ACQUISITION OF PHYSICAL QUANTITIES USING REMOTE MICROCONTROLLER MSP430

Diplomsko delo predstavlja uporabo nizko porabnega mikrokrmilnika za zajemanje fizikalnih veličin (temperatura, tlak, itd…) v industriji. Senzorji veličin imajo merilne pretvornike, ki merjeno veličino pretvorijo v električno spremembo toka, običajno tokovno zanko 4-20mA. Zajemanje podatkov smo izvedli z razvojnim orodjem MSP430 eZ430-RF2500. Razvojno orodje ima dve enoti (oddaljeno napravo in vstopno točko), ki med seboj brezžično komunicirata in pošiljata podatke. Zajemanje veličin izvajata oddaljena enota in vstopna točka, pri tem koristita 10-bitni analogno digitalni pretvornik v mikrokrmilniku MSP430F2247. Vstopna točka pošilja podatke po serijskem kanalu na serijski vhod računalnika. Spremljanje in shranjevanje merjenih veličin se izvaja z uporabo grafičnega vmesnika, izdelanega s programom Labview.Work presents the use of ultra low power microcontroller to capture the physical parameters (temperature, pressure, etc ...) in the industry. Sensors measuring parameters are transducers that convert the measured into an electrical change in flow as a current loop 4-20mA. Data acquisition was performed by developing tools MSP430 eZ430-RF2500. Development tool has two units (remote device and access point) that wirelessly communicate with each other and to transmit the data. Recording of variables implemented end device and the access point at this benefit for 10-bit analog to digital converter is in microcontroller MSP430F2247. Gateway sends the data across a serial channel to the PC serial port. Monitoring and measurement data storage is implemented using an interface made by the Lab VIEW software