Using LabVIEW to Monitor and Control a Weather Station Rafael Arnette South Carolina State University NASA PAIR 2002 Science Team Rafael Arnette Computer Science Kenneth Brown Electrical Engineering Marcelite Jenkins Electrical Engineering Armogan Raju Industrial Engineering Dr. J. Payne Faculty Mentor Project Components 1. LabVIEW Weather Station Virtual Instrument (VI) 2. Lightning Detection System 3. LabVIEW Spectrometer VI 4. Research of RS CVn Binary Stars Project Goal and Purpose • Create a LabVIEW VI that will monitor and control a commercial weather station • To provide meteorological information needed for operation of the radio telescopes and allow for alarms for specific weather conditions at the Pisgah Astronomical Research Institute (PARI). Weather Station Overview Rainwise WS 2000 • 418 MHz wireless weather station • Solar powered • Range of 400 feet CC-2000 Computer Interface • Records and stores weather data • Connects to computer through serial port Weather Station Overview Weather View 32 Displays: Wind Speed, Wind Direction, Temperature, Barometric Pressure, Rainfall, Relative Humidity Weather Station Overview Weather View JAVA Viewer • allows visitors to view your Weather Station in real time • viewable from most web browsers in any operating system • gives you the option of viewing in English or Metric measurement. http://physics.scsu.edu/weather/ What is LabVIEW? • a graphical development environment with built- in functionality for data acquisition, instrument control, measurement analysis, and data presentation • gives you the flexibility of a powerful programming language • delivers extensive acquisition, analysis, and presentation capabilities in a single environment Weather Station LabVIEW VI • a serial port on the computer reads the data received in the computer interface • data received is displayed using a series of dials, gauges, and digital indicators Functions of Weather Station LabVIEW VI • A non-restricted viewing of the meteorological data received • A password protected login for administrator use only Front Panel • Allows you drag and drop pre-built objects to quickly and simply create user interfaces for your application Block Diagram • Allows you specify system functionality by assembling the components of the front panel Sub VI’s Block Diagram Current Status • We have completed the LabVIEW package for the weather station that is being tested at PARI. • Modifications will be made as requested by PARI after testing. Acknowledgements We would like to thank NASA for its support of this work through the MURED PAIR award to SCSU, NCC 5-454, through a subcontract to SCSU from Tennessee State under their NASA URC award, NCCW- 0085, and to the staff at PARI for allowing us to use their facilities.