Design Of Multi-parameter Wireless Sensor Network Monitoring System In Precision Agriculture

Precision agriculture is the development direction of modern agriculture,it uses the information technology of global positioning system?GPS?,geographic information system?GIS?,sensor and detection system,the computer controller and variable equipment to monitor crop growth environment to improve the quality and the output of crops and maximize the protection of ecological environment,guarantee the sustainable development of agriculture.The development of agriculture relied on extensive use of chemical fertilizers,pesticides and other extensive agriculture development situation prompted the improvement of crop yields in the past.It led to the serious damage of environment,eutrophication,extreme waste of resources,global climate warming has become increasingly prominent problem.How to protect the ecological environment has become one of the biggest challenges that human beings should face,how to accurately and timely,continuous,detailed monitor crop growth environment,guarantee the healthy growth of crops,and does not destroy the natural environment.It is the focus of the transformation of economic development and innovation drive mode,which becomes a hot issue.In view of the above reasons,monitoring of crop growth parameters system arises at the historic moment.This paper studies and summarizes the problems of the traditional crop monitoring system such as monitoring the parameters of a single,monitoring steps complicated.This system gives consideration to two aspects,the monitoring of crop growth environment in the air and soil parameters,especially to monitor the content of soil organic matter.The representatives of the organic matter content of soil fertility,and organic matter provides nutrients for crops.This system adopts the STM32F107 master control chip to collect environmental data,using the short distance wireless communication technology sends the data to PC,PC and LCD monitor show the current environment of various parameters at the same time,and can compare the monitoring of the data with parameters of best parameters.If it is not in its scope,it will be sounded the alarm,It can prompt monitoring personnel to adjust crop growth environment and the measured parameters are saved as data table,you can always see any month of any point in time history data of various parameters,observe the approximate trend of the change of environmental parameters.Finally,comparative and analysis the standard value with meteorological data collected by the system.Experimental results show that: Temperature accuracy is up to 0.2 ?,humidity accuracy achieves 4.5% RH,Intensity of illumination accuracy can reach 4%,accuracy of CO₂ concentration is up to 0.3%,accuracy of O₂ concentration is up to 0.3%.Accuracy of organic matter is up to 0.2g·kg^-1.The indicators of environment parameters meet the accuracy requirements of precision agriculture multi-parameter monitoring system and the system can overcome the limitations of the complicated geographic environment and accurately and efficiently monitor the environmental data.