摘要
涡流无损检测技术在近年来取得了很大的发展,在工业检测领域有着重要的应用。在涡流检测系统的设计中,最为关键的是对缺陷信号进行提取。目前绝大多数涡流仪器都是基于阻抗分解技术进行缺陷信号的特征提取。在对特征提取技术的原理和实现方法进行了简要阐述的基础上,分析了模拟电路、DSP和传统FPGA实现的不足,提出了在ZYNQ平台上实现该算法的方案。该方案利用了ZYNQ平台的优势,使用软硬件协同设计和IP集成的设计思想,实现快速开发。利用ZYNQ片内互联总线,实现了动态参数可调。采用该方案实现的阻抗分解算法能够降低实现难度,且能够达到显著的缺陷提取效果。
Eddy current nondestructive testing has developed rapidly in recent years and is widely used in industrial inspection area.When it comes to the design of eddy current testing system,the most important part is the extraction of the flaw signal.Nowadays,most of these instruments use the method of impedance decomposition to extract the feature.On the basis of brief introduction of the principle and realization method of feature extraction technology,analyzing the disadvantage of the implementation of the analog circuit,DSP and traditional FPGA,a method of implementing this algorithmon on ZYNQ platform is proposed.This method takes advantage of ZYNQ platform,using hardware-software co-design and IP integration idea to achieve rapid development.With on-chip interconnect bus,dynamic parameters adjustability is realized.The impedance decomposition algorithm with this method can reduces the difficulty to implement,and has an outstanding ability to extract the flaw features.
出处
《微处理机》
2017年第5期65-69,88,共6页
Microprocessors
关键词
涡流无损检测
ZYNQ平台
阻抗分解
软硬件协同设计
数字信号处理
Eddy current nondestructive testing
ZYNQ
Impedance decomposition
Hardware-soft
ware co-design
Digital signal processing
