A Design Of Indoor Environmental Monitoring System Based On Bluetooth Low Energy

With the sustained and rapid economic development of China and the resulting improvement of people's living standards,the civilians have placed more demands on life qualities.Meanwhile.the wide advertise on media has awaken stronger environmental awareness of the society.More attention has been giving to the indoor environmental pollution as well as that of air,water and etc.People are eager to get the information about the present indoor environment,and finally,to avoid the health damage by the indoor pollution.The present indoor environmental monitoring requires high input and technology.In this thesis,a new monitoring system based on low-power Bluetooth technology was brought forward.Low-power Bluetooth SOC chip CC2640 was selected as the embedded processor.Multiple sensors for inhalable particles(PM 2.5),volatile organic compounds(VOC)such as methanal and benzene,temperature and humility were set as monitoring nodes.To wirelessly connect the monitiring nodes,low-power Bluetooth technology was adopted.Data collected by the nodes were read by a specially devolped application based on Android platform and visually shown to the users on the smart phones.Tests demonstrated that the system possess high presicion,adorable price and simple operation,which make a promising maket outlook for the system.The thesis gave a detailed introduction for the main technologies and the overal implementation scheme of the monitoring system.Firstly,the structure of the system and the main technologies were demonstrated from the piont of realization principles;secondly,the low-power Bluetooth technology,key parameters of the sensors,the achitecture of Android Platform and the programming keys were explained;thirdly,the software and hardware realization details for the functional mudules of monitoring nodes and display terminals on smart phones were explicitly shown;finally,by the measurement and analization of hardware parameters,the application performance of the system was fully exhibited.The indoor environmental monitoring system based on low-power Bluetooth technology could meet the present needs of indoor environmental pollution monitoring.If combined with Cloud Technology and Big Data operation,the system may provide environmental monitoring and data prediction for a large-scale region,which shall have a promising maket application.