Download - Dec0910 Science Center
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Dec0910 Science Center
Phase 3
Hussain Almosa Karen Littlejohn
Joey NirschlHassan Hassan
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For the Science Center, our client is looking for interactive workstations that would demonstrate to the audience how the concepts from the ECpE curriculum at ISU can help solve real world challenges to assure a better and more sustainable future.
Problem Statement
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Any visitors to the Computer, Electrical, and Software Engineering departments.
• Perspective Students• Alumni• Company Representatives• Outreach events
Audience
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Piezoelectric Floor - To demonstrate that we can harness the mechanical energy from unconventional sources, such as people, in the form of electrical energy Sequential Programming - To demonstrate and create more understanding of the concept of programming
Concepts
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Focus: Energy Sustainability
Approach: We will build an interactive floor that utilizes the concept of piezoelectricity to demonstrate to the audience that we can capture mechanical energy from our bodies to generate clean, renewable electrical energy.
Piezoelectric Floor - Design
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System requirements Key Functional Requirements:
◦ The floor shall generate enough current to power a small LED bulb
◦ The floor shall support a weight of up to 250 lb
◦ The floor shall be raised from the room floor
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System requirements Key Non-Functional Requirements:
◦ The floor shall be able to be moved to another room if needed
◦ The displays shall be visually appealing
◦ The floor module shall be quickly understandable and easy to use
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System Block Diagram
Mechanical Stress
Tile Displacement
Piezo Generator Compression/
Decompression
Electrical Power
Display Operation
User
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Approaches - Overview
Floor with Separate Visual Display
• Blocks with Built-In Audio-Visual Display
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Approaches – Evaluation
Floor with Separate Visual Display◦Pros
Suitable for wider audience
Supports different display options
◦Cons Captures less
energy Less interactive Display is
disconnected from floor
• Blocks with Built-In Audio-Visual Display– Pros
• More interactive• Captures more energy• Compact system
– Cons• Not suitable for some
audience segments• Does not support
other display options• Potentially hazardous
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Selected Design - Model
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Selected Design- Illustration
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Sub-Systems Tiles Compression System Subfloor Piezo Generators Audio-Visual Display Electrical Circuitry
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Lexan Polycarbonate Sheets◦ Clear◦ Durable
Vendor: Ridout Plastics
Sub-Systems - Tiles
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Two Alternatives◦ Spring System
Advantage: Could be mounted firmly to subfloor
◦ Foam Blocks Advantage: Smooth
Compression/ Decompression
Sub-Systems – Compression System
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Wooden Subfloor◦Divided into 9 blocks◦Center block will be
covered and will not be compressible
◦Each of 8 block surrounding blocks will be compressible and will house piezo generators, compression system, audio-visual displays, and accompanying circuits
Sub-Systems - Subfloor
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Sub-Systems - Piezo Generators Vendor: Noliac Inc.
Ceramic Multilayer Generators (CMG) are built up with a number of thin ceramic layers sandwiched between internal electrodes, resulting in a low output voltage but high current compared to conventional single layer piezoelectric generators.
Custom ProductWorked with similar team in Denmark to successfully generate 0.13µA by applying hand pressure to 4 piezo generators. CMG size: 5mmx5mmx2mm, 60V.
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Visual◦High Brightness Color LED
Vendor: Kingbright USA 120°viewing angle Luminous Intensity: 1200-1450 Available in blue, green, and red Operating current: 120mA
Audio◦One Central Speaker
Powered separately
◦Pre-Programmed Sound Modules Vendor: Zhen Xiang
Sub-Systems – Audio-Visual Display
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Each of the 8 block will house one generator/ display system, which will require separate circuitry.
Currently communicating with Noliac’s R&D department to determine number, sizes, appropriate circuits, and estimated cost of piezo generators required for our application
Sub-Systems – Electrical Circuitry
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Test Plan Structural Analysis
◦ Test cell structure for ability to support maximum weight
Functional/Performance Testing◦ Test functionality and performance of all 8 piezo
generators and audio-visual displays by placing weights on each cell
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Sequential Programming - Design
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System requirements Key Functional Requirements:
◦ The Programming Module shall allow the user to order a set of commands
◦ The Programming Module shall give feedback on command order upon request
◦ The Programming Module shall allow the only administrator users to configure the volume used by the module
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System requirements Key Non-Functional Requirements:
◦ The Programming Module shall be user friendly ◦ The Programming Module shall be quickly
understandable and easy to use without a demo ◦ The Programming Module shall give the user a taste
of programming
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Main Frame Option Frame Description Frame Program Frame Password Frame
GUI Classes
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Settings Program List Program
Background Classes
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<Program> <Type>1</Type> <ProgramName>Prog1</ProgramName> <Author>Author1</Author> <Author>Author2</Author> <Author>Author3</Author> <Description>Random description
here</Description>
XML File for Program
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<Instruction> <Num>1</Num> <Text>Find treasure map.<Text> <Picture>image1.jpg<Picture> </Instruction> <Instruction> <Num>2</Num> <Text>Search for treasure.<Text> <Picture>image2.jpg<Picture> </Instruction>
XML File for Program Cont.
