Oscillator drift compensation device, method and rotational speed sensor
A speed sensor and drift compensation technology, which is applied in the field of speed sensors and drift compensation devices, can solve problems such as the drift of the operating point of the oscillating circuit and affect the performance indicators of the speed sensor, and achieve the effect of compensating temperature drift and accurate measurement
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[0028] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0029] figure 2 A schematic diagram of a rotational speed sensor 200 according to some embodiments of the present invention is shown. like figure 2 As shown, the rotational speed sensor 200 includes an oscillator 210 and a drift compensation device 230 . The oscillator 210 has a coil 211 that generates an alternating magnetic field. When the metal conductor is close to the coil 211 , an induced current (eddy current) is genera...
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