Passenger number sensor system

Details Passenger number sensor system Passenger number sensor system

1991-03-14

1991-11-26

Westin, Edward P.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

340567, G01V 904, G08B 1318

Patent

active

050685376

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.

REFERENCES:
patent: 4849737 (1989-07-01), Kirihata et al.
patent: 4993049 (1991-02-01), Cupps

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