JP7358053B2 - Violation detection device and violation detection method - Google Patents

Description

The present invention relates to a violation detection device and a violation detection method.

BACKGROUND ART Conventionally, a driving support device is known that detects a traffic rule violation caused by a driver's driving operation (for example, see Patent Document 1).

Japanese Patent Application Publication No. 2017-123007

However, in the above technology, violation of traffic rules is detected by acquiring information obtained by a surrounding monitoring ECU, a vehicle control ECU, etc., and the process for detecting violation of traffic rules may become complicated.

The present invention has been made in view of the above, and an object of the present invention is to provide a violation detection device and a violation detection method that easily detect traffic rule violations.

A violation detection device according to one aspect of the embodiment includes an acquisition section, a calculation section, and a detection section. The acquisition unit acquires vehicle position information. The calculation unit calculates the vehicle speed and the traveling direction of the vehicle based on the position information. The detection unit detects a traffic rule violation based on location information, vehicle speed, traveling direction, and traffic rule information.

According to one aspect of the embodiment, traffic rule violations can be easily detected.

FIG. 1 is a diagram showing an overview of a violation detection method. FIG. 2 is a block diagram showing a configuration example of a violation detection device. FIG. 3 is a schematic diagram illustrating a determination as to whether a vehicle has violated a traffic rule. FIG. 4 is a flowchart illustrating the violation detection process. FIG. 5 is a block diagram showing a configuration example of a violation detection device according to a modification. FIG. 6 is a diagram showing an example of information stored in the violation information DB.

Hereinafter, a violation detection device and a violation detection method according to an embodiment will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to this embodiment.

First, an overview of the violation detection method according to the embodiment will be explained using FIG. FIG. 1 is a diagram showing an overview of a violation detection method. The violation detection method according to the embodiment is executed by the violation detection device 1. The violation detection device 1 is included in the violation detection system 100.

An overview of the violation detection system 100 will be explained. The violation detection system 100 includes an in-vehicle device 110, a user terminal 120, and a violation detection device 1.

The on-vehicle device 110 is mounted on the vehicle C. The in-vehicle device 110 is, for example, a drive recorder that includes an in-vehicle camera, various sensors such as an acceleration sensor, and a GPS (Global Positioning System) sensor, a storage device, a microcomputer, and the like. The in-vehicle device 110 acquires position information at predetermined intervals (for example, every second) and records the position information in association with the acquired time. The in-vehicle device 110 collectively transmits the recorded position information to the violation detection device 1 at predetermined intervals (for example, every 5 minutes).

The user terminal 120 is a terminal used by a data user, for example, an administrator who manages the vehicle C, and is, for example, a notebook PC (Personal Computer), a desktop PC, a tablet terminal, or a PDA (Personal Digital Assistant). It is.

The violation detection device 1 is configured, for example, as a cloud server that provides cloud services via a network N (see FIG. 2) such as the Internet or a mobile phone network. The violation detection device 1 detects a traffic rule violation based on the location information of the vehicle C acquired from the on-vehicle device 110 and provides the detection result to the user terminal 120. Traffic rules include temporary stops, speed limits, no parking, and one-way streets.

The violation detection device 1 determines whether or not a contracted vehicle C violates traffic rules based on location information obtained from an on-vehicle device 110 mounted on a vehicle C contracted by the user, for example, a commercial vehicle. , and notifies the user terminal 120 of the determination result.

Specifically, the violation detection device 1 acquires position information from each vehicle C (S1), and calculates the vehicle speed of each vehicle C and the traveling direction of each vehicle C based on the acquired position information (S2). .

The violation detection device 1 compares the position information, vehicle speed, and traveling direction of each vehicle C with traffic rule information (S3), and detects a traffic rule violation (S4).

The violation detection device 1 transmits the detection result, that is, information on violation of traffic rules, to the user terminal 120 (S5).

