Sensor-based shutdown detection of elevator system
AssigneeOtis Elevator Company
InventorsLindsay Wos, Nikola Trcka, Sally Day Mahoney, Leslie Lamontagne, Sandeep Sudi
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Abstract
An elevator system includes an elevator car configured to travel in a hoistway, the elevator car including an elevator car door; a controller configured to control motion of the elevator car; at least one sensor configured to sense an operating condition of the elevator system; and a sensor interface configured to detect a shutdown state of the elevator system in response to the operating condition.
Claims16
An elevator system comprising:
- an elevator car configured to travel in a hoistway, the elevator car including an elevator car door;
- a controller configured to control motion of the elevator car;
- at least one sensor configured to sense an operating condition of the elevator system;
- and
- a sensor interface configured to detect a shutdown state of the elevator system in response to the operating condition;
- wherein the sensor interface is configured to detect the shutdown state of the elevator system in response to at least one of the following:
- (i) the elevator car stopped at a landing, the elevator car door opening, the elevator car door closing, occupancy detected in the elevator car and the elevator car door opening, occurring in sequence a number of times;
- (i) the elevator car moving, occupancy detected in the elevator car, the elevator car stopping at a landing and the elevator car door not opening for a period of time, occurring in sequence;
- wherein the sensor interface is configured to detect the shutdown state of the elevator system in response to the elevator car stopped at a landing, the elevator car door opening, the elevator car door closing, occupancy detected in the elevator car and the elevator car door opening, occurring in sequence a number of times.
A method of detecting a state of an elevator system including elevator car configured to travel in a hoistway, the elevator car including an elevator car door and a controller configured to control motion of the elevator car, the method comprising:
- using at least one sensor to sense an operating condition of the elevator system;
- and
- detecting a shutdown state of the elevator system, at a sensor interface, in response to the operating condition;
- wherein detecting the shutdown state of the elevator system is in response to at least one of the following:
- (i) the elevator car stopped at a landing, the elevator car door opening, the elevator car door closing, occupancy detected in the elevator car and the elevator car door opening, occurring in sequence a number of times;
- or (ii) the elevator car moving, occupancy detected in the elevator car, the elevator car stopping at a landing and the elevator car door not opening for a period of time, occurring in sequence;
- the method further comprising detecting the shutdown state of the elevator system in response to the elevator car stopped at a landing, the elevator car door opening, the elevator car door closing, occupancy detected in the elevator car and the elevator car door opening, occurring in sequence a number of times.
Dependencies are inferred from the claim text.