Coal gas remote meter reading system
A remote meter reading system and gas technology, applied in the transmission system, digital transmission system, electrical components, etc., can solve the problems of low meter reading efficiency, low accuracy, and difficulty in meter reading in companies
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[0021] Such as figure 1 As shown, the gas remote meter reading system disclosed by the present invention includes a GSM main module and an acquisition flowmeter instrument module EK connected with the GSM main module, an acquisition flowmeter instrument module CORUS, a PLC module, and an isolated power supply module. The GSM main module passes through the MODBUS The bus is connected with the collection flow meter instrument module EK, the collection flow meter instrument module CORUS, and the PLC module. The intrinsically safe power supply of the isolated power supply module is placed inside the explosion-proof box, and the GSM main module is connected with the SCADA computer system in the form of OPC-SERVER. When the GSM main module performs GPRS / CDMA transmission, the encryption is based on the KEELOQ algorithm, and the instrument terminal needs After learning with the host, the host can communicate with the host. During the learning process, the instrument sends the serial ...
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