振动监测是目前国内外用于机械设备工况监视方面的主要方法之一。本文介绍的四通道振动巡回监测仪是将传感器输出的信号经前置处理、检波、压频变换后送AT89C2051单片机计数并显示输出。它被设计成适用于工业现场重要辅机的长期监测，可选择电涡流位移型和磁电速度型两种传感器，所显示数值也可以根据需要选择位移或速度量纲，具有精度高，稳定性好，免维护的特点。 Vibration monitoring is one of the main methods used to monitor condition of machinery and equipment at home and abroad. This article describes the four-channel vibration circuit monitor is the sensor output signal pre-processing, detection, frequency conversion AF89C2051 SCM to send and display the count output. It is designed to be used for long-term monitoring of important auxiliary industrial site, the choice of eddy current displacement type and magnetoelectric velocity type two sensors, the displayed values ​​can also be selected according to the need of displacement or speed dimension, with high precision and stability Good, maintenance-free features.