Data display and storage method for steel rail flaw detection operation

A technology for data display and operation, which is applied in the processing of detection response signals, material analysis using sound waves/ultrasonic waves/infrasonic waves, and measuring devices. The effect of improving the effect of flaw detection inspection work

Inactive Publication Date: 2017-08-25
ZHUZHOU TIMES ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a rail flaw detection data display and storage method to solve the existing technical problems of rail flaw detection data display and storage methods with many channels, large data volume, and A display data cannot be saved

Method used

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  • Data display and storage method for steel rail flaw detection operation
  • Data display and storage method for steel rail flaw detection operation
  • Data display and storage method for steel rail flaw detection operation

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Embodiment Construction

[0030] For the sake of reference and clarity, the technical terms, abbreviations or abbreviations used below are recorded as follows:

[0031] Probing wheel: a wheel structure, the center frame of the shaft is equipped with several ultrasonic chips with different detection angles, and the outer film of the tire is filled with coupling fluid. When the locomotive is running, the probing wheel rolls along the rail, and the moving direction of the detection chip is parallel to the rail ;

[0032] A-type display: It is a display method for displaying analog ultrasonic signals through an oscilloscope;

[0033] B-type display: It is a display method that visually displays the information of ultrasonic reflection points inside the rail through images;

[0034] FIFO: First Input First Output, the abbreviation of first-in-first-out memory;

[0035] A / D acquisition: Analog / Digital, short for analog / digital acquisition;

[0036] FPGA: Field Programmable Gate Array, short for Field Prog...

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Abstract

The invention discloses a data display and storage method for steel rail flaw detection operation. A control unit conducts detection, takes a rising edge or a falling edge of a trigger pulse as an initial point, controls a data acquisition unit to acquire ultrasonic drive signals and ultrasonic echo signals located in an effective gate, outputs the signals to a first input first output (FIFO) memory, simultaneously controls a mileage counting unit to read encoder counted mileage corresponding to the initial point, and then outputs fixed-format data formed by combining the encoder counted mileage and the signals acquired by the data acquisition unit to the FIFO memory. A control unit extracts and compresses data cached in the FIFO memory in a segmented mode, and uploads the data into a real-time controller memory. A real-time controller transmits the data in the memory to an upper computer in real time, the data are processed through the upper computer, A-type display data are sent to an A-type display unit to be displayed, and meanwhile, the A-type display data are sent to a storage unit to be stored. By adoption of the data display and storage method for steel rail flaw detection operation, the technical problems that multiple channels for an existing steel rail flaw detection operation data display and storage mode exist, the data size is large, and the A display data fail to be stored can be solved.

Description

technical field [0001] The invention relates to the technical field of rail engineering machinery, in particular to a method for displaying and storing rail flaw detection operation data applied to a rail flaw detection vehicle. Background technique [0002] Large-scale ultrasonic rail flaw detection vehicle is a common detection tool for detecting internal damage of rails. Based on the principle of ultrasonic reflection, the large-scale wheeled rail flaw detection vehicle uses high-voltage excitation pulses to excite ultrasonic probe chips, and the ultrasonic signals generated pass through the detection wheel fluid and wheel film. , The coupling liquid layer is incident on the rail, and the propagation paths of the ultrasonic chips at different angles in the rail are different. For example, figure 1 shown. The ultrasonic signal propagates in the rail, and returns when it encounters damage or rail bottom, and the returned ultrasonic echo signal is processed by digital signa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/44
CPCG01N29/4409G01N2291/2623
Inventor 罗江平李红梁曹经纬夏浪王文星朱红飞邓亦农
Owner ZHUZHOU TIMES ELECTRONICS TECH CO LTD
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