Body-based capacitive coupling and conductive channel power transfer for wearable and implant electronics

Wearable and implant electronic devices have been widely utilized for healthcare and medicine. However, powering these devices for long duration with stable performance is extremely challenging. Here, we propose a body-based capacitive coupling and conductive channel power transfer ((BCPT)-P-4) technology for this application. The BC4PT could unintentionally harvest the 50/60 Hz electricity using daily electronic devices. Large stray capacitances exist between electronic device such as phones and hand. When a person uses a plugged-in device, a high amount of 50/60 Hz electricity could be coupled to the hand, and transferred to wearable devices via the body conductive channel. The (BCPT)-P-4 could light up a 120 LEDs array directly, charge a 1mF capacitor to similar to 23 V in 10 min. The harvested energy is utilized to power a wireless multivariable physiological sensor chip continuously or an implant device via the resonance-coupled wireless power transmission. The technology has a great application prospect for the self-powered wireless wearable and implant systems.

Automated summary

In this article, a body-based capacitive coupling and conductive channel power transfer (BCPT)-P-4 technology is proposed for powering wearable and implant electronic devices. This technology can harvest 50/60 Hz electricity unintentionally from daily electronic devices and transfer it to wearable devices via the body conductive channel. It has the potential to power wireless wearable and implant systems.