DERAILMENT DETECTION DEVICE AND DERAILMENT DETECTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a derailment detection device and a derailment detection method, which can improve precision in detecting a single-wheel derailment.SOLUTION: A derailment determination part 112 of a derailment detection device 110 determines that a single-wheel of a railway vehicle is being derailed in a case where a vertical displacement amount d of a railway vehicle is at least a displacement amount threshold value dwhile an inclination angle θaround an axis in longitudinal direction is at least an inclination angle threshold value θ. In a case with a railway vehicle in which a vertical displacement amount d and fluctuation in inclination angle θaround an axis in longitudinal direction caused by getting on/off of a passenger and vibration while a railway vehicle traveling are large, it is difficult to precisely detect a single-wheel derailment by a determination based only on the vertical displacement amount d or the like. However, by determining a single-wheel derailment of a railway vehicle using AND condition of the vertical displacement amount d and the inclination angle θaround an axis in longitudinal direction, precision in detecting single-wheel derailment can be improved.SELECTED DRAWING: Figure 5