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Harvesting Energy from the Counterbalancing (Weaving) Movement in Bicycle Riding
Biomedical Engineering, Chonbuk National University, Deokjin-dong Jeonju 664-14, Korea
Healthcare Engineering, Chonbuk National University, Deokjin-dong Jeonju 664-14, Korea
Center for Energy Harvesting Materials and Systems (CEHMS), Virginia Tech, Blacksburg, VA 24061, USA
* Author to whom correspondence should be addressed.
Received: 25 May 2012; in revised form: 12 July 2012 / Accepted: 17 July 2012 / Published: 30 July 2012
Abstract: Bicycles are known to be rich source of kinetic energy, some of which is available for harvesting during speedy and balanced maneuvers by the user. A conventional dynamo attached to the rim can generate a large amount of output power at an expense of extra energy input from the user. However, when applying energy conversion technology to human powered equipments, it is important to minimize the increase in extra muscular activity and to maximize the efficiency of human movements. This study proposes a novel energy harvesting methodology that utilizes lateral oscillation of bicycle frame (weaving) caused by user weight shifting movements in order to increase the pedaling force in uphill riding or during quick speed-up. Based on the 3D motion analysis, we designed and implemented the prototype of an electro-dynamic energy harvester that can be mounted on the bicycle’s handlebar to collect energy from the side-to-side movement. The harvester was found to generate substantial electric output power of 6.6 mW from normal road riding. It was able to generate power even during uphill riding which has never been shown with other approaches. Moreover, harvesting of energy from weaving motion seems to increase the economy of cycling by helping efficient usage of human power.
Keywords: energy harvesting; bicycle weaving; economy of human cycling
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MDPI and ACS Style
Yang, Y.; Yeo, J.; Priya, S. Harvesting Energy from the Counterbalancing (Weaving) Movement in Bicycle Riding. Sensors 2012, 12, 10248-10258.
Yang Y, Yeo J, Priya S. Harvesting Energy from the Counterbalancing (Weaving) Movement in Bicycle Riding. Sensors. 2012; 12(8):10248-10258.
Yang, Yoonseok; Yeo, Jeongjin; Priya, Shashank. 2012. "Harvesting Energy from the Counterbalancing (Weaving) Movement in Bicycle Riding." Sensors 12, no. 8: 10248-10258.