Electromagnetic field-based position sensor
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United States of America Patent
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Sep 13, 2011
Grant Date -
Apr 9, 2009
app pub date -
Jan 31, 2007
filing date -
Feb 28, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
There is described a position sensor comprising a sensor electromagnetic field generator, a screen arranged to confine the sensor electromagnetic field, and an output. The output is arranged to provide a signal which varies in dependence upon an amount of flux compression of the electromagnetic field resulting from the presence of the screen. The amount of flux compression is related to a position of the screen in relation to the sensor electromagnetic field generator. There is also described a method of detecting a relative position of an electromagnetic field generator and a screen.
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