Embedded Intelligent Design Of Power Meter Reading Concentrator

With the continuous development of sensor technology and communication technology, smart grid increasingly become the future development trend of the grid system, and collect power information in the smart grid has become the important part. Through sensor technology for electricity information collection make the grid always in condition monitoring.This paper mainly residential electricity as background information collection, dedicated to the design of a multi-interface based on multi-functional smart energy power line carrier, M-BUS and 3G wireless communication technology meter concentrator. In the smart meter reading system, which consists of remote management software, concentrators, and underlying smart meter components. Concentrator as a core device smart energy meter reading system acts as a bridge and link remote management software and the underlying meter communications. Functional design with reference to the functional specification GDW373 power user information collection system requirements, to achieve a centralized automatic meter reading and reporting, remote real-time measurement called the local real-time meter reading and automatic fill copy functions. Centralized selection of hardware circuit design Samsung S3C2440 as its core processing chip, give full play to its embedded controller speed, strong data processing capability advantage. To meet the concentrator meter data transmission requirements, expanding the rich peripheral interface communication circuit, including 3G wireless network interface and a standard RJ45 Ethernet communication interface upstream communications for centralized and remote management host communication; downlink communication support low-voltage power line carrier communication, M-BUS bus communication and RS485 bus communication for meter concentrator and the underlying communications. In the software design, concentrator embedded linux operating system as a software development platform, and on this platform this successful transplant embedded QT/E graphics library. Concentrator applications and embedded QT based graphical interface development, and the graphical interface (GUI) that is used as the main thread, multi-threaded processing mechanism meter multi-tasking work. On the data storage, intelligent energy meter concentrator for meter reading with Light sqlite3 database for fast and efficient data storage. To make smart energy meter concentrator has better compatibility and adaptability, down the line of communication protocols using standard communication protocols national user information collection of communication, upward communication protocol GDW376.1 national standard communication protocol the downlink communication using DL/T645 protocol.Through the intelligent meter reading system have to copy the data and carries on the analysis, finally makes the power supply departments to effectively monitor the power grid and the residents of electricity, reasonable time billing, avoid stealing electricity, damaged power facilities and greatly reduce the human behavior of the meter reading. work.