Detection method, detection system and vehicle for rail defect

Abstract

The invention discloses a rail defect detecting method and system and a vehicle. The system comprises a magnetizing device for magnetizing a rail, a magnetic sensor for collecting magnetizing information of the rail, a positioning device for obtaining position information of a rail flux leakage position according to a positioning instruction sent by a controller, a display device, the controller connected with the positioning device, the magnetic sensor and the display device and used for judging whether flux leakage happens or not according to the magnetizing information of the rail, conducting defect recognizing and contour inversion on the magnetizing information during flux leakage and sending the result to the display device to be displayed. The magnetizing device, the magnetic sensor, the positioning device, the display device and the controller are all arranged on the same carrier. The system has the advantages that all the detecting devices are arranged on the same carrier, and by detecting and analyzing rail defects in a magnetizing mode, the system is low in power consumption, high in response speed, high in detection accuracy, high in positioning accuracy, long in runtime and capable of displaying positions and shapes of defects in real time.

Description

technical field [0001] The invention relates to the technical field of non-destructive electromagnetic measurement, in particular to a detection method, detection system and vehicle for rail defects. Background technique [0002] At present, the development of high-speed railways in my country is changing with each passing day, and the length of railways is increasing at a rate of more than 1,000 kilometers every year. Therefore, the safety of railway tracks has also become a major issue. Defects in railways can cause significant casualties and property damage. However, due to the huge length of the railway, the workload of non-destructive testing methods using conventional ferromagnetic materials is extremely large. my country's current railway inspection methods are divided into two types: visual inspection and non-destructive inspection. The visual inspection method mainly relies on high-speed photography to obtain rail surface images, and then performs image processin...

AI Technical Summary

Problems solved by technology

The visual inspection method mainly relies on high-speed photography to obtain rail surface images and then conducts image processing to analyze surface defects. Its reliability is low and internal defects cannot be detected.

There are many kinds of non-destructive testing methods, such as eddy current testing, ultrasonic guided wave testing, magnetic flux leakage testing, etc., but most of them use one-dimensional testing methods, and the detected defects cannot be displayed by real-time imaging.

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