Study On Integrated Control Strategy Of Mobile Node Tracking In Sensor Networks

Wireless sensor networks(WSN)technology,which integrates sensor technology,embedded technology,modern network,wireless communication technology,and distributed technology,is a highly integrated technology that involves multiple disciplines.The mobile node is a basic part of WSN,and it can be set to "semi-automatic",that is to say,it can run along a scheduled track,and its monitoring function can be realized.Therefore a control strategy is important for the mobile node to run along the track,and selecting the reasonable control strategy can improve the tracking effect.This paper mainly studies the tracking control strategy of the mobile node in WSN.Path recognition system is like the eye of the mobile node.This paper uses photoelectric sensors to design a path identification system.Due to the uncertainty and complexity of the track,after the path identification system providing correct and effective path information,a corresponding control strategy can be selected according to different paths,which can avoid the problem that single control strategy is difficult to deal with complicated road conditions.Therefore,it is necessary to design a strategy controller,and the mobile node can switch control strategies in real time according to the road conditions to improve the overall effect of tracing.So it is necessary to study the control strategy for multiple different paths.First of all,this paper analyzes the tracing function of the mobile node,and designs the overall architecture of the mobile node's tracking control system.The tracking control system of the mobile node based on STC15w4K32S4 is designed,which mainly includes controller module,path identification module,servo steering module,motor drive module,power module and sensor module.Secondly,this paper adopts the control algorithm of incremental PID to design the control system and merges it to the mobile node,and then optimizes the PID parameters according to the tracking effect of the mobile node.At the same time the control effect of the control system is tested.Thirdly,the fuzzy control algorithm is used to design the control system of the mobile node in this paper.Through the tracking effect of the mobile node,the stability and reliability of the control system are also tested.Finally,according to the experimental tracking data of the mobile node,the control effects of the PID control algorithm and the fuzzy control algorithm on different road conditions are analyzed and the strategy controller is designed.In this way,the mobile node encounters different paths in the tracking process and can switch a control strategy which is suitable for the road,thereby to the greatest extent that improves the tracking effect of the mobile node.