The invention discloses a
fuel gas intelligent early warning centralized control device, a centralized
control system and a monitoring method. The control device comprises a controller, a monitoring mechanism, an execution mechanism, an alarming mechanism and a power supply mechanism, wherein the detection mechanism comprises a
fuel gas concentration sensor and a
pressure sensor, and is connectedwith the controller; the execution mechanism comprises a manual control valve, an
electric control valve and a communication valve; a user connection end opening of the
fuel gas supply pipeline is connected with the input of the fuel metering meter through the manual control valve; the output of the fuel metering meter is connected with the input of the communication valve through the
electric control valve; the output of the controller is respectively connected with the
electric control valve and the warning mechanism; the two output openings of the communication valve are respectively connected with the input of a fuel gas
water heater and a gas-
cooker; the power supply mechanism provides
electricity for the controller, the electric control valve and the fuel
gas meter. The fuel gas using safety grade of the user can be obtained through the
fuzzy prediction control; the prediction and
control function is realized; the accidents of the fuel gas in various aspects can be effectively prevented.