【作者】 王越；

【导师】 刘剑飞；

【作者基本信息】 河北工业大学 ， 电子与通信工程， 2014， 硕士

【摘要】 随着电子信息技术在农业领域的应用日渐广泛，我国农业开始由传统农业向数字化和信息化方向转变，对各类作物的相关研究也随之增多，作物生产智能监控成为农业生产的关键技术。本文基于已有的作物生理生态信息及环境信息传感检测装置，研究了作物生理生态信息综合检测系统。本文首先研制了作物茎秆直径微变化及作物光合/呼吸/蒸腾参数的传感检测系统，构建了基于无线传感器网络的节点系统。节点测量信息包括作物茎直径微变化、光合呼吸蒸腾速率等作物生理信息，子节点通过无线方式将信息发送至中继路由，再由中继路由发送至终端节点，终端节点通过串口RS232将数据传至数据采集终端。数据采集终端以工业用触摸式平板为主体，结合多传感器信息融合技术，对来自多源传感器的多类不同特征信息进行融合处理，采用模块化的编程方法，实现了数据的显示、存储及绘制曲线。然后对系统进行了测试，实验结果表明：作物茎直径微变化监测系统具有简单易行、对植株不具破坏性、可长时间连续监测及自动记录的特点，其测量的茎秆变化情况与土壤含水率变化具有显著的相关性，相关系数可达0.9231，可用于辅助指导作物灌溉;作物光合/呼吸/蒸腾参数测量系统可以较准确地进行测量工作，所测光合参数能够反映作物叶片光合速率在一天中的变化情况。最后分析了系统的误差来源，提出提高系统精度的方法，扩展了硬件和软件的功能，这对于改善系统的性能参数有较大的指导意义。更多还原

【Abstract】 With electronics and information technology increasing, China’s traditional agriculturebegan to toward digital and information technology direction and research on various cropsalso increases. Intelligent monitoring on agricultural production become more and moreimportant. The integrated physiological and ecological information crop detection systemwas developed based on the existed physiological and ecological information sensingdetector on crop.Firstly, a system for measuring micro-changes of stem diameter and photosynthetic/breathing/transpiration parameters of crop was added. The node system based on wirelesssensor network was built to measure crop physiological which consists of micro-changes ofstem diameter, and photosynthetic/transpiration/breathing rate. The relay route receivedinformation from sub nodes and sent it to terminal node by wireless way. The terminal nodetransmit data to data acquisition terminal through RS232serial port. In data acquisitionterminal, touch tablet for industry was used as the main part. Combined with technology ofmulti-sensor information fusion, modular programming method was used to realize the datadisplay, storage, and curve.Secondly, the corresponding testing work is done. The experimental results showedthat system for measuring micro-variation of stem diameter is easy to operate andnondestructive to plants, which can also realize continuous monitoring and automaticrecording. The correlation between stem diameter variation and soil moisture changes issignificant, whose correlation coefficient reach up to0.9231, which could contribute todirect irrigation. The experimental results also showed that system for measuringphotosynthetic/breathing/transpiration parameters of crop could reflect cropphotosynthetic rate in one day accurately.Finally the error source of system was analyzed. The method to develop performanceof system was proposed. The function of software and hardware was extended. It has agreat significance to improve the performance of the system parameters of the system.更多还原