Low-power consumption intelligent three-dimensional magnetic leakage detecting probe

A technology of magnetic flux leakage detection and low power consumption, which is applied in the field of three-dimensional probes, can solve the problems of low resolution and high power consumption, and achieve the effects of improving resolution, reducing power consumption, and solving battery capacity bottlenecks

Inactive Publication Date: 2011-09-21
中机生产力促进中心有限公司
View PDF4 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of low resolution and high power consumption of existing pipeline magnetic flux leakage detector probes, and p

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
  • Low-power consumption intelligent three-dimensional magnetic leakage detecting probe
  • Low-power consumption intelligent three-dimensional magnetic leakage detecting probe
  • Low-power consumption intelligent three-dimensional magnetic leakage detecting probe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Embodiments of the present invention are described in detail below in conjunction with accompanying drawings:

[0022] Refer to attached Figure 4 And attached Figure 5 In the Hall sensor array shown, each group of three sensors measures the three-dimensional magnetic field at a point in space, the first row of sensors measures the magnetic field strength in the Z direction, the second row of sensors measures the magnetic field strength in the X direction, and the third row of sensors measures the magnetic field strength in the Y direction , thereby achieving the figure 2 Three-dimensional measurement of the leakage magnetic field at a point in the space shown. attached image 3 The analog switches S1 and S2 shown respectively switch the power supply and sampling of each Hall sensor to realize time-sharing power supply and sampling in rotation. The voltage follower isolates the output voltage of the sensor and the A / D chip to achieve impedance matching, which is b...

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 provides a low-power consumption intelligent three-dimensional magnetic leakage detecting probe, which is applied to magnetic leakage detecting equipment for defects such as the corrosion, the cracks and the like of a long-distance transmission pipeline, can realize high-precision multi-sensor detection (1,500 to 4,000 sensors) and low power consumption (one thirtieth to one two hundredths of the conventional equipment), and solves the key problem of the battery capacity of a magnetic leakage detector. The probe consists of a Hall sensor array, a time-sharing power supply module, a signal processing module and an intelligent controller, wherein the Hall sensor array is used for measuring magnetic leakage intensity in an X direction, a Y direction and a Z direction; the time-sharing power supply module is used for only supplying power to sampling sensors in a time-sharing mode so as to realize the low power consumption; the signal processing module is used for signal filtering, analogue/digital conversion and the like; the intelligent controller is a complex programmable logic device (CPLD), realizes time-sharing power supply control, data acquisition, data transmission and communication, and has high interference resisting capability.

Description

technical field [0001] The invention relates to a three-dimensional probe of magnetic flux leakage detection equipment for defects such as corrosion and cracks in long-distance oil and gas pipelines, which is used for detecting the shape and depth of defects. Background technique [0002] Due to reasons such as corrosion, fatigue cracks and accidental damage, the leakage of long-distance oil and gas pipelines occurs from time to time, which not only causes huge economic losses, but also causes serious pollution to the environment. In the process of pipeline operation and maintenance, efficient and reliable detection technology is of great significance for the assessment and prediction of accident hazards, maintenance and pipeline safety. [0003] The basic principle of magnetic flux leakage detection is to use an external magnetic field to magnetize the pipeline material. When the material is defective, the magnetic permeability will change, resulting in the bending and dist...

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
IPC IPC(8): G01N27/83G01B7/28G01B7/26
Inventor 刘红旗胡铁华曹熙黄平江张俊杰吴哲
Owner 中机生产力促进中心有限公司
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