Derailment precaution detection system, control device, derailment precaution detection method, and derailment precaution detection program

摘要

To provide a derailment sign detection system capable of enhancing the detection accuracy of a train derailment sign.SOLUTION: A wavelet analysis is respectively applied to pitch angular velocity θ(t), roll angular velocity φ(t) outputted from an angular velocity sensor 35 mounted on a truck, and a wavelet coefficient 14 of the pitch angular velocity and a wavelet coefficient 15 of the roll angular velocity are calculated. Each of the two wavelet coefficients 14, 15 changing in time series is compared with a wavelet coefficient threshold 16 to detect a derailment sign when both coefficients exceed the threshold. A wavelet coefficient calculated about a low frequency region, for example, of 0.5 to 100 Hz is used. Two kinds of derailment sign detection algorithm of a frequency region and a time region are combined to enhance derailment sign detection accuracy. Real time processing of the frequency region becomes possible by adopting the wavelet analysis to achieve derailment prevention.SELECTED DRAWING: Figure 4