JP2018182408A - Vehicle-data collection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle-data collection system that enables efficient collection of required vehicle data.SOLUTION: An acquisition target point determination unit 240 determines whether image data indicating a situation at an abnormal point, which is a point where a traveling situation of the vehicle 100 on a road is abnormal, has been acquired. This determination unit determines, as a target for acquiring the image data, the abnormal point determined that the image data has not been acquired. An acquisition instruction unit 250 transmits an instruction for acquiring image data at a center 200, to the vehicle 100 traveling the abnormal point determined as the target for acquiring the image data by the acquisition target point determination unit 240. If it is determined that the image data about the abnormal point determined as the target for the acquisition has been received, the acquisition target point determination unit 240 stops the instruction for acquiring the image data from being transmitted to the vehicle 100 from the acquisition instruction unit 250 for the abnormal point.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle data collection system for collecting vehicle data from a plurality of vehicles.

  Conventionally, as a system of this type, for example, as shown in Patent Document 1, the center transmits vehicle data collection conditions to the vehicle, and the vehicle data collected based on the collection conditions is transmitted from the vehicle to the center Technology is known. In this system, the vehicle determines whether the environmental condition instructed by the collection condition matches the own vehicle environment, and transmits vehicle data when it is determined to match to the center. Thereby, desired vehicle data is collected from a plurality of vehicles.

JP, 2016-119547, A

  By the way, in the system described in the above document, for example, when the collection condition of vehicle data is uniformly set including vehicle data having a relatively large data capacity, such as still image data, moving image data, audio data, etc. There is a problem that the vehicle data which is not used for the transmission is transmitted, and the communication capacity of the vehicle data becomes excessive. On the other hand, when the vehicle data to be communicated is uniformly limited in order to reduce the communication capacity of the vehicle data, there is a problem that the center can not collect vehicle data of a sufficient amount of data for analysis. there were.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a vehicle data collection system capable of efficiently collecting desired vehicle data.

  A vehicle data collection system that solves the above problems is a vehicle data collection system that instructs a vehicle to acquire vehicle data and receives the vehicle data acquired from the vehicle based on the instruction, It is judged whether the point situation data which is the vehicle data including at least one of still image data, moving picture data and voice data concerning the abnormal point where the traveling situation of the vehicle is abnormal is received from the vehicle An acquisition target point determination unit that determines the abnormal point determined to not receive the point situation data as a target of acquisition of the point situation data, and acquisition of the point situation data by the acquisition target point determination unit The vehicle relating to the abnormal point determined to be the target of the acquisition for the vehicle traveling the abnormal point determined as the target of And an acquisition instruction unit for transmitting an instruction for acquiring point condition data by the collection system, wherein the acquisition target point determination unit receives the point condition data regarding the abnormal point determined to be the target of the acquisition When it determines, transmission of the said instruction | indication to the vehicle by the said acquisition instruction | indication part about the said abnormal point made into the object of acquisition of the said abnormal point is stopped.

  According to the above configuration, the vehicle condition data having relatively large data capacity including still image data, audio data, and moving image data related to the abnormal point where the traveling condition of the vehicle is abnormal on the road is the point condition data. An instruction to acquire the point situation data is issued to the vehicle traveling at the abnormal point. Therefore, while suppressing the capacity of data communication, it is possible to efficiently collect point situation data which is desired vehicle data used for grasping the situation of an abnormal point. In addition, since the target of acquisition of point status data is an abnormal point determined to not be obtained, point status data used for grasping the status of the abnormal point is collected more efficiently. be able to. Then, when the point situation data on the abnormal point for which acquisition of the point situation data has been instructed is received, the instruction for acquiring the point situation data on the abnormal point is stopped. That is, it is instructed to acquire point situation data related to an abnormal point while reflecting the situation of acquiring point situation data as needed. Therefore, it is possible to further reduce the capacity of data communication when acquiring point situation data which is desired vehicle data used for grasping the situation of an abnormal point.

BRIEF DESCRIPTION OF THE DRAWINGS The block diagram which shows schematic structure of one Embodiment of the collection system of vehicle data. The flowchart which shows the processing procedure of the collection processing of the vehicle data which the collection system of the vehicle data of the embodiment performs.

