Local area network eleveator communications network

Details Local area network eleveator communications network Local area network eleveator communications network

1993-06-01

1994-11-01

Stephan, Steven L.

Elevator, industrial lift truck, or stationary lift for vehicle

Inclined elevator

Having linking cable tension change actuated stopping means...

187277, 187391, B66B 300

Patent

active

053609522

ABSTRACT:
A LAN elevator network includes (a) a pair of redundant car buses for exchanging signals with car control system elements, (b) a pair of redundant group buses for exchanging signals with the redundant car buses by means of a car-group bridge, and (c) with a pair of redundant building buses, which exchange messages with a building controller, by means of a group-building bridge. Communication among all nodes on the car bus, group bus, and building bus occurs by means of a single protocol. Each communications element on a bus communicates with the bus by means of a communications coprocessor including a transmitter and a receiver.

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patent: 4570220 (1986-02-01), Tetrick et al.
patent: 4683989 (1987-08-01), Pillage et al.
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patent: 4765442 (1988-08-01), Blain et al.
patent: 5202540 (1993-04-01), Auer et al.
patent: 5210750 (1993-05-01), Nassehi et al.

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