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US 7,466,041 B2Granted
Wireless powerless switch sensor
AssigneeWabtec Holding Corp.
InventorRobert Urman
Life of this patent
Estimating the term…
Abstract
A passenger door open request switch for use in a multi-passenger, mass-transit vehicle. A wireless, powerless switch sensor which includes an RFID reader, a circuit located remotely from the RFID reader that is formed by connecting an RFID antenna with a control/storage element, and a switch. The switch is connected between the antenna and the storage element in such a way as to either enable or disable the antenna. This allows the system to be configured to monitor the status of the switch.
Claims1
A passenger door open request system for a multi-passenger mass transit vehicle comprising:
- a door operator for controlling the opening and closing of a door mounted to a doorframe of a multi-passenger mass transit vehicle;
- a door open request switch mounted on or near the door;
- a controller comprising an RFID reader antenna and a logic unit, wherein the logic unit of the controller is coupled to the door operator, said RFID reader antenna repetitively transmitting and awaiting a response;
- an RFID circuit formed by connecting an RFID antenna with a control/storage element and an electrical switch connected to said RFID antenna, wherein the electrical switch is coupled to the door open request switch such that when the door open request switch is closed, the RFID circuit responds to the controller to cause the door to open.
1 more element
Dependencies are inferred from the claim text.