Hereinafter, an embodiment of a vehicle data collection system will be described with reference to the drawings.
The vehicle data collection system of the present embodiment is configured by a center that manages traveling information of a plurality of vehicles. The center detects an abnormal point, which is a point on the road where the traveling condition of the vehicle is abnormal, based on vehicle data collected from a plurality of vehicles. Further, the center determines whether or not image data consisting of still image data or moving image data has been received as point situation data indicating the situation of the abnormal point among the abnormal points. In addition, the center determines an abnormal point determined not to receive image data as a target of acquisition of image data. Then, the center transmits an instruction for acquiring image data for a vehicle traveling on an abnormal point determined as an object of acquisition of the image data. When the vehicle acquires image data based on an instruction from the center, the acquired image data is transmitted from the vehicle to the center by wireless communication.

  Specifically, as shown in FIG. 1, the vehicle 100 includes an on-vehicle communication device 110 that exchanges various types of information with the center 200. An on-board ECU (electronic control unit) for controlling the operation of various on-vehicle devices is connected to the on-vehicle communication device 110 via a vehicle network NW including, for example, a CAN (controller area network). Here, the on-vehicle ECU includes, for example, a brake ECU 120 that controls the operation of a brake, a steering ECU 130 that controls operation assistance of a steering (handle), and the like, and a navigation ECU 140 that guides the route of the vehicle 100. The brake ECU 120 is connected to a vehicle speed sensor 121 that detects the speed of the vehicle 100 and a brake sensor 122 that detects the amount of depression of the brake pedal by the driver. A steering angle sensor 131 is connected to the steering ECU 130 to detect the amount of steering by the driver. In addition, the navigation ECU 140 is connected to a GPS 141 (global positioning system) for detecting a traveling position of a vehicle, and a map database 142 in which information on intersections on a map and the like is registered.

  When the in-vehicle communication device 110 receives an instruction for acquiring image data from the center 200 through the communication unit 111, the in-vehicle communication device 110 outputs the received instruction to the data acquisition determination unit 112. When receiving an instruction for acquiring image data from the center 200, the data acquisition determination unit 112 instructs the vehicle network communication unit 113 to acquire the instructed image data. In addition, even when the data acquisition determination unit 112 does not receive an instruction for acquiring image data from the center 200, the vehicle network communication unit 113 acquires image data when predetermined conditions are satisfied. Give instructions to Here, as the predetermined condition, there may be mentioned, for example, a case where the vehicle stops in a state in which the blinker is not lit although the traveling position of the vehicle is not near the intersection.

  The vehicle network communication unit 113 is connected to an on-vehicle camera 150 for photographing the outside of the vehicle via a vehicle network NW. The on-vehicle camera 150 includes an imaging element 151 that images the periphery of the vehicle, and an image processing ECU 152 that performs image processing on pixel signals read from the imaging element 151. Then, based on the acquisition instruction from the data acquisition determination unit 112, the vehicle network communication unit 113 acquires image data from the on-vehicle camera 150.

  When the vehicle data acquired by the data acquisition determination unit 112 is CAN data having a smaller data capacity than the image data, the data acquisition determination unit 112 periodically instructs the vehicle network communication unit 113 to acquire the CAN data. Then, based on the acquisition instruction from the data acquisition determination unit 112, the vehicle network communication unit 113 acquires CAN data from the onboard ECUs.

  Vehicle network communication unit 113 stores vehicle data including image data and CAN data acquired through vehicle network communication unit 113 in vehicle data storage unit 114. The data transmission determination unit 115 determines whether to transmit the vehicle data thus stored in the vehicle data storage unit 114 to the center 200. At this time, the data transmission determination unit 115 determines whether or not the vehicle data can be transmitted, in consideration of the transmission processing priority of the vehicle data, the communication environment outside the vehicle, and the like. Then, when it is determined that the vehicle data can be transmitted, the data transmission determination unit 115 reads the vehicle data from the vehicle data storage unit 114 and transmits the read vehicle data to the center 200 through the communication unit 111. In addition, if the period when it is determined that the vehicle data can not be transmitted exceeds the predetermined time, the data transmission determination unit 115 instructs to stop acquisition of the image data from the center 200 to the vehicle 100. Confirm. Then, when it is instructed by the center 200 to stop acquisition of image data from the center 200, the data transmission determination unit 115 stops the instruction to acquire vehicle data from the data acquisition determination unit 112 to the vehicle network communication unit 113. Let

  On the other hand, the center 200 is provided with a center communication unit 210 which transmits and receives various information including the vehicle data from the vehicle 100. The center communication device 210 stores vehicle data received from a plurality of vehicles 100 in a vehicle data storage unit 220 which is a common database. Further, the center communication device 210 outputs CAN data received as vehicle data from the vehicle 100 to the abnormal point detection unit 230.

