Electronic type pre-payment IC card carrier gas meter

The utility model relates to a prepayment single phase IC card wave-carrying fuel gas meter, belonging to the technical field of mensuration. The utility model which is used to prevent embezzlement of fuel gas has the technical proposal that the fuel gas meter is composed of an AC/DC power supply circuit, a flow sensor, a single chip microcomputer, a carrier transceiving coupled circuit, a LCD display, an IC card reading and writing controlling circuit, an electric valve controlling circuit and an adjustment circuit. The flow sensor is composed of an magnetic impeller and a tongue tube which are both arranged in a fuel gas tube; the carrier transceiving coupled circuit is composed of a coupling transformer, a carrier signal receiving circuit and a carrier signal sending circuit; and the electric valve controlling circuit is composed of a bistability electromagnetic valve and a bidirectional driver. The utility model can monitor the gas consumption information of the user and control the gas supply pipeline wh