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Optical sensing and size discrimination of moving vehicles using photocell array and threshold devices

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1 Author(s)
Takagi, T. ; Dept. of Electrical Communications, Tohoku Univ., Sendai, Japan

Discusses equipment which can optically sense moving vehicles, and discriminate their sizes. Based on a conceptual consideration on size discrimination, a hardware implementation using a SnO2-Si photocell array and simple electronic circuits is made. The developed equipment can separately count three sizes of moving vehicles along a road.

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Instrumentation and Measurement, IEEE Transactions on  (Volume:IM-25 ,  Issue: 1 )