Signal processing circuit and device for non-contact position sensor
A signal processing circuit, non-contact technology, applied in the direction of using electrical devices, electromagnetic measuring devices, measuring devices, etc., can solve the problems of rotor position information deviation, inaccurate detection results, loss of output signal of half-wave synchronous rectification, etc.
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[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0020] The above-mentioned signal processing circuit and device for a non-contact position sensor adopts a metal rotor to connect the mechanical device to be measured, and an excitation coil and a plurality of induction coils are set on the PCB as a stator. When the position of the metal rotor changes , due to its specific symmetrical shape, the mutual inductance between the excitation coil and several induction coils on the PCB will change periodically, resulting in a periodically changing induced voltage signal. The induced voltage signal is amplified by an analog signal collector and converted i...
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