公开(公告)号：US5988847A

公开(公告)日：1999-11-23

申请号：US916870

申请日：1997-08-22

申请人： Paul F. McLaughlin ,  Ian K. Canavan ,  Peter C. Davis

发明人： Paul F. McLaughlin ,  Ian K. Canavan ,  Peter C. Davis

IPC分类号： G06F15/177 ,  G05B15/02 ,  G05B19/418

CPC分类号： G05B19/4185 ,  G05B2219/31088 ,  G05B2219/31168 ,  G05B2219/31239 ,  G05B2219/31341 ,  G05B2219/33148 ,  Y02P90/18

摘要： The present invention provides systems and methods for controlling processes of a process facility and, in particular, for distributing data among nodes of a real time process control system controlling such a facility. An exemplary process control system includes a plurality of sensors, controllable devices, and communication paths, and a computer system. The sensors and controllable devices are associated with various ones of the processes of the process facility, and the communication paths couple the sensors and controllable devices to the computer system. The computer system operates on data related to the process facility, and distributes the data among both client and process nodes. The client nodes desire data associated with processes of the facility and the process nodes control such process data. The computer system includes (i) a cache having a short access time for retrieving records, and (ii) a supervisory controller, associated with the client and process nodes, that controls storage of the process data in the cache and selectively transfers the process data from the cache to the client nodes.

摘要翻译： 本发明提供了用于控制过程设备的过程的系统和方法，特别是用于在控制这种设施的实时过程控制系统的节点之间分配数据。 示例性的过程控制系统包括多个传感器，可控设备和通信路径，以及计算机系统。 传感器和可控设备与处理设备的各种过程相关联，并且通信路径将传感器和可控设备耦合到计算机系统。 计算机系统对与处理设备相关的数据进行操作，并在客户端和进程节点之间分配数据。 客户机节点期望与设施的过程相关联的数据，并且过程节点控制这些过程数据。 计算机系统包括（i）具有用于检索记录的短访问时间的缓存，以及（ii）与客户端和处理节点相关联的监控控制器，其控制过程数据在高速缓存中的存储并选择性地传送处理数据 从缓存到客户端节点。