JP-7856001-B2 - Information notification system

JP7856001B2JP 7856001 B2JP7856001 B2JP 7856001B2JP-7856001-B2

Inventors

齋藤広樹

Assignees

トヨタ自動車株式会社

Dates

Publication Date: 20260511
Application Date: 20221227

Claims (5)

An information notification system that notifies vehicle users of information , One or more processors that perform recognition processing based on images taken by a camera mounted on the vehicle and showing the surrounding conditions of the vehicle , A device comprising one or more storage devices, Traffic sign information is information that shows the content of traffic signs installed on roads. The one or more storage devices are Map information including road identification information, second information which is traffic sign information obtained on the road independently of the recognition process , and information on the date and time when the second information was generated or updated . It is configured to store road identification information, third information which is traffic sign information obtained as a result of the past recognition process on the road, and performance information which includes a timestamp indicating the date and time the third information was obtained, or a freshness parameter indicating the elapsed time since the date and time the third information was obtained . The one or more processors determine whether they were able to acquire the first information, which is real-time traffic sign information relating to the target road on which the vehicle is traveling, through the recognition process. If the first information cannot be obtained by the recognition process, the one or more processors, Based on the identification information of the target road, the map information and performance information relating to the target road are obtained from one or more storage devices. The date and time on which the third information was obtained from the freshness parameter is obtained, and it is determined whether a first priority condition is met, which at least includes the fact that the date and time on which the third information was obtained is newer than the date and time on which the second information was generated or updated. If the first priority condition is met, the user is notified of the third information instead of the second information. It is configured in such a way Information notification system.
An information notification system according to claim 1, The aforementioned performance information further includes the confidence level of the aforementioned third information, An information notification system wherein the first priority condition further includes that the confidence level of the third information is equal to or greater than the first threshold.
An information notification system according to claim 1 or 2, An information notification system in which, when the first information is obtained by the recognition process , the one or more processors notify the user of the obtained first information.
The information notification system according to claim 2, If the first information is obtained through the recognition process and the second priority condition is met, the one or more processors shall notify the user of the third information instead of the first information. The second priority condition includes an information notification system in which the confidence level of the third information is equal to or greater than the second threshold, and the elapsed time from the date and time the third information was obtained to the present time is less than or equal to a certain period of time .
An information notification system according to claim 1, The aforementioned traffic signs are speed limit signs, stop signs, or no-passing signs. Information notification system.

Description

This disclosure relates to technology for notifying vehicle users of information. Patent Document 1 discloses a driver assistance system. The driver assistance system updates map information based on driving trajectory information (probe data) acquired from a measurement vehicle (probe car). The map information includes road sign information. Furthermore, the driver assistance system provides map information to vehicles that utilize the map information. Japanese Patent Publication No. 2022-096906 This is a conceptual diagram illustrating the outline of the information notification system according to the embodiment.This is a block diagram showing an example configuration of an information notification system according to an embodiment.This flowchart shows the processes related to the accumulation and updating of performance information according to the embodiment.This is a flowchart showing a first example of the information notification process according to the embodiment.This is a flowchart showing a second example of the information notification process according to the embodiment.This flowchart shows a third example of the information notification process according to the embodiment. 1. Overview Figure 1 is a conceptual diagram illustrating the overview of the information notification system 10 according to this embodiment. The information notification system 10 notifies the user O of vehicle 1 of information. For example, the user O of vehicle 1 is the operator of vehicle 1. The operator of vehicle 1 may be a driver who is on board vehicle 1, or a remote operator who remotely controls vehicle 1 (remote driving, remote assistance). The user O of vehicle 1 may be a passenger on board vehicle 1. Vehicle 1 may be an autonomous vehicle. The information notification system 10 may be installed in vehicle 1, or it may be included in a remote operator terminal operated by a remote operator. A part of the information notification system 10 may be included in a cloud server. The information notification system 10 includes a notification device for notifying the user O of information. For example, the notification device includes a display device, and the information notification system 10 displays the information on the display device. Alternatively, the notification device may include a speaker, and the information notification system 10 may output audio information from the speaker. The information notified to User O from the information notification system 10 will be referred to as "notification information" below. Typically, notification information is information related to the road on which Vehicle 1 is traveling. For example, notification information may be information about traffic signs S installed on the road. Examples of traffic signs S include speed limit signs, stop signs, no-passing signs, etc. Information about traffic signs S may be an image of the traffic sign S, an icon of the traffic sign S, or the content indicated by the traffic sign S. For example, if the traffic sign S is a speed limit sign, the notification information may be the speed limit of that road. Notification information is not limited to information about traffic signs S. Other examples of notification information include the presence of pedestrian crossings, traffic lights, and landmarks. In general, notification information can be said to be information about road-related targets (e.g., traffic signs, pedestrian crossings, traffic lights, landmarks, etc.). It can also be said that notification information is the kind of information that would be registered on a road map. In the following explanation, we consider, as an example, the case where the target is a traffic sign S and the notification information is traffic sign information related to traffic sign S. The same applies to other target cases. Traffic signs S installed on the road can be recognized using a camera 2 mounted on vehicle 1. More specifically, camera 2 photographs the surroundings of vehicle 1 and acquires an image IMG showing the surroundings of vehicle 1. The information notification system 10 acquires the image IMG obtained by camera 2 and recognizes the traffic sign S by analyzing the image IMG. The information notification system 10 then notifies the user O of the traffic sign information related to the recognized traffic sign S. For example, the information notification system 10 displays an image of the recognized traffic sign S or its icon on a display device. As another example, the information notification system 10 may read the speed limit specified by the recognized speed limit sign and notify the user O of that speed limit. The recognition information 110 is real-time information obtained through recognition processing based on image IMG captured by the camera 2 mounted on the vehicle 1. In particular, the real-time traffic sign information (notification information) obtained as a result of this recognition processing is hereinafter referred to as