计算机技术与发展2013，Vol.23Issue(7)：211-213,217,4.DOI:10.3969/j.issn.1673-629X.2013.07.054
基于STM32与FPGA的导波激励源设计
Design of Excitation Source Circuit for Guided Waves Based on STM32 and FPGA
摘要
Abstract
A signal generator,used for exciting ultrasonic guided waves in pipeline is designed based on STM32 and FPGA.The excitation source consists of STM32,FPGA,D/A conversion circuit and a low pass filter circuit.Based on DDS,the design method of DDS module is elaborated.STM32 and FPGA interface circuit,D/A conversion circuit and the filter circuit are designed.STM32 is the central processor and primarily responsible for transmitting frequency control word.FPGA is mainly used to generate DDS waveform.The output data of FPGA are converted by a D/A,then go through low-pass filter,to get the needed signal.The experiment results show that the output signal is low noise,high precision and the frequency can be set as required.It can be conveniently used to ultrasonic guided wave detection in pipeline.关键词
STM32/FPGA/DDS/超声导波/激励信号Key words
STM32 /FPGA/ DDS/ ultrasonic guided waves/ exciting signal分类
信息技术与安全科学引用本文复制引用
靳小强,王建斌,李建增,敬人可..基于STM32与FPGA的导波激励源设计[J].计算机技术与发展,2013,23(7):211-213,217,4.基金项目
军内科研项目(装司[2010]530号) （装司[2010]530号）