Note that the detection result is transmitted to the user terminal 120 at a predetermined timing. The predetermined timing is set in advance. For example, the predetermined timing is the timing at which a traffic rule violation is detected or the timing at which a preset time has elapsed. Furthermore, the predetermined timing may be the timing at which an instruction to send the detection results is received from the user terminal 120. That is, the detection result may be notified by push or pull notification.

In this manner, the violation detection device 1 calculates the vehicle speed and traveling direction based on the location information of the vehicle C, and detects a traffic rule violation based on the location information, vehicle speed, traveling direction, and traffic rule information. Thereby, the violation detection device 1 can easily detect traffic rule violations.

Next, the violation detection device 1 will be explained with reference to FIG. 2. FIG. 2 is a block diagram showing an example of the configuration of the violation detection device 1. As shown in FIG.

The violation detection device 1 includes a communication section 2, a storage section 3, and a control section 4.

The communication unit 2 is realized by, for example, a NIC (Network Interface Card). The communication unit 2 is connected to the network N by wire or wirelessly, and transmits and receives information (signals) to and from the in-vehicle device 110 and the user terminal 120 via the network N.

The communication unit 2 receives the position information recorded by the in-vehicle device 110 at predetermined intervals (eg, 1 second intervals) and the time at which the position information was recorded. The communication unit 2 also receives an image (hereinafter referred to as a "violation image") taken by the in-vehicle device 110 when the vehicle violates a traffic rule, from a vehicle that is determined to have violated a traffic rule. Note that the violation images include images taken during a predetermined period including the location and time at which the traffic rule violation was determined. The communication unit 2 transmits traffic rule violation information to the user terminal 120 at a predetermined timing.

The storage unit 3 is realized by a semiconductor memory element such as a RAM (Random Access Memory) or a flash memory, or a storage device such as a hard disk or an optical disk.

The storage unit 3 includes a traffic rule DB10, a violation information DB11, and a violation image DB12.

In the traffic rule DB 10, traffic rules are stored in association with map information. The traffic rule DB 10 stores the traffic rule, the position where the traffic rule is provided, the section where the traffic rule is provided, and the traveling direction of the vehicle C in which the traffic rule is valid. In addition, since the violation detection device 1 includes the traffic rule DB 10, the on-vehicle device 110 can have a simple configuration, and the processing load on the on-vehicle device 110 can be reduced.

The violation information DB 11 stores information on traffic rule violations. The violation information DB 11 stores traffic rule violations and the violated traffic rules in a linked manner. Note that the violation information DB 11 may store traffic rule violations and information on violative vehicles that have violated the traffic rules in association with each other.

The violation image DB 12 stores violation images taken by an on-vehicle device 110 mounted on a violation vehicle that violates a traffic rule. Note that the violation image is stored in association with traffic rule violation information. In addition, the violation image DB 12 may store the violation image and the information of the violation vehicle that has committed the violation together in a linked manner.

The control unit 4 is a controller, and for example, various programs stored in a storage device inside the storage unit 3 use the RAM as a work area by a CPU (Central Processing Unit) or an MPU (Micro Processing Unit). This is achieved through execution. Further, the control unit 4 can be realized by, for example, an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).

The control unit 4 includes an acquisition unit 20, a calculation unit 21, a determination unit 22, a detection unit 23, and an instruction unit 24. Note that the acquisition unit 20, the calculation unit 21, the determination unit 22, the detection unit 23, and the instruction unit 24 may be integrated or divided into a plurality of units.

The acquisition unit 20 acquires position information of the vehicle C from the in-vehicle device 110 via the communication unit 2 . Further, the acquisition unit 20 acquires a violation image via the communication unit 2 when a traffic rule violation is detected.

The calculation unit 21 calculates the vehicle speed and the traveling direction based on the acquired position information of the vehicle C. The calculation unit 21 calculates the vehicle speed and the traveling direction based on the change in the time when the position information was recorded and the amount of change in the position information. For example, very simply, consider a vector that connects two pieces of position information with different recorded times, take the direction of the vector as the direction of travel, and the length of the vector as the travel distance.You can get the vehicle speed by dividing the travel distance by the difference in recording time. . As described above, the position information may be obtained by approximation using the least squares method or the like from position information of multiple points instead of two points.

