Normalization of inductive vehicle detector outputs
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United States of America Patent
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Jan 17, 2006
Grant Date -
Aug 18, 2005
app pub date -
Apr 4, 2005
filing date -
Mar 8, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods for a determining a normalized lane occupancy and for monitoring signal quality for a vehicle detection system. Such methods include, in one embodiment, measuring a speed of a vehicle with an inductive vehicle detector, measuring an on-time for the vehicle crossing a wire loop sensor of the inductive vehicle detector, determining an inductive length of the vehicle from the measured speed, and computing a normalized on-time by subtracting a longitudinal length of the wire loop sensor from the inductive length and dividing the difference by the measured speed.
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