There is no limit to creativity, and the instrument is invented. Today we introduce a national invention patent for authorization - an Internet of Things gas meter. The patent was applied by Qinghai Boming Gas Equipment Manufacturing Co., Ltd. and was authorized to be announced on December 21, 2016. Description The utility model relates to a gas meter, in particular to an internet of things gas meter. Background of the invention The existing gas meter only has the volumetric measuring function of gas such as gas, natural gas and liquefied petroleum gas. Features such as wireless data transfer and valve remote control are not possible. It brings great inconvenience to the data collection, transmission and operation of the gas meter. To this end, it is necessary to design an IoT gas meter. Summary of the invention The purpose of the utility model is to provide an Internet of Things gas meter with simple structure, real-time wireless uploading of collected data, and remote control functions. Figure is a schematic diagram of the IoT gas meter of the utility model The object of the present invention is an IoT gas meter, comprising an MCU control unit circuit, a valve control circuit connected with the MCU control unit circuit, an IC read/write circuit, an external EEPPOM circuit, a system power supply and a low voltage detection circuit, and a programming interface. Circuit, counting interface circuit, liquid crystal interface circuit and GPS module circuit, valve interface circuit connected with valve control circuit, switch machine control circuit connected between MCU control unit circuit and GPS module circuit, and network connected with GPS module circuit Signal indicator circuit. Further, the GPS module circuit uses a GPS chip of the type SIM800C. The MCU control unit circuit uses an MCU chip of the type STM8L052R8T6. The switch control circuit includes a first resistor, a second resistor and a first transistor, one end of the first resistor is connected to the MCU control unit circuit, and the other end of the first resistor is connected to the base of the first transistor; The collector of the first triode is electrically connected to the GPS module, and its emitter is grounded; the second resistor is connected between the base and the emitter of the first triode. The network signal indicator circuit includes a third resistor, a fourth resistor, a light emitting diode and a second transistor, one end of the third resistor is connected to the GPS module circuit, and the other end is connected to the base of the second transistor Connected, the collector of the second transistor is connected to the cathode of the LED through a fourth resistor, the anode of the LED is connected to a +4V power supply, and the emitter of the second transistor is grounded. A SIM mobile phone card is installed in the gas meter, and the data exchange between the server and the gas meter is realized by using the existing mobile communication network through GPRS or GSM short message mode, and the manager can connect with the server through the mobile terminal directly to the gas meter. Control and data reading to facilitate the management of gas meter data. The meter communicates via GPRS/SMS network, which has the advantages of reliable transmission, simple construction and convenient maintenance. The utility model has the following beneficial effects: the utility internet gas meter of the utility model can upload and collect data in real time through the GPS module circuit, the switch machine control circuit and the network signal indicator circuit, and can realize the functions of wireless remote control of the valve and the like. The whole has the advantages of simple structure and convenient use.
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