HEV robust algorithms for magnetic speed sensor for engine applications

A magnetic sensor module configured to measure a magnetic field whose magnitude oscillates between a first extrema and a second extrema, the magnetic sensor module comprising:

• a magnetic sensor including a plurality of sensor elements configured to generate measurement values in response to sensing the magnetic field;
• and
• a sensor circuit configured to:
• receive the measurement values from at least one of the plurality of sensor elements, and generate a measurement signal based on the measurement values received from the at least one of the plurality of sensor elements,
• measure a first characteristic of the measurement signal and adjust an offset of the measurement signal according to an offset update algorithm based on the measured first characteristic of the measurement signal,
• compare the adjusted measurement signal to a switching threshold, and generate a pulsed output signal having pulses that are generated based on the adjusted measurement signal crossing the switching threshold,
• measure a second characteristic of the measurement signal, and
• selectively enable and disable the offset update algorithm based on at least the second characteristic of the measurement signal.