Wireless detection device for train wheel-rail contact force

Abstract

The invention relates to a wireless detection device for train wheel-rail contact force. The wireless detection device comprises a sensor unit, a time digital conversion unit, a data acquisition unit, a data storage unit, a high-speed wireless network transmission module, a data processing and analyzing software module and the like. The sensor unit mainly comprises strain gauges in different bridge manners according to different test requirements. The time digital conversion module is mainly used for converting time information corresponding to analog signals of the sensor into digital signals. The data acquisition unit realizes acquisition of eight-channel digital signals. The data storage unit is used for storing acquired data in real time. The high-speed wireless network transmission module realizes wireless transmission and processing of data of wheel-rail contact force. The data processing and analyzing software module is used for analyzing and processing wheel-rail contact force testing data.

Description

technical field [0001] The invention relates to the field of electrical detection, in particular to a method and device for wireless detection of wheel-rail contact force. Background technique [0002] The determination of the wheel-rail contact force is the basis for the study of the wheel-rail relationship. The interaction force between the wheel and the track directly affects the safety of railway traffic, the wear and maintenance of the wheel and rail, and is also essential for evaluating the performance of the bogie and the running quality of rolling stock. parameter. The measurement of the wheel-rail force is mainly to measure the lateral force and vertical force. Through real-time monitoring and data processing and analysis, record the lateral force, vertical force and the position of the action point between the wheel and rail when the train is running. By processing and analyzing the collected data, The maximum lateral force, maximum vertical force, derailment coef...

AI Technical Summary

Problems solved by technology

Among the wheel-rail force test methods used abroad: Germany adopts the axonometric method, which has low cost and simple equipment, but the measurement frequency band is narrow, and it is not sensitive to the position of the force acting point, and the error is large; the spoke wheel set in the UK has high precision. But the cost is high and there are some differences from the actual wheel set; moreover, the existing measurement methods and devices mainly transmit data through wired methods, such as collector rings, which will introduce additional interference and reduce measurement accuracy At the same time, the measuring device through the wired data transmission method can only be applied to the indoor wheel-rail contact force calibration test bench, and cannot detect the wheel-rail contact force on the actual line.

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