Furthermore, since position information often contains errors, the errors may first be corrected using a known method such as map matching to obtain a more accurate position, vehicle speed, and direction of travel.

The determining unit 22 determines whether the vehicle C has violated a traffic rule based on the vehicle C's position information, vehicle speed, traveling direction, and traffic rule information. In other words, the determining unit 22 determines whether or not a violation of traffic rules has occurred in the acquired time-series position information. Note that the determination unit 22 determines for each vehicle C whether or not it has violated a traffic rule.

Specifically, the determination unit 22 reads the traffic rules corresponding to the position information of the vehicle C from the traffic rule DB 10. Then, the determining unit 22 compares the vehicle speed and traveling direction of the vehicle C calculated by the calculating unit 21 with traffic rules, and determines whether the vehicle C has violated the traffic rules.

For example, if the vehicle C is traveling as shown by the broken line in FIG. 3 and there is a traffic rule for stopping on the route of the recorded position information, the determination unit 22 determines the vehicle speed and traveling direction at the stopping position. Based on this, it is determined whether the vehicle C has made a temporary stop. FIG. 3 is a schematic diagram illustrating a determination as to whether vehicle C has violated a traffic rule.

Specifically, it is assumed that the following traffic rules are set for the intersection INT in the traffic rule DB 10, for example.

(a) A temporary stop is required when approaching the intersection INT from the south to the north. (b) A temporary stop is required when approaching the intersection INT from the north to the south.

Next, traffic rules are read out based on the position information of vehicle C. For example, when vehicle C passes intersection INT or enters a predetermined area around intersection INT, the above two traffic rules are read out.

In the enlarged view of FIG. 3, the position information of the vehicle C is shown as a point P. That is, as the vehicle speed increases, the distance between points P becomes longer, and as the vehicle speed decreases, the distance between points P becomes shorter. In the enlarged view of FIG. 4, the distance between points P is constant. That is, the speed of the vehicle C calculated by the calculation unit 21 is constant, and the traveling direction is from south to north.

In this case, the determination unit 22 makes a determination on the two read traffic rules. First, by referring to rule (a), it is determined that a temporary stop is necessary based on the direction of travel. Next, it is determined whether a temporary stop has been performed based on the vehicle speed. For example, a temporary stop is determined when the vehicle speed drops below a predetermined value before passing the intersection INT. In the example of FIG. 3, since the vehicle C has a constant speed before passing the intersection INT, it is determined that the vehicle C is not stopping temporarily. Therefore, it is determined that the position information acquired from vehicle C violates the traffic rule regarding rule (a), that is, the temporary stop at the intersection INT.

In addition, in the above explanation, the determination was made based on the location information of vehicle C, but the driving route such as the road information on which vehicle C is traveling is calculated based on the location information and the history of the location information, and the driving route is determined based on the driving route. The determination may be made based on the following. In this case, it is preferable that the traffic rule DB 10 also stores the traffic rule in association with the driving route.

For example, when a highway and a general road run parallel to each other, it may be difficult to determine which road the vehicle is traveling on because position information alone contains errors. In this case, there is a possibility that the traffic rules corresponding to the expressway will be read even though the vehicle is driving on a general road, and the vehicle will be mistakenly determined to be overspeeding.

Therefore, the driving route is calculated based on the location information, the history of the location information, and the like. As mentioned above, if it is difficult to determine the driving route using position information alone, the driving route may be calculated by map matching based on the previous and subsequent driving history, for example. In the case of expressways, toll gate passing information, speed information obtained from previous and subsequent position information, etc. may also be used. There are various methods for determining the driving route, and it is advisable to select one as appropriate.

By linking the driving route and traffic rules instead of location information in this way, it is possible to suppress the possibility of erroneous determination when there is a possibility that an incorrect traffic rule may be read based on location information alone.

