Design, modeling and testing of a one-way energy harvesting backpack

Jia Mi, Lin Xu, Ziheng Zhu, Mingyi Liu, Lei Zuo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Scopus citations

Abstract

During trips and outdoor adventures, there are a lot of electric equipment and thus power supply for those devices is critical. At the same time, the burden on shoulders from heavy baggage is substantial. This paper presents a one-way energy harvesting backpack with ball-screw mechanism to generate electricity with high efficiency and reliability, while relieves the burden on shoulders. The one-way energy harvesting method only harvests negative work from human body and potentially reduce metabolic cost while carrying backpack. Simulations show that 4.5W of electrical energy can be obtained from human walking. Bench test results indicate this system can obtain an average power of 7.3 W with excitation of 2Hz and 25mm direct drive. Treadmill test to verify the performance of burden relieve on shoulders indicates this one-way design combing with elastic support strap can reduce the force on shoulders, which reduce fatigue in human.

Original languageEnglish
Title of host publicationActive and Passive Smart Structures and Integrated Systems XII
EditorsJae-Hung Han, Alper Erturk
PublisherSPIE
ISBN (Electronic)9781510616868
DOIs
StatePublished - 2018
Externally publishedYes
EventActive and Passive Smart Structures and Integrated Systems XII 2018 - Denver, United States
Duration: 5 Mar 20188 Mar 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10595
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceActive and Passive Smart Structures and Integrated Systems XII 2018
Country/TerritoryUnited States
CityDenver
Period5/03/188/03/18

Keywords

  • Energy harvesting backpack
  • fatigue
  • human motion
  • one-way clutch
  • vibration

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