Eddy-signal-recognition-technology-based full-automatic data acquisition method

A technology of data acquisition and signal recognition, applied in the direction of material magnetic variables, etc., can solve the problems of reducing system applicability, increasing system components, expanding system volume, etc., and achieves the effects of strong real-time performance, cost saving and high reliability

Inactive Publication Date: 2015-07-01
CHINA NUCLEAR POWER OPERATION TECH +1
View PDF6 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, adding sensors at the end of the catheter tube of the pusher will increase the number of system components, increase the volume of the system, and reduce the applicability of the system. At the same time, since the sensors themselves are electronic devices, there is a risk of failure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Eddy-signal-recognition-technology-based full-automatic data acquisition method
  • Eddy-signal-recognition-technology-based full-automatic data acquisition method
  • Eddy-signal-recognition-technology-based full-automatic data acquisition method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0029] The implementation of this method is as follows:

[0030] ●Step 1. Set the detection boundary and the data recording boundary, and establish the characteristic signal model of the eddy current digital signal at the above boundary;

[0031] The above model can be obtained through theoretical analysis or actual detection; the above signal model will be used as the matching condition for the start and stop of the signal acquisition process during the movement of the probe;

[0032] Such as figure 1 As shown, in this embodiment, a graph that is easy to identify and compare is drawn based on the eddy current signal. Of course, in the process of using a computer to automatically determine, such a more complicated graph may not be used, but only the signal amplitude is used to determine Alternatively, those skilled in the art can choose according to their needs, for example, Image 6 As shown.

[0033] ●Step 2, control the probe to enter the pipe under test from the nozzle and move i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the field of the non-destructive testing technology for a nuclear power station and in particular relates to an eddy-signal-recognition-technology-based full-automatic data acquisition method. The eddy-signal-recognition-technology-based full-automatic data acquisition method comprises the following steps: 1. setting the detection boundary and the data recording boundary and building characteristic signal models of eddy digital signals at the boundary positions; 2. controlling a probe to enter a to-be-detected pipeline through a pipe opening and move inwards at designated speed; 3. acquiring an eddy digital signal in real time by an eddy current instrument, and when the acquired signal is matched with the characteristic signal for detecting the boundary, stopping advancing; 4. starting to acquire data automatically, enabling the probe to move back from the to-be-detected pipeline outwards after the probe reaches the detection boundary, simultaneously, starting to acquire the signal automatically until the probe reaches the recording boundary; and 5. stopping automatic data acquisition, after the probe reaches the recording boundary, stopping data acquisition, and enabling the probe to move back out of the to-be-detected pipeline. Compared with the method that a sensor is additionally arranged at the pipe end of a push-pull device, the signal-recognition-based positioning method can save the cost and has high reliability.

Description

Technical field [0001] The invention belongs to the technical field of non-destructive testing of nuclear power plants. Background technique [0002] The heat transfer tube of the steam generator is a key component of the integrity of the pressure boundary of the primary circuit of a nuclear power plant. At the same time, it is the weakest link in the entire loop. At present, the most effective way to detect the heat transfer tube is eddy current nondestructive testing. [0003] The entire eddy current detection system is usually composed of multiple subsystems, which can be divided into three parts: signal system, positioning scanning system and auxiliary system. The signal system mainly includes eddy current signal acquisition system, eddy current signal analysis software, eddy current instrument, probe and other related components. In the eddy current testing process, signal acquisition is a prerequisite for the whole process. The signal acquisition software integrates software...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/90
Inventor 冯美名韩捷聂炜超杜振坤廖述圣
Owner CHINA NUCLEAR POWER OPERATION TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap