HARDWARE AND SOFTWARE OF THE INDOOR AIR QUALITY MONITORING SYSTEM

Abstract

The work is devoted to the development of hardware and software for indoor air quality monitoring system. The analysis of existing solutions in the field of home air quality monitoring systems was carried out, their main advantages and disadvantages were highlighted, as a result of which the requirements to the developed system were presented. Based on the requirements, the general structure of the system was developed, and the means for the implementation of its hardware and software were selected. In particular, it was decided to develop a system based on the concept of "Internet of Things", and the following components: data collection node, data processing and storage server, client applications (web interface and mobile application for Android operating system. Node for data collection from sensors and sending requests for the server were designed on the basis of the microprocessor board ESP8266, the interaction between the nodes of the system was implemented using HTTP-requests, as a result, designed and implemented hardware and software for indoor air quality monitoring system based on the concept of "Internet of Things" and allows to monitor the current air quality, as well as view the data of previous records using user interfaces.Two user interfaces have been implemented: web-based (based on the developed site structure), using web development technologies, and as an application for mobile devices, running on the operating system Andr oid (based on the developed activity and class diagram, using the Java programming language. Testing and examples of using these user interfaces in real conditions. The developed hardware and software solution allows to effectively solve the problem of monitoring indoor air quality indicators, and the cost of the component base and development costs is lower than the cost of ready-made commercial solutions with similar characteristics.