Westinghouse Electric Corporation

Wing C Quan

Richard H Ludwig

Alan L Husson

Roger Graham Byford

Michal M Feilchenfeld

George T Hummert

Marjorie J Polis

David M Edison

Linus R Dirnberger

Milton Sackin

A voice-controlled elevator security system. Access to an elevator system servicing a plurality of landings of a structure is controlled by comparing a voice signal of a potential user of the elevator system with stored voice signals of all authorized users. The comparison is accomplished by first digitizing the potential user's voice signal and comparing it, on a bit-by-bit basis, with a digital representation of the voice signals of all authorized users. Various criteria can be established for determining the number of binary bits that must agree to conclude that the potential user is an authorized user. Once this determination has been made, the authorized user can initiate car call signals for those landings to which the authorized user is permitted access.

Voice-recognition elevator security system

A universal, programmable interface for interconnecting printed circuit boards and discrete wires. Standard card-edge connectors and standard cables interconnect one or two bytes of i/o signals between the pc boards and the programmable interface, with the interface being programmed by jumpers to interconnect the desired contact fingers of the interface with screw-type terminations for receiving discrete wires.

Universal programmable interface

A method of reinitializing an elevator system upon the return to service of an elevator car following the occurrence of an event which could result in the car stopping in the hatch without regard to floor level. The method includes the steps of determining if the elevator car is within a predetermined small distance from any floor, and if it is, the advanced car position is set to that floor. If the elevator car is not within this predetermined distance from a floor, the advanced car position is set to the closest floor in a predetermined travel direction, such as the travel direction of the car at the time of the event which terminated normal operation. The car is then moved to a predetermined floor, which is the floor of the advanced car position when there are no registered hall calls, and the floor of a predetermined car call, or hall call, where there is a registered call.

Elevator system

An elevator system having a notching floor selector which is notched or advanced by notching signals developed as the elevator car moves through the hoistway, to cause the selector to store information relative to the actual position of the elevator car. The notching signals also actuate first and second counters, one of which operates a non-volatile memory. The memory count is compared with the count on the remaining counter, and when they are not equal a reset operation is initiated which includes resetting the notching floor selector and counters to represent a predetermined terminal floor, and the generation of auxiliary notching signals, all without moving the elevator car. When the memory and counter have the same count, the auxiliary notching signals are terminated, and the floor selector system is back in synchronism with the actual position of the elevator car.

An elevator system, and method of operating same, including a plurality of elevator cars mounted in a building to serve the floors therein. A system processor, having instructions stored in a memory, responds to predetermined system information to provide output signals for controlling the movement of the elevator cars. Predetermined lobby functions, such as quota control of elevator cars at the floor and dispatching therefrom, are provided by the instructions for a floor identified in the instructions. The floor for which such lobby functions are performed is changed in response to predetermined conditions, to any selected floor of the building, by means which changes the number of the identified floor in the associated instructions.

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Waldwick, NJ, United States of America

Wing C Quan