| 摘要 |
Magnetic field sensors may be used for determination of a position or of a rotational speed of an object. According to an exemplary embodiment of the present invention, a sensor system comprises a sensor unit generating a frequency output reflecting the rotational speed or the position of the object, wherein the frequency output has a higher frequency than an encoding frequency of the object. This may provide for an improved resolution. The intrinsic sensor characteristic leads to a signal having twice or four times the frequency of the encoded magnetic field. The sensor may be a giant magneto-resistance (GMR) sensor. |
