing unit 31 is controlled based on the user's instruction. Video can be prevented from being automatically recorded. That is, it is possible to record the video of the photographing unit 31 after determining by the user whether or not the behavior of the following vehicle 101 is a fluttering operation. That is, it is possible to more appropriately record the dangerous behavior of the following vehicle 101 with respect to the vehicle 2 as an image.

<3. Modification>
<3-1. Vehicle Monitoring Device of Modification 1>
A plurality of types of staying within the range of the braking distance of the own vehicle by the preceding vehicle and the following vehicle and the above-described specific behavior may occur in a short period of time. For this reason, in the vehicle monitoring device 1 of the first modification, the determination unit 13 determines that a plurality of types of staying within the braking distance of the own vehicle by the preceding vehicle and the following vehicle and the specific behavior are determined by the third predetermined condition. When the determination is made within the period, the communication unit 14 outputs, as a notification signal, a control signal for automatically starting video recording of the imaging unit 31.

  Specifically, in the present embodiment, the determination unit 13 determines that the following vehicle 101 stays within the range of the braking distance D1 to the vehicle 2, protrudes from the lane of the following vehicle 101, and passes from the following vehicle 101. And the horn from the following vehicle 101 are determined. Further, the determination unit 13 determines whether at least two of the behaviors of the following vehicle 101 have occurred within the third predetermined period. The third predetermined period is arbitrarily set in advance and stored in the storage unit 15 or the like. The communication unit 14 outputs a control signal that causes the drive recorder 3 to automatically start recording video when at least two of these behaviors of the following vehicle 101 occur within the third predetermined period.

  According to this configuration, even if the stay of the following vehicle 101 within the range of the braking distance D1 has not reached the predetermined period, or even if the specific behavior of the following vehicle 101 with respect to the vehicle 2 has not reached the predetermined number of times, The recording of the video of the imaging unit 31 can be started. Thereby, when it is highly likely that the behavior of the following vehicle 101 can be determined to be the driving operation, it is possible to quickly record the dangerous behavior of the following vehicle 101 as a video.

  Further, as another method for automatically starting the recording of the video of the photographing unit 31 based on a plurality of types of behaviors of the following vehicle 101, a method described below can be applied.

  FIG. 10 is an explanatory diagram of a method of determining the behavior of another vehicle by the vehicle monitoring device 1 of the first modification. In the three-dimensional graph shown in FIG. 10, the horizontal axis is the distance between the vehicle and the following vehicle 101, the vertical axis is the number of protruding lanes of the following vehicle 101, and the depth axis is the following vehicle within the braking distance D1. 101 is the stay time. It is assumed that the vehicle speed of the vehicle 2 is 60 km / h and the braking distance D1 is 27 m.

  The solid drawn in FIG. 10 represents a range connecting the respective allowable limits of the three types of behavior of the following vehicle 101. That is, for example, the inter-vehicle distance to the following vehicle 101 can be 18 m or more. For example, the number of protruding lanes of the following vehicle 101 can be up to two times. For example, the staying time of the following vehicle 101 within the range of the braking distance D1 is Within 2 seconds is acceptable. Then, when each of the three types of behavior of the following vehicle 101 exceeds the value set by calculating the volume of the solid drawn in FIG. 10, the recording of the video of the imaging unit 31 is automatically started. In this way, the dangerous behavior of the following vehicle 101 with respect to the vehicle 2 can be recorded as a video.

  In addition, the same one of the preceding vehicle and the following vehicle staying within the range of the braking distance of the own vehicle and the above specific behavior may be repeated a plurality of times. For this reason, in the vehicle monitoring device 1 of the first modification, the determination unit 13 determines whether the preceding vehicle and the following vehicle stay within the range of the braking distance of the own vehicle and the same one of the specific behavior described above. Is determined to have been repeated the third predetermined number of times, the communication unit 14 determines the position of the vehicle 2 with the image of the photographing unit 31 or the information on the preceding vehicle and the following vehicle detected based on the image. Report to the designated report destination.

