基于数字信号处理器的电磁探伤系统设计  

Electromagnetic defect detection system design based on digital signal processor

作　　者：何敏[1] 陈斌根[1] 

机构地区：[1]上海海事大学物流工程学院,上海201306

出　　处：《上海海事大学学报》2013年第4期91-96,共6页Journal of Shanghai Maritime University

基　　金：国家自然科学基金(61141002);上海海事大学校基金(20120064)

摘　　要：针对当今工业对钢铁产品能够实现在线检测、实时处理以及提高检测精度和速度的要求越来越迫切,设计双线圈传感器,结合电磁层析成像(Electromagnetic Tomography,EMT)技术,搭建一套基于数字信号处理器(Digital Signal Processor,DSP)TMS320F2812的电磁探伤系统.通过实验验证传感器结构和系统的可行性.实验结果表明,系统可以较好地对金属表面缺陷进行快速检测和定位.该系统可为工业金属缺陷检测提供一种新的检测依据.In view of the increasing requirements on steel products＇ online detection, real-time process- ing as well as the detection accuracy and speed, a dual-coil sensor is designed and an electromagnetic de- fect detection system is set up based on Digital Signal Processor （DSP） TMS320F2812 with Electromag- netic Tomography （EMT） technology. The feasibility of the sensor structure and the system is tested through experiments. The experimental results show that the system can rapidly detect and position de- fects on metal surfaces. The system provides a new method for industrial metal defect detection.

关 键 词：电磁层析成像 电磁探伤 传感器结构 激励频率 数字信号处理器 数据解调 

分 类 号：TG115.284[金属学及工艺—物理冶金]