Novel vortex data acquisition system

Abstract

The invention relates to a novel vortex data acquisition system which comprises a control unit, an image data photographing unit, a DSP (digital signal processing) module, a double-port RAM (random access memory) module, a singlechip module and data acquisition and communication system software, wherein the control unit is connected with the DSP module, the image data photographing unit, the double-port RAM module, the singlechip module and a data acquisition module respectively through signal wires; the DSP module comprises three parts, namely a data input part, a data conversion part and a data processing part; the image data photographing unit comprises photographing equipment and a data processing module; the image data photographing unit is connected with the DSP module through the signal wire; the data processing module processes a binary image input by the photographing equipment; a defect single segment is used for processing and detecting the image and is a region consisting of continuous black pixels on a certain scanning row of the image; the defect signal segment internally comprises a left end point and a right end point. According to the novel vortex data acquisition system, a high-performance fixed-point DSP chip is used as a master processing unit; a high-speed singlechip is used as a slave processing unit; the advantages of high DSP data processing capacity, high singlechip interface management capacity and rich peripheral resource are fully developed, so that each of the two processors performs the own function, and function compensation is realized.

Description

technical field [0001] The invention relates to a nondestructive testing method, in particular to a novel eddy current data acquisition system. Background technique [0002] After long-term operation of mechanical equipment, its load-bearing structure and key components are prone to defects such as fatigue cracks, which will seriously affect the normal operation of the equipment and even lead to personal safety accidents. Crack detection is one of the issues that must be given sufficient attention in the machinery industry to ensure that cracks can be effectively detected before they pose a threat. Eddy current testing is a non-destructive testing technology that has developed rapidly in recent years. It has the advantages of simple structure, non-contact measurement, high sensitivity, good frequency response characteristics, and is not affected by oil pollution. It is especially suitable for fatigue cracks and stress cracks on the surface of metal components. Elm test. Fo...

AI Technical Summary

Problems solved by technology

[0002] After a long period of operation of mechanical equipment, its load-bearing structure and key components are prone to defects such as fatigue cracks, which will seriously affect the normal operation of the equipment and even lead to personal safety accidents