Temperature And Humidity Measurement System For Soil Stratification With CR1000-based

The parameters collection of Soil Stratification and their spatial and temporal relationships is the basis of soil water cycle research,irrigation management,and highly-efficient use of water resources,and is the end of the nerves for the smart agriculture and so on.The stable,reliable,pervasive and extendable soil stratification parameter solution helps to improve environmental monitoring level for the precision agriculture.From the practical point of view,with current popular sensors,data acquisition device,and B /S Web structure,this paper has proposed a soil temperature and humidity stratification parameter acquisition system with CR1000-based.The main works includes the following 4 aspects.(1)On the basis of technical analysis in both China and abroad,combined with the actual real-time demand on soil stratification parameter collection,the whole functions of the system design,preliminary design and key technologies are analyzed and discussed.(2)On the basis of requirements analysis,the analysis and selection of the current popular three soil sensors including humidity,temperature and soil moisture content,the connections of sensors and data-logger,the analog/digital data acquisition using CRBasic code programming,are completed,and ultimately the soil parameters collection system is achieved with accuracy of 5 decimal digits.(3)In consideration of the security of data access process,sensitive data of user accessing,the Brower / Server structure design of PHP server programming language,LNDB(LoggerNet Database,simply expressed as LNDB)database management software,MySQL database,JavaScript programming language,and Highcharts plugins are employed,and the synchronization among the data acquisition,data storage,and data demonstration is programed and completed.(4)Based on the construction of a system testing environment,the data acquisition for the soil sensors and data demonstration of clients are tested,and the newly-occurred trouble of soil temperature sensor is diagnosed and analyzed.