Elevator – industrial lift truck – or stationary lift for vehicle – With monitoring – signalling – and indicating means – Monitors operational parameter
Patent
1997-12-23
1999-03-16
Nappi, Robert E.
Elevator, industrial lift truck, or stationary lift for vehicle
With monitoring, signalling, and indicating means
Monitors operational parameter
32420712, B66B 124, G01B 700
Patent
active
058833455
ABSTRACT:
A sonic position sensing system for measuring the position of an object, such as an elevator, includes transmitting a sonic signal along a conductor by a transmitter; receiving said sonic signal at a first receiver, located a first distance along said conductor from said transmitter; receiving said sonic signal at a second receiver located a second distance from said transmitter and on an opposite side of said transmitter from said first receiver; calculating a first distance between said transmitter and said first receiver; calculating a second distance between said transmitter and said second receiver; and calculating a total measured distance between said first receiver and said second receiver as the sum of said first distance and said second distance as the sum of said first distances and said second distance. The first or second distances may be scaled by the total measured distance to compensate for temperature effects. The position may also be corrected for velocity and/or acceleration of the object.
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Years of Novelty, Variet and Flexibility Made the Famous Reputation, Consul Electronics Engineering LTD Brochure--Israel (undated).
Schonauer Uwe
Spannhake Stefan
Nappi Robert E.
Otis Elevator Company
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