Research Of Indoor Environment Monitoring & Comfort Degree Valuating System

In modern society, people are paying more and more attention to their living environment, especially the indoor environment. With the high-speed development and the wide application of computer, communication and network, the combination of automatic measure & control technology, computer technology and communication technology has become a development direction of measure & control research. Therefore, this paper puts forward the research of indoor environment monitoring & evaluating system. It combines sensor technology, embedded system and Internet technology, and makes indoor environment monitoring module into network product as a net nod. It can finish data communication with computer directly in order to indoor environment information real-time publishing and sharing, and it also finishes the evaluation of indoor environment comfort degree in virtue of information fusion technology.The indoor environment monitoring & evaluating system mentioned in this paper is made up of two parts—the top layer system and the bottom layer system. The bottom layer system consists of MCU embedded module, data-acquisition module, interface module of TCP/IP standardization communication and LCD display module. This paper analyzes the characteristics ofμC/OS-II, and completes its transplant to ARM7TDMI LPC2290, discusses how to scissor normal TCP/IP and embed it inμC/OS-II according to the demand, and develops hardware modules and corresponding software modules, including data-acquisition subprogram, communication subprogram, LCD display subprogram and so on, and then embeds all the subprogram modules intoμC/OS-II to realize task communication and scheduling, in order to realize the function of the bottom layer system.The top layer system is mainly finished remote monitoring of indoor environment parameters and evaluating for the indoor environment comfort degree, it includes real-time oscillograph module, waveform analyzer module, parameter setting module, event alarm module and comfort degree evaluation module, etc. The top layer system is developed based on LabVIEW and it also realizes the analysis of indoor environment parameters & the evaluation of comfort degree in virtue of the interface technology between LabVIEW and C language & MATLAB.Finally, the experiment and debugging of the whole indoor environment monitoring & evaluating is finished. The results show that the system could implement the functions of data-acquisition of indoor environment, Ethernet communication and remote monitoring and so on. The system has the characteristics of easy expansion, telecommunication, friendly man-computer interaction, high reliability, etc.