Object sensor system for automatic swing door

Details Object sensor system for automatic swing door Object sensor system for automatic swing door

1997-01-29

1999-10-05

Ip, Paul

Electricity: motive power systems

Automatic and/or with time-delay means

Radiant energy

318450, 318460, 318467, 250221, 2502221, 49 25, 49 26, G05B 500, E05F 1512

Patent

active

059630000

ABSTRACT:
A object sensor system for a swing door includes swing-side and approach-side sensors. Each of the sensors includes light-emitters and light-receivers which are mounted on a swing door. The light-emitters emit light toward a floor, and the light-receivers receive the light as reflected from the floor. The light emitted and received provides an object sensing zone which has a rectangular shape on the floor having a width equal to or larger than the width of the door. The sensing zone includes a main sensing area closer to the door and an auxiliary sensing area extending along the main sensing area. The auxiliary sensing area is disabled when the door moves.

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