Thomas Radziewicz Ryan Wilson Mike Itenburg Overview Purpose of project Applications Functional Process Component Selection USB 20 Standard Alternative Designs Final Design Output Purpose of Project ID: 599117
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Slide1
Piezoelectric Energy Harnessing
Thomas Radziewicz
Ryan Wilson
Mike
ItenburgSlide2
Overview
Purpose of project
Applications
Functional Process
Component Selection
USB 2.0 Standard
Alternative Designs
Final Design
OutputSlide3
Purpose of Project
Energy is very important
in today’s world
Need for renewable energy
Energy when not connected to grid
Piezoelectric mounted in shoes to solve problem
Ease of design
Useful for variety of applicationsSlide4
Applications
People in remote locations, no access to grid
Military personnel
Rescue personnel
Extreme hikers
People exercising
Mobile medical personnel
Body sensors
Personal navigationSlide5
Functional ProcessSlide6
The Components
Step Down Transformer and Full Bridge Rectifier
Pre-Regulation Filtering
Integrated Circuit to Produce Standard USB 2.0 Power.Slide7
USB 2.0 Standard
From Source:
www.usb.org
Voltage 5.0V (maximum deviation of 0.1V)
Current (max) of 500mA (with a response of 10us)Slide8
Alternative Design
Originally planned to directly power a device over the USB protocol but was not feasible.
Research shows that
piezoelectrics
stimulated by walking did not generate enough constant electricity to power a device.
Changed to current design in order to capture harvested energy in useful manner.Slide9
Final Design
Our ultimate design included a multilayered
piezo
material which would generate power on the scale necessary for this project.
The circuitry would involve a rectifying bridge to condition the voltage coming from the
piezo
material.
The Li-ion battery would then accept the regulated electricity and charge.Slide10
Final Design (cont.)Slide11
Output
Li-ion batteries would work well as our charge collector.
By accepting 5V and up to 1 amp, this battery matches our piezoelectric output specs.
A 300mAh battery is a good compromise because it will charge up relatively quickly and provide emergency power to a USB device.