Assistive technology for harvesting footstep energy in IoT enabled Smart shoe for the visually impaired

Ramalingam, Mritha; Chinnavan, Elanchezhian; Puviarasi, R.; Yu, Ng Hui

doi:10.1109/icsecs52883.2021.00028

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…In [14], a practical application of a piezoelectric shoe-based RFID device was demonstrated using various piezoelectric materials, such as polyvinylidene fluoride, and piezoelectric unimorph devices. In [15][16][17], the use of piezoelectric elements was demonstrated for energy harvesting to power GPS devices, IoT devices, or smartphones. The energy-harvesting performances under different conditions, such as walking, jogging, and running, with two rectifier configurations were investigated in [18], and the power generated at different parts of a shoe was investigated in [19].…”

Section: Introductionmentioning

confidence: 99%

Batteryless BLE Module with a Piezoelectric Element Mounted on a Shoe Sole

Dan,

Yano,

Wang

2024

Sensors

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A position identification system for wandering elderly people uses BLE to transmit ID information. The objective of this study is to make the BLE module batteryless using a piezoelectric element. The piezoelectric element is mounted on the sole of a shoe, and when pressure is applied to the piezoelectric element by walking, a voltage is generated between both electrodes of the piezoelectric element. This voltage is used to store the necessary power as a battery to operate the BLE module. In this paper, we provide a step-by-step design approach using piezoelectric elements attached to a shoe to power an actual BLE module. We derive an equivalent circuit for the piezoelectric element under walking conditions and, through circuit simulation and actual measurements, clarify the amount of time required to charge the voltage to drive the BLE, demonstrating the possibility of a batteryless BLE module for use in locating a wanderer while they are walking.

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Section: Introductionmentioning

confidence: 99%

Batteryless BLE Module with a Piezoelectric Element Mounted on a Shoe Sole

Dan,

Yano,

Wang

2024

Sensors

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A wearable textile-based pneumatic energy harvesting system for assistive robotics

et al. 2022

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Wearable assistive, rehabilitative, and augmentative devices currently require bulky power supplies, often making these tools more of a burden than an asset. This work introduces a soft, low-profile, textile-based pneumatic energy harvesting system that extracts power directly from the foot strike of a user during walking. Energy is harvested with a textile pump integrated into the insole of the user’s shoe and stored in a wearable textile bladder to operate pneumatic actuators on demand, with system performance optimized based on a mechano-fluidic model. The system recovered a maximum average power of nearly 3 W with over 20% conversion efficiency—outperforming electromagnetic, piezoelectric, and triboelectric alternatives—and was used to power a wearable arm-lift device that assists shoulder motion and a supernumerary robotic arm, demonstrating its capability as a lightweight, low-cost, and comfortable solution to support adults with upper body functional limitations in activities of daily living.

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State-of-the-Art Review on Wearable Obstacle Detection Systems Developed for Assistive Technologies and Footwear

Joseph

kian

Begg

2023

Sensors

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Walking independently is essential to maintaining our quality of life but safe locomotion depends on perceiving hazards in the everyday environment. To address this problem, there is an increasing focus on developing assistive technologies that can alert the user to the risk destabilizing foot contact with either the ground or obstacles, leading to a fall. Shoe-mounted sensor systems designed to monitor foot-obstacle interaction are being employed to identify tripping risk and provide corrective feedback. Advances in smart wearable technologies, integrating motion sensors with machine learning algorithms, has led to developments in shoe-mounted obstacle detection. The focus of this review is gait-assisting wearable sensors and hazard detection for pedestrians. This literature represents a research front that is critically important in paving the way towards practical, low-cost, wearable devices that can make walking safer and reduce the increasing financial and human costs of fall injuries.

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Assistive technology for harvesting footstep energy in IoT enabled Smart shoe for the visually impaired

Cited by 3 publications

References 10 publications

Batteryless BLE Module with a Piezoelectric Element Mounted on a Shoe Sole

Batteryless BLE Module with a Piezoelectric Element Mounted on a Shoe Sole

A wearable textile-based pneumatic energy harvesting system for assistive robotics

State-of-the-Art Review on Wearable Obstacle Detection Systems Developed for Assistive Technologies and Footwear

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