Real-time broken-rail detecting and positioning system based on ultrasonic guided waves

An ultrasonic guided wave and positioning system technology, applied in radio wave measurement systems, re-radiation of sound waves, analysis of solids using sonic/ultrasonic/infrasonic waves, etc. high effect

Active Publication Date: 2014-09-03
杨媛
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects in the prior art and provide a real-time broken rail detection and positioning system based on ultrasonic guided waves. The position and the size of the damage solve the problem that the existing technology cannot detect and locate the broken rail in real time for a long distance. expensive question

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  • Real-time broken-rail detecting and positioning system based on ultrasonic guided waves
  • Real-time broken-rail detecting and positioning system based on ultrasonic guided waves
  • Real-time broken-rail detecting and positioning system based on ultrasonic guided waves

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Embodiment Construction

[0030] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] refer to figure 1, a real-time broken rail detection and positioning system based on ultrasonic guided waves, which adopts a detection method in which transmitting and receiving positioning nodes and receiving positioning nodes are arranged alternately, and a terminal node is set at one end of the detection area. On the rail, the transmitting and positioning nodes are fixed on the rail The ultrasonic probe on the rail waist transmits the excitation signal, and the excitation signal is converted into a high-power ultrasonic guided wave signal through the piezoelectric ceramics in the ultrasonic probe. Received by the ultrasonic probe, the probe converts the vibration signal into an electrical signal, and the receiving board circuit performs filtering and amplification on the signal, signal characteristi...

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Abstract

The invention discloses a real-time broken-rail detecting and positioning system based on ultrasonic guided waves. The real-time broken-rail detecting and positioning system based on ultrasonic guided waves is composed of a solar power supply or wired power supply system, an ultrasonic probe, a transmission positioning node, a receiving positioning node, an end node and an upper computer terminal. By using the system, whether a long-distance steel rail is damaged or broken can be detected in real time, the accurate position and damage size of a broken rail can be detected, and the problem that the long-distance broken rail cannot be detected or positioned in real time in the prior art is solved; in addition, the transmission of alarm data of all of the nodes is realized by adopting ultrasonic guided wave signals based on a steel rail transmission medium, and the problems of poor signals and high cost of the existing communication technology are solved.

Description

technical field [0001] The invention belongs to the technical field of nondestructive testing, and relates to a real-time broken rail detection and positioning system based on ultrasonic guided waves. Background technique [0002] Since the birth of rail transit, broken rails have always been the primary problem affecting the safety of rail transit. With the development of the economy, the trend of high-speed railway passenger transportation and heavy-duty freight transportation is becoming more and more obvious. In the railway transportation system, the rails play the role of supporting the train and guiding the train wheels forward. When the wheel set passes through the rail joint, the train accelerates or brakes, and passes through the branch, the rail will be subjected to friction, extrusion and impact forces from all directions. Very prone to injury. Rail line maintenance, natural disasters and weather conditions and other external factors are also prone to breakage,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/11G01S15/06
Inventor 杨媛刘正祥
Owner 杨媛
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