Method and apparatus for controlling distributed electrical load

Details Method and apparatus for controlling distributed electrical load Method and apparatus for controlling distributed electrical load

1982-02-26

1983-01-04

Griffin, Donald A.

Electrical transmission or interconnection systems

Plural load circuit systems

Selectively connected or controlled load circuits

H02J 310

Patent

active

043674143

ABSTRACT:
An apparatus for controlling distributed electrical loads including a microprocessor based central controller coupled via a twisted pair bidirectional data line to a plurality of microcomputer based transceiver decoders. Each transceiver decoder is coupled to a plurality of relays, each relay associated with a particular load to be controlled. Override switches and sensors, coupled to transceiver decoders provide override requests and information related to ambient conditions at the site of a load. A user defined data base includes sub-sets of relays called sectors, patterns of relay states, remote switches, a time dependent schedule and condition responses. A communication protocall and arbitration scheme provide for interactive communication between the central controller and each transceiver decoder with interfacing with the operation of any other transceiver decoder. Enhanced data storage capacity is achieved through dynamic allocation of memory space for pattern data.

REFERENCES:
patent: 2193595 (1940-03-01), Johnson
patent: 3359551 (1967-12-01), Dennison
patent: 3649873 (1972-03-01), Vlack
patent: 3993977 (1976-11-01), Gilbert
patent: 4107656 (1978-08-01), Farnsworth
patent: 4215276 (1980-07-01), Janeway
patent: 4264960 (1981-04-01), Gurr
patent: 4298939 (1981-11-01), Fluegel

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