数字超声无损探伤系统中模拟电路的设计实现  

Realization of the Design of Analog Circuit in Digital Ultrasonic Nondestructive Detect System

作　　者：刘岱 张卫 张家科 石志超 LIU Dai;ZHANG Wei;ZHANG Jiake;SHI Zhichao(College of Aeronautical Automation,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学电子信息与自动化学院,天津300300

出　　处：《电子器件》2018年第1期235-239,共5页Chinese Journal of Electron Devices

基　　金：国家自然科学基金委员会-中国民航局民航联合研究基金项目(U1533201);中央高校项目-客舱无线保真通信技术适航可行性研究项目(3122014D023)

摘　　要：在超声波无损探伤原理的基础上,介绍了A型数字超声探伤系统中模拟部分的设计与实现。模拟电路部分包括:激励超声波探头的宽带窄脉冲发射电路,隔离发射和接收的限幅电路,可控增益放大电路以及滤波等信号调理电路。在模拟电路的设计实现中,以STM32和FPGA为控制核心,实现对超声波发射和接收的控制。这些电路采用模块化的设计思想,功能强大、容易实现,具有广泛的应用价值。实验结果表明,这些电路性能良好,稳定可靠。On the basis of ultrasonic nondestructive detection principle,it introduced the design and realization of analog in A-type ultrasonic nondestructive detect system.The analog circuit part contains the broadband narrow pulse transmission circuit that stimulates ultrasonic detector,the limiter circuit that insulates transmitting and receiving,and the signal conditioning circuit of variable gain circuit and filtering.During realization of analog circuit design,STM32 and FPGA were used as the core of control for ultrasonic transmission and receiving.Modular idea of design was adapted for these circuits to achieve the value of wide application with strong function and easy access.The experiment result showed that these circuits were in good performance,stability and reliability.

关 键 词：超声波无损探伤 发射电路 限幅电路 放大电路 滤波电路 

分 类 号：TM930[电气工程—电力电子与电力传动]