Based On The Gsm User Meter Reading System Designed

To realize automatic meter-reading for the remote area, and enhance effiency and economic benefit, we designed meter-reading system for large users with the idea of systematism and module in this paper, employing advanced embedded technology, Wireless communications technology and powerful computer software technology.The hardware of system includes three parts: data-collecting terminal, wireless network and management system of main station. Data-collecting terminal is composed of controlling unit MCU and GSM module Sim100-E. Wireless network uses the existing GSM network, by the short message service, energy data and control instruction can be long-distance transmited. Main station is composed of GSM receiver ITM100 and computer.System software includes the software for MCU in the data-collecting terminal and the software of the main station. The design for software of the data-collecting terminal have functions of energy data collecting, receiving and sending short message by controlling the GSM module Sim100-E and partly control. In the main station, firstly, we designed communication module based on the serial control Mscomm to realize the function of receiving and sending short message through the GSM module ITM100. Then, based on ActiveX data object ADO, we designed the data management module with the ructions of data preserving, data query and data report printing.According to users' demand, main station system can send collecting or controlling instruction to data-collecting terminal by the short message, realize wireless meter-reading and long-distance control. This system has following advantages: low cost, widely application, fast response, convenient manipulation and thunder-avoiding.