System and method for monitoring integrity of steel rails of cloud platforms on basis of guide wave technologies

Abstract

The invention discloses a system and a method for monitoring the integrity of steel rails of cloud platforms on the basis of guide wave technologies. The system comprises a front-end monitoring module, a cloud monitoring server and a browsing terminal. The front-end monitoring module comprises a guide wave energy transducer, a temperature sensor and a control cabinet, and a solar panel module, a charge and discharge control circuit, an energy storage module, a transmission interface circuit module, a lower computer control circuit module, a communication interface circuit module, a guide wavereceiving and transmitting module and a signal conditioning module are arranged in the control cabinet. The method includes extracting strong-correlation characteristic signals and coefficient matrixes by means of noise reduction; carrying out dimensionality reduction and noise reduction reconstruction to obtain guide wave signals and acquiring damage locations so as to monitor the integrity of the steel rails. Acoustic emission sources at different structural locations of the steel rails can be represented by the characteristic signals and the coefficient matrixes. Damage of the steel rails can be represented by the guide wave signals. The system and the method have the advantages that the integrity of the steel rails can be effectively reliably monitored by the aid of the system and themethod, the monitoring cross-regionalism and timeliness can be greatly improved, and the system and the method have important practical significance and engineering values.

Description

technical field [0001] The present invention relates to a rail integrity monitoring system and method, in particular to a cloud platform rail integrity monitoring system and method based on guided wave technology. Background technique [0002] In recent years, on the one hand, with the rapid development of the national economy, the railway traffic, which is the lifeline of the national economy, has achieved unprecedented rapid development; on the other hand, with the rapid development of the With a substantial increase, the load and impact on the rail as an important part of the track will also increase, which will inevitably lead to an increase in the probability of damage to the rail, and put forward stricter requirements for the reliable and safe operation of the track. Therefore, there is an urgent need to propose effective and reliable technologies and methods for the detection and service status monitoring of in-service railway rails. [0003] Ultrasonic guided wave t...

AI Technical Summary

Problems solved by technology

However, considering that the rail structure features are more complex and there are many overlapping fasteners, traditional point-to-point non-destructive testing methods such as ultrasonic testing, magnetic flux leakage testing, machine vision and penetration testing are difficult to meet the timeliness and cloud-based online testing requirements in actual monitoring. , reliability, and strict requirements across a wide range of regions

At the same time, considering the busy operation of railway lines, the offline manual detection and monitoring technology of the track during the skylight period has been difficult to meet the growing actual detection and monitoring needs of railways.

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