Positioning And Tracking System For Prison Inmates Based On NanoPAN5375

In recent years, prison accidents continue to occur, criminals escape, violence, and so often occur, the impact is very bad, prison security is also facing severe challenges. In order to ensure the security of the prison, we must make full use of modern science and technology in addition to the static protection. In this thesis, through the innovation of the prison inmates tracking system,real-time monitoring of the dynamics of prisoners, you can improve the efficiency of prison monitoring, improve the security of the prison. In existing for prisoners location and tracking technology, infrared, RFID, Wi Fi, ultrasonic, UWB and Zig Bee and. However, in prisons such a special environment, and other technology compared based on the obvious CSS technology of nano PAN5375 module advantages, its not only the ranging precision of high and far distance communication, penetration ability strong.This thesis designed a nano PAN5375 module based on the prison inmates positioning and tracking system, mainly including the positioning and tracking system design and implementation,the positioning algorithm research, system performance test and analysis. Firstly, each node of the slave module: hardware design, data base node, tag node receiver USB stick node, the base station node and node labels are used nano PAN5375 module design for hardware based, and data receiver USB stick node through the USB interface and PC communication system; using SDS-TWR algorithm to achieve the function of distance between the distance and the label of each base station, and combined with the active ranging scheme is completed, the base station node label node and data receiver USB node program of stick; on C++ language development environment in the development of Qt based on PC monitoring system, PC monitoring system by first reading and the realization of interactive and ranging system ranging data the USB interface from the analysis,then the ranging data through the Calman filter algorithm and fingerprint matching algorithm to calculate Coordinate position and the monitoring interface show that in order to improve themonitoring efficiency monitoring interface design increases the prisoner real-time trajectory display function. Finally the system were overall test, to achieve the desired effect.In this thesis, the positioning algorithm is also deeply studied, especially the research and application of Calman filtering algorithm and distance based fingerprint matching algorithm has achieved very good results. Kalman filter algorithm is used to improve the ranging accuracy and precision of coordinates; distance based fingerprint matching algorithm is combined with distance filtering effect proposed a in prison under the environment of new applications, and at the end of the experiment show that the algorithm is effective and feasible.