Research And Design Of Agricultural Monitoring System Based On Wireless Sensor Network

The rapid development of wireless sensor networks has made it widely used in various potential areas.At present,the application of wireless sensor networks to information agriculture has become a hot topic in many countries,and the whole world is committed to improving the market competitiveness of farm products and realizing the sustainable development of agriculture.Therefore,how to realize the application of wireless sensor network to scientifically manage crops and increase the increase in agricultural production,has important theoretical and practical value.The design of the agricultural monitoring system in this paper focuses on the detection of crop growth environment.The system combines the embedded and self-organizing wireless sensor network to study how to use wireless sensor network technology to realize the information collection,transmission and data presentation in crop growing environment and observers can monitor the environmental information of crops in real time by browser.The whole detection system is composed of three functional nodes:cluster head node,cluster node and sink node.The network is composed of several cycles.In each cycle,the detection node transmits the collected environment information to the cluster head node by wireless after the nodes form a network,then the cluster head node is responsible for transmitting the received information to the sink node,and finally the information is uploaded to the server by the sink node.Firstly,the data between the various nodes of the system are sent and received by CC2530 wireless RF chip.In order to ensure the low power consumption of the network,the cluster nodes and cluster head nodes adopt MSP430 chip with ultra-low power consumption in the hardware,and the selection of the device is also fully consider the low power consumption.In addition,a special gated circuit of sensor power supply is designed.In order to improve the performance of the algorithm,the sink node uses the STM32 chip with strong data operation abilitySecondly,according to the complexity of agricultural environmental detection and low power consumption characteristics,an improved LEACH protocol is proposed.The new protocol improves the original single-hop transmission protocol,which has cluster head election random cluster head,uneven distribution.The simulation results also demonstrate the advantages of the new protocol.Besides,the software is designed on the basis of the improved self-organizing protocol.Through the analysis of the operation mechanism of the improved protocol and the process of the network,we design a variety of functions in the network and realize the multi-hop self-organizing network.The conversion of heterogeneous network data is completed by the sink node,the data is uploaded to the server after unpacking,and the server uses Tomcat,the database uses MySQL,the website development model is simple MVC.Finally,the network function,power consumption characteristics and the modules of the system are tested.The experimental results show that the design of the agricultural monitoring system is stable,low power consumption,small size,low cost,convenient networking,long detection time and so on.It can be used to monitor crop growth environment information in real time,and has certain practical value and application scene.