Method for detection of a marked element in proximity to a senso

Details Method for detection of a marked element in proximity to a senso Method for detection of a marked element in proximity to a senso

1993-07-16

1995-04-25

Nguyen, Vinh

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Using radiant energy

25023117, G01R 2726

Patent

active

054102464

ABSTRACT:
A method for detecting a marked element on an eddy wheel in proximity to a sensor is described. The method includes the steps of accumulating sensor output signals over a selected time period. The number of sensor output signal over a first and second time period are determined. From that number an average value is calculated. A threshold value is established for the average for determining whether the marked is present. The threshold value is compared to the average value. If the average value is greater than the threshold value, an output signal is generated to indicate the presence of the mark.

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