Abstract
Energy generation and storage is vital to power many sensors used in research and industry. The process by which energy is generated and stored can have critical impacts on the environment. Piezoelectric energy harvesting is one method of renewable energy generation that can have reduced environmental impacts compared to other non-renewable forms of electricity generation. Additionally, it is capable of being portable, which is ideal for powering smart wearables. The respiratory rate monitoring garment is a smart wearable that monitors the breathing rate of the wearer. Piezoelectric energy harvesting was explored as a power source for the respiratory rate monitoring garment by initial theoretical calculations of potential maximum voltage output from the wearer's chest motion during respiration to improve the portability of the design. The constitutive equations in combination with a simple circuit representation of the piezoelectric element in series with the respiratory rate sensor was used to generate equations to calculate the maximum voltage available during normal respiration. The maximum voltage during one minute of simulated respiration was determined to be 3.3 mV, which is much lower than the necessary 6.8 - 7.15 V needed to power the respiratory rate monitoring garment. To make piezoelectric energy harvesting suitable for the respiratory rate monitoring garment, the voltage demands of the microcontroller and LoRa wireless transceiver would have to be significantly lowered, or a new method of data collection would have to be developed. While it was determined that piezoelectric energy harvesting could not provide enough voltage for the existing design of the respiratory rate monitoring garment, it may be suitable for other low voltage sensors or applications.
Original language | English (US) |
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Title of host publication | 28th Design for Manufacturing and the Life Cycle Conference (DFMLC) |
Publisher | American Society of Mechanical Engineers (ASME) |
ISBN (Electronic) | 9780791887332 |
DOIs | |
State | Published - 2023 |
Event | ASME 2023 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC-CIE 2023 - Boston, United States Duration: Aug 20 2023 → Aug 23 2023 |
Publication series
Name | Proceedings of the ASME Design Engineering Technical Conference |
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Volume | 5 |
Conference
Conference | ASME 2023 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC-CIE 2023 |
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Country/Territory | United States |
City | Boston |
Period | 8/20/23 → 8/23/23 |
Bibliographical note
Publisher Copyright:© 2023 American Society of Mechanical Engineers (ASME). All rights reserved.
Keywords
- electricity generation
- piezoelectricity
- respiration rate
- self-powered textile
- smart wearables