摘要
圆柱形金属试件的阵列涡流检测可以通过几个围绕试件布局的阵列线圈组成的探头来完成,阵列涡流探头由完全相同的8个线圈组成并在一定的空间结构下完成对金属试件的探测。设计1个基于Zynq-7020的阵列涡流检测系统,该系统借助激励通道的8个模拟开关可以对一个或多个线圈进行激励,借助一个8选1模拟开关可以对8个阵列线圈进行分时采集,通过数字相敏检波算法完成对信号的提取。试验结果表明,此系统可以保存、传输、处理阵列探头的激励信号和感应信号,并完成测量阵列探头灵敏度的试验任务。
The array eddy current detection of cylindrical metal specimen can be completed by several probes composed of array coils arranged around the specimen.The array eddy current probe is composed of exactly eight coils and completes the detection of metal specimen under a certain spatial structure.An array eddy current testing system based on Zynq-7020 is designed to excite one or more coils with the help of 8 analog switches of the excitation channel.With the help of an 1-in-8 analog switch,8 array coils can be acquired in time.The signal is extracted by digital phase sensitive detection algorithm.The test results show that the system can save,transmit and process the excitation signal and induction signal of the array probe and complete the test task of measuring the sensitivity of the array probe.
作者
蒋青松
张志杰
Jiang Qingsong;Zhang Zhijie(Key Laboratory of Instrumentation Science&Dynamic Measurement Ministry of Education,North University of China,Taiyuan 030051,China)
出处
《电子技术应用》
2023年第1期52-57,共6页
Application of Electronic Technique
