X-ray on-line detection probe of steel wire rope core conveyor belt and signal acquisition and processing method

Abstract

The invention relates to an X-ray on-line detection probe of a steel wire rope core conveyor belt and a signal acquisition and processing method. The X-ray on-line detection probe of the steel wire rope core conveyor belt belongs to the field of non-destructive X-ray on-line probing equipment. Hardware design of the X-ray on-line detection probe of the steel wire rope core conveyor belt is as follows: a photoelectric conversion module is used for realizing conversion from X-ray signals to electrical signals; four lines of A / D (analog / digital) modules are used for realizing sampling from analog signals to digital signals; and a signal acquisition and processing module in the structure of an ARM (advanced RICS (reduced instruction set computing) machine and an FPGA (field programmable gate array) is used for realizing the control of the A / D modules and the processing of image element data. The signal acquisition and processing method comprises the following steps: using the FPGA to adopt a state machine to realize the sampling control of the four lines of the A / D modules; adopting a three-point sectional image element non-homogenization correction algorithm based on a response model to realize homogenization processing of the image element data in the FPGA; and figuring out a coefficient of the correction algorithm through the ARM and performing median filtering processing on the image element data after completing the correction. By adopting the probe in the invention, the high-precision dynamic real-time detection of the conveyor belt can be realized, thereby facilitating diagnosis of elongation, rust, fracture and other situations of a joint of a steel rope core.

Description

technical field [0001] The invention belongs to the field of non-destructive X-ray on-line detection equipment, in particular to an X-ray on-line detection detector for a steel wire rope conveyor belt and a signal acquisition and processing method thereof. Background technique [0002] Australian scholar A. Harrison first proposed a method for non-destructive testing of strong conveyor belts based on the principle of electromagnetic induction, and developed a CBM strong conveyor belt steel rope core detection device. This method was used in the mining industry in Germany, South Africa, Canada, the United States, etc. during 1982-1987. The application of this technology makes it possible to detect dangerous and high-tension steel cord conveyor belts. my country's Institute of Mechanics of the Chinese Academy of Sciences, Shanghai Branch of the General Academy of Coal Science, and Taiyuan Institute of Technology have developed a strong conveyor belt steel rope core detection ...

AI Technical Summary

Problems solved by technology

However, the existing detection methods have shortcomings such as poor reliability, inaccurate positioning, slow scanning speed, and inability to perform remote real-time detection of strong conveyor belt images, so this procedure has not been well implemented

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