Coil architecture for inductive sensors
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United States of America Patent
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Dec 4, 2018
Grant Date -
Dec 31, 2015
app pub date -
Jun 30, 2014
filing date -
Jun 30, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A bobbin and coil architecture is provided for use in an inductive sensor. The architecture eliminates the need for coil shielding and reduces the sensor's sensitivity to temperature and proximate mounting hardware. In one or more embodiments, all or portions of separate coils are located in a common slot on the bobbin, rather than being segregated into separate slots. In an example configuration, two receiver coils may be located in respective two slots on the bobbin, and a transmitter coil may divided into two substantially equal subsets of windings, with each subset wound together with one of the receiver coils in a common slot. This yields a symmetrical and balanced winding architecture that requires fewer slots relative to designs that segregate all coils into separate slots.
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