作者：刘群, 黄松岭, 赵伟, 陈俊杰

作者单位：清华大学电机系, 电力系统及发电设备控制和仿真国家重点实验室, 北京 100084

关键词：无损评估; 漏磁检测; 海底管道; FPGA; 数据采集

摘要：

针对海底管道内可利用空间小、运行工况恶劣的实际情况,研发一款海底管道缺陷漏磁检测器数据采集系统。该系统选用ARM实现对各功能单元的控制,并以FPGA结合A/D采样芯片进行多路漏磁检测信号的并行采集;通过对各功能单元的一体化和集成设计,在确保能准确有效采集和存储缺陷漏磁信号数据的前提下,实现系统结构的整合及简化。牵拉试验和检测工程应用结果表明:该数据采集系统运行稳定,采集、处理缺陷漏磁检测数据质量高,达到设计要求,完全满足海底油气管道缺陷漏磁检测工程应用的技术要求。

Design of data acquisition system for submarine pipeline magnetic flux leakage detector

LIU Qun, HUANG Songling, ZHAO Wei, CHEN Junjie

State Key Laboratory of Control and Simulation of Power System and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China

Abstract: Aiming at the actual situation of submarine's limited available space and harsh operating conditions, a magnetic flux leakage (MFL) detector data acquisition system was developed. The system used ARM to control each functional unit and chose FPGA combined with A/D sampling chip to realize multi-channel parallel acquisition of MFL detection signal. Through the integration and integrated design of each functional unit, the conformation and simplification of the system architecture was achieved under the premise of accurate and effective MFL signals collection and data storage. Traction test and detection engineering application results show that the data acquisition system is working stablely and that the acquisition and procession of defects MFL testing data are with high quality. The developed system meets the design requirements, fully suffices the technology requirements of submarine oil and gas pipeline MFL detection engineering applications.

Keywords: nondestructive evaluation; MFL; submarine pipeline; FPGA; data acquisition

2015, 41(1): 89-92  收稿日期: 2014-3-23;收到修改稿日期: 2014-5-15

基金项目: 国家自然科学基金项目(51277101);国家“863”重大课题专项(2011AA090301);国家重大科学仪器设备开发专项(2013YQ140505)

作者简介: 刘群(1991-),男,河南商丘市人,硕士研究生,专业方向为无损检测。

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