Passenger sensor for a conveyor

Details Passenger sensor for a conveyor Passenger sensor for a conveyor

1996-07-31

1998-12-01

Terrell, William E.

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

With means to control the operation of the section

198323, B65G 1500, B65G 3504, B65G 4300, B65G 4308

Patent

active

058425543

ABSTRACT:
A passenger sensor for a passenger conveyor is disposed adjacent to a floorplate and produces a signal in response to changes in the load on the floorplate, rather than in response to a predetermined level of load. This results in a passenger sensor that does not require adjustment to accommodate the changing conditions of the passenger conveyor. In a particular embodiment, the passenger conveyor includes a passenger sensor that is formed from a piezoelectric cable that extends about the perimeter of the floorplate. The piezoelectric cable is connected to a controller that determines the operational speed of the passenger conveyor. Changes in the load on the floorplate, such as caused by a passenger entering the passenger conveyor, result in the piezoelectric cable generating a signal that is received by the controller. The controller then adjusts the operation speed of the passenger conveyor in response to the signal.

REFERENCES:
patent: 1438112 (1922-12-01), Hendricks
patent: 1987272 (1935-10-01), Sprecker
patent: 2057911 (1936-10-01), Obergfell
patent: 2147979 (1939-02-01), Kearney
patent: 2983358 (1961-05-01), Clemetsen et al.
patent: 4088219 (1978-05-01), Binns
patent: 4499986 (1985-02-01), Tsuboi et al.
patent: 4951786 (1990-08-01), Haraguchi

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