This wearable, belt-like device converts the natural motion of breathing into electrical energy using contact electrification. By employing two oppositely charged surfaces—such as PET and PDMS—and using micropatterned textures for enhanced charge density, it efficiently captures energy during the expansion and contraction of the chest and abdomen. Integrated power management circuitry rectifies and regulates the generated AC power, storing it in a battery or capacitor. In addition to its energy-harvesting capabilities, the device also functions as a self-powered sensor that monitors respiratory frequency and depth.
Description
Its differentiation lies in the innovative combination of efficient energy conversion with real-time physiological monitoring. The system’s strategic switching mechanism, operating either at a preset frequency or synchronized with breathing cycles, optimizes energy transfer and minimizes load resistance. Alternative mechanical configurations, including accordion-like and zig-zag designs, further boost charge generation. This multifaceted approach not only powers wearable electronics sustainably but also offers continuous health monitoring, positioning the technology as a significant advancement in the field of self-sufficient wearable devices.
Applications
- Wearable power supply
- Self-powered respiratory sensor
- Personal health monitoring
- Sustainable energy harvesting
Advantages
- Harvests energy from natural breathing motions to power wearable electronics.
- Integrates dual functionality by simultaneously serving as a self-powered respiratory sensor.
- Enhances energy conversion efficiency through micropatterned surfaces and an optimized switching mechanism.
- Provides a sustainable, non-invasive solution for continuous personal health monitoring.
- Offers versatile design adaptations (e.g., accordion-like or zig-zag configurations) to maximize contact and energy generation.
IP Status
https://patents.google.com/patent/US11622700B2
