52results about How to "Accurate magnification" patented technology

The invention relates to the technical field of electronic information, and discloses a reference following anti-interference bidirectional current sampling method and system, and the method comprises the steps: carrying out the driving characteristic enhancement processing of a reference voltage signal, and obtaining an enhanced reference voltage signal; performing common-mode interference suppression processing on the original differential voltage signal to obtain a net differential voltage signal; performing linear amplitude adjustment on the net differential voltage signal to obtain an amplified voltage signal; mapping the amplified voltage signal into a unipolar voltage range by taking the strengthened reference voltage signal as a reference zero point to obtain a unipolar voltage signal; performing correlation coupling on the long-term characteristics and the short-term characteristics to obtain correction parameters, and performing signal reconstruction on the unipolar voltage signals based on the correction parameters to obtain optimized unipolar voltage signals; performing synchronous decoding on the optimized unipolar voltage signal based on the enhanced reference voltage signal to obtain an instantaneous current value and a flowing direction; according to the invention, the precision of bidirectional current sampling can be improved.