Ανάπτυξη συστήματος μέτρησης περιβαλλοντικών συνθηκών & προσδιορισμού θερμικής άνεσης σε φορητή πλατφόρμα κινητής τηλεφωνίας
Development of measurement system for environmental conditions & determination of thermal comfort on mobile telephone platform
Χριστοδουλίδου, Μαρία, Κ.
SubjectΤηλεπικοινωνίες -- Περιβαλλοντικές απόψεις ; Κινητή τηλεφωνία ; Telecommunication -- Environmental aspects ; Mobile communication systems
This thesis examines the development of a measuring environmental conditions system for the determination of thermal comfort on a mobile telephone platform. Firstly we study the thermal comfort criteria and the environmental conditions that influence the comfort. Also we study the instruments for measuring these physical quantities. Additional we evaluate the characteristics of available operating systems and materials to enable the measurement system implementation. The examination of these characteristics is the basis for the selection of appropriate materials and the mobile platform for the development of the application, which in this case is the iOS platform. For measuring and recording equipment we choose the Arduino Uno SMD board with microprocessor and thus the programming language C. The selection of a platform dictates the development environment that has to be used, which for iOS is the Xcode environment with Objective C/C++ programming language. The software development follows the UML methodology which is based on the creation of diagrams as intermediate products during the development of the static, as well as the dynamic system model. The application was developed according to the requirements and calculations in standard ISO 7730 "Ergonomics of the thermal environment - Analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria". Finally, the thesis presents a comparative analysis of the measurements acquired by our measurement system, with those obtained through the use of specialized measuring instruments.