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《Power System Technology》 2010-09
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Research and Development of Embedded Communication Software for Smart Meters Based on DL/T 645—2007 Protocol

MENG Junxia,ZHU Ninghui,BAI Xiaomin,ZHOU Ziguan(China Electric Power Research Institute,Haidian District,Beijing 100192,China)  
The DL/T 645—2007 protocol for multi-function watt-hour meter is drafted to unify and standardize the data exchange between multi-function watt-hour meters and data terminal equipments.To reduce code amount of embedded communication software in watt-hour meter and improve the execution efficiency of communication software,on the basis of analyzing characteristics of encoding table for data identification in DL/T 645—2007 protocol,data that is metered,processed and recorded by a watt-hour meter is organized and stored rationally.A smart meter acts as a slave station,which receives communication commands from a master station.After simply transferring data identification sent from the master station,the store address of required data can be calculated,thus the time used for data retrieval from storage space outside a MCU embedded in the meter is obviously shorten.The proposed method is available for design of a smart meter possessing such functions as interacting with consumers,metering diverse electricity parameters and exchanging large amount of information with a master station.
【CateGory Index】: TM933.4
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