Pipeline magnetic flux leakage detection system, data acquisition device and method

Abstract

The invention provides a pipeline magnetic flux leakage detection system and a data acquisition device and method. The pipeline magnetic flux leakage detection system comprises a magnetizing device, a sensing member and the data acquisition device, wherein the sensing element is used for detecting a magnetic signal which is a magnetic flux leakage signal of a magnetic field; the data acquisition device comprises an ARM core module, a storage medium, an FPGA, an AD conversion device, a USB / FIFO conversion device and a power supply management module; the ARM core module is used for storing data acquired by the FPGA to the storage medium; the AD conversion device is used for performing analog-to-digital conversion on the magnetic signal received from the sensing member; the FPGA is used for transmitting the acquired magnetic data to the ARM core module through the USB / FIFIO conversion device according to the magnetic data acquired by the magnetic signal through compression; and the USB / FIFIO conversion device is used for data transmission between the ARM core module and the FPGA.

Description

technical field [0001] The present disclosure relates to the technical field of data acquisition, in particular to a pipeline magnetic flux leakage detection system and method, and a data acquisition device. Background technique [0002] In the prior art, the magnetic flux leakage detection equipment for oil and gas pipelines usually chooses the solution of industrial computer plus peripheral expansion circuit for system control and data acquisition, processing and storage. In other existing technologies, the system is also divided into multiple circuit boards and components according to functions, such as the main control board, acquisition board, storage board, electronic hard disk, etc., and then multiple circuit boards are connected into a whole through connectors. For system control and data acquisition, processing and storage. [0003] In the application, the magnetic flux leakage detection equipment carrying the data acquisition device moves at high speed in oil and ...

AI Technical Summary

Problems solved by technology

Therefore there are multiple hidden dangers in the above-mentioned prior art

For example, due to the large number of industrial computer interfaces (most of which are useless to the system) and the large size, the solution of using the industrial computer computer results in a large system volume and poor seismic performance, which may not be used in small-diameter magnetic flux leakage detection devices. Applicable; the scheme using multiple circuit boards has low integration, and due to the connector, the system stability and reliability are poor, the seismic performance is poor, and the anti-electromagnetic interference ability is also weak

The electronic hard disk is relatively large in size, and the shock resistance of the connector between the electronic hard disk and the circuit board is relatively poor

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