ANOMALOUS TRAVEL LOCATION DETECTION DEVICE AND ANOMALOUS TRAVEL LOCATION DETECTION METHOD

摘要

A turning value corrector corrects turning values contained in multiple pieces of travel history information. A reference turning value calculator uses multiple turning values that have been associated with the same calculation point to calculate a reference turning value. An anomalous travel location detector calculates the divergence from the reference turning value for each piece of travel history information subjected to detection of an anomalous travel location. Locations for which the deviation from the reference turning value is large are detected as anomalous travel locations.

主权项

1. An anomalous travel location detection device for detecting an anomalous travel location where anomalous traveling in a road width direction occurs, the anomalous travel location detection device comprising:
a history information obtainer configured to obtain from a vehicle a plurality of pieces of travel history information, each including a turning value that indicates a physical quantity related to a position of the vehicle and turning of the vehicle; a turning value corrector configured to correct the turning values in the pieces of travel history information, wherein the turning value corrector is configured to correct the turning values to turning values associated with preset calculation points; a reference turning value calculator configured to calculate a reference turning value using the turning values that are associated with a common one of the calculation points, wherein the reference turning value is an average turning value; and an anomalous travel location detector configured to calculate a divergence from the reference turning value for each piece of travel history information subjected to detection of an anomalous travel location, wherein the anomalous travel location detector is configured to detect a location where the divergence from the reference turning value is greater than or equal to a predetermined threshold large as the anomalous travel location.