基于LoRa的低功耗温度采集传感器系统设计  

Design of Low Power Temperature Acquisition Sensor System Based on LoRa

作　　者：印华 方挺 董冲 胡祥翱 YIN Hua;FANG Ting;DONG Chong;HU Xiangao(School of Electrical and Information Engineering,Anhui University of Technology,Auhui Maanshan 243000,China)

机构地区：[1]安徽工业大学电气与信息工程学院,安徽马鞍山243000

出　　处：《重庆工商大学学报（自然科学版）》2024年第1期53-59,共7页Journal of Chongqing Technology and Business University:Natural Science Edition

基　　金：安徽工业大学校青年基金(QZ202109),安徽省工业互联网智能应用与安全工程实验室开放基金(IASII21-05).

摘　　要：针对工业高炉冷却水温监测长期运行、维护成本高问题,设计一种基于LoRa(Long Range)的远距离低功耗无线传感器网络系统;系统搭建基于LoRa通信水温采集终端的模块能耗计算模型,通过对计算模型分析,提出了一种基于LoRa协议层的时钟同步协议和时分多址联合优化的无线通信策略;该策略利用LoRa通信技术完成信息交互,实现网关与终端节点的高精度时钟同步;网关完成可对无线资源调度,动态分配终端节点的时隙资源,以实现数据周期性上传,降低数据传输碰撞的概率,并优化无线资源的使用效率;实验表明,该通信策略与ALOHA通信协议相比,显著提高了通信的投递率和能源效率,进一步提高了LoRa在网络中的性能,所提出的联合优化的无线通信策略是有效的。Aiming at the problem of long-term operation and high maintenance cost of industrial blast furnace cooling water temperature monitoring,a remote low-power wireless sensor network system based on LoRa(Long Range)was designed.The system built a module energy consumption calculation model based on LoRa communication water temperature acquisition terminal.Through the analysis of the calculation model,a wireless communication strategy based on the clock synchronization protocol of LoRa protocol layer and the joint optimization of time division multiple access was proposed.This strategy used LoRa communication technology to complete information interaction and achieve high-precision clock synchronization between gateway and terminal node.The gateway completed the scheduling of wireless resources and dynamically allocated the timeslot resources of terminal nodes,so as to realize the periodic upload of data,reduce the probability of data transmission collision,and optimize the use efficiency of wireless resources.The experiment showed that this communication strategy significantly improved the delivery rate and energy efficiency of communication compared with ALOHA communication protocol,and further improved the performance of LoRa in the network.The jointly optimized wireless communication strategy proposed in this paper is effective.

关 键 词：LoRa 无线传感器网络 能耗模型 通信策略 

分 类 号：TN914[电子电信—通信与信息系统] TP212[电子电信—信息与通信工程]