Details
| Original language | English |
|---|---|
| Title of host publication | Active and Passive Smart Structures and Integrated Systems 2012 |
| Publication status | Published - 26 Apr 2012 |
| Event | Active and Passive Smart Structures and Integrated Systems 2012 - San Diego, CA, United States Duration: 12 Mar 2012 → 15 Mar 2012 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 8341 |
| ISSN (Print) | 0277-786X |
Abstract
With the continued advancement in electronics the power requirement for micro-sensors has been decreasing opening the possibility for incorporating on-board energy harvesting devices to create self-powered sensors. The requirement for the energy harvesters are small size, light weight and the possibility of a low-budget mass production. In this study, we focus on developing an energy harvester for powering a pulse rate sensor. We propose to integrate an inductive energy harvester within a commonly available pen to harvest vibration energy from normal human motions like jogging and jumping. An existing prototype was reviewed which consists of a magnet wedged between two mechanical springs housed within a cylindrical shell. A single copper coil surrounds the cylindrical shell which harvests energy through Faraday's effect during magnet oscillation. This study reports a design change to the previous prototype providing a significant reduction in the device foot print without causing major losses in power generation. By breaking the single coil in the previous prototype into three separate coils an increase in power density was achieved. Several pulse rate sensors were evaluated to determine a target power requirement of 0.3 mW. To evaluate the prototype as a potential solution, the harvester was excited at various frequencies and accelerations typically produced through jogging and jumping motion. The improved prototype generated 0.043 mW at 0.56 g rms and 3 Hz; and 0.13 mW at 1.14 g rms at 5 Hz. The design change allowed reduction in total volume from 8.59 cm 3 to 1.31 cm 3 without significant losses in power generation.
Keywords
- Energy harvesting, Human motion, Inductive, Magnetic levitation, Medical sensor, Vibration, Wireless power
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
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Active and Passive Smart Structures and Integrated Systems 2012. 2012. 83411D (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8341).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Improved pen harvester for powering a pulse rate sensor
AU - Marin, Anthony
AU - Heitzmann, Patrick
AU - Twiefel, Jens
AU - Priya, Shashank
PY - 2012/4/26
Y1 - 2012/4/26
N2 - With the continued advancement in electronics the power requirement for micro-sensors has been decreasing opening the possibility for incorporating on-board energy harvesting devices to create self-powered sensors. The requirement for the energy harvesters are small size, light weight and the possibility of a low-budget mass production. In this study, we focus on developing an energy harvester for powering a pulse rate sensor. We propose to integrate an inductive energy harvester within a commonly available pen to harvest vibration energy from normal human motions like jogging and jumping. An existing prototype was reviewed which consists of a magnet wedged between two mechanical springs housed within a cylindrical shell. A single copper coil surrounds the cylindrical shell which harvests energy through Faraday's effect during magnet oscillation. This study reports a design change to the previous prototype providing a significant reduction in the device foot print without causing major losses in power generation. By breaking the single coil in the previous prototype into three separate coils an increase in power density was achieved. Several pulse rate sensors were evaluated to determine a target power requirement of 0.3 mW. To evaluate the prototype as a potential solution, the harvester was excited at various frequencies and accelerations typically produced through jogging and jumping motion. The improved prototype generated 0.043 mW at 0.56 g rms and 3 Hz; and 0.13 mW at 1.14 g rms at 5 Hz. The design change allowed reduction in total volume from 8.59 cm 3 to 1.31 cm 3 without significant losses in power generation.
AB - With the continued advancement in electronics the power requirement for micro-sensors has been decreasing opening the possibility for incorporating on-board energy harvesting devices to create self-powered sensors. The requirement for the energy harvesters are small size, light weight and the possibility of a low-budget mass production. In this study, we focus on developing an energy harvester for powering a pulse rate sensor. We propose to integrate an inductive energy harvester within a commonly available pen to harvest vibration energy from normal human motions like jogging and jumping. An existing prototype was reviewed which consists of a magnet wedged between two mechanical springs housed within a cylindrical shell. A single copper coil surrounds the cylindrical shell which harvests energy through Faraday's effect during magnet oscillation. This study reports a design change to the previous prototype providing a significant reduction in the device foot print without causing major losses in power generation. By breaking the single coil in the previous prototype into three separate coils an increase in power density was achieved. Several pulse rate sensors were evaluated to determine a target power requirement of 0.3 mW. To evaluate the prototype as a potential solution, the harvester was excited at various frequencies and accelerations typically produced through jogging and jumping motion. The improved prototype generated 0.043 mW at 0.56 g rms and 3 Hz; and 0.13 mW at 1.14 g rms at 5 Hz. The design change allowed reduction in total volume from 8.59 cm 3 to 1.31 cm 3 without significant losses in power generation.
KW - Energy harvesting
KW - Human motion
KW - Inductive
KW - Magnetic levitation
KW - Medical sensor
KW - Vibration
KW - Wireless power
UR - http://www.scopus.com/inward/record.url?scp=84861503423&partnerID=8YFLogxK
U2 - 10.1117/12.917013
DO - 10.1117/12.917013
M3 - Conference contribution
AN - SCOPUS:84861503423
SN - 9780819489982
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Active and Passive Smart Structures and Integrated Systems 2012
T2 - Active and Passive Smart Structures and Integrated Systems 2012
Y2 - 12 March 2012 through 15 March 2012
ER -