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<Instruction> <Num>3</Num> <Text>Find treasure.<Text> <Picture>imag3.jpg<Picture> </Instruction> </Program>
XML File for Program Cont.
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<Options> <Pass>hash</Pass> <Font>Arial</Font> <FontSize>14</FontSize> <Timer>True</Timer> <Sound> <Mute>True</Mute> <Volume>5</Volume> </Sound>
<ProgramLoc>Default</ProgramLoc> </Options>
XML File for Settings
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<Start> <ProgramName>Prog1</ProgramName> <ProgramName>Prog2</ProgramName></Start>
XML File for Main Programs
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String getFont(); / void setFont(String font);int getFontSize(); / void setFontSize(int size);boolean getTimer(); /
void setTimer(boolean use);boolean getMute(); / setMute(boolean use);int getVolume(); / void setVolume(int vol);String getLocation(); /
void setLocation(String loc);
Settings.java
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String[] getPrograms();
ProgramList.java
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boolean checkpass(String password);boolean setpass(String password);
Password.java
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Program(String loc);String getDescription();String[] getAuthors();String[] getInstructions();String checkInstruction(String inst, int
position);
Program.java
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Use JUnit 4.0 to create automated unit tests for individual modules
Testing some aspects of the Wiimote will require human interaction
Testing the Options Form will require mouse interaction
Programming Module Test plan
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Main Menu
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Tests Expected Outcome
1. Start program. 1. Opens to Main Menu.
a. No programs loaded. a. Let user know that no programs are available.
b. A couple of programs loaded. b. Scrolling of programs not enabled.
c. Many programs loaded. c. Scrolling of programs is enabled.
2. Options button is clicked. 2. User is prompted for credentials.
a. Credentials entered valid. a. Options Form is opened.
b. Credentials entered incorrectly. b. User is informed and returned to Password dialog.
c. Password dialog cancel button clicked.
c. Password dialog closes. User brought back to Main Menu.
3. A Program is clicked. 3. Proper Program Description box appears and Main Menu disappears.
Programming Module Test plan- Main Menu
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Options Form
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Tests Expected Outcome
1. Main Menu button is clicked. 1a. If any changes are made, user is prompted to save those changes.1b. Return the user to the Main Menu.
2. Save button is clicked. 2a. Save changes to the options XML file.2b. Return the user to the main menu
Programming Module Test plan- Options
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Program Description
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Tests Expected Outcome
1. Main Menu button is clicked. 1. Return the user to the Main Menu.
2. Start button is clicked. 2. Direct the user to the Program form
Programming Module Test plan- Program Description
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Program Screen
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Tests Expected Outcome
1. Main Menu button is clicked. 1. A warning dialog will be displayed.
a. Continue clicked. a. Program will close and Main Menu will appear.
b. Cancel clicked. b. Dialog will be closed.
2. Item dragged from left list to right list.
2. Item will appear in that instruction slot and will disappear from the left side.
3. Item dragged from right to left list. 3. Item will return to original position and will disappear from the right list.
4. Run button clicked. 4. Program will appear to highlight instructions one by one. If an error is found, User will be notified and execution will stop. Else, User will be notified of a successful execution.
5. Description button clicked. 5. A warning dialog will be displayed.
a. Continue clicked. a. Program will close and Main Menu will appear.
b. Cancel clicked. b. Dialog will be closed.
Programming Module Test plan- Program
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Schedule – Spring 09
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Schedule – Fall 09
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Item Cost
9 Tiles (32” X 24” X 48”) $117 (9*13)
Subfloor and compression system $50
8 Piezo generators $480 (8*60)
4 LEDs (5.0X5.0MM RGB CLR SMD) $36 (4*9)
4 Sound Modules $20 (4*5)
Total: $703
Piezoelectric Floor Cost Analysis
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Item Cost
22 inch Monitor $300
Computer and accessories (keyboard & Mouse) $500
Wiimote $40
Wiimote Charger $40
Bluetooth Receiver $100
Table (Provided by the Department) $0
Security tethers $300
Total: $1,280
Programming Module Cost Analysis
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491 492
Team Members:
Plan Design Implementation
Test Personal Hours
Personal Costs
Hussain Almosa
35 50 65 65 215 $2,580
Hassan Hassan
35 50 65 65 215 $2,580
Karen Littlejohn
35 50 65 65 215 $2,580
Joey Nirschl
35 50 65 65 215 $2,580
Total: 140 200 260 260 860 $10,320
Rate = $12/hour
Human Factor Cost Analysis
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Questions?
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http://www.youtube.com/watch?v=FzQwj2e3rLw&feature=related
Floor Video