Elevator door wireless controller
First Claim
1. An elevator door control system for an elevator car operating in a hoistway serving a plurality of landings, the system including a door controller on the elevator car and at each landing, sensors at each landing that determine door conditions at each landing and communicate such conditions to an associated door controller, adjacent landing and car door controllers being in mutual communication, said door controllers, on the basis of information received from said sensors and communication between said door controllers, being configured to determine if door conditions at all of the landings are suitable to open or close the car and landing doors at a host landing in a manner free of assistance of a separate main door controller wired to the landing door controllers.
1 Assignment
0 Petitions
Accused Products
Abstract
Control systems and methods for operating the doors of an elevator where the control logic is distributed in local car and landing door controllers that communicate wirelessly with one another to eliminate door control signal wiring in the hoistway thereby simplifying installation and diagnostics and affording door motor control that is individualized for each door.
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Citations
25 Claims
- 1. An elevator door control system for an elevator car operating in a hoistway serving a plurality of landings, the system including a door controller on the elevator car and at each landing, sensors at each landing that determine door conditions at each landing and communicate such conditions to an associated door controller, adjacent landing and car door controllers being in mutual communication, said door controllers, on the basis of information received from said sensors and communication between said door controllers, being configured to determine if door conditions at all of the landings are suitable to open or close the car and landing doors at a host landing in a manner free of assistance of a separate main door controller wired to the landing door controllers.
- 22. A method of operating the doors of an elevator system comprising providing a door controller on the car and at each landing, each controller being provided with an RF transceiver for two-way wireless communication between adjacent landing door controllers, and between the car controller and an adjacent landing door controller, programming the landing door controllers to pass a token of data indicating door conditions and the identity of a landing door controller associated with a transmitting transceiver up and then down the hoistway, enabling a landing door controller to wirelessly communicate back and forth with the car door controller landing door conditions to the car door controller and landing door commands from the car door controller while communication of such conditions and commands back and forth between other landing door controllers and the car door controller is precluded, and wiring the car door controller to the elevator controller to signal landing door conditions to the elevator controller and receive door operating commands from the elevator controller.
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25. An elevator door system comprising a separate door controller on an elevator car and at a plurality of landings along a hoistway and being served by the car, each controller having controller circuitry enabling the controller to be used either for car door control or landing door control, the controllers including a radio card for communication between landing door controllers and between landing door controllers and the car door controller, the door controllers each having inputs for receiving door position signals and outputs for driving electric door motors, the controllers each including inputs for door open and door close commands, the car door controller having door open and door close inputs wired to an elevator controller and the landing door controller having door open and door close inputs connected to associated landing door open and door closed push buttons, the landing door controllers being programmed to pass landing door condition data wirelessly up and down the hoistway, the landing door controllers each having an input for receiving a signal from an associated zone switch indicating the presence of the car stopped at an associated landing, each landing door controller only being enabled to wirelessly communicate with the car door controller when the associated zone switch indicates the presence of the car, the car door controller being wired to the elevator controller to relay landing door information received from an enabled landing door controller and being configured to wirelessly send door control commands to the enabled landing door controller.
Specification