http://weather.union.edu Goals Structure Sensors Communication Server Senior Project – Computer Engineering – 2008 Union College Weather Station Gregory Mahlum Advisor – Dean Traver Structure • Location: Roof of North Wing Science & Engineering building Goals • Design and implement a weather station for the Union College community • Display current and archived measurement data on a webpage Sensors Temperature Relative humidity Barometric pressure Precipitation Ultra-violet Wind speed Wind direction Calculated wind chill, dew point, and heat index based on the above sensor measurements Communication • Serial Communication via Ethernet using a Moxa serial device server • Communication occurs continuously. Data arrives every 9-10 sec. • New data is retrieved as quickly as it takes the microcontroller to read the sensors and communicate with the server. Server • Collection Script runs communication program • Compression Script calculates averages, highs, lows, and totals • Database contains two tables, a past hour table for collection script data and an archived data table for compression script data • Web server uses data in the database to generate web pages Server Activity Diagram http://weather.union.edu