ELECTROMAGNETIC POSITION MEASUREMENT SYSTEM WITH SENSOR PARASITIC LOOP COMPENSATION
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United States of America Patent
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Issued Date -
Apr 4, 2024
app pub date -
Dec 1, 2023
filing date -
Jun 11, 2020
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Abstract
A magnetic tracking device includes a sensor configured to generate a sensor electromotive force (EMF). The device includes a mechanism configured to select between a first operating mode in which the sensor generates the sensor EMF when receiving the magnetic field and a second operating mode in which the sensor generates a reduced amount of the sensor EMF when receiving the magnetic field. An interconnecting circuit generates a parasitic EMF in each of the first operating mode and the second operating mode. The interconnecting circuit connects to a processing device which receives a first measurement for the first operating mode, the first measurement representing the sensor EMF and the parasitic EMF, receives a second measurement for the second operating mode, the second measurement representing the parasitic EMF, compares the first measurement and the second measurement, and determines an approximate value of the sensor EMF.
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