基于频域反射法的便携式土壤水分检测仪研制  

Development of portable soil moisture detector based on principle of frequency domain reflectometry

作　　者：江朝晖[1] 檀春节[1] 支孝勤[2] 王春生[1] 马友华[2] 

机构地区：[1]安徽农业大学农业信息学安徽省重点实验室,安徽合肥230036 [2]安徽农业大学资源环境与信息技术研究所,安徽合肥230036

出　　处：《传感器与微系统》2013年第1期79-82,共4页Transducer and Microsystem Technologies

基　　金："十一五"国家科技支撑计划资助项目(2009BADA6B02);安徽省高校自然科学研究重点项目(KJ2012A103)

摘　　要：根据土壤墒情监测的具体要求,研制了一种新型便携式土壤水分检测仪。基于频域反射(FDR)原理采集土壤容积含水量,采用标准的烘干称重实验对测量结果进行校正,并同时获取检测点经度、维度信息及实时时间,通过GPRS/GSM及时传送给远程数据中心和责任人。实地测试表明:土壤水分测量误差<3%,数据传输无误。该仪器性价比高,操作简便,适合农技人员使用,对土壤墒情实时监测和智能决策具有重要现实意义。According to the specific requirements for soil moisture content monitoring,a new type of portable soil moisture detector is developed.The instrument measure soil moisture based on principle of frequency domain reflectometry（FDR）and calibrates the result by standard method of drying-weighing,obtain geographic location and test time at the same time.Measurement information is transferred to remote data center and mobile phone via GPRS/GSM in time.Field tests show that the measurement error is less than 3 %,data transmission without error.The new portable soil moisture detector has advantages such as high cost-effective,simple operation,which is suitable for agricultural technician to use,has important practical significance for soil moisture real time monitoring and intelligent decision-making.

关 键 词：土壤含水量 频域反射 远程无线通信 便携式检测仪 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]