The Indoor Environment Monitoring System Based On WSN

The monitoring is an important mean to report indoor environment. However the large building is complex and wide monitoring range, the traditional wired network monitoring with cost, engineering quantity, integrated wiring inconvenient shortcomings.WSN have many advantages like flexible, wireless, and so on.so it has been more and more widely used in indoor environment monitoring, and it can effectively solve the problems existed in the traditional wired monitoring.This paper combined with the large indoor monitoring system and the WSN structer characteristics design a indoor environment monitoring system based on WSN,to realize monitoring indoor temperature, humidity, the concentration of harmful gases, and other environmental parameters, real-time monitoring, alarm, storage, query and other functions.Mainly finished the following work:1?The structer design of indoor environment monitoringThis paper combined with the need of indoor environment monitoring and the structer of WN design the structer of the indoor environment monitoring system. The structer divided into four parts as follows: monitoring center, gathering node, field testing,the client.2?The building of WSN environmental monitoringThe system's core is CC2530 and the foundation is ZStack to realize each interior node between the each interior node between ad hoc network and data acquisition node will be collected the data by the sink node to directly or indirectly transmitted to monitoring center.The system network is a tree structure, a single room is to the sink node as the center of the star shaped network. No location information of the monitoring data is of no significance,except for use to meet most indoor environmental monitoring symbol locating, for the larger indoor space where the weighted centroid localization method for precise positioning,weight according to the received signal strength determination, and introduces the particle swarm optimization Localization algorithm is optimized to improve the positioning accuracy.3?The design of environmental monitoringOn the PCside,the interface is based on JSP language to achieve user management,data query,display.Web server monitoring by lisitening to the browser,accoring to the browser sends out request and returns the corresponding data.This system use JDBC technology torealize the database management,the collected data through the database for storage and management.4?The Andorid APP design of environmental monitoringThe Android APP is divided for Java Server and client, the Java Server mainly complete the docking with the monitoring center, shared database and though the APP design implementation CS structure.The client completed the user login,historical data query,real time display and other funtions.The server and the client using WiFi connection,though the socket communications.