US-12624955-B2 - Travel route management system

Abstract

The present disclosure provides a travel route management system that generates a travel route for autonomous driving control of a vehicle. The travel route management system comprises one or more storage devices configured to store a travel record that includes data of past travel of the vehicle by the autonomous driving control, and processing circuitry. The vehicle comprises a target storage device that stores log data related to the autonomous driving control. The processing circuitry is configured to execute acquiring a remaining capacity of the target storage device, generating one or more candidate routes, and selecting the travel route from the one or more candidate routes. Selecting the travel route includes using a number of common points with the travel record as an index for selecting the travel route from the one or more candidate routes when the remaining capacity is smaller than a predetermined amount.

Inventors

• Masamichi OHSUGI
• Hiromitsu Urano

Assignees

• TOYOTA JIDOSHA KABUSHIKI KAISHA

Dates

Publication Date

20260512

Application Date

20240702

Priority Date

20230710

Claims (5)

1. 1 . A travel route management system that generates a travel route for autonomous driving control of a vehicle, the travel route management system comprising: one or more storage devices configured to store a travel record that includes data of past travel of the vehicle by the autonomous driving control; and processing circuitry mounted on the vehicle, wherein the vehicle comprises a target storage device that stores log data related to the autonomous driving control, and the processing circuitry is configured to execute: acquiring a remaining capacity of the target storage device; generating a plurality of candidate routes; selecting the travel route from the plurality of candidate routes; selecting the travel route includes using a number of common points with the travel record as an index for selecting the travel route from the plurality of candidate routes when the remaining capacity is smaller than a predetermined amount; storing difference data by excluding a portion overlapping the log data in response to the remaining capacity being smaller than the predetermined amount; and performing the autonomous driving control of the vehicle in accordance with the selected travel route.
2. 2 . The travel route management system according to claim 1 , wherein selecting the travel route includes using smallness of the number of the common points with the travel record as an index for selecting the travel route from the plurality of candidate routes when the remaining capacity is larger than the predetermined amount.
3. 3 . The travel route management system according to claim 1 , wherein the travel record includes data related to a past-record route along which the vehicle travels in a past, and the processing circuitry is further configured to determine that a candidate route from the plurality of candidate routes having more in common with the past-record route is larger in the number of common points.
4. 4 . The travel route management system according to claim 3 , wherein the travel record further includes data related to a past-record lane in which the vehicle travels in a past, the plurality of candidate routes includes information specifying a lane in which the vehicle travels, and the processing circuitry is further configured to determine that the candidate route from the plurality of candidate routes having more in common with the past-record lane is larger in the number of common points.
5. 5 . The travel route management system according to claim 1 , wherein the travel record includes information about a past-record road shape existing in a route along which the vehicle travels in a past, and the processing circuitry is further configured to execute: acquiring information about a road shape included in each of the plurality of candidate routes; and determining that a candidate route from the plurality of candidate routes having more in common with the past-record road shape routes is larger in the number of common points.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present application claims priority under 35 U.S.C. § 119 to Japanese Patent Application No. 2023-113086, filed on Jul. 10, 2023, the contents of which application are incorporated herein by reference in their entirety. BACKGROUND Field The present disclosure relates to a travel route management system which generates a travel route for autonomous driving control. Background Art JP2020-060901A discloses a driving information management device which can record a route traveled by autonomous driving in the past as a history route. The driving information management device is mounted on a vehicle including an autonomous driving device capable of switching manual driving and autonomous driving. According to the driving information management device, when the autonomous driving device is switched to autonomous driving, generation of autonomous driving history data indicating a history of a traveling route on which autonomous driving has been performed is automatically started. The autonomous driving history data is stored in a database, and when the vehicle travels, a route on which autonomous driving is possible can be read from the past history. In addition to the above-described JP2020-060901A, the following JP2017-134725A and JP2020-008441A can be exemplified as documents showing the technical level of the technical field related to the present disclosure. SUMMARY A technique for autonomously driving a vehicle is known. When the vehicle travels by autonomous driving, it is desirable that data related to autonomous driving control be stored so that how the autonomous driving of the vehicle is performed can be verified later. However, it may become difficult to store all data depending on how large a capacity of data is remained. In such a case, how to ensure transparency and ease of verification of the autonomous driving control is a problem. An object of the present disclosure is to provide a technique that makes it possible to ensure transparency and ease of verification of autonomous driving control of a vehicle when log data related to the autonomous driving control is stored. The present disclosure provides a travel route management system that generates a travel route for autonomous driving control of a vehicle. The travel route management system comprises one or more storage devices configured to store a travel record that includes data of past travel of the vehicle by the autonomous driving control, and processing circuitry. The vehicle comprises a target storage device that stores log data related to the autonomous driving control. The processing circuitry is configured to execute acquiring a remaining capacity of the target storage device, generating one or more candidate routes, and selecting the travel route from the one or more candidate routes. Selecting the travel route includes using a number of common points with the travel record as an index for selecting the travel route from the one or more candidate routes when the remaining capacity is smaller than a predetermined amount. According to the technique of the present disclosure, the travel route management system includes one or more storage devices that stores the travel record that includes data of past travel of the vehicle by the autonomous driving control. The travel route management system first generates one or more candidate route, which become one or more candidates for the travel route. When the remaining capacity of one or more storage devices for storing the log data related to the autonomous driving control is equal to or less than the predetermined amount, the travel route management system selects the travel route from one or more candidate routes using the number of common points with the travel record as the index. When the vehicle travels along the travel route generated in this way, the data related to the autonomous driving control can be complemented by the log data stored in the past even if the data is not stored. In this way, according to the present disclosure, it is possible to ensure transparency and ease of verification of the autonomous driving control. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an example of a configuration related to autonomous driving control of a vehicle according to a present embodiment. FIG. 2 is a diagram showing an example of a configuration of an autonomous driving system according to the present embodiment. FIG. 3 is a flowchart showing an example of processing related to generation of a travel route. FIG. 4 is a flowchart showing an example of processing related to storage of control data. FIG. 5 is a flowchart showing an example of processing related to generation of the travel route in a first modification. DETAILED DESCRIPTION 1. Autonomous Driving of Vehicle FIG. 1 is a block diagram showing a configuration example related to autonomous driving control of a vehicle 1 according to a present embodiment. The autonomous driv