上下加速度の監視による脱線検知機能の開発

抄録

To improve the safety of Shinkansen services, we are developing a function to detect derailments using the vertical acceleration of the bogie frame obtained from existing bogie monitoring devices. First, to obtain basic data for determining derailments, derailment simulation tests were conducted using an actual bogie, and the acceleration levels occurring during normal operation were verified. Next, based on the obtained data and verification results, multiple detection algorithms were considered to distinguish between normal operation and derailment, with the aim of optimizing detection time and reducing the risk of undetected derailments. Finally, to evaluate the validity of the considered detection algorithm and verify the threshold value and duration, a monitoring run has been conducted with a vehicle equipped with the detection algorithm.