Patent ID: 6144993
Filing Date: 2000-11-07
Classification: G05B,G06Q,H04L

Abstract:
A building automation system comprising a system management computer, distributed process controllers connected through a network to the system management computer, and terminal units connected to the distributed process controllers through control signal lines, the terminal units including controlling terminals for controlling facility loads and monitoring terminals for monitoring states of such input elements as sensors and switches;the distributed process controllers respectively comprising a common platform in which programs capable of operating and controlling hardwares are standardized, a common function package having a function of delivering data to one of object data, event data and application program performing a processing on the basis of the one of the object and event data, and a per-usage package comprising application programs respectively for every usage and exchangeable in accordance with the usage and scale of the system;wherein the distributed process controllers perform the monitoring and controlling of the respective terminals, and giving and reception of monitoring data and controlling data on the facility loads through the network between the system management computer and the distributed process controllers or mutually between the respective distributed process controllers.