  Based on the CAN data acquired from the vehicle 100 through the center communication device 210, the abnormal point detection unit 230 detects an abnormal point where the traveling condition of the vehicle is abnormal on the road. At this time, based on vehicle behavior information (vehicle speed, brake, steering angle, etc.) acquired as CAN data from the vehicle 100, for example, the abnormal point detection unit 230 avoids the road on which the vehicle 100 should go straight ahead. When a change is detected, a point where the change of the course is detected is detected as an abnormal point. In addition, the abnormal point detection unit 230 is a point at which sudden braking occurs, a point at which only one lane is traveling at a low speed, and a point at which the steering is turned back multiple times, in addition to the points at which the evasive action occurs. Etc. as an abnormal point. Then, the abnormal point detection unit 230 outputs information on the detected abnormal points to the acquisition target point determination unit 240.

  The acquisition target point determination unit 240 determines whether or not image data indicating the status of the abnormal point detected by the abnormal point detection unit 230 has been stored in the vehicle data storage unit 220. At this time, as the image data indicating the status of the abnormal point, the acquisition target point determination unit 240 stores the image data of high information freshness (for example, an elapsed time after being acquired within one minute) in the vehicle data storage unit 220. When stored, it is determined that vehicle data has been stored. Then, among the abnormal points detected by the abnormal point detection unit 230, the acquisition target point determination unit 240 becomes a target for acquisition of image data from the points excluding the abnormal points for which the corresponding image data has been stored. Determined as a point. That is, among the abnormal points detected by the abnormal point detection unit 230, the acquisition target point determination unit 240 determines an abnormal point for which the corresponding image data is not acquired as a target of acquisition of the image data. Then, the acquisition target point determination unit 240 outputs, to the acquisition instruction unit 250, information on an abnormal point which is a target of acquisition of image data.

  The acquisition instruction unit 250 determines the vehicle 100 traveling the abnormal point for which image data is to be acquired, and acquires image data indicating the state of the abnormal point for which the vehicle 100 is determined. Send instructions At this time, the acquisition instruction unit 250 is based on, for example, a vehicle including a point corresponding to the guide route set by the navigation ECU 140, a vehicle within a certain distance from the corresponding point, and a travel history of the vehicle. It is determined that a vehicle predicted to travel the corresponding point within a predetermined time is a vehicle that travels at the abnormal point.

  Note that while the acquisition instruction point determination unit 240 instructs the vehicle 100 to acquire image data, the acquisition target point determination unit 240 stores the vehicle data of the image data of the corresponding abnormal point by another vehicle. When stored in the unit 220, the corresponding abnormal point is excluded from the target of acquisition of the image data. That is, the acquisition target point determination unit 240 instructs the vehicle 100 traveling on the corresponding abnormal point to stop acquisition of the image data from the acquisition instruction unit 250.

  Next, as an operation example of the present embodiment, a specific processing procedure of vehicle data collection processing executed by the center 200 in cooperation with the vehicle 100 will be described. Vehicle 100 executes vehicle data collection processing shown in FIG. 2 at a predetermined cycle, provided that the ignition switch is on. In addition, the center 200 executes the vehicle data collection process shown in FIG. 2 at a predetermined cycle.

First, as shown in FIG. 2, in the vehicle 100, the in-vehicle communication device 110 acquires CAN data from the in-vehicle ECU through the vehicle network NW (step S10).
Further, in the vehicle 100, the in-vehicle communication device 110 transmits the CAN data thus acquired to the center 200 (step S11).

  On the other hand, the center 200 stands by to receive CAN data from the vehicle 100 (step S20). Then, when the center 200 receives the CAN data transmitted from the vehicle 100 in the previous step S11 through the center communication device 210 (step S20 = YES), the abnormal point on the road is determined based on the received CAN data, Detection is performed through the abnormal point detection unit 230 (step S21).

  Here, when there is an abnormal point detected in the previous step S21 (step S22 = YES), the center 200 determines whether image data with high freshness of information corresponding to the detected abnormal point is not acquired. Is determined through the acquisition target point determination unit 240 (step S23).

  Then, when the image data of high freshness of the information corresponding to the corresponding abnormal point is not acquired (step S23 = YES), the center 200 acquires the corresponding abnormal point as a target point for acquiring the image data. It determines by the point determination part 240 (step S24).

