Method and apparatus for generating elevator car position inform

Details Method and apparatus for generating elevator car position inform Method and apparatus for generating elevator car position inform

1995-12-22

1998-10-13

Nappi, Robert

Elevator, industrial lift truck, or stationary lift for vehicle

With monitoring, signalling, and indicating means

Monitors operational parameter

187316, 187391, B66B 134

Patent

active

058214771

ABSTRACT:
A reflector mounted in an elevator shaft and having coded symbols in two tracks in the region of a stopping floor is read by detectors on the car for bridging door contacts when the car is in the arrival region and the resetting region of the stopping floor. The symbols are detected and evaluated by a two-channel evaluating circuit having optical transmitters for illuminating the tracks and charge-coupled device sensors for detecting the reflected images. A pattern recognition logic system and computers for each channel recognize patterns in the images for generating car position and speed information and for actuating relays to bridge the door contacts.

REFERENCES:
patent: 3963098 (1976-06-01), Lewis et al.
patent: 4427095 (1984-01-01), Payne et al.
patent: 4433756 (1984-02-01), Caputo et al.
patent: 4977984 (1990-12-01), Arnosti et al.
patent: 5135081 (1992-08-01), Watt et al.
patent: 5421432 (1995-06-01), Strambi et al.
patent: 5448049 (1995-09-01), Shafer et al.

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