作物茎秆微变化无线监测系统的设计与实现  

Design and Implement of System for Measuring Micro- variation of Stem Diameter Based on Wireless

作　　者：王越[1,2] 刘剑飞[1] 罗斌[2] 陈泉[2] 潘大宇[2] 朱大洲[2] 吴建伟[3] 杨宝祝[3] 

机构地区：[1]河北工业大学信息工程学院,天津300401 [2]北京农业信息技术研究中心,北京100097 [3]北京派得伟业科技发展有限公司,北京100097

出　　处：《农机化研究》2014年第9期124-129,共6页Journal of Agricultural Mechanization Research

基　　金：国家高技术发展计划项目(2012AA10A503);"十二五"国家科技支撑计划项目(2012BAH20B0203);国家重大科技成果转化拨款项目(财建[2012]258号);农业科技成果转化资金项目(2012GB2A00001)

摘　　要：由于水资源紧缺的现状日益严重,灌溉农业朝着精细化、智能化的方向发展。针对作物水分状况的测量需求,基于线性可变差动变压器及无线采集传输模块,研发了茎秆微变化无线监测系统;通过对作物茎秆直径微变化的精确、无损、远程测量,直观地反映作物水分亏缺状况,进而指导作物精准灌溉。该系统具有简单易行、对植株不具破坏性、可长时间连续监测及自动记录的特点。试验结果表明,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0.923 1,可用于辅助指导作物灌溉。With the current situation of water shortage growing severe,the irrigation is becoming accurate and intelligent. To meet the requirement of crop water status measurement,a system for monitoring micro changes in stem diameter was developed,which was based on the linear variable differential transformer and integrated wireless collection and transmission module. Variation in crop stem diameter could be measured precisely,nondestructively and remotely,which was helpful to show the crop water status directly and then conduct the crop precision irrigation. The system is easy to operate and nondestructive to plants,which can also realize continuous monitoring and automatic recording. The results show that the correlation between stem diameter variation and soil moisture changes is significant,whose correlation coefficient reach up to 0. 9231,which could contribute to direct irrigation.

关 键 词：茎直径微变化 LVDT 无线数据采集 土壤含水率 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置] S126[自动化与计算机技术—控制科学与工程]