  Further, the center 200 determines the vehicle 100 traveling the spot determined in the previous step S24 as the vehicle 100 to which the instruction for acquiring the image data is to be transmitted through the acquisition instructing unit 250 (step S25). . Then, the center 200 transmits an instruction for acquiring image data through the acquisition instructing unit 250 to the vehicle 100 determined in the previous step S25 (step S26).

  On the other hand, when the vehicle 100 receives from the center 200 an instruction for acquiring image data in the previous step S26 (step S12), based on the received instruction, the traveling position of the vehicle specified by the GPS 141 becomes an abnormal point. When reached, image data indicating the status of the abnormal point is acquired through the on-vehicle camera 150 (step S13). Further, after the on-vehicle communication device 110 transmits the image data thus acquired to the center 200 (step S14), the vehicle data collection process shown in FIG. 2 ends.

  On the other hand, when the center 200 receives the image data thus transmitted from the vehicle 100 through the center communication device 210 (step S27), the center 200 stores the received image data in the vehicle data storage unit 220.

  Thereafter, the center 200 instructs the other vehicle 100 to stop acquisition of the image data related to the corresponding abnormal point (step S28), and ends the vehicle data collection process shown in FIG.

  When there is no abnormal point detected in the previous step S21 (step S22 = NO), the center 200 ends the vehicle data collection process shown in FIG. 2 without going through the process of steps S23 to S28. Do.

  In addition, even if there is an abnormal point detected in the previous step S21 (step S22 = YES), the center 200 has already acquired image data with high freshness of information corresponding to the corresponding abnormal point (step S23 = NO) The vehicle data collection process shown in FIG. 2 ends without passing through the processes of steps S24 to S28.

Next, the operation of the vehicle data collection system of the present embodiment will be described.
Generally, image data contains much information in grasping the situation of the abnormal point on the road, and is highly useful vehicle data. However, since image data is vehicle data having a larger data capacity than CAN data, if it is attempted to collect such image data from vehicle 100 to center 200 under the same conditions as CAN data, the capacity of data communication increases. Resulting in.

  In this respect, in the present embodiment, the center 200 detects an abnormal point on the road based on CAN data collected from the vehicle 100. Then, the center 200 transmits an instruction for acquiring image data indicating the state of the corresponding abnormal point, limiting the vehicle 100 traveling the abnormal points. Therefore, compared with the case where the center 200 uniformly transmits an instruction for acquiring image data indicating the status of the corresponding abnormal point to all the vehicles, the capacity of the data communication is suppressed while the capacity of the data communication is reduced. Image data used for grasping the situation is efficiently collected.

  Further, in the present embodiment, the target of acquisition of image data is limited to an abnormal point where it is determined that image data with high freshness of information has not been acquired. That is, acquisition of image data of an abnormal point where the situation is unconfirmed is selectively performed. Therefore, regardless of the presence or absence of acquisition of image data, compared with the case where the instruction for acquiring the image data is uniformly issued from the center 200 to the target vehicle 100, it is used to grasp the situation of the abnormal point. Image data is collected more efficiently.

  Furthermore, in the present embodiment, when the image data at the abnormal point where the instruction for acquiring the image data is issued to the target vehicle 100 from the center 200 is received, the image data is acquired there. An instruction to stop the vehicle is sent to the other vehicle. That is, acquisition of image data is instructed from the center 200 while reflecting the acquisition status of the image data as needed. Therefore, the capacity of data communication can be further suppressed when acquiring image data used for grasping the situation of the abnormal point.

As described above, according to the above-described embodiment, the following effects can be obtained.
(1) The acquisition instructing unit 250 instructs the vehicle 100 traveling the abnormal point determined as the target of acquisition of the image data by the acquisition target point determination unit 240 to acquire the image data. This makes it possible to efficiently collect image data used for grasping the status of an abnormal point while suppressing the capacity of data communication.

  (2) The acquisition target point determination unit 240 determines whether image data indicating the status of the abnormal point on the road is acquired, and the abnormal point determined as the image data is not acquired is used as the image data Determined as the target of acquisition. Thereby, image data used for grasping the situation of the abnormal point can be collected more efficiently.

  (3) When receiving the image data indicating the status of the abnormal point, the acquisition target point determination unit 240 stops the instruction for acquiring the image data from the acquisition instructing unit 250 for the abnormal point to the vehicle 100. This makes it possible to further reduce the capacity of data communication when acquiring image data used for grasping the situation of an abnormal point.

