JP-7855993-B2 - Information processing system

Inventors

• 森田 隼太
• 小渕 達也
• 木村 陽介
• 佐藤 正俊

Assignees

• トヨタ自動車株式会社

Dates

Publication Date

20260511

Application Date

20221205

Claims (1)

1. In an information processing system in which a server installed at a base station receives vehicle status information transmitted from each of several vehicles capable of external communication, and the server statistically processes the said information, Each of the aforementioned vehicles is equipped with a vehicle-side communication unit that transmits driving state information, which associates at least information on the vehicle's acceleration/deceleration change pattern with location information of the point or section where the change pattern information was acquired. The aforementioned server, A server-side communication unit that receives the driving status information transmitted from each of the aforementioned vehicles, A target determination unit determines whether a point or section is a point or section that should be designated as a display target for contributing to traffic safety, based on the specific information of a point or section related to the location information contained in each of the driving status information from each of the vehicles received by the server-side communication unit, and the information of the acceleration/deceleration change pattern. When the target determination unit determines that the point or section is a point or section that should be displayed, the road attribute information generation unit generates the specific information and attribute information corresponding to the acceleration/deceleration change pattern in relation to the point or section, The system includes a display unit capable of displaying the attribute information generated by the road attribute information generation unit , The aforementioned target determination unit determines that even if a vehicle decelerates suddenly, if that point is an intersection with traffic lights, it is a point or section that should not be included in the display target. When attribute information is generated by the road attribute information generation unit after it has been determined that a point or section should be displayed, the acceleration/deceleration change patterns in said attribute information include at least Pattern 1, which is a pattern from low speed to 0 speed, and Pattern 2, which is a pattern from medium speed to 0 speed. In Pattern 1, if an intersection exists on the road traveled, the attribute information is set to indicate that it is an intersection with poor visibility; if no intersection exists, the attribute information is set to indicate that it is a place where rear-end collisions are likely to occur during traffic congestion. An information processing system characterized in that, in Pattern 2, if the intersection has traffic lights installed, the attribute information is not to be displayed, and if the intersection does not have traffic lights installed, the attribute information is set to be the same as in Pattern 1 .

Description

This invention relates to an information processing system. Conventionally, as disclosed in Patent Document 1, an information processing system is known in which information from multiple vehicles capable of external communication is received by a base station server, and the server aggregates this information. The information processing system disclosed in Patent Document 1 acquires, when a vehicle traveling on a road experiences sudden deceleration, the vehicle's behavior after the sudden deceleration occurs and the corresponding result of the location where the sudden deceleration occurred, as well as map information. Based on the acquired information, it determines the cause of the sudden deceleration and performs guidance or vehicle control using the cause of the sudden deceleration. Japanese Patent Publication No. 2021-26579 Figure 1 is a block diagram showing the schematic configuration of an information processing system according to an embodiment.Figure 2(a) shows an example of a change pattern in vehicle acceleration and deceleration, and Figures 2(b) to 2(f) show examples of a change pattern in steering angle during vehicle deceleration.Figures 3(a) to 3(c) show examples of the map display state for each pattern on the server's display unit. The embodiments of the present invention will be described below with reference to the drawings. In this embodiment, we will explain using as an example the case where vehicle speed information and vehicle deceleration information (information on the acceleration and deceleration of the vehicle) are handled as statistically processed information among the various types of information (probe data) transmitted from each of multiple vehicles capable of external communication to a data center server installed in a data center (base station). In addition to this information, the probe data actually handled by the information processing system may also include steering operation information, accelerator pedal operation information, brake pedal operation information, etc. Figure 1 is a block diagram illustrating the schematic configuration of the information processing system 10 according to this embodiment. The information processing system 10 includes an in-vehicle system 20 mounted on a vehicle and a data center server 30 (hereinafter simply referred to as server 30) installed in a data center. The in-vehicle system 20 and server 30 are able to communicate via a network 40. Although Figure 1 shows only one in-vehicle system 20, multiple vehicles are equipped with the in-vehicle system 20. For example, information can be transmitted and received between the in-vehicle system 20 mounted on each vehicle traveling within a predetermined area (a wide-area jurisdiction) managed by server 30 and the server 30 via the network 40. The in-vehicle system 20 includes an ECU 21. The ECU 21 is connected to an in-vehicle sensor group 22, a camera 23, a navigation system 24, a display unit 25, and a communication unit (vehicle-side communication unit) 26 that manages communication with the server 30, etc. The on-board sensor group 22 includes a GNSS sensor 22a that receives positioning signals from GNSS satellites and acquires GNSS positioning information, an acceleration sensor 22b that detects the vehicle's acceleration (including deceleration), and a vehicle speed sensor 22c that detects the vehicle's speed. The on-board sensor group 22 also includes an accelerator pedal sensor 22d that detects the amount the accelerator pedal is depressed, a brake pedal sensor 22e that detects the amount the brake pedal is depressed, and a steering angle sensor 22f that detects the steering angle. Sensor data (also called CAN data) detected by each sensor in the on-board sensor group 22 is transmitted to the server 30 as needed, or whenever a predetermined amount of data has been accumulated. In particular, in this embodiment, while the vehicle's ignition switch is ON, driving status information, which associates vehicle status information such as vehicle speed (vehicle speed data), vehicle deceleration (vehicle deceleration data), and steering angle (steering angle data) with location information of the point or section (point or section on the road) where this vehicle status information was acquired, is transmitted to the server 30 via the network 40. Camera 23 photographs the area in front of the vehicle. Image data captured by camera 23 is transmitted to server 30 as it occurs, or whenever a predetermined amount of image data is accumulated. The navigation system 24 includes a storage unit (not shown) for storing map information. Based on the GNSS positioning information output from the GNSS sensor 22a and the map information stored in the storage unit, it displays the vehicle's position on the map displayed on the display unit 25 and provides route guidance to the destination. The display unit 25 includes a meter display 25a and a HUD (Head-Up Display) 25b. Next, the server 30 will be d