  Specifically, in the present embodiment, the determination unit 13 determines that the following vehicle 101 stays within the range of the braking distance D1 to the vehicle 2, protrudes from the lane of the following vehicle 101, and passes from the following vehicle 101. It is determined that one of the behaviors of the following and the horn from the following vehicle 101 is repeated a third predetermined number of times. The third predetermined number is arbitrarily set in advance and stored in the storage unit 15 or the like. In the present embodiment, the information on the preceding vehicle and the following vehicle detected based on the video is, for example, information such as the number, vehicle type, and color of the following vehicle 101. The predetermined report destination corresponds to, for example, a police agency.

  According to this configuration, when dangerous behavior of the following vehicle 101 with respect to the vehicle 2 is relentlessly repeated, the image and unique information of the following vehicle 101 and the position information of the vehicle 2 can be sent to a police agency or the like. Thereby, a police vehicle or the like can be quickly dispatched to a site where the dangerous behavior of the following vehicle 101 is being performed on the vehicle 2.

<3-2. Vehicle Monitoring Device of Modification 2>
FIG. 11 is an explanatory diagram of a specific behavior of another vehicle determined by the vehicle monitoring device 1 of the second modification. The determining unit 13 determines a specific behavior in which the vehicle speeds of the preceding vehicle and the following vehicle move up and down based on the captured image of the capturing unit 31 or information from the sensor unit 4. That is, the determination unit 13 determines, as the specific behavior, that the preceding vehicle and the following vehicle approach and separate from the vehicle 2 (own vehicle) in the forward and backward directions.

  The communication unit 14 outputs a notification signal relating to the start of recording of the video of the imaging unit 31. This notification signal is output when the specific behavior that the vehicle speed of the preceding vehicle and the following vehicle moves up and down is repeated a predetermined number of times within a predetermined time. For example, when the up and down movements of the vehicle speed of the preceding vehicle and the following vehicle are repeated a predetermined number of times within a certain time from time t0 to time t1 shown in FIG. Is output.

  According to this configuration, when the specific behavior that the vehicle speeds of the preceding vehicle and the following vehicle move up and down is repeated a predetermined number of times within a predetermined time, the recording of the image of the imaging unit 31 of the drive recorder 3 is automatically performed. You can start. That is, it is possible to record a dangerous behavior in which the vehicle speed of the preceding vehicle and the following vehicle moves up and down as an image. Therefore, it is possible to automatically determine the sign of the driving and automatically record the sign as an image.

<3-3. Vehicle Monitoring Device of Modification 3>
FIG. 12 is an explanatory diagram of a specific behavior of another vehicle determined by the vehicle monitoring device 1 of the third modification. The determination unit 13 determines a specific behavior that the preceding vehicle and the following vehicle change lanes to the same lane as the vehicle 2 (own vehicle) based on the captured image of the capturing unit 31 or information from the sensor unit 4.

  Specifically, for example, when the vehicle 2 changes lanes as indicated by an arrow Ca1 shown in FIG. 12, the determination unit 13 determines that the following vehicle 101 changes lanes to the same lane as the vehicle 2 as indicated by an arrow Cb1. Is determined as a specific behavior. Subsequently, when the vehicle 2 changes lanes as indicated by an arrow Ca2, the determination unit 13 determines that the following vehicle 101 changes lanes to the same lane as the vehicle 2 as indicated by an arrow Cb2 as a specific behavior. . When the other vehicle is the preceding vehicle, the determining unit 13 determines the behavior of changing the lane so that the preceding vehicle does not allow the own vehicle to move forward as the specific behavior.

  The communication unit 14 outputs a notification signal relating to the start of recording of the video of the imaging unit 31. This notification signal is output when the specific behavior that the following vehicle 101 changes lanes to the same lane as the vehicle 2 is repeated a predetermined number of times within a predetermined time.