The above embodiment can also be implemented in the following form.
In the above embodiment, even when the data acquisition determination unit 112 does not receive the instruction to acquire the image data from the center 200, the vehicle acquires the image data when the predetermined condition is satisfied. It has been made to voluntarily instruct the network communication unit 113. Instead of this, the data acquisition determination unit 112 may instruct the vehicle network communication unit 113 to acquire image data only when receiving an instruction to acquire image data from the center 200.

  In the above embodiment, when the vehicle data storage unit 220 stores image data with high freshness of information as the image data indicating the status of the abnormal point, the acquisition target point determination unit 240 acquires the acquisition instruction unit. The instruction for acquiring the image data from 250 to the vehicle 100 is stopped. Instead of this, when the center 200 has specified the situation at the abnormal point using the image data, regardless of the freshness of the information on the image data indicating the situation at the abnormal point, the acquisition target point determination unit 240 does not matter. An instruction for acquiring image data from the acquisition instruction unit 250 to the vehicle 100 may be stopped.

  In the above embodiment, while the acquisition instruction unit 250 instructs the vehicle 100 to acquire the image data, the acquisition target point determination unit 240 determines that the image data of the corresponding abnormal point is another vehicle. When stored in the vehicle data storage unit 220, an instruction to stop acquisition of image data by the acquisition instructing unit 250 is issued. However, besides the other vehicles, the acquisition source of the image data of the abnormal point is installed, for example, in a portable information terminal possessed by a pedestrian passing near the abnormal point or an intersection near the abnormal point. Surveillance cameras and the like.

  In the above embodiment, when the vehicle data to be acquired is CAN data having a smaller data capacity than the image data, the data acquisition determination unit 112 acquires the CAN data from the vehicle network communication unit 113. To periodically give instructions. However, when the data acquisition determination unit 112 receives an instruction for acquiring vehicle data from the center 200 not only for image data but also for CAN data, acquisition of instructed vehicle data is sent to the vehicle network communication unit 113. You may make it instruct.

  In the above embodiment, the case where image data composed of still image data or moving image data is applied as point condition data indicating the condition of an abnormal point is described as an example. However, it is also possible to apply voice data including voice generated at an abnormal point as point situation data. Moreover, it is also possible to apply composite data in which the still image data, the moving image data, and the audio data are associated with one another as point situation data. The point is that the data indicates the status of the abnormal point, and it may be vehicle data having a relatively large data capacity including at least one of still image data, moving image data, and audio data.

  In the above embodiment, the communication standard of the vehicle network NW constituting the collection route of the vehicle data is not limited to CAN, and the communication standard of at least a part of the vehicle network is other communication such as FlexRay or Ethernet (registered trademark) It may be a standard.

  100: vehicle, 110: in-vehicle communication device, 111: communication unit, 112: data acquisition determination unit, 113: vehicle network communication unit, 114: vehicle data storage unit, 115: data transmission determination unit, 120: brake ECU, 121 Vehicle speed sensor 122 Brake sensor 130 Steering ECU 131 Steering angle sensor 140 Navigation ECU 141 GPS 142 Map database 150 In-vehicle camera 151 Image sensor 152 Image processing ECU 200 ... center, 210 ... center communication device, 220 ... vehicle data storage unit, 230 ... abnormal point detection unit, 240 ... acquisition target point determination unit, 250 ... acquisition instruction unit.

Claims (1)

A vehicle data collection system that instructs a vehicle to acquire vehicle data and receives the vehicle data acquired based on the instruction from the vehicle,
Whether point condition data, which is the vehicle data including at least one of still image data, moving image data, and audio data regarding an abnormal point where the traveling condition of the vehicle is abnormal on the road, is received from the vehicle An acquisition target point determination unit that determines the abnormal point determined to not receive the point situation data as a target of acquisition of the point situation data;
For a vehicle traveling on the abnormal point determined as the target of acquisition of the point status data by the acquisition target point determination unit, the point system data on the abnormal point determined as the target of the acquisition is collected by a collection system And an acquisition instruction unit for transmitting an instruction for acquisition;
When the acquisition target point determination unit determines that the point situation data on the abnormal point determined to be the target of the acquisition is received, the acquisition instruction for the abnormal point for which the abnormal point is to be acquired A vehicle data collection system for stopping transmission of the instruction to a vehicle by a unit.

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