Supervisory and control system for environmental...

H - Electricity – 04 – Q

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341/32.1

H04Q 9/00 (2006.01) G06F 3/04 (1980.01) G06F 15/46 (1980.01)

Patent

CA 1103333

ABSTRACT A system for use in supervising and controlling tem- perature and other environmental conditioning equipment of a building or the like is disclosed. The system monitors and controls various types of sensors and control equipment located at remote field points. The system includes a control console and a number of field located multiplexing modules which are connected to various remote field points. Each of the multi- plexing modules is connected to associated field points that are connected to each other and to the multiplexing module in a single leg circuit. The multiplexing modules and control con- sole are also connected together. The multiplexing modules simultaneously and independently with the control console for an points and only communicate with the control console for an alarm special or changed condition. The field points include common field point modules which interface with any of various field point units which comprises sensors or control field point apparatus. The field point moudles provide identification signals as well as values measured by the field point units to the multiplexing modules upon command.

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