基于StreamDevice的VME机箱监测及其应用研究

Study of Stream Device Based VME Chassis Monitoring and its Implementation

VME总线具高可靠性与稳定性的优点,使得其在加速器控制中得到了广泛应用。Stream Device是EPICS的一个通用设备支持模块,用来与支持字节流的设备进行通信。由于加速器运行的需要,很有必要对VME机箱的当前运行状态进行实时监测。Schroff公司提供的CMM模块,可用于监测VME机箱或CPCI机箱的状态。以VME机箱为例,阐述了如何使用CMM模块对机箱状态进行监测及利用Stream Device把状态变量接入到EPICS系统中的方法,并简单介绍了在CSNS定时系统中的应用。

VME bus base devices are widely used in accelerator control system due to its high reliability and sta-bility.StreamDevice is a generic device support for devices with a ＂byte stream＂based communication inter-face.It is necessary to monitor the status of VME chassis during the operation.The CMM module, which was provided by Schroff, can be used to monitor the status of VME bus or CPCI bus chassis.Taking the VME chas-sis as example, the method for monitoring chassis status using CMM module and porting status information to EPICS using StreamDevice was described in this paper.Furthermore, its implementation in CSNS timing system was briefly introduced.