Non-magnetic water meter water quantity statistical circuit and method and non-magnetic water meter

The invention relates to a non-magnetic water meter water quantity statistical circuit and method and a non-magnetic water meter. The circuit comprises a non-magnetic sensor, a single chip microcomputer, a first selection channel and a second selection channel. The positive current pulse output end of the non-magnetic sensor is connected to the pulse counting module through a first selection channel; the reflux pulse output end of the non-magnetic sensor is connected to the pulse counting module through a second selection channel; the positive current pulse output end of the non-magnetic sensor is connected with a first general IO port of the single-chip microcomputer, and the reverse current pulse output end of the non-magnetic sensor is connected with a second general IO port of the single-chip microcomputer. And the single chip microcomputer is used for judging whether the received pulse signal is a positive current pulse or a reverse current pulse according to the pulse received by the general IO port, an