Application Research Of Wireless Sensor Network In Forest Fire Monitoring

The research on forest fire monitoring project has both social significance and ecological benefits.In order to measure the current methods of forest fire monitoring,combined with the requirements of forestry information,this paper carries out the research work of forest fire location early warning based on wireless sensor network positioning technology.Through the development of visualization system,it can help to carry out forest fire early warning and locate the exact fire location in time,so as to improve the emergency response ability of relevant departments to deal with forest resources fire.The key challenges are: due to the randomness of the deployment of wireless sensor network nodes in forest monitoring environment,it is difficult to determine the accuracy of nodes.In order to solve this difficult problem,the main work of this paper is as follows:(1)Through consulting a large number of literature,current news,newspapers and magazines,we can understand the main methods and development origins of forest fire monitoring,as well as the future development trend.This paper introduces the composition,characteristics and application fields of wireless sensing technology.This paper introduces the composition,characteristics and application fields of wireless sensing technology.Based on the analysis of the current development of wireless sensor network positioning technology and the research hotspot algorithm,the classic non distance based positioning method DV hop model is selected and applied to the forest fire monitoring system in this paper.In the working process,the main advantages of the algorithm and the main factors affecting the positioning accuracy,the meaning of beacon nodes and unknown nodes are analyzed,and the simulation experiment after the key scene parameters are changed is completed.(2)Two improved strategies are proposed for the distance estimation step of the classic DV hop model.The multi hop transmission path between nodes is modeled as node number string and set respectively.Based on string similarity factor and set similarity factor,the path between the most similar beacons is determined to estimate the distance between unknown nodes and beacons,so as to improve the accuracy of distance estimation.Three improved strategies are put forward for the location calculation steps of the classic DV hop algorithm.The relationship between coordinates and Euclidean distance between unknown nodes and multiple beacon nodes is modeled as a non-linear equation group.Three optimization algorithms are respectively used to optimize the initial location of unknown nodes,so as to improve the positioning accuracy of the final nodes.In the MATLAB programming environment,the location superiority of the improved algorithm combination is verified.(3)A prototype system of forest fire monitoring based on wireless sensor network information processing is designed,in the system,we can preview the general situation of node deployment,compare and analyze the performance of different algorithms for ranging and positioning,locate and feed back the position of abnormal nodes,realize remote controlof nodes,distribute sensor threshold,and analyze the data receiving and processing exceptions of a single node.Combined with the theoretical research and simulation results,it can be concluded that the application of wireless sensor network technology to the forest fire location monitoring project is of considerable theoretical significance and good application prospects.