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

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

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

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.

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

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.

Selection Matrix

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.

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

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 10-14.4V 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

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 20-120 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 -500-60000 feet The product shall be able to be stored without operation for 10 years

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

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

Block Signal Table: Power

Block Signal Table: Digital

Block Signal Table: Analog

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.

Applicable Patents Name: Portable Fish Finder Patent Number: 6791902 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: 5465622 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: 5065371 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.