Further, the determining unit 22 changes the time required to determine that a traffic rule violation has occurred, depending on the type of traffic rule. For example, when determining a violation of the speed regulation, the determination unit 22 determines that the speed regulation has been violated if the state in which the speed limit is exceeded is longer than a predetermined determination time set in advance. As a result, it is possible to suppress the possibility that a violation of traffic rules is determined due to temporary variations or errors in vehicle speed, etc.

Further, depending on the type of traffic rule, the determination unit 22 determines an ON threshold value for determining a traffic rule violation from a state that is not a traffic violation, and an ON threshold for determining that a traffic violation is not a traffic violation. The OFF threshold value may be changed. For example, in the case of speed regulation, the ON threshold may be set slightly higher than the speed limit, and the OFF threshold may be set to the speed limit. As a result, it is possible to suppress the possibility that a violation of traffic rules is determined due to temporary variations or errors in vehicle speed, etc.

Returning to FIG. 2, the detection unit 23 detects a traffic rule violation based on the determination result of the determination unit 22. That is, the detection unit 23 detects a traffic rule violation based on the position information, vehicle speed, traveling direction, and traffic rule information of the vehicle C.

The instruction unit 24 generates an image transmission signal based on the detection result in the detection unit 23. Specifically, the instruction unit 24 generates an image transmission instruction signal to the violating vehicle. The image transmission instruction signal is a signal for causing the in-vehicle device 110 to transmit the violating image. The generated image transmission instruction signal is transmitted to the in-vehicle device 110 via the communication unit 2.

The in-vehicle device 110 that has received the image transmission instruction signal transmits the violation image to the violation detection device 1.

Further, the instruction unit 24 generates a violation signal, which is a detection result regarding a traffic rule violation, at a predetermined timing. Specifically, the instruction unit 24 generates a violation signal regarding the violated traffic rule and the violation image. The generated violation signal is transmitted to the user terminal 120 via the communication unit 2. Note that the violation signal may also include information regarding the violation vehicle.

Next, violation detection processing according to the embodiment will be described with reference to FIG. 4. FIG. 4 is a flowchart illustrating the violation detection process. Note that the violation detection process is performed for each vehicle C.

The violation detection device 1 acquires position information of the vehicle C from the on-vehicle device 110 (S10). The violation detection device 1 calculates the vehicle speed and traveling direction based on the acquired position information (S11).

The violation detection device 1 determines whether the vehicle C violates a traffic rule based on the position information, vehicle speed, traveling direction, and traffic rule information of the vehicle C (S12).

If the vehicle C does not violate the traffic rules (S12: No), the violation detection device 1 determines whether a predetermined timing has arrived (S15).

When the vehicle C violates a traffic rule (S12: Yes), that is, when a traffic rule violation is detected, the violation detection device 1 generates an image transmission signal for the violating vehicle and transmits the image transmission signal. The information is transmitted to the in-vehicle device 110 of the violating vehicle (S13).

The violation detection device 1 acquires the violation image from the in-vehicle device 110 of the violating vehicle (S14). The obtained violation image is stored in the violation information DB 11 together with traffic rule violation information. Note that the violation image may be stored in the violation information DB 11 in association with information on the violation vehicle.

When the predetermined timing has come (S15: Yes), the violation detection device 1 generates a violation signal and transmits the generated violation signal to the user terminal 120 (S16). If the timing is not the predetermined timing (S15: No), the violation detection device 1 ends the current process.

The violation detection device 1 calculates the vehicle speed and traveling direction based on the location information of the vehicle C, and detects a traffic rule violation based on the location information, vehicle speed, traveling direction, and traffic rules.

Thereby, the violation detection device 1 can detect a traffic rule violation from the position information of the vehicle C, and can simplify the processing for detecting a traffic rule violation. That is, the violation detection device 1 can easily detect traffic rule violations.

Further, the violation detection device 1 can detect traffic rule violations without using an on-vehicle device that acquires high-performance images or an on-vehicle device that has an image recognition function for identifying types of traffic signs. Therefore, the violation detection device 1 can suppress the cost of the violation detection system 100.

