Research and development of an on-line electric energy data acquisition and monitoring system

In view of the existence of manual meter reading various drawbacks, and achieving the remote monitoring, analysis and management of energy consumption, we present a practical application system: An Online Electric Energy Data Acquisition and Monitoring System. The system consists of intelligent data acquisition terminal and management platform. The intelligent data acquisition terminal gets data through Power Line Carrier or RS-485 from electric energy meter which is named downlink communication and uplink communication with the remote management platform by GPRS channel. Downlink communication uses “DL/T645-2007Multi-function watt-hour meter communication protocol”, and uplink communication protocol is the “Q/GDW1376.1 — 2012 power user electric energy data acquisition system communication protocol”. Both of the two protocols are in line with national standards which can ensure a good compatibility with electric energy meter product by different companies. To ensure high real time performance, a strictly time control mechanism for per meter reading and dynamic data storage management mode have been designed. Besides, a reasonable reconnection mechanism and an heartbeat frame between acquisition terminal and management platform is necessary to achieve high on-line performance.