THE GEORGE WASHINGTON UNIVERSITY SCHOOL OF ENGINEERING AND APPLIED SCIENCE DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING

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THE GEORGE WASHINGTON UNIVERSITYSCHOOL OF
ENGINEERING AND APPLIED SCIENCEDEPARTMENT 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

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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

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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

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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.

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HARDWARE MODULE
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HARDWARE BLOCK DIAGRAM
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TEMP/HUMIDITY SENSOR TO LED DISPLAY
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PRESSURE/WIND SPEED SENSOR TO LED DISPLAY
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PARALLEL PORT (PS/2)
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SOFTWARE MODULE
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SOFTWARE BLOCK DIAGRAM
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PHYSICAL LAYOUT
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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

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PROTOTYPE USER MANUAL

• Product Description
• Specification
• How to use the product
• Maintenance Procedure
• Trouble Shooting Procedure

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PROBLEMS

• Not enough current
• Port didnt read correct input
• VB doesnt have command to access port

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POSSIBLE IMPROVEMENT

• Sensitive wind sensor
• Better accuracy for LED Display
• Use LCD