摘要
该文对生物信号——心电和呼吸信号的调理、采集和处理进行了分析和设计。系统硬件主要对信号进行放大滤波,以AD620为放大电路的核心器件;以8051作为微处理器控制芯片;AD转换器采用12位的串行输出芯片TLC2543;单片机与计算机的通讯采用串行接口。系统软件采用LavVIEW图形编程环境,分析了信号的频谱特性;着重对心电信号进行了识别,能自动计算出心电信号的特征参数值,并作出相应的病况诊断;信号数据、特征参数及诊断结果可以由用户设定存入相关数据库。该系统是基于计算机技术的采集处理系统,系统的功能可以灵活定义,便于满足用户要求。而且系统具有良好的人机界面,操作方便。
In this paper,it analyzed and designed how to condition,sample and process biologic signal,such as electrocardiosignal,respiration signal.The main function of the hardware is to amplify and filter signals.In this system,AD620 is the core device of the amplification;8051 is used as microprocessor;TLC2543 is used as the AD converter which is a 12-bit-resolution chip with serial peripheral interface;and the communication between the microprocessor and the computer is working by serial interface.The system's software is programmed by LabVIEW which has graphic programming environment.It analyzed the spectrum character of the signals.Speciallly,electrocardiosignal can be identified,the system can compute the values of the character parameters of electrocardiosignal and give the diagnostic result correspondingly.The information including the data of the signals,the values of the character parameters and the diagnostic result can save into the relative database.Because it is based on computer,the system's function is flexibly defined and meets users' requirement easily.And the system have good man-machine interface,and easy operation.
出处
《电脑知识与技术（过刊）》
2009年第5X期3806-3808,共3页
Computer Knowledge and Technology
