VMIVME-5565-1110000 VMIVME-5565 is the English abbreviation for General Packet RadioService, which is a packet switching system. The GPRS logical structure is shown in Figure 1. The basic function of GPRS is to transmit packet services between mobile terminals and routers in standard data communication networks. The GPRS network structure is based on the GSM system, and the voice part still uses the basic processing unit of the original GSM, while the data part adds some new data processing units and interfaces. In order to achieve data bearer, the GPRS system has introduced several new network units, such as packet processing unit (PCU), GPRS service support unit (SGSN), GPRS gateway support unit (GGSN), as well as other auxiliary units for data service management and application, such as DNS and DHCP servers, network time protocol server (NTP), billing gateway CG, etc.

This system uses ultra-low power LPC1114 M0 ARM7 as the core control device, collects temperature information using VMIVME-5565-1110000 VMIVME-5565 sensors, converts temperature information into digital information, and sends it to the core control device LPC1114 M0 through ZigBee wireless sensor network. The core controller analyzes and processes the data, and controls the execution unit based on the processing results. If the water temperature exceeds the standard value, the cooling module is started; If it is below the standard value, start the heating module; If the temperature remains below the standard value for a long time or exceeds the time threshold (which can be set based on experience), the alarm module will be activated and the alarm information will be sent to the user terminal through GPRS for timely processing. The system uses 12864 as the display module to display temperature information, alarm information, and execution information in real-time.