Method and device for detecting upward arching of track board

The invention provides a method and a device for detecting arching of a track board. Based on the method, when a target track needs to be detected and maintained, a detection train can be firstly controlled to run on the target track, and detection data are collected according to a preset sampling frequency in the running process; wherein the detection data comprises mileage data, driving speed and framework vertical acceleration; according to the mileage data, dividing the collected framework into a plurality of segments in a vertical acceleration manner; according to the detection data, calculating acceleration signal main frequency and excitation frequency of each segment in the plurality of segments; and determining whether the target track has the track board arching or not according to the acceleration signal main frequency and the excitation frequency of each segment. Through calculation and according to the acceleration signal main frequency and the excitation frequency of each segment, whether the ta