一种基于无线传输技术的板材漏磁检测仪的研制  

R&D of a Wireless Transmission Technology-based Flux Leakage Detection System for Steel Plate

作　　者：闻七男 李清华 冯晓宇 孙毅博 刘世伟 孙燕华[1,2] WEN Qi'nan;LI Qinghua;FENG Xiaoyu;SUN Yibo;LIU Shiwei;SUN Yanhua(School of Mechanical Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;China Special Equipment Inspection and Research Institute,Beijing 100029,China)

机构地区：[1]华中科技大学机械科学与工程学院,湖北武汉430074 [2]中国特种设备检测研究院,北京100029

出　　处：《钢管》2020年第3期73-77,共5页Steel Pipe

摘　　要：研制了一种检测探头和检测结果显示部件分离开来的板材漏磁检测仪,二者之间通过无线传输技术进行数据通信。通过磁回路仿真及磁敏感元件排布实验,确定了磁场分布和磁敏感元件的组合与摆放,进而确定检测仪底盘的整体结构;在底盘上安装无线发射模块,利用无线传输技术将原始的模拟电压信号输送给数据接收分析模块,再通过软硬件的配合处理,即可在显示屏上显示出实时检测波形。利用一块带缺陷的试板对该漏磁检测仪的稳定可靠性进行验证。结果表明,该检测仪信号传输质量可靠,方便应用在复杂的工况环境中,显示波形信噪比与传统的漏磁检测仪无明显差别。Researched and developed is a flux leakage steel plate flaw detector that is designed and structured with the detection probe and the display component separately arranged.And data communication between the two independent parts is realized with the wireless transmission technology.Thanks to the magnetic circuit simulation and the experiment of the arrangement of the magnetic sensitive elements,the optimal magnetic field distribution,and the integration and layout of the magnetic sensitive elements are determined,and in turn the overall structure of the chassis of the detector is determined,too.With a wireless transmission module as mounted on the chassis,and via the wireless transmission technology,the original analog voltage signal is sent to the data reception-analysis module,and then owing to the cooperative processing via relevant software and hardware,the real-time waveforms are indicated on the display screen.Finally,the consistence and reliability of the flux-leakage detector are verified with a defect-bearing reference steel plate.The result shows that the said flux-leakage steel plate flaw detection system is capable of signal transmission with reliable quality,and is convenient for service in complex working environment.The signal-to-noise ratio as produced by this detector is not significantly different from that made by the conventional flux leakage detector.

关 键 词：漏磁检测 板材 无线传输技术 模块化 

分 类 号：TG115.27[金属学及工艺—物理冶金]