Passenger number sensor system
First Claim
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1. A passenger-number sensor system comprising:
- a plurality of infrared ray sensors disposed on a straight line for detecting temperature changes in their light reception zones;
a plurality of optical lenses disposed one for each of said plurality of infrared ray sensors for determining said light reception zones of the infrared ray sensors; and
means for selecting one of the addition values 1 to n according to a sense pattern based on the temperature changes of the infrared ray sensors.
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Abstract
A passenger-number sensor system wherein a plurality of infrared ray sensors are disposed on a straight line to detect temperature changes in their light reception zones, a plurality of optical lenses are provided one for each of the plurality of infrared ray sensors, and a counter is provided to select one of the addition values in a predetermined range according to a sense pattern based on the temperature changes of the infrared ray sensors and add the selected addition value to a so-far accumulated count value.
22 Citations
1 Claim
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1. A passenger-number sensor system comprising:
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a plurality of infrared ray sensors disposed on a straight line for detecting temperature changes in their light reception zones; a plurality of optical lenses disposed one for each of said plurality of infrared ray sensors for determining said light reception zones of the infrared ray sensors; and means for selecting one of the addition values 1 to n according to a sense pattern based on the temperature changes of the infrared ray sensors.
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Specification
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Current AssigneeMatsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
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Original AssigneeMatsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
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InventorsIshikawa, Haruo, Kawana, Kiyoshi, Honma, Ko, Yoshikawa, Takashi
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Primary Examiner(s)Westin, Edward P.
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Assistant Examiner(s)HANIG, RICHARD E
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Application NumberUS07/669,374Time in Patent Office257 DaysField of Search250/342, 250/340, 250/338.1, 340/567US Class Current250/342CPC Class CodesG01V 8/20 using multiple transmitters...G06M 1/101 by electro-optical meansG07C 9/00 Individual registration on ...
