A VME Based Health Monitoring System

It introduces a VME based health system for monitoring the working status of VME crates in the BEPCII.It consists of a PC and a VME crate where a CMM(Classic Monitor System) is installed.The CMM module is responsile for collecting data from the power suppy and temperature as well as fan speed inside the VME crate and send these data to the PC via the serial port.The author developed EPICS asynchronous driver by using a character-based device protocol StreamDevice.The data is saved into EPICS IOC database in character.Man-machine interface which is designed by BOY displays the running status of the VME crate including the power supply and temperature as well as fan speed.If the value of records display unusual,the color of the value will be changed into red.This can facilitate the maintenance of the VME crates.