POSITION SENSOR

摘要

Position sensors include processing circuits. The processing circuits include first and second measurement circuits that each process at least one common sensor signal. A measurement processing circuitry is arranged to use the measurements from each measurement circuit, typically in a time interleaved manner, so that whilst the measurement processing circuitry is using the measurements from one measurement circuit, measurements obtained in the other measurement circuit can be used to determine calibrations that can be used to calibrate subsequent measurements obtained from that measurement circuit.

主权项

1. Processing circuitry for use in processing sensor signals, the processing circuitry comprising:
a first measurement circuit configured to receive a plurality of sensor signals from a plurality of sensor inputs and configured to pass the plurality of sensor signals through the first measurement circuit in a time division manner in a sequence of time intervals to generate a first time division sequence of sensor measurements in response thereto; a second measurement circuit configured to receive at least one sensor signal and configured to pass the at least one sensor signal through the second measurement circuit to generate sensor measurements in response thereto; and measurement processing circuitry configured to process the sensor measurements generated by the first and second measurement circuits to determine and output sensor results; wherein the first and second measurement circuits are both configured to receive a sensor signal from at least one common sensor input and to output respective common sensor measurements in response thereto; and wherein the measurement processing circuitry is configured to use said common sensor measurements to determine first mapping data that relates sensor measurements obtained from said second measurement circuit to sensor measurements obtained from said first measurement circuit.