Research On Networking And APPlication Of Wireless Sensor Network In Building Networking

Since the wireless sensor network and large data technology have been developing,a new stage of development for building intelligent system has taken place,and the wireless sensor network are applied more and more widely.However,the networking and application technology of wireless sensor networks need to be studied further,due to the particularity of building space.In this paper,the wireless sensor network,wireless positioning and environmental monitoring applications in the building are researched.The main structures of this paper are introduced as follows:Firstly,several common wireless communication technologies used in building are reviewed and their characteristics are compared.In addition,the background and chapter structure of the thesis are presented.Secondly,ZigBee wireless ad hoc network work is carried out based on the analysis of ZigBee network topology,protocol stack and node function.The article describes how to build a new network and how to join the network,and the ZigBee network is simulated.The result shows that the ZigBee network has self-organization and self-healing.Thirdly,as we all know indoor positioning is an important application of wireless sensor networks,this paper studied the indoor personnel localization algorithm.By monitor the wireless sensor nodes in the building space and collect the data between the multi-group signal strength and the actual distance which is curve-fitted by least squares.And then the coordinates of the wireless sensor nodes are calculated by the RSSI-based triangular centroid algorithm.Thus the indoor staff positioning is achieved.Finally,the building intelligent system environment monitoring platform and Mobile APP are designed.It include the hardware and software part,the hardware part includes the main control chip CC2530 and the sensor module(Temperature and humidity sensors,light intensity sensors,carbon dioxide sensors and PM2.5 sensors).The software part includes the upper computer and the lower computer software design,the lower computer software including the sensor driver,ZigBee networking,and data transmission.The upper computer software is completed in the Visual Studio 2010 and SQL server 2008,the collected environment information is displayed to the host computer interface in real time.In order to achieve the Intelligent Building monitoring.In this paper,a wireless sensor node based on ZigBee is designed,and ZigBee ad hoc network simulation experiment is carried out,on this basis,indoor location and environmental monitoring were studied.It will be more widely used in the commercial,public buildings and wisdom park in the future,it will play an increasingly important role in people's daily lives.Not only that,Environmental monitoring is closely related to people's lives,specifically in it is able to predict environmental pollution and provide strategies for reducing energy consumption in the construction sector.Therefore,it is very important to realize the indoor and outdoor environmental monitoring of the building to promote the sustainable development of the building.