一种用于人体脉搏的信号采集系统  

A Collecting System for the Pulse Signal of Human Body

作　　者：罗山鹰[1] 娄文忠[1] 

机构地区：[1]北京理工大学机电工程学院,北京100081

出　　处：《兵工自动化》2001年第2期57-58,共2页Ordnance Industry Automation

摘　　要：根据人体脉搏信号特征，提出了一种脉搏采集方案。该方案的系统总体结构由PVDP型脉搏传感器及其信号放大电路、AD574转换芯片和接口、以及脉搏信号数字处理计算机等构成。并介绍了PVDP传感器结构及其电源电路、AD574芯片特性和增强型并口协议（EPP）。讨论了脉搏数字处理时，为消除噪声干扰所采用的移动平均滤波器和为消除随机干扰所采用的LMS自适应滤波器的软件实施过程和处理效果。On the base of analyzing the character of the pulse signal of human body, a project for collecting the pulse signal was brought forward. This project is make up of PVDP pulse sensor and it's signal amplification circuit, and the chip AD574 and interface circuit, and the digital computer for signal processing. The structure of PVDP pulse sensor and it's power circuit, the character of chip AD574, and the enhance parallel protocol is introduced. In the process of data processing, the processing processes and effects of the numerical filter used to remove yawp disturbing and the LMS adaptive filter used to remove random disturbing is realized with software.

关 键 词：信号采集 增强型并口协议 AD574 LMS自适应滤波 人体脉搏 PVDP传感器 中医 

分 类 号：R241.1[医药卫生—中医诊断学] TP274.2[医药卫生—中医临床基础]