1. Capstone Design ProjectEE
Capstone Design Project
Spring 2005
Team #3: RF Weather Buoy
Nole Martin
Paul Simons
Eric Ritzke
Tom Reuter
Steven Krol
Murtadha Tunis 1

2. RF Weather Buoy Features Wind speed Wind direction Barometer
Safety lights
GPS
Solar power
Humidity sensor
Water quality analyzer
Cost effective
Essential weather info

3. Block Diagram Eric – Green Paul - Yellow
Solar
Recharging
Battery
Pressure
Sensor 4 6 5 1
Microprocessor 2 3 10
LED w/ Controls 7 9 8 11
Outdoor Unit (Buoy)
Indoor Unit (Display)
Eric – Green Paul - Yellow
Murtadha – Orange Steve – Light Blue
Nole – Red Tom – Dark Blue
Data Lines
Wireless Link
Power Lines

4. System Level Requirements
System Performance Requirements:
Max Display Viewing Distance 3m
Max Buoy Lighting Perception Distance
1,000m
Number of Numeric Displays 10
Number of Lines of Displays 4
Buoy Functional Modes
Active, Sleep
Display Functional Modes
Active
Min SNR
35dB
Max Noise
5nV/rtHz
Min Transmission Distance
100m
Max Buoy Power Current 1A

5. System Level Requirements
System Standard Requirements:
Mechanical:
Max. Product Vol.
1,000,000 cm^3
Max. Shipping Container Vol.
1,100,000
1,000,000
Max. Shipping Container Vol. Max. Product Mass
40kg
Max. # of PCB’s 4
Max. Total PCB Area
500 cm^2
Max. Shock Force
12.0 G’s
Max. Shock Repetitions 6
Environmental:
Operating Ambient Temp. Range
-5°C to 70°C
Operating Ambient Humidity Range
-1000m to 20000m
0%Rh to 100%Rh
Operating Altitude Range
Storage Ambient Temp. Range
-20°C to 80°C
Storage Ambient Humidity Range
0%RH to 100%RH
Storage / Shipping Altitude Range
-1500m to 30000m

6. System Level Requirements
System Standard Requirements:
Manufacturing:
Min. Total Parts Count
150
Max. Unique Parts Count 65
Max. Parts & Materials Cost
$300
Max. MFG Assembly / Test Cost
$50
Life Cycle:
Est. Max. Production Lifetime
5 years
Product Life Reliability in MTBF
Full Warranty Period
1 years
Market:
Est. Total Market Size
$700,000
Est. Annual Vol.
1,000
Min. List Price
$700
Max. Product Materials Cost
$300
Max. Product MFG Cost
$50
Power:
Buoy Power
8V to 18V
Solar Panel
AC/DC Adapter
3.3V to 8.7V
Max. Total Power
50W