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Space-time four-dimensional wideband array-based high speed steel rail ultrasonic detection imaging method and apparatus thereof

An ultrasonic detection and imaging device technology, which is applied to the analysis of solids using sonic/ultrasonic/infrasonic waves, can solve the problem of narrow bandwidth of the transmitted signal, and achieve the effects of short signal run distance, improved detection accuracy, and low loss.

Inactive Publication Date: 2015-12-09
GUANGZHOU FENGPU INFORMATION TECH CO LTD
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Problems solved by technology

[0010] The purpose of the present invention is to overcome the contradiction between the probe transmission power and the probe diameter of the existing wheeled flaw detection vehicle, and the problem of narrow transmission signal bandwidth when using frequency modulation technology, and propose a high-speed rail ultrasonic detection imaging based on a space-time four-dimensional broadband array device

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  • Space-time four-dimensional wideband array-based high speed steel rail ultrasonic detection imaging method and apparatus thereof
  • Space-time four-dimensional wideband array-based high speed steel rail ultrasonic detection imaging method and apparatus thereof
  • Space-time four-dimensional wideband array-based high speed steel rail ultrasonic detection imaging method and apparatus thereof

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Embodiment Construction

[0047] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings, but the implementation of the present invention is not limited thereto.

[0048] Such as figure 1 , a high-speed rail ultrasonic detection imaging device based on a space-time four-dimensional broadband array, including a detection front end 101 and a background processor 102 . The detection front end 101 and the background processor 102 are connected wirelessly. The background processor 102 is used to generate broadband detection signals and control instructions, send the broadband detection signals and control instructions to the detection front end 101, and then receive the detection echo signals returned by the detection front end 101 for processing and imaging.

[0049] The above-mentioned detection front end 101 is built in the wheel 103 of the rail flaw detection vehicle, and the wheel is filled with coupling fluid 106 . The top of th...

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Abstract

The invention discloses a space-time four-dimensional wideband array-based high speed steel rail ultrasonic detection imaging apparatus. The apparatus comprises a detection front end and a background processor, and the detection front end and the background processor are wirelessly connected. An emission probe array in the detection front end expands to a three dimensional array from a traditional two dimensional probe array, and the emission probe is formed by laminating a wideband large-power ultrasonic energy transducer and a three dimensional funnel-shaped power focusing device, and realizes large power and small-caliber emission, so the contradiction between the emission power and the emission caliber is solved. The ultrasonic energy transducer is made through splicing multiple-frequency range strip-shaped ultrasonic energy transducers, and can flexibly generate a required wideband emission signal. The height and the inclination degree of the power focusing device are adjusted as needed to make a limited space accommodate many probes for forming a probe array in order to improve the detection precision. The apparatus and the method can improve the detection precision in many respects, and meets high speed steel rail detection demands.

Description

technical field [0001] The invention relates to ultrasonic detection technology, in particular to high-speed non-destructive ultrasonic detection technology for rail flaw detection, and in particular to a high-speed rail ultrasonic detection imaging device and method based on a space-time four-dimensional broadband array. Background technique [0002] As an important national infrastructure and the main artery of the national economy, the railway's development and modernization process are related to the realization of my country's economic and social development and modernization goals. Due to the complex condition of my country's railway lines and the large number of overdue rails, the overloaded operation makes the damage rate of railway rails extremely high, which directly endangers the safety of transportation and driving. In order to ensure the safety of railway operation, according to my country's rail flaw detection operation standards, it is necessary to regularly o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/06
Inventor 韦岗王一歌曹燕杨萃刘娇蛟马碧云李杰赵明剑
Owner GUANGZHOU FENGPU INFORMATION TECH CO LTD
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