Multi-turn position sensing device and multi-turn position sensing method

Abstract

A multi-turn position sensing device includes a rotating element, a first multi-turn position sensor, a second multi-turn position sensor and a signal processor. The rotating element includes a magnet and a rotating shaft. The signal processor is coupled to the first multi-turn position sensor and the second multi-turn position sensor. The signal processor is configured to execute the following steps: obtaining the first position data of the first multi-turn position sensor for the rotating shaft; obtaining the second position data of the second multi-turn position sensor for the rotating shaft; normalizing the first position data and the second position data respectively to obtain the first normalized position data and the second normalized position data; synthesizing the first normalized position data and the second normalized position data into a first synthesized position data; and reverting the first synthesized position data to a first long-stroke position data.

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