【作者】 刘彦飞； 王成； 余成波； 乔晓军； 潘大宇；

【Author】 Liu Yanfei~(1 2) Wang Cheng~1 Yu Chengbo~2 Qiao xiaojun~1 Pan dayu~1 (1 National Engineering Research Center for Information Technology in Agriculture Beijing 100097 China; 2 Research Institute of Remote Test&Control Chongqing University of Technology Chongqing 400050 China)

【机构】 国家农业信息化工程技术研究中心； 重庆理工大学远程测试与控制研究所；

【摘要】 蒸腾量是反映植物生理信息的最重要的因素之一,在植物生理学领域可以通过测量植物茎流来推算出植物的蒸腾量。本文通过对茎流测量技术的研究,设计了一种非侵入式的基于ZigBee技术的无线茎流传感器,其采用了热平衡法,通过包裹式的加热探头给茎杆加热,由温度测量探头来确定茎流的热传输量。文中给出了茎流传感器的软硬件设计方案,并将传感器探头部分与ZigBee模块集成,实现了具有ZigBee网络功能的无线茎流传感器。最后将该传感器与以色列的PHYTALK茎流传感器进行了对比性实验,两者的相关性为0.938,而ZigBee茎流传感器具有更高的灵敏度。更多还原

【Abstract】 Transpiration rate is one of the most important ingredient to reflect the plant physiological information,we can calculate the plant transpiration rate by measuring the plant stem flow in the plant physiological field.Through researching the stem flow measurement technology,a kind of non-ablative wireless stem flow sensor based on ZigBee is designed in this paper,which used heat balance method and heat up the stem by the enwrapped calefaction probe,then the heat transfer quantity of stem flow is calculated by the value of the temperature probe.This paper presents the software and hardware design of stem flow sensor and integrates the ZigBee module,it makes the stem flow sensor has network ability.At last the comparative experiments between the wireless stem flow sensor and the Israel PHYTALK stem flow sensor was done,the correlation coefficient is 0.938,and the ZigBee wireless stem flow sensor has a higher sensitivity.更多还原