Structure diagram of GPRS Internet of Things communication system
The GPRS Internet of things communication system is mainly composed of gas Internet of things data center, GSM/GPRS network, GPRS Internet of things gas meter and user end.

System characteristics
●Adopt B/S structure without installing client, the client side only needs that the browser accesses system including two parts of Web management interface and communication service program.
●Support large concurrent processing, single data acquisition server simultaneously processes 20 thousand gas meters, which can guarantee the communication, settlement and daily operation management of the 6 million gas meters.
●Automatic data backup to ensure that the data is not lost;
●The communication service program is an executable program. It releases the communication port and communicates with the network nodes such as GPRS, COM, SMS center and online payment center.