Wireless sensor node demonstrating indoor-light energy harvesting and voltage-triggered duty cycling

[摘要] We demonstrate a wireless sensor node (WSN) that operates purely on harvested ambient indoor light energy and regulates its duty cycle via voltage-triggered sensing and transmission. The extremely low-power light found in indoor environments can be considered at first sight as unsuitable for high-power load demands characteristic of radios [1], but by leveraging spectrum-tailored solar cells, trickle charging a high-power energy reservoir, and implementing triggered duty cycling, we show that these power demands can be consistently met. All energy harvesting and storage components are fabricated in our labs.

[发布机构] Advanced Manufacturing for Energy, University of California, Berkeley; CA; 94720, United States^1;Politecnico di Milano, Piazza Leonardo Da Vinci, Italy^2

[效力级别] 能源学

[关键词] Duty-cycling;High power;Indoor environment;Indoor light;Power demands;Storage component;Wireless sensor node;Wireless sensor nodes (WSN)