Texas Instruments Corporation

Rockwell Automation Technologies Incorporated

Lin Wang

Robert Allan Neidorff

Jean Picard

Frederic Boutaud

Wilburn M Miller

Guillermo J Serrano

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.

Coil architecture for inductive sensors

Apparatus within power sourcing equipment and a method for determining whether a load within a powered device coupled to the power sourcing equipment via a cable is within an acceptable resistance range. If the load is within the acceptable resistance range, a voltage source is coupled to the load. In one embodiment one recharge interval is employed during which a capacitor is charged based, at least in part, on the voltage drop across the load and one discharge interval is employed during which a capacitor is discharged based, at least in part, on the voltage drop across the load. In a second embodiment, first and second recharge and discharge intervals are employed and prior to initiation of the recharge and discharge intervals, settling time periods are provided.

System and method for characterizing a load at the end of a cable

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Merrimack, NH, United States of America

Lin Wang