Railway track crack detection system based on gated CMOS

Abstract

The invention discloses a railway track crack detection system based on a gated CMOS, and relates to the technical field of track damage detection, in particular to the railway track crack detection system based on the gated CMOS, which mainly comprises a time schedule controller, a laser, an illumination light path, an optical filter, a collection light path, a detector, an image processing module, a display module and the like. According to the railway track crack detection system based on the gated CMOS, a narrow linewidth laser is adopted as an illumination light source, and the laser is high in brightness and rapid in response, so that the signal-to-noise ratio of an image is high; the coherence of the laser is reduced by adopting an illumination light path, so that the laser speckle effect is effectively inhibited; and a global exposure shutter of the detector is adopted, so that image smear-free under high-speed movement is realized, the and continuous detection of track cracks is further realized.

Description

technical field [0001] The invention relates to the technical field of track damage detection, in particular to a railway track crack detection system based on gated CMOS. Background technique [0002] With the progress of society, higher and higher requirements are put forward for transportation. Railway transportation occupies an important position in the transportation mode, and the track affects the safety of passengers and goods during the railway transportation process. Track cracks are a common form of track damage, which has the characteristics of high risk and high concealment. [0003] The existing track crack detection technology mostly adopts echo detection and TDI synchronous technology. The echo detection technology often needs to be realized in combination with a detection vehicle. The existing detection vehicle usually runs alone or is mounted on a low-speed train, and cannot be mounted on a The detection is carried out on a 100km / h train, and the transport ...

AI Technical Summary

Problems solved by technology

[0003] The existing track crack detection technology mostly adopts echo detection and TDI synchronous technology. The echo detection technology often needs to be realized in combination with a detection vehicle. The existing detection vehicle usually runs alone or is mounted on a low-speed train, and cannot be mounted on a The detection is carried out on a 100km / h train, and the transport vehicles need to be temporarily suspended in the detection section, which limits the travel time of ordinary trains, especially high-speed trains; TDI synchronization technology requires that the speed of the detector is strictly consistent with the moving speed of the target. In actual engineering, TDI synchronization technology has excellent performance in the scene where the target moves at a fixed speed. In order to meet the needs of the use of TDI synchronization technology, the TDI camera is often mounted on the inspection vehicle, and the relatively ideal is achieved by controlling the inspection vehicle at a uniform speed. In fact, due to changes in road conditions, even railways within 100 kilometers will have different speed recommendations, which requires technicians to change parameters frequently, which brings great challenges to continuous track detection and long-distance detection. Big inconvenience, for this reason we propose a railway track crack detection system based on gated CMOS to solve the problems raised above

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