摘要
人体的心电信号是一种低频率的微弱信号,而心电信号的测量环境很复杂,在采集过程中不可避免地会混入各种干扰信号,因此要求采集系统具有高抗扰特性。文中详细介绍了基于P89LPC938微控制器的心电信号采集及处理系统,给出了一种实用的心电信号采集和调理电路,介绍了小波变换在心电信号处理中的应用,应用结果表明该系统具有硬件简单、成本低廉、精确度高等特点。
ECG signals are weak signals with low frequency, and the measure environment is very complicated so that it is unavoidable that several kinds of interference will be introduced. So the acquiring system must have the feature of high anti-jamming. This paper presents a system for acquiring and processing ECG signals based on P89LPC932 in detail, and offers a circuit for acquiring and conditioning ECG signals, and it also presents the application of wavelet transform in processing ECG signals. The application has indicated the system is simple in hardware, high accurate, and has a low cost.
出处
《电子工程师》
2005年第12期26-28,共3页
Electronic Engineer