Furthermore, a data user such as a manager of vehicle C can find traffic rule violations without viewing images taken by the on-vehicle device 110.

The violation detection device 1 acquires a violation image when detecting a traffic rule violation.

As a result, the data user only needs to check the violation image taken when the traffic rule was violated, and the time required to confirm the traffic rule violation can be shortened. That is, the data user can easily confirm traffic rule violations. Further, the violation detection device 1 can reduce the communication load on the network N because only the violation image is transmitted.

The violation detection device 1 according to the modification may further include a violation vehicle detection section that detects a violation vehicle that violates a traffic rule based on the detection result of the detection section 23. In other words, the violating vehicle detecting section detects the vehicle C as a violating vehicle when the detection result of the detecting section 23 satisfies a predetermined condition. The predetermined condition is, for example, when the detection unit 23 determines that the vehicle C violates the traffic rules even once, the vehicle C is detected as a violation vehicle. In addition to the above-mentioned conditions, conditions may be set such that different determination thresholds are set as weights for each traffic rule.

Thereby, the administrator can easily check which vehicles violate traffic rules among the vehicles C that he or she manages. Furthermore, by assigning weights to each traffic rule, the traffic rules that you want to detect can be adjusted as appropriate, and you can easily check which violation vehicles you want to focus on.

The violation detection device 1 according to the modification may acquire the location information of the vehicle C based on the location information of the driver's mobile phone.

Further, the violation detection device 1 according to the modification may include a driver information DB 13 in the storage unit 3, as shown in FIG. FIG. 5 is a block diagram showing a configuration example of a violation detection device 1 according to a modification.

The driver information DB 13 stores driver information such as the driver's name, driver's gender, and age.

The violation detection device 1 according to the modification generates a violation signal including information about the driver who violated the traffic rules, that is, the driver who violated the traffic rules, at a predetermined timing, and transmits it to the user terminal 120.

This allows data users to simultaneously obtain information on drivers who violate traffic rules.

Further, the violation detection device 1 according to the modification may store information on a driver who violates a traffic rule and the traffic rule violated by the driver in association with each other in the violation information DB 11 (storage unit 3). For example, as shown in FIG. 6, the violation detection device 1 according to the modification may accumulate and store the details of the violation and the number of traffic rule violations in association with driver information. FIG. 6 is a diagram showing an example of information stored in the violation information DB 11. In addition, in FIG. 6, "male", "female", etc. are displayed for explanation, but in reality, they are stored as individual IDs. Note that the violation detection device 1 according to the modification may store, for each driver, the traffic rules that the driver violated.

Thereby, the data user can obtain information summarizing the information of the driver who violated the traffic rules, the details of the violation, etc.

Further, the violation detection device 1 according to the modification may alert the driver based on the driver information and the violation information. For example, when the driver starts the vehicle C, the violation detection device according to the modified example calls attention to traffic rules that the driver is likely to violate based on driver information and violation information.

This allows the driver to recognize traffic rules that are likely to be violated. Therefore, the violation detection device 1 according to the modified example can suppress the occurrence of violations of traffic rules.

Further, the violation detection device 1 according to the modification may store the location where the traffic rule was violated and the traffic rule that was violated in association with each other. For example, the violation detection device 1 according to the modified example stores location information where a traffic rule violation was committed and violation information in association with each other.

As a result, data users can obtain information summarizing locations where traffic rules are likely to be violated and details of the violations.

Further, the violation detection device 1 according to the modification may alert the driver based on the violation information, the location where the traffic rule was violated, and the details of the violation. For example, the violation detection device 1 according to the modified example alerts the driver to the traffic rules when the vehicle C approaches a place where the traffic rules have been violated.

Thereby, the violation detection device 1 according to the modification can suppress the occurrence of violations of traffic regulations.

Further, the violation detection device 1 according to the modification may detect a vehicle C that has engaged in dangerous driving. For example, the violation detection device 1 according to the modification may detect the vehicle C that has engaged in dangerous driving using the detection unit 23. The violation detection device 1 according to the modified example acquires surrounding information such as inter-vehicle distance and relative speed between vehicles in front and behind and vehicles in adjacent lanes, which are calculated based on images taken by the on-vehicle device 110.

