Elevator button improved to function as a lock
First Claim
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1. A system for providing an unlock signal to an elevator, said system comprising:
- (a) a button circuit means including a button face for providing a first pulse train to said button face, and receiving a modulated first pulse train from said button face;
(b) key means for receiving said first pulse train from said button face, modulating said first pulse train for providing said modulated first pulse train to said button face; and
(c) lock means for receiving said modulated first pulse train from said button face, demodulating said first pulse train and providing an unlock signal to an elevator remote station which provides hall calls and car calls to an elevator controller.
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Abstract
The invention prioritizes elevator service by an electronic lock and key circuit which uses a pre-existing capacitive touch button, an electronic key for receiving a 10 KHz first button pulse train from the face of the capacitive touch button and modulating said capacitive touch button pulse train with a signal of a preset frequency. A modulated first pulse train is provided back to the capacitive touch button face and an electronic lock for modulating a demodulated first pulse train received at the capacitive touch button face so as to provide a high priority hall call or a car call.
108 Citations
11 Claims
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1. A system for providing an unlock signal to an elevator, said system comprising:
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(a) a button circuit means including a button face for providing a first pulse train to said button face, and receiving a modulated first pulse train from said button face; (b) key means for receiving said first pulse train from said button face, modulating said first pulse train for providing said modulated first pulse train to said button face; and (c) lock means for receiving said modulated first pulse train from said button face, demodulating said first pulse train and providing an unlock signal to an elevator remote station which provides hall calls and car calls to an elevator controller. - View Dependent Claims (2, 3, 4, 9)
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5. A method for providing a priority call to an elevator controller, comprising the steps of:
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(a) electrically connecting a key face to a button face for receiving a first pulse train provided to said button face; (b) modulating said first pulse train and providing said modulated first pulse train to said button face; (c) receiving said modulated first pulse train at said button face; and (d) demodulating said modulated first pulse train and providing an unlock signal to an elevator remote station which provides hall calls and car calls to an elevator controller. - View Dependent Claims (6, 7, 11)
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8. A system for providing a priority call to an elevator, said system comprising:
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(a) a button circuit means including a button face for providing a first pulse train to said button face, and receiving a modulated first pulse train from said button face; (b) key means for receiving said first pulse train from said button face, modulating said first pulse train for providing said modulated first pulse train to said button face; and (c) lock means for receiving said modulated first pulse train from said button face, demodulating said first pulse train and providing an unlock signal to an elevator remote station which provides hall calls and car calls to an elevator controller. - View Dependent Claims (10)
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Specification