INDUCTIVE SIGNATURE MEASUREMENT CIRCUIT

摘要

An apparatus (10) for measuring the inductance of a wire-loop (102) (202) with noise-cancellation, auto-calibration and wireless communication features, or detector circuit. The apparatus (10) measures the effective change in inductance in a wire-loop (102) (202) as a vehicle passes over the wire-loop (102) (202) to produce an inductive signature (704) corresponding to a vehicle.