1. Team #3: Group Members Adam Davis Tony Johnson Peter Meyer Isaac Krull
Joe Reisinger
Expertise: Digital: PLD/FPGA VHDL
Experience: Engineer Rockwell
Expertise: Microprocessors
Experience: Engineer Bucyrus
Expertise: Management Skills
Experience: Soldering, Hands-On
Expertise: Calibration, C++ Programming
Experience: Engineering Johnson Controls
Expertise: PDP, Reliability
Experience: Systems Baxter Health Care

2. Team Resources 32 Man-hours/Wk
$100 for key part availability for material and prototyping
Team Members Expertise
No Industrial Support from Industry

3. Project 1 Blind-Aid Power supply Transmitter User Interface Receiver
Output
This project will transmit a warning message that will be received wirelessly
by a person. This message could contain various messages in order to warn
A person of their surroundings

4. Project 2 Fish Maze Power supply Servos User Interface Camera
Food Dispenser
This project will track the path of a fish through a maze that is being
Changed by the user. When the fish completes the maze it will receive
A food pellet and than be tested to see if it can repeat its path.

5. Project 3 Depth Finder Power supply Microprocessor User Interface
Transmitter
Receiver
This project will find depth of a body of water through the use of active sonar.
It will than display the depth on a seven segment displays

6. Project 4 Sidewalk Heater
Power supply
Microprocessor
User Interface
Temperature Sensor
Heat Output
This project will collect solar power and convert it into heat energy in order to
keep sidewalks clear of ice.

7. Selection Matrix

8. Depth Finder
This product uses a power supply, receiver, transmitter, microprocessor and user interface.
This application specific design will relieve the end user of difficult and hard to understand interfaces while still maintaining reliability for marine applications
This system will use a 12VDC power supply designed for marine use.
This is a relatively simply design with 5 separate blocks. It utilizes our strengths as a team while still delivering key concepts learned in our academic career.

9. Performance Requirements
Functions and Capabilities
Product must be accurate to depths of +/- 5 percent of actual depth
Product must be able to measure depths up to 20 feet
Product must read depth every 1 second
Must be able to sense under the transducer within a 15 degree cone
Must be able to work both with marine batteries and with D cell batteries
Product must be able to differentiate small object from bottom of lake

10. Performance Requirements
Modes of Operation
The Product shall be able to turn on and off
Power Inputs
The battery must be able to last for 5 hours on full operation without recharge
The product must be able to operate on a standard 12 V marine battery
Electrical Functions
The product must be able to operate within a voltage range of V
Operator I/F Inputs
The On/Off switch must be a momentary pushbutton switch
Mechanical Interfaces
The product must be able to mount onto an L bracket

11. Standard Requirements
Market & Business Case
The product must cost less than $100/unit
Environment & Safety
The product shall be able to operate in temperatures above 32 degrees Fahrenheit
The product shall be able to operate in 0-90% non-condensing humidity
The product shall be able to operate in altitude ranges from sea level to 8000 feet
The product shall be able to be stored in temperature ranging from degrees Fahrenheit
The product shall be able to be stored in 0-90% non-condensing humidity
The product shall be able to be stored in altitudes ranging from feet
The product shall be able to be stored without operation for 10 years

12. Refined Block Diagram Key Power Analog Signal Ping Signal
Push Button #1
Push Button #2
LED Display
Blacklight
Ultrasonic
Transmitter
9 V
Power Source
10 – 14.4 V
Ultrasonic
Receiver
5, 9 V IC
User Interface
(Output)
5-10 V

13. Refined Block Diagram Description Table
Block Name
Owner
Brief Description
Of Block Function
Power
Interfaces
Digital
Analog 1
Power Supply
Joe Reisinger
Converts 12VDC to 5VDC and 9VDC with minimal ripple
In: 12VDC
Out: 5VDC,
9VDC
None
Out: Vbat 2
CPU & Clock
Adam Davis
CPU design using CPLD
Clock determined by required time delay
In: 5VDC
Out: Display
In: Push Buttons
In: Input from Transducer circuit 3
User Interface
Tony Johnson
Allows the user to interface with the device, including display of depth and push buttons for options
In: 5VDC
In: Display
Out: Push Buttons 4
Transmitter
Peter Meyer
Transmits a signal into the water for reflection detection for the receiver
In: 5VDC, 9VDC
Out: Signal
In: Signal from CPLD 5
Receiver
Isaac Krull
Receives signals from the water and sends the corresponding signals to the CPLD
Out: Signal to CPLD

14. Block Signal Table: Power

15. Block Signal Table: Digital

16. Block Signal Table: Analog

17. Ethical/Societal Issues
Our depth finder is at risk of electrical faults and possible electrocution if proper procedures to eliminate these risks are not taken. Our unit will need to be enclosed in a waterproof enclosure. Proper safety grounds must also be implemented. These actions will greatly reduce the risk of possible electrical faults or electrocution.
The engineering of our sonar transmitter and receiver is the most critical part of our product. If this isn’t functioning 100% correct, the product will be useless. To ensure this area of engineering is 100% correct numerous extensive tests will be performed on the transmitter and receiver components.

18. Applicable Patents
Name: Portable Fish Finder Patent Number: Date: September 14, 2004
This patent could be designed around if we intended our unit to be permanently used on a boat and not portable. A different mounting device other than a suction cup could be used to mount the transducer to the boat.
Name: Method for determining depth values of a body of water Patent Number: Date: November 14, 1995
This patent could be designed around by omitting the velocity sensor used and assume the velocity of the sound signal to be relatively constant. For averages lakes, the velocity will not vary greatly with the change in depth. The depth our depth finder is designed for won’t be affected by changing velocity due to depth.
Name: Depth Finder having variable measurement capabilities Patent Number: Date: November 11, 1991
This patent could be designed around by utilizing a different display than a liquid crystal display. A typical CRT display or LED display could be used instead. Also, our depth finder would be designed for use in fresh water only.