Then, the violation detection device 1 according to the modification determines a case where driving with a short inter-vehicle distance is continuously performed as dangerous driving, and detects dangerous driving.

At this time, it is preferable to store in the traffic rule DB 10 not only rules that violate traffic rules but also rules that cause dangerous driving. For example, an appropriate inter-vehicle distance on a road is set in the traffic rule DB 10 as a rule linked to a map. The determination unit 22 reads out the rules based on the position information of the vehicle C. Based on the position information and the inter-vehicle distance of the vehicle C, if the read rule is violated, for example, if the inter-vehicle distance of the vehicle C is smaller than the appropriate inter-vehicle distance according to the read rule, dangerous driving is determined.

Note that the violation detection device 1 according to the modified example may detect the vehicle C that has engaged in dangerous driving using a signal from a radar device that detects the presence or absence of obstacles such as other vehicles around the vehicle C. . The violation detection device 1 according to the modification transmits the detection result of dangerous driving to the user terminal 120 as a violation signal at a predetermined timing.

In the above description, the vehicle-mounted device 110 calculates the inter-vehicle distance from the image, but the vehicle-mounted device 110 may transmit the image and the violation detection device 1 may calculate the inter-vehicle distance from the image.

Thereby, the data user can easily confirm the vehicle C that has engaged in dangerous driving.

Although the violation detection device 1 according to the embodiment described above generates an image transmission signal for a traffic rule violation, it may not generate an image transmission signal. That is, the violation detection device 1 may transmit the detection result to the user terminal 120 without acquiring the violation image.

Note that the above-described modifications may be applied in combination. Further, the violation detection device 1 according to the embodiment and the modification described above may be incorporated into the user terminal 120 or may be incorporated into the in-vehicle device 110. Moreover, some functions of the violation detection device 1 may be provided in the vehicle-mounted device 110 or the like. For example, the traffic rule DB 10 may be provided in the vehicle-mounted device 110.

Further advantages and modifications can be easily deduced by those skilled in the art. Therefore, the broader aspects of the invention are not limited to the specific details and representative embodiments shown and described above. Accordingly, various changes may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

1 Violation detection device 3 Storage unit 4 Control unit 10 Traffic rule DB
11 Violation information DB
12 Violation image DB
13 Driver information DB
20 Acquisition unit 21 Calculation unit 22 Determination unit 23 Detection unit 24 Instruction unit 110 In-vehicle device 120 User terminal

Claims (5)

Obtaining location information of the vehicle through communication with the vehicle ;
Calculating the vehicle speed and traveling direction of the vehicle based on the position information,
detecting a traffic rule violation based on the location information, the vehicle speed, the traveling direction, and traffic rule information;
When the traffic rule violation is detected, requesting the violative vehicle that violated the traffic rule an image taken when the traffic rule was violated;
A violation detection device comprising: a control unit that transmits the image acquired in response to the request to a user terminal . The violation detection device according to claim 1 , wherein the control unit stores information about a driver who violated a traffic rule and the traffic rule violated by the driver in a linked manner. The control unit acquires surrounding information regarding the surroundings of the vehicle,
The violation detection device according to claim 1, wherein a vehicle that has engaged in dangerous driving is detected based on the position information and the surrounding information. an acquisition step of acquiring vehicle position information;
a calculation step of calculating the vehicle speed and traveling direction of the vehicle based on the position information;
a detection step of detecting a traffic rule violation based on the location information, the vehicle speed, the traveling direction, and traffic rule information;
a request step of requesting an image taken at the time of violating the traffic rule from the violating vehicle that violated the traffic rule when the violation of the traffic rule is detected;
including
The image obtained by the request is sent to the user terminal.
A violation detection method characterized by : 5. The violation detection method according to claim 4 , further comprising a storage step of storing information on a driver who violates a traffic rule in association with the traffic rule that the driver violated.

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