Measurement configuration
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United States of America Patent
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Oct 14, 2008
Grant Date -
Feb 1, 2007
app pub date -
Jul 27, 2006
filing date -
Jul 28, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A movement distance sensor operates as a differential transformer with a primary coil, at least two secondary coils. A circuit configuration is connected to the secondary coils in order to determine a movement distance. The circuit configuration includes a multiplexer, an A/D converter, and a digital logic module. The multiplexer is connected to the first and the second secondary coil via an input stage. The output of the multiplexer is connected to the input of the A/D converter and the output of the A/D converter is passed to the input of the digital logic module. The latter determines the movement distance from the input signals received alternately from the multiplexer. The measurement configuration exhibits high reliability with low error tolerances.
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