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.
出处
《上海海事大学学报》
北大核心
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)
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
electromagnetic tomography
electromagnetic defect detection
sensor structure
exciting frequency
digital signal processor
data demodulation
