Footstep energy harvesting using heel strike-induced airflow for human activity sensing

Fu, Hailing; Cao, Kun; Xu, Renjie; Bhouri, Mohamed Aziz; Martinez-Botas, Ricardo; Kim, Sung Hoon; Yeatman, Eric M.

doi:10.1109/bsn.2016.7516245

Cited by 19 publications

(16 citation statements)

References 16 publications

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“…They are thus easier to be integrated into shoes without interfering with the gait. A variety of energy harvesters have been proposed and embedded in shoes using either the electromagnetic effect [179][180][181] or the piezoelectric effect. Here we mainly analyze energy harvesters in shoes using the piezoelectric effect.…”

Section: Shoesmentioning

confidence: 99%

High-Performance Piezoelectric Energy Harvesters and Their Applications

Yang

Zhou

et al. 2018

Joule

920

415

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Energy harvesting holds great potential to achieve long-lifespan self-powered operations of wireless sensor networks, wearable devices, and medical implants, and thus has attracted substantial interest from both academia and industry. This paper presents a comprehensive review of piezoelectric energyharvesting techniques developed in the last decade. The piezoelectric effect has been widely adopted to convert mechanical energy to electricity, due to its high energy conversion efficiency, ease of implementation, and miniaturization. From the viewpoint of applications, we are most concerned about whether an energy harvester can generate sufficient power under a variable excitation. Therefore, here we concentrate on methodologies leading to high power output and broad operational bandwidth. Different designs, nonlinear methods, optimization techniques, and harvesting materials are reviewed and discussed in depth. Furthermore, we identify four promising applications: shoes, pacemakers, tire pressure monitoring systems, and bridge and building monitoring. We review new high-performance energy harvesters proposed for each application.

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Section: Shoesmentioning

confidence: 99%

High-Performance Piezoelectric Energy Harvesters and Their Applications

Yang

Zhou

et al. 2018

Joule

920

415

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“…Disadvantages PaveGen [13] • Eco friendly • Uses recycled material in construction (rubber) • Commercially available • Good power output (5W from continuous footstep)…”

Section: Advantagesmentioning

confidence: 99%

Pressure Simulation for Footstep Energy Harvesting Paver

Chand

Prasad

Singh

et al. 2019

2019 IEEE International Conference on Sensors and Nanotechnology

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Amongst all the energy sources from human motion, footstep has the potential of producing electrical energy as an alternative source to non-conventional renewable energy. Researchers have shown that human footstep kinetic energy can be converted to electrical energy by devised mechanism for low power application such as powering lights, radio and charging phones. Eventually, a novel fluid based energy harvesting paver was developed and tested to contribute towards sustainable development. The paver uses mini hydro generators to produce energy as fluid is forced through these mini hydro generators upon human stepping. This paper presents the pressure simulation of fluid bag system when subjected to an applied human force and the quarter ellipsoid shaped proved to be the best performer which can produce upto 1.4J per step. The pressure simulation provides a relation between pressure and output power. Keywords-footstep, fluid bag, fluid based energy harvester, non-conventional renewable energy and pressure

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“…The cylinder consists of a magneto inductive transducer embedded in an electronic interface. Fu et al (2016) used an air bladder-turbine to collect the airflow caused by the heel impact and convert it into electrical energy. It was verified by experiments that the airflow energy harvester worked stably and reliably.…”

Section: Introductionmentioning

confidence: 99%

Force Analysis and Energy Harvesting for Innovative Multi-functional Shoes

Yang

2019

Front. Mater.

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The research of wearable energy harvesting and storage devices has attracted tremendous attention from researchers with commercial wearable devices emerging in the life as new mainstream. Among them, shoes are a better choice for energy harvesting. However, most of the existing energy harvesting and storage shoes have complex structures, poor wearing comfort, and high cost. In order to solve these problems, a kind of innovative multi-functional shoes is developed and discussed in this paper. The shoe contain two main parts. One is a rubber column used as heel material, which plays a role in cushioning and damping during movement and making the shoe more comfortable to wear. The other one is a circuit system designed to realize energy harvesting, energy storage, and emergency charging of electronic products during walking. The performance test of the rubber column is carried out, and then the structure and geometric size of the rubber column is optimized according to its performance, human weight, and gait. Finally, the stress and energy harvesting of the multi-functional shoes in different gait conditions are analyzed. The analysis results show that the developed innovative multi-functional shoe has good stability and versatility when working under different gait, and the rubber column is beneficial to improve the wearing comfort of energy harvesting shoes.

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Footstep energy harvesting using heel strike-induced airflow for human activity sensing

Cited by 19 publications

References 16 publications

High-Performance Piezoelectric Energy Harvesters and Their Applications

High-Performance Piezoelectric Energy Harvesters and Their Applications

Pressure Simulation for Footstep Energy Harvesting Paver

Force Analysis and Energy Harvesting for Innovative Multi-functional Shoes

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