  According to this configuration, when the specific behavior that the preceding vehicle and the following vehicle change lanes to the same lane as the own vehicle is repeated a predetermined number of times within a predetermined time, the video recording of the image capturing unit 31 of the drive recorder 3 is performed. , Can be started automatically. That is, it is possible to record a dangerous behavior in which the preceding vehicle and the following vehicle change lanes following the lane change of the own vehicle as a video. Therefore, it is possible to automatically determine the sign of the driving and automatically record the sign as an image.

<3-4. Vehicle Monitoring Device of Modification 4>
FIG. 13 is an explanatory diagram (1) of a specific behavior of another vehicle determined by the vehicle monitoring device 1 of the fourth modification. FIG. 14 is an explanatory diagram (2) of the specific behavior of another vehicle determined by the vehicle monitoring device 1 of the fourth modification. The determination unit 13 is based on information from the obstacle sensor of the sensor unit 4 and immediately after the obstacle sensor detects the approach of another vehicle to the vehicle 2 (own vehicle), immediately before or after the vehicle 2. The specific behavior that the interruption is performed is determined.

  Specifically, as shown in FIG. 13, for example, when the other vehicle 102 approaches the right front of the vehicle 2 within a predetermined distance of the vehicle 2, the obstacle sensor detects the other vehicle 102. Immediately thereafter, as shown in FIG. 14, when an interruption by another vehicle 102 is performed in front of the vehicle 2, the determination unit 13 determines a series of these behaviors as specific behaviors.

  The communication unit 14 outputs a notification signal relating to the start of recording of the video of the imaging unit 31. As for the output of this notification signal, immediately after the obstacle sensor detects the approach of the other vehicle 102, the behavior that the interruption by the other vehicle 102 is performed in front of the vehicle 2 is determined as the specific behavior by the determination unit 13. Will be implemented if.

  According to this configuration, immediately after the obstacle sensor detects the approach of the other vehicle, when the specific behavior that the other vehicle is interrupted in front of or behind the own vehicle occurs, the imaging unit of the drive recorder 3 Recording of the 31 videos can be automatically started. That is, it is possible to record the dangerous behavior of forcibly approaching and interrupting by another vehicle as an image. Therefore, it is possible to automatically determine the sign of the driving and automatically record the sign as an image.

<5. Others>
Various technical features disclosed in the present specification can be variously modified without departing from the spirit of the technical creation in addition to the above-described embodiment. That is, the above embodiment is an example in all respects, and should not be considered as limiting. The technical scope of the present invention is described not by the description of the above-described embodiment but by the claims, and it should be understood that the meaning equivalent to the claims and all the modifications belonging to the scope are included. It is. Further, the above-described embodiments and modifications may be implemented in combination as far as possible.

  Note that the vehicle monitoring device 1 does not perform the above-described operation during traffic jams, at intersections, at signal waiting times, and at slow speeds.

  Further, in the above-described embodiment, various functions are realized as software by the arithmetic processing of the CPU according to the program. However, some of these functions are realized by an electrical hardware circuit. May be. Conversely, some of the functions realized by the hardware circuit may be realized by software.

DESCRIPTION OF SYMBOLS 1 Vehicle monitoring apparatus 2 Vehicle 3 Drive recorder 4 Sensor unit 6 Microphone 11 Information acquisition unit 12 Derivation unit 13 Judgment unit 14 Communication unit 15 Storage unit 31 Imaging unit 101 Subsequent vehicle 102 Other vehicle

Claims (11)

