Initial Prototype Presentation
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Transcript Initial Prototype Presentation
Eelectric
Energy Harvesting
Through Piezoelectric Polymers
Initial Prototype Presentation
Don Jenket, II
Kathy Li
Peter Stone
Presentation Overview
Design Schematics
Materials & Processing Justification
Circuitry
Tail
Wire/Electrodes
Initial Prototype Unveiling
Improvements for Final Design
Revised Timeline
April 13, 2004
Eelectric
Initial Prototype
Design Schematic
Fan
Rectifier
Electronics Housing
April 13, 2004
Eelectric
Initial Prototype
Circuitry Schematic
Diodes
LED
AC
Capacitors
April 13, 2004
Eelectric
Initial Prototype
Materials & Processing
Justifications
Circuitry – Germanium diodes
Require less voltage to bias (0.2V)
Fewest diodes used as possible
Fewer voltage drops
Less power consumed by the circuit
Storage Device
Capacitors used to store energy
April 13, 2004
Eelectric
Initial Prototype
“Eel Tail” Schematic
12 cm
Tail End
Head End
Top View
2 cm
Cu Wire
Titanium
Electrode
Cu Wire
Silver paste
Titanium Electrodes
12 cm
2 cm
Side View
April 13, 2004
0.04 mm
Front View
Eelectric
Initial Prototype
Materials & Processing
Justifications
Tail, Material – PVDF
April 13, 2004
Eelectric
Initial Prototype
Materials & Processing
Justifications
Tail, Aspect Ratio – 2 cm x 12 cm
April 13, 2004
Eelectric
Initial Prototype
Materials & Processing
Justifications
Electrodes – Titanium & Silver Paste
Gold desired in place of Titanium
Easier processing
Better properties in air
Wires – 5 mil insulated magnet wire
Flexible
Coiled, Wound, Twisted – noise reduction
Can come in contact with other conductors (i.e.
flagpole)
April 13, 2004
Eelectric
Initial Prototype
Oscilloscope Data
2cm x 12cm Piezoelectric PVDF in Wind
April 13, 2004
Eelectric
Initial Prototype
Circuitry Schematic
Diodes
LED
AC
Capacitors
April 13, 2004
Eelectric
Initial Prototype
Current Progress
Working piezoelectric AC Source
AC Voltage ~700 mV peak-to-peak
Working rectifying circuit
Takes >2000 mV AC peak-to-peak to light
an LED
What needs to be done?
Increase Voltage Output from PVDF Tail
Connecting multiple tails in series
Integrate the two working components
April 13, 2004
Eelectric
Initial Prototype
Improvements on
Final Design
Layering
Two layers
Increases possible output
Decreases flexibility
Difficult to adhere together
Adhesive reinforcement
Silver Paste alone cannot hold layers together
or wires down
Kapton and Mylar Tape
2-5 mil thickness should not drastically alter flexibility
April 13, 2004
Eelectric
Initial Prototype
Improvements on
Final Design
Electrode & Wiring Modifications
12 cm
Silver Electrode
Cu Wire
PVDF
2 cm
Gold Electrode
Allows
for bending freedom
Strain relief of wire
Run wire straight to flagpole
April 13, 2004
Eelectric
Initial Prototype
Revised Timeline
2/10
2/17
2/24
3/2
3/9
3/16
3/23
4/6
4/13
4/20
4/27
5/4
Electroded piezoelectronic sample
Obtain PVDF
Investigate electrode technology
Attach electrodes to PVDF
Preliminary measurements
Build Prototype
Electronic Circuitry
Test Prototype
Air testing
Output measurement
Optimizing Prototype
Incorporating future revisions
Build prototype II
Test protoype II
Prepare Demo
Final Presentation
April 13, 2004
Eelectric
Initial Prototype
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