CPC G01R 33/072 (2013.01) [G01D 5/145 (2013.01); G01R 15/202 (2013.01); G01R 15/207 (2013.01); G01R 33/09 (2013.01)] | 20 Claims |
1. A contactless potentiometer device comprising:
a first sensor mounted on a first substrate;
a second sensor mounted on a second substrate, the first sensor and the first substrate being physically and electrically isolated from the second sensor and the second substrate, each sensor configured to measure change in a magnetic field, wherein each sensors comprises one or more electrically isolated output channels to provide an output signal to a control circuit corresponding to the change in the magnetic field, wherein each sensor includes a magnetic sensor circuit having an independent differential input with respect to a reference input, and an independent differential output with respect to a reference output to provide a signal to a respective electrically isolated output channel; and
a ring magnet positioned a first distance from the first sensor and a second distance from the second sensor, such that each of the sensors are coaxially aligned with a central magnetic axis of the magnetic field and within range of the magnetic field from the magnet.
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