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Abstract

A traffic analyzer for detecting a magnetic permeable mass passing a fixed position includes a calibrated magnetic background memory device, a first magnetic field detector, a second magnetic field detector, a window comparator, and a programmable processor. The first magnetic field detector is operative to detect a change in a magnetic field caused by a magnetic permeable mass passing the magnetic field detector. The window comparator then generates a comparative output of the detected change and a threshold value stored in the calibrated magnetic background memory device. The window comparator then generates a comparative output to place the programmable processor in an active state. The programmable processor is then operative to calculate characteristic data of the magnetic permeable mass using the output from the first and second magnetic field detectors. The characteristic data may be stored in a memory storage device according to a dynamic distribution classification.

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First Claim