The Development And Design Of EPICS Real-time Database Based UNIX Operating System

UNIX that is a powerful multi-user and multi-task operating system is applied on all kinds of workstation extensively. Solaris that is published by SUN is a kind of UNIX release and obtains most special users'favor. It has a plenty of device supports and is applied on large workstations and important systems extensively. EPICS is a large control system component software tool. EPICS is composed by three parts which are OPI (Operator Interface) that runs on client and IOC (In/Output Controller) that runs on server and CA (Channel Access). They work in network environment by client/server mode. The client runs on UNIX or Windows NT and the server runs on VxWorks,in addition,on Linux or Solaris.The core of EPICS is a distributed run-time database system that located in the memory regularly and stored run-time datum that is obtained from devices. EPICS provides tools that can manage and access this database system and hundreds kinds of I/O drivers of VME,PLC,GPIB and on-the-spot bus device. Every database record delegated one I/O channel,so when the I/O device is supported by EPICS,the users can collect the data that they require in the database without writing program. EPICS/CA supports TCP/IP protocol,CA software package are both setup on high level clients and servers. Users can read data from IOC databases on different node by transparent communication by EPICS/CA tools,so that data sharing is realized. EPICS/OPI on the clients provides IOC database creating tools and GUI developing tools and device monitor software package.This thesis is based the workstation that is setup Solaris 8 operating system and develops EPICS run-time database. The project of this thesis is study and development of accelerator control system in the Institute of High Energy Physics,Chinese Academy of Sciences.