一种基于LoRa通信技术的单相预付费电能表  

A Single-phase Prepayment Power Meter Based on LoRa Communication Technology

作　　者：严冬[1] 贺开俊 程亚军[1] 王平[1] 李帅永 YAN Dong;HE Kai-jun;CHENG Ya-jun;WANG Ping;LI Shuai-yong(Key Laboratory of Network Control ＆ Intelligent Instrument,Ministry of Education,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学工业物联网与网络化控制教育部重点实验室,重庆400065

出　　处：《自动化与仪表》2018年第8期5-9,25,共6页Automation & Instrumentation

基　　金：重庆市重点产业共性关键技术创新专项(重点研发项目)(cstc2017zdcy-zdyf X0032)

摘　　要：智能抄表是智能电网的一个主要发展方向,但是现有电能表抄表的通信方式很难满足低成本、强抗干扰能力以及远距离通信的需求。为此,该文设计了一种基于LoRa通信技术的单相预付费电能表。首先介绍了LoRa通信模块整体设计方案,重点对射频电路进行了仿真与分析;然后给出了电能表的总体设计方案;最后进行了电能表通信测试。测试结果表明,该电能表有效通信距离可达6000 m,通信距离远;可以实现穿过7堵墙和5层楼的有效通信,抗干扰能力强。因此,该电能表能很好地满足智能抄表的通信需求。Smart meter reading is a major development direction of the smart grid,but the existing communication method of meter reading is dif ficult to meet the needs of low cost,strong anti-interference ability and long-distance communication. For this reason,this article designed a single-phase prepaid energy meter based on LoRa communication technology. This article first introduced the overall design of the LoRa communication module,focused on the simulation and analysis of the RF circuit;then gave the overall design of the energy meter;and finally carries on the meter communication test. The test result shows that the effective communication distance of the electric energy meter can reach 6000 meters and the communication distance is long;Effective communication through 7 walls and 5 floors can be achieved,and the anti-interference ability is strong. Therefore,the power meter can well meet the communication requirements of smart meter reading.

关 键 词：LoRa 智能抄表 单相电能表 预付费 

分 类 号：TM933.4[电气工程—电力电子与电力传动]