| 摘要: |
| 为合理增施CO2气肥以提高日光温室作物产量和品质，基于无线传感器网络设计开发了日光温室CO2浓度监控系统。该系统由监控节点、网关节点和远程管理软件组成。监控节点用于测量作物冠层和根部处的CO2浓度，并可控制CO2气肥增施装置的开关；网关节点用于实现远程管理软件与监控节点之间的通讯；远程管理软件具有友好的人机交互界面，能实现温室内CO2数据的实时显示、存储、分析和CO2气肥调控，还可对无线传感器网络进行参数配置。以开发的系统为基础，对日光温室番茄作物冠层和根部CO2浓度进行监测和调控试验。试验结果表明：设计开发的节点数据传输稳定，平均丢包率为0.13%，CO2控制平均超调量为64 μmol/mol。系统工作稳定可靠，满足温室番茄作物CO2浓度监测与调控的技术要求。 |
| 关键词: 日光温室 ZigBee GPRS 无线传感器网络 CO2浓度调控 |
| DOI：10.11841/j.issn.1007-4333.2014.04.25 |
| 投稿时间：2013-11-08 |
| 基金项目:国家自然科学基金资助项目（31271619）；教育部博士点基金（20110008130006；20100008110030） |
|
| Development of a CO2 concentration monitoring and controlling system in solar greenhouse based on WSN |
|
JIANG Yi-qiong, ZHANG Man, LI Ting, SHA Sha, WANG Wei-zhen, LI Min-zan
|
| (College of Information and Electrical Engineering/Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China) |
| Abstract: |
| Increasing CO2 fertilizer rationally for plants can improve the net photosynthetic rate,thereby improve the crop yield and quality.In order to achieve precision management of CO2 fertilizer in solar greenhouse,a CO2 concentration monitoring and controlling system was developed based on wireless sensor network.The system included several monitoring and controlling nodes,a gateway node and a remote management software.The monitoring and controlling nodes could sense CO2 concentration in the root and canopy of plants respectively,and control the switch of CO2 supply device.The gateway node,as a bridge from ZigBee to GPRS,could process and transmit the data or commands between sensor nodes and remote management software.The remote management software could provide a friendly interface between user and machine.Users could inquire the real-time data,and set the CO2 concentration control rules and parameters of wireless sensor network.Based on the developed system,the distribution of CO2 concentration in the root and canopy of tomato was monitored and controlled.The experimental results showed that the designed system could transfer data stably,the average value of packet loss rate was 0.13%,and the average overshoot of CO2 control was 64 μmol/mol.The designed system could work stably and reliably,and it could be used to monitor and control the CO2 concentration in solar greenhouse. |
| Key words: solar greenhouse ZigBee GPRS WSN CO2 concentration monitoring and controlling |
