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

16th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Cowell, M.A.^1 ; Lechene, B.P.^1 