Steel rail stress real-time sensing method and component

Abstract

The invention relates to a steel rail stress detection system, in particular to a steel rail stress real-time sensing method and component. The component comprises a sensing pad and a wireless communication repeater. The sensing pad comprises a pressure sensing area, a polyamide FPC flexible circuit board and a rubber body. All the parts are vulcanized by the special molding process. The sensing pad replaces the existing standard part-insulated cushion pad installed under the railway steel rail. The sensing pad has the same mechanical properties as the insulated cushion pad, the whole rigidityof the rail structure can be kept consistent, and the sensing pad and the insulated cushion pad are interchangeable in structure and mechanical properties. The sensing pad enables the rail to sense external force in real time and convert the force into the road sensing data and transmit the force to the wireless communication repeater in a radio frequency mode. The wireless communication repeateris installed on the catenary mast beside the rail and forms a short-range wireless ad hoc network with the sensing pads of the adjacent jurisdictions and is responsible for uploading the data collected and solved by the sensing pads from the local jurisdiction in real time.

Description

technical field [0001] The invention relates to the technical field of rail transportation, in particular to a method and assembly for real-time sensing of rail force. Background technique [0002] Train operation safety, especially high-speed railway operation safety is the most basic requirement for railway transportation. The safety of train operation mainly depends on three factors. The first is the vehicle factor, whether there will be serpentine motion instability, derailment and overturning of the running vehicle; the second is the line factor, whether the seamless line has sufficient stability margin , whether it can remain stable under the action of huge temperature force and external force; the third is that the railway signal system is sufficiently stable and reliable, and it should have a completely independent redundant system as a backup support. In addition, defects such as wheel polygons, tread falling blocks, and track corrugation are important factors that...

AI Technical Summary

Problems solved by technology

In railway works, in order to grasp the internal temperature force of the seamless line, the current practice is to use theodolite and take the observation pile as a reference point to regularly observe the longitudinal creepage of the rail to calculate the locked rail temperature. Some foreign countries use the distribution of punching installation stress on the rail. In the application example of the sensor, the above methods all have the defects of substituting points for surfaces and partial generalizations, which cannot fully reflect the real situation in real time

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