Flow control gate and method

Details Flow control gate and method Flow control gate and method

E - Fixed Constructions

06

B

E06B 11/02 (2006.01) G01V 8/20 (2006.01)

Patent

CA 2696387

There is first provided a flow control gate comprising i) first and second elongated barrier members defining a passageway between a first area and a second area, ii) at least four narrow beam presence sensors with substantially constant spacing therebetween defining a linear array mounted along the first barrier member and defining a presence detection beam orientation crosswise and substantially perpendicular to the passageway, and iii) a controller electrically connected to the sensors and implementing an operating program to read signals from the sensors and define valid detection periods interpreted as an item detection when a detection period is equal to or longer than a predetermined value and invalid detection periods interpreted as no detection when a detection period is shorter than said predetermined value. The invention further discloses a method for monitoring and controlling a flow of detectable items through a passageway, based on advanced analysis of sensor signals.

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