1. THE GEORGE WASHINGTON UNIVERSITY SCHOOL OF ENGINEERING AND APPLIED SCIENCE DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING FINAL PRESENTATION WEATHER STATION BY XXXXXXXXXXXX EE XXX -11 SENIOR ELECTRICAL ENGINEERING DESIGN PROJECT LABORATORY Prepared for Professor XXXXXXX April 28th, 2000

2. PROJECT SPECIFICATIONS (Hardware)  4 Sensors  Temperature Sensor :  LM 335 Precision sensor (0  C - 60  C) + 3  C  Barometric Pressure Sensor  Motorola MPX4100A Pressure Sensor (24-32 inHg) + 1inHg  Humidity Sensor  Radio Shack M3C5 humidity sensor(0% - 100%) + 5%  Wind Speed Sensor  Can motor(dc motor) as a sensor (0 - 80 mph) + 5mph

3. SPECIFICATION (CONT) (Hardware)  Operate from a 110 Vrms power supply  Display:  LED Display for 4 sensors  Computer Display  Hardware device connected to PC using Parallel Port

4. SPECIFICATION (CONT) (Software)  Created using Visual Basic 5  Read the input data from parallel port and store it in computer memory  Display real-time data  Display maximum minimum weather data  User can set an alarm for every weather data  Alarm will turn off if set alarm equal to displayed data.

5. HARDWARE MODULE

6. HARDWARE BLOCK DIAGRAM

7. TEMP/HUMIDITY SENSOR TO LED DISPLAY

8. PRESSURE/WIND SPEED SENSOR TO LED DISPLAY

9. PARALLEL PORT (PS/2)

10. SOFTWARE MODULE

11. SOFTWARE BLOCK DIAGRAM

12. PHYSICAL LAYOUT

13. TEST MANUAL Power: The Voltage supply = 5 V. Sensors: Check the input voltage to ADC Check LED Display Multiplexer: 32 input from sensors / output 8 bit Interface to Parallel Port: Check the input value = ADC value The complete unit LED Display = commercial measuring device Computer Display = LED Display alarm & hi/lo

14. PROTOTYPE USER MANUAL Product Description Specification How to use the product Maintenance Procedure Trouble Shooting Procedure

15. PROBLEMS Not enough current Port didn’t read correct input VB doesn’t have command to access port

16. POSSIBLE IMPROVEMENT Sensitive wind sensor Better accuracy for LED Display Use LCD