Apparatus for detecting the number of passers
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United States of America Patent
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Feb 2, 1999
Grant Date -
N/A
app pub date -
Sep 3, 1997
filing date -
Sep 4, 1996
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Abstract
A plurality of rows are provided on a calling of sensors and each have a plurality of distance variation measuring sensors. The distance variation measuring sensors each include a light emitter and a light receiver arranged in the orthogonal direction to the direction in which human bodies pass. The number of passers is detected on the basis of the number of the distance variation measuring sensors which have detected a human body. The traveling direction of human bodies is detected on the basis of the change in the distance to the distance variation measuring human bodies measured by the sensors.
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