Localization Technology Research Based On Dynamic PIP Network

The PIR not only has low power consumption,high sensitivity,low cost,stableperformance,but also has the characteristic of passive detecting, So it is used broadly such asautomatic control and prevent invasion of alarm system and so on. This article is mainly thedesign and implementation of localization technology research based on dynamic PIRNetwork.The system which can detect a large range area and locate the target who enteringthe sensor network detection.Through the dynamic use of the PIR, realized the PIR to detectthe line from the static domain large area in front of the field detection,solves the PIR for thelow sensitivity detection of radial motion target detection ability is poor and cannot detect thestatic target problem.This paper based on the infrared radiation characteristics and working principle of thePIR, set up the dynamic PIR detection system, to implement a wide range of area targetdetection; Secondly, through the system analysis and research the target infrared signalcharacteristics (including static and dynamic characteristics, signal), and combined withdynamic system characteristics, using the background image difference method and framedifference method between the given target orientation; Finally, aiming at the shorcomings ofthe single node target positioning, put forward the target node dynamic sensor networkpositioning technology solutions, four nodes in sensor networks target localization algorithmis given, and through experiment data acquisition and PC software simulation verified thevalidity and accuracy of target localization algorithm more nodes.Compared with the routine use of pyroelectric sensor, using dynamic PIR network for themoving target positioning greatly extended its detection performance and range, as well as itsapplication in the field of monitoring and tracking to lay a solid foundation.