心电信号(ECG)放大处理器是心电图仪、病人监护仪、多道生理仪以及心脏急救装置等医用电子仪器的基本功能单元。心电信号的幅值在1mV左右,频谱分布在0.05～100Hz。主要频谱分量集中在0.5～20Hz,它淹没在人体静电、电极化电势和工频干扰之中。从人体中检取ECG,除了要克服上述电干扰外,还要克服肌体电阻、皮肤电阻、皮肤分泌液电阻以及皮肤分泌液和皮肤角质层下肌体组织间存在的电容效应。由于心电放大器通过电极直接与人体接触,有一个如何保证病人安全的问题,所以心电放大和处理的设计有其特殊性。世界各国工程技术人员近年来设计了多种电路方案,力求获得失真小、信噪比高的信号。本文介绍一种新颖的电路设计。其特点是采用8031 The ECG Amplifier Processor is a basic functional unit for medical electronic devices such as electrocardiographs, patient monitors, multi-channel physiology and cardiac emergency devices. ECG amplitude of about 1mV, the spectrum distribution at 0.05 ~ 100Hz. The main spectral components concentrated in the 0.5 ~ 20Hz, it submerged in the human body electrostatic, electric potential and frequency interference. In addition to overcoming the electrical interference described above, ECG retrieval from a human body overcomes body resistance, skin resistance, skin exudate resistance, and the capacitive effect that exists between the skin exudates and the body tissues beneath the cuticle of the skin. As the ECG amplifier contacts the human body directly through the electrode, there is a problem of how to ensure patient safety. Therefore, the design of ECG amplification and treatment has its own particularity. In recent years, engineering technicians from all over the world have designed many kinds of circuit schemes and strive to obtain signals with small distortion and high signal-to-noise ratio. This article describes a novel circuit design. It is characterized by the use of 8031