Patent ID: 6191576
Filing Date: 2001-02-20
Classification: G01D

Abstract:
A method of operating a geartooth sensor comprising the steps of:(a) obtaining at least one amplified sensor transducer waveform;(b) periodically measuring the peak output (B.sub.peak) from the sensor transducer waveform and multiplying the peak output by a first constant (M.sub.1) resulting in a first product;(c) obtaining an average output of the sensor transducer waveform (B.sub.avg) and multiplying the average output by a second constant (M.sub.2) resulting in a second product;(d) adding the first and second products to obtain an adaptive threshold;(e) comparing the adaptive threshold to the sensor transducer waveform to result in an output; and(f) utilizing the output as a switch point to set the operational characteristics of the geartooth sensor.