A vehicle monitoring device mounted on a vehicle having an on-vehicle camera and monitoring other vehicles around the running vehicle,
An information acquisition unit that acquires information related to a preceding vehicle and a following vehicle of the vehicle and a state and a surrounding environment of the vehicle,
A deriving unit that derives a braking distance of the vehicle based on a state and a surrounding environment of the vehicle,
A determination unit that determines the entry of the preceding vehicle and the following vehicle into the range of the braking distance for the vehicle,
When the preceding vehicle and the following vehicle stay within a range of the braking distance to the vehicle for a first predetermined period, a communication unit that outputs a notification signal related to a start of recording of an image of the vehicle-mounted camera,
A vehicle monitoring device comprising:   When the preceding vehicle and the following vehicle repeatedly enter and leave the vehicle within the range of the braking distance, the preceding vehicle and the following vehicle repeatedly accumulate and reach the first predetermined period. The vehicle monitoring device according to claim 1, wherein it is determined that the vehicle stays within the range of the first predetermined period. The information acquisition unit acquires a captured image captured by the vehicle-mounted camera,
The determination unit determines a specific behavior that the preceding vehicle and the following vehicle are out of the lane based on the captured image,
The vehicle monitoring device according to claim 1, wherein the communication unit outputs the notification signal when the specific behavior is repeated a first predetermined number of times within a predetermined time. The information acquisition unit acquires a captured image captured by the vehicle-mounted camera,
The determination unit determines a specific behavior of receiving passing from the following vehicle based on the captured image,
The vehicle monitoring device according to claim 1, wherein the communication unit outputs the notification signal when the specific behavior is repeated a first predetermined number of times within a predetermined time. The information acquisition unit acquires a sound behind the vehicle,
The determination unit determines a specific behavior of receiving horn from the following vehicle based on the voice,
The vehicle monitoring device according to claim 1, wherein the communication unit outputs the notification signal when the specific behavior is repeated a first predetermined number of times within a predetermined time.   The vehicle monitoring device according to claim 1, wherein the communication unit outputs a control signal for automatically starting recording of the video as the notification signal. The communication unit outputs a signal requesting an instruction as to whether or not to start recording the video as a notification signal to a user, and receives an input of a signal according to the instruction,
If the instruction is an instruction to start recording the video, a control signal to start recording the video is output via the communication unit,
When the instruction is an instruction to start or stop recording of the video, the determination unit causes the preceding vehicle and the following vehicle to stay within a predetermined determination distance shorter than the braking distance for the vehicle. 6. The communication unit according to claim 1, wherein the communication unit outputs the notification signal when the preceding vehicle and the following vehicle stay within a range of the determination distance with respect to the vehicle for a second predetermined period. A vehicle monitoring device according to any one of claims 1 to 3. The communication unit outputs a signal requesting an instruction as to whether or not to start recording the video as a notification signal to a user, and receives an input of a signal according to the instruction,
If the instruction is an instruction to start recording the video, a control signal to start recording the video is output via the communication unit,
When the instruction is an instruction of whether or not to start recording the video, and when the determination unit determines that the same specific behavior has been repeated a second predetermined number of times within a fixed time, the communication unit The vehicle monitoring device according to claim 3, wherein the notification signal is output. When a plurality of types of staying within the range of the braking distance by the preceding vehicle and the following vehicle and the specific behavior are determined by the determination unit within a third predetermined period,
The vehicle monitoring device according to claim 3, wherein the communication unit outputs a control signal for automatically starting recording of the video as the notification signal. After receiving the instruction from the user to start recording the video, the storage unit that stores an average value of the number of times of the instruction until receiving the instruction to start recording the video,
The vehicle monitoring according to claim 7 or 8, wherein when the instruction from the user reaches the average value, the communication unit outputs a control signal for automatically starting recording of the video as the notification signal. apparatus. The information acquisition unit acquires position information of the vehicle,
The determination unit has determined that the same one of the staying within the range of the braking distance by the preceding vehicle and the following vehicle and the specific behavior has been repeated a third predetermined number of times. In case,
The said communication part notifies the information regarding the said preceding vehicle and the following vehicle detected based on the said image or the said image, and the position of the said vehicle to a predetermined report destination, The any one of Claims 3-10. The vehicle monitoring device according to claim 1.

Images