Magnetic interference adjusting system for water meter

The utility model discloses a magnetic interference adjusting system for a water meter, which comprises an electromagnetic detection module for detecting a magnetic field in a power supply through an operational amplifier U2, outputting a current value and calculating a range value of the magnetic field; the filtering module is used for filtering the electromagnetic interference exceeding the range value through a resistor R3 and an inductor C1 and outputting the electromagnetic interference; the signal impedance module is used for performing impedance adjustment on an interference signal input into the water meter through a transistor Q2; the signal reset module is used for carrying out reset conversion on the received interference signal through a NOT gate U3, and the amplitude separation module is used for segmenting the interference signal through a triode Q3 to obtain a required output signal; according to the utility model, the operational amplifier U2 is used for operational amplification, a magnetic f