Marshall I, Neilson J M
J Med Eng Technol. 1984 Jul-Aug;8(4):177-80. doi: 10.3109/03091908409074870.
Despite the increasing sophistication of ECG monitoring and recording equipment, the problem of mains interference and the techniques used to overcome it remain of fundamental importance. This paper presents simplified models of the instrumentation systems most commonly encountered in a hospital environment, concentrating on the ubiquitous isolated amplifier. Empirical values are given for the various parameters, and simple equations are developed to estimate the interference levels in practical situations.
尽管心电图监测和记录设备日益精密，但市电干扰问题以及用于克服该问题的技术仍然至关重要。本文介绍了医院环境中最常见的仪器系统的简化模型，重点关注普遍存在的隔离放大器。给出了各种参数的经验值，并推导了简单的方程式以估算实际情况下的干扰水平。
