Capttery: Scalable Battery-like Room-level Wireless Power

摘要: Internet-of-things (IoT) devices are becoming widely adopted, but they increasingly suffer from limited power, as power cords cannot reach the billions and batteries do not last forever. Existing systems address issue with ultra-low-power designs energy scavenging, which inevitably limit functionality. To unlock full potential of ubiquitous computing connectivity, our solution uses capacitive transfer (CPT) to provide battery-like wireless delivery, henceforth referred "Capttery". Capttery presents first room-level (~5 m) CPT system, delivers continuous milliwatt-level multiple IoT concurrently. Unlike conventional one-to-one that target kilowatt in a controlled potentially hazardous setup, is designed be human-safe invariant practical dynamic environment. Our evaluation shows can end-to-end applications across typical room, where new receivers easily added plug-and-play manner.