SPINNING AND SLIDING DETECTION DEVICE AND SPINNING AND SLIDING DETECTION METHOD

A spinning and sliding detection device in a train includes: a change detection unit that periodically acquires a first detected value from a speed sensor, calculates a first change amount, using the first detected values, periodically acquires a second detected value from an acceleration sensor, calculates a second change amount, using the second detected values, and selects a change mode from a plurality of change modes defined for determining whether spinning or sliding has occurred at the train, using the first change amount, the second change amount, a first threshold, and a second threshold and outputs the selected change mode; and a spinning and sliding determination unit that determines whether spinning or sliding has occurred at the train and determines whether a failure has occurred in either the speed sensor or the acceleration sensor, based on the change mode acquired from the change detection unit.