生物医学信号测量实验系统设计

摘要

“Biomedical signal processing”is a required course for major of biomedical engineering.The course contains not only a large amount of theoretical knowledge,but also practical content of which the biomedical signal measurement is the most basic link.By the analysis of the characteristics of biomedical signals,the experimental system is designed and implemented including ECG,blood pressure,body temperature,respiration,pulse and other common human medical signal measurement,and also including sensor selection for various physiological signals, design of preamplifier and filter circuit,and the measurement software on PC based on LabVIEW by NI USB6008.The system can realize the parallel acquisition and storage of multiple physiological signals,establish the experimental foundation based on MATLAB for the digital signal processing.It has achieved good results in the experimental teaching practice of Biomedical Signal Processing course.%通过分析生物医学信号的特点，设计并实现了包括体温、心电、血压、呼吸、脉搏等常见人体医学信号测量的实验系统，包括针对各种不同生理信号所用的传感器的选择、对应前置放大滤波电路的设计，以及通过 NI USB6008实现基于 LabVIEW 的上位机测量软件。该系统实现了多种生理信号的并行采集与存储，为后期基于 Matlab 的数字信号处理建立实验基础，在生物医学信号处理等课程的实验教学实践中取得了良好的教学效果。