基于LPWAN物联网的光伏温室智能监控系统设计  

Design of Intelligent Monitoring System for Photovoltaic Greenhouse Based on LPWAN Internet of Things

作　　者：海涛[1] 李娜娜 周文杰 陈娟[1] 宋敏 HAI Tao;LI Nana;ZHOU Wenjie;CHEN Juan;SONG Min(College of Electrical Engineering,Guangxi University,Nanning Guangxi 530004,China)

机构地区：[1]广西大学电气工程学院,广西南宁530004

出　　处：《广西师范大学学报（自然科学版）》2021年第5期100-109,共10页Journal of Guangxi Normal University:Natural Science Edition

基　　金：国家自然科学基金(51867003);广西科技计划项目(桂科AB16380193);科技创新平台(基地)与服务能力建设项目(AE30200067)。

摘　　要：针对大型温室现存能耗高、监测困难以及自动化管理水平不高的局限,设计了集光伏发电、低功率广域物联网(LPWAN)和云平台技术于一体的温室智能监控系统。根据桂南气候特征和茄果类蔬菜生长特性,通过ECOTECT对比分析温室2种光伏排布的光照和温度,得出棋盘式光伏温室采光和散热更适宜其生长。下位机利用LoRa和NB-IoT特有优势自组星状结构采集、传输温室环境参数,上位机结合B/S结构、RBF-PID智能控制策略、云平台技术在PC和移动端实现远程监测和智能调控。应用表明该系统在复杂环境下通信距离1.5 km时丢包率不超过3.4%,通信成功率在96%以上,满足大型温室环境信息实时采集和稳定传输要求,并能长期将各环境参数维持在最佳生产阈值内,有助于提高茄果类蔬菜的产量和品质,也为光伏温室智能化监控系统提供一种新思路。In view of the limitations of high energy consumption,difficulty in monitoring and low level of management automation in large-scale greenhouses,the intelligent monitoring system of greenhouse integrating photovoltaic power generation,Low power Wide Area Internet of Things(LPWAN)and cloud platform technology has been designed.According to the climate characteristics of southern Guangxi and the growth characteristics of nightshade vegetables,the light intensity and temperature of the two photovoltaic arrangements in the greenhouse were analyzed by ECOTECT,and it was concluded that the lighting and heat dissipation of the chessboard photovoltaic greenhouse were more suitable for its growth.The greenhouse environmental parameters are collected and transmitted by the LoRa and NB-IoT of the lower computer using its unique advantages in the self-organized star network.Remote monitoring and intelligent supervision are realized on PC and mobile terminal through B/S structure,RBF-PID intelligent control strategy and cloud platform technology.The application shows that the system has a packet loss rate of no more than 3.4%at a communication distance of 1.5 km in a complex environment,and its communication success rate of more than 96%.And it can maintain various environmental parameters within the optimal production threshold for a long time,which helps to improve the output and quality of nightshade vegetables,and also provides a new idea for the intelligent monitoring system of photovoltaic greenhouses.

关 键 词：无线传感网络 光伏发电 低功率广域物联网 LoRa NB-IoT 远程监控 

分 类 号：TP227.2[自动化与计算机技术—检测技术与自动化装置] S625.3[自动化与计算机技术—控制科学与工程]