Device and method for data acquisition of oil pipeline flux leakage detector

Abstract

A data acquisition device for an oil pipeline flux leakage detector comprises a sensor array, an analog-digital conversion module, a level conversion circuit, a CPLD module and a power circuit. An input end of the sensor array is connected with a detected flux leakage field, a signal output end of the sensor array is connected with a signal input end of the analog-digital conversion module, a signal output end and a control end of the analog-digital conversion module are both connected with a signal input end of the level conversion module, a signal input end of the level conversion module is respectively connected with a signal input end and a control end of the CPLD module, an output end of the power circuit is respectively connected with the sensor array, the analog-digital conversion module, the level conversion circuit and the CPLD module. The data acquisition device for the oil pipeline flux leakage detector achieves the conversion from a three-axis analog signal acquired by the sensor array to a digital signal and transmits the digital signal to the CPLD module, the CPLD module caches the digital signal and transmits the digital signal to the next level, flux leakage detection precision can be improved, and tiny pipe wall defects further can be detected.

Description

technical field [0001] The invention relates to the technical field of electronic information, in particular to a data acquisition device and method for a magnetic flux leakage detector of an oil pipeline. Background technique [0002] Long-distance pipelines are the main way of oil and natural gas transportation. The basic requirements for oil and gas pipeline transportation are safety and efficiency. However, pipeline leakage accidents due to corrosion, wear, accidental damage and other reasons occur from time to time. Therefore, the informatization research of pipeline inspection, analysis and control technology is of great significance to industrial development. [0003] However, the existing magnetic flux leakage detector has low working efficiency and slow acquisition speed due to numerous components and complex structure, so the detection accuracy is low, and the subtle defects of the pipeline cannot be detected. The high energy consumption due to the large number ...

AI Technical Summary

Problems solved by technology

[0003] However, due to the large number of components and complex structure of the existing magnetic flux leakage detector, its work efficiency is low and the acquisition speed is slow, so the detection accuracy is low, and the subtle defects of the pipeline cannot be detected.

The high energy consumption due to the large number of components also makes the detector work for a relatively short time in the case of limited power supply

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