Study And Design Of Indoor Objects Managing Ststem

There are some shortcomings for indoor objects managing,such as entry-exit inspection,high managing cost,low managing efficiency,etc.A kind of indoor objects managing system based on WiFi and RFID technology is proposed in this paper.This subject comes form company cooperation project,the thesis includes the following aspects:An improved scheme,which uses the Hierarchical Chain-tree Routing Protocol Based PEGASIS,is proposed to solve the redundant data collection and transmission in the uneven distribution of nodes in WSNs.Simulation results show that the network lifetime of the new method could be prolonged more than 20% comparison to LEACH,HCTRP-PEGASIS.In real scenarios,the shadowing effect of obstruction affects the distribution of cluster-heads and reduces communication quality.A new cluster head selection method based on LEACH is presented to solve those problem.Compared with LEACH,ALEACH and Kost-LEACH algorithms,The nodes utilization could enhance more than 2.0%.An indoor objects entry-exit is designed in this paper.This system is based on WiFi and RFID and contains the following parts:The hardware of the system consists of WiFi module,RFID card reader,tag,antenna and STM32F103 minimum system.Those parts are all integrated in one circuit board;The mobile terminal application APP is programmed to realize the function of analyzing and displaying the actual data on time;The optimized LANDMARC protocol is applied in this system to supervise the entry-exit of the objects.The system could acknowledge objects statue and achieve remote control in real time after a lot of experiments.This system could be extended application in the large farm,jewelry store,supermarket,etc.It could enhance the management efficiency and decrease the labor resources.