Research Of Temperature Monitoring System Of High-Voltage Switch Device Based On GPRS

This job combines with the characteristics of the high-voltage-switch and the advantages of GPRS , and develops a set of temperature monitoring system of high-voltage-switch device based on GPRS. The monitoring system consists of the data acquisition terminal,GPRS network,internet network and monitor center.The data acquisition terminal is installed inside of the high-voltage-switch; it adopts TMS320F2812 as the controller and uses thermopile temperature sensors to realize non-contacting measurement for the bus row of the cabinet. According to the measurement results, the wind cooling unit will be started to lower the temperature, and the measured values are displayed on the LCD.This system adopts the SIM300C which is built in TCP protocol as GPRS module, DSP module sends AT commands to control GPRS module, and access Internet. This system uses dynamic DNS, so the data acquisition terminal can get the dynamic IP address of the monitoring center, the data acquisition terminal set up TCP connection with the upper computer by the GPRS module, and then data acquisition terminal sends the temperature data.The software of the monitoring center uses the LabVIEW compilation, and use LabVIEW queues technology to realize that a upper point and the lower points of GPRS module set up TCP connection at the same time. The software accepts the temperature data which are sent by the terminal, then stores them in the database. We can realize historical curve inquiry function of the temperature data through the database; this function provides the basis for the optimized electric power dispatch.In this paper, the monitoring system of the high-voltage switch equipment is set up, this system can let the monitoring center to monitor effectively many high-voltage switch equipments which are scattered in the region, so this system has the strong usability and the good prospects for development.