Redundancy system switching control system

Details Redundancy system switching control system Redundancy system switching control system

1992-12-02

1994-09-13

Gaffin, Jeffrey A.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Connecting or disconnecting

307 43, H02J 400

Patent

active

053471652

ABSTRACT:
A redundancy system switching control system includes two packages and logic circuits. The two packages are alternately switched as an operating system package and a standby system package. The logic circuits are arranged on the two packages, respectively, and each of the logic circuits outputs selection information
on-selection information to a remote package using self-package alarm information, self-package forcible switching information, remote-package alarm information, and selection information
on-selection information as four inputs. Each of the logic circuits, when a self-package serves as the operating system package, outputs selection information to the remote package by receiving any one of non-selection information from the remote package and the self-package alarm information when the self-package does not receive the remote-package alarm information. Each of the logic circuits, when the self-package serves as the standby system package, outputs non-selection information to the remote package by receiving any one of selection information from the remote package and the self-package forcible switching information.

REFERENCES:
patent: 4757474 (1988-07-01), Fukushi et al.
patent: 5027002 (1991-06-01), Thornton
patent: 5204836 (1993-04-01), Reed

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