The Research And Implementation Of Home Interior Environment Monitoring System Based On Internet Of Things

With the rapid development of social productivity and the continuous improvement of living standards,people not only pay more attention to the influence of the quality and comfort of indoor environment on health and work efficiency,but also require more on the quality and comfort of the environment.Therefore,it is of great significance to effectively monitor the indoor environment and accurately evaluate the indoor environmental quality.Based on this background,combining with the actual needs of indoor environment monitoring,we will apply the related technologies of Internet of Things(IOT)to design and implement a set of IOT-based home indoor environment monitoring system,which can monitor multiple indoor environmental applications’ characteristic parameters of multi-sensor data fusion technology for the integration of collected data,and then make a comprehensive evaluation for the comfort degree of home environment.In this paper,the IOT program and key technologies are analyzed in detail.Based on the three-tier program of IOT,the overall structure of the system is divided into modules of the environment characteristic parameter acquisition,the data collection uploading and storage processing.The environment characteristic parameter acquisition module is composed of the ZigBee node and data acquisition sensor,which realizes the data collection,convergence and transmission to the IOT gateway.The data collection and upload module is mainly constructed of the IOT gateway.The popular card machine RPi3 B is selected as the development platform for data analysis,encapsulation and final upload to the IOT cloud platform.Data storage and processing module takes the IOT cloud platform of OneNET as the core,which is responsible for the storage and management of data,which can be checked by using different applications and terminals.It is easy to deploy and implement the system due to small hardware devices,flexible and efficient networking and stable transmission of data.The system uses Multi-sensor data fusion method to process the data.A data fusion algorithm,based on fuzzy closeness degree and fuzzy comprehensive evaluation method of fuzzy theory,is proposed to improve the accuracy and reliability of data and realize the comprehensive evaluation of indoor environment comfort degree.