Map update determination system

Abstract

A map update determination system includes a traveling plan generation unit generating, based on a target route of a vehicle set in advance and map information, a traveling plan of the vehicle including a control target value for the vehicle in accordance with a position on the target route, a detection value acquisition unit acquiring, in association with the position on the target route, a control result detection value resulting from an automatic driving control for the vehicle executed based on a road environment in a vicinity of the vehicle, a traveling situation of the vehicle, a position of the vehicle, and the traveling plan, an evaluation value calculation unit calculating an evaluation value of the traveling plan for each zone, and a map update determination unit determining a necessity of an update of the map information for each zone.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority from Japanese Patent Application No. 2015-216960 filed on Nov. 4, 2015, the disclosure of which, including the specification, drawings and abstract is incorporated herein by reference in its entirety.BACKGROUND[0002]1. Technical Field[0003]This disclosure relates to a map update determination system that determines a necessity of a map information update.[0004]2. Description of Related Art[0005]Japanese Patent Application Publication No. 2002-116689 (JP 2002-116689A) is known as technical literature relating to a device that determines a necessity of an update of map information. JP 2002-116689A discloses a map information-providing system for providing map information in response to a request from a vehicle. This system acquires trajectory data relating to a trajectory in which the vehicle travels in order to update the map information. In this map information-providing system, in a case where the traject...

AI Technical Summary

Benefits of technology

[0012]In the map update determination system according to a first aspect or the second aspect of the disclosure, the map update determination unit may set the evaluation threshold for the zone based on a position of the zone in the map information of the map database or a traveling time of the vehicle in the zone. According to this map update determination system, an appropriate map information update necessity determination in accordance with the position of the zone may be performed, by the evaluation threshold for the zone being set based on the position of the zone, in that a higher level of map information accuracy is required for a zone in an urban area than for a suburban zone. Alternatively, according to this map update determination system, an appropriate map information update necessity determination in accordance with the traveling time can be performed, by the evaluation threshold for the zone being set based on the traveling time of the vehicle in the zone, in that an accuracy of white line recognition using an image captured by a camera and the like declines more at night than in a daytime and this affects a reliability of the map information update necessity determination.

Problems solved by technology

In the map information-providing system according to the related art described above, however, nothing has been proposed in relation to an update method for a case where the map information becomes outdated due to topographic changes (in, for example, lane width and road curvature) attributable to construction works or the like.

In a case where the map update is performed once every certain period of time based on a determination that the map information has become outdated, map information maintenance costs will increase if this certain period of time is short.

In contrast, if this certain period of time is long, the map information may become outdated map information inappropriate for the automatic driving control.

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