Method and device for on-line acquisition of steel rail temperature, strain and acceleration data

Abstract

The invention relates to a method and a device for the on-line acquisition of steel rail temperature, strain and acceleration data, and belongs to the technical field of temperature, strain and vibration acceleration measurement. The device comprises a temperature sensor, a strain sensor, an acceleration sensor, a first wireless data acquisition node, a second wireless data acquisition node, a first power supply unit, a second power supply unit, a third power supply unit, a gateway and a remote PC client, wherein the first wireless data acquisition node and the second wireless data acquisition node are composed of a group bridge circuit, an amplification circuit, a filtering circuit, an A / D switching circuit, a microprocessor circuit, a synchronous acquisition trigger circuit, a memory circuit and a wireless communication unit; data transmission is realized by the means of the wireless communication; the first data acquisition node and the second data acquisition node are used for automatically acquiring static and dynamic data of a steel rail according to preset parameters. The device provided by the invention can automatically acquire the dynamic strain and acceleration signals of the steel rail when a train passes, and does not affect railway train operation safety or need human control at all.

Description

technical field [0001] The invention belongs to the technical field of temperature, strain and vibration acceleration measurement, and in particular relates to an online data acquisition method and device for rail temperature, strain and acceleration. Background technique [0002] With the development and improvement of the world's high-speed railway science and technology and the deepening of the reform of the railway transportation management system in various countries, the world's high-speed railway has entered a period of great development. While achieving high-speed and heavy loads, the friction, extrusion, and impact of the rails are also more prominent, which not only increases the probability of fatigue cracks on the rails, but also speeds up the development of the rails from cracks to fracture. In order to ensure the safety of train operation, the requirements for the static and dynamic characteristics of rails are getting higher and higher, and it is far from enou...

AI Technical Summary

Problems solved by technology

Its measurement accuracy and fault location accuracy are relatively high, but its function is single, it is not easy to maintain, and it needs to replace the steel rails in use, so the construction is complicated

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