基于LoRa的智能抄表系统设计与实现

Design and Implementation of Smart Meter Reading System Based on LoRa

摘要:

针对ZigBee在无线抄表网络中通信距离短、网络路由复杂、抗干扰能力弱的缺点,提出了一种基于LoRa的无线智能抄表系统的设计方案；该方案以SX1278的LoRa调制技术为核心,采用星型、链型网络进行自组网络设计,构建了通信距离远、可抵抗多种干扰源等复杂网络环境下的智能抄表系统；介绍了系统网络拓扑结构、LoRa节点软硬件和应用层自定义通信协议的设计过程,实现了对智能电表的能耗数据采集和远程管理,最后对系统进行了测试分析；实验结果表明,该方案具有通信距离远、功耗低、组网便捷、实时性好的特点,有着广泛的应用前景。

Abstract:

Targeting for the shortcomings of ZigBee technology in wireless meter reading network, which offers short communication distance, complexity of network routing and poor ability of anti-interference, a new scheme of LoRa technology based wireless smart meter reading system is proposed. The system is based on long communication distance and resists the interference, using LoRa modulation technology of SX1278 as the core and ad-hoc network is designed using star networks and chain networks. The design process of network topology for the system, the node hardware and software for the LoRa, and the application-layer protocol are introduced to implement the energy consumption data acquisition and remote management of smart metering. The final tests indicate that the scheme has the long communication distance, low power consumption, easy networking and full practicability.