Supervisory and control system for environmental conditioning eq

Details Supervisory and control system for environmental conditioning eq Supervisory and control system for environmental conditioning eq

1975-10-24

1978-05-16

Thomas, James D.

Boots, shoes, and leggings

340163, 340147R, 165 22, 236DIG8, G06F 304, G06F 1546, H04Q 900, H04Q 1100

Patent

active

040902480

ABSTRACT:
A system for use in supervising and controlling temperature 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 multiplexing 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 console are also connected together. The multiplexing modules simultaneously and independently poll their associated field 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 comprise sensors or control field point apparatus. The field point modules provide identification signals as well as values measured by the field point units to the multiplexing modules upon command.

REFERENCES:
patent: 3400374 (1968-09-01), Schumann
patent: 3403382 (1968-09-01), Frielinghaus
patent: 3427588 (1969-02-01), Mauzey
patent: 3522588 (1970-08-01), Clarke, Jr.
patent: 3529293 (1970-09-01), Sullivan
patent: 3559177 (1971-01-01), Benson
patent: 3622992 (1971-11-01), Schoenitz
patent: 3622994 (1971-11-01), Schoenitz
patent: 3626370 (1971-12-01), Stubbs
patent: 3644894 (1972-02-01), McCrea
patent: 3697953 (1972-10-01), Schoenwitz
patent: 3716096 (1973-02-01), Berrett
patent: 3760374 (1973-09-01), Nabi
patent: 3828313 (1974-08-01), Schull
patent: 3845472 (1974-10-01), Buchanan
patent: 3854122 (1974-12-01), Cross
patent: 3896871 (1975-07-01), Pecoraro

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