The Structure Design of Backpacks for Energy Harvesting

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Parinya Kiatpachai
Arsit Boonyaprapasorn
Wanachart Borisut
Anotahi Suksangpanomrung
Weerapun Duangthongsuk


              This backpack is designed having moving structure and fixed structure (i.e., conventional structure). Bag and load are installed with moving structure, which is motioned in vertical or bearing guideline. It is relation to the movement of users. The spring is used for generating motion of bag load by using Hooke's law and spring properties. It can be stretched and shrunk to change the form and size of spring in vertical. The mechanism of this backpack will lead to generation of motion on bag load when users have activities assigned to walking or running. Fourthermore, it also studied the displacement at the reference position measurement by using a laser displacement sensor. Therefore, this study has an important role in new structure designing of backpacks for energy harvesting. It also applicable to other works for innovative backpack leading to globalized society in the future.


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Kiatpachai ป., Boonyaprapasorn อ., Borisut ว., Suksangpanomrung อ., & Duangthongsuk ว. (2021). The Structure Design of Backpacks for Energy Harvesting. SAU JOURNAL OF SCIENCE & TECHNOLOGY, 7(2), 1–14. Retrieved from
Research Article


Y. Hong, J.X. Li and D.T.P. Fong, “ Effect of prolonged walking with backpack loads on trunk muscle activity and fatigue in children,” Journal of Electromyography and Kinesiology, vol. 18, pp. 990-996, 2008.

J. Feenstraa, J. Granstroma and H. Sodano, “Energy harvesting through a backpack employing a mechanically amplified piezoelectric stack,” Mechanical Systems and Signal Processing, vol. 22, pp. 721-734, 2008.

L. Xie and M. Cai, “Increased energy harvesting and reduced accelerative load for backpacks via frequency tuning,” Mechanical Systemsand Signal Processing, vol. 58-59, pp. 399-415, 2015.

D. Li, T. Li, Q.Li, T. Liu and J. Yi, “A simple model for predicting walking energetics with elastically-suspended backpack,” Journal of Biomechanics, vol. 49, pp. 4150-4153, 2016.

L. Xie, X. Li, S.Cai, L. Huang and J. Li, “Increased energy harvesting from backpack to serve as self-sustainable power source via a tube-like harvester,” Mechanical Systems and Signal Processing, vol. 96, pp. 215-225, 2017.

M. Liu, R. Lin, S. Zhou, Y. Yu, A. Ishida, M. McGrath, B. Kennedy, M Hajj and L Zuo, “Design, simulation and experiment of a novel high efficiency energy harvesting paver,” Applied Energy, vol. 212, pp. 966-975, 2018.

L. C. Rome and A. L. Ruina, “Suspended load ergonomic backpack,” US patent, No. US 7.931,178 B2, pp. 1-29 , 2011.

P. R. Vierthaler, C. S. Lewis and C. R. Vierthaler, “Articulated front accessible backpack,” US patent, No. US 8,887,976 B2, pp. 1-13 , 2018.

G. Daneau, “Combined backpack, cot and tent,” US patent, No. US006062446 A, pp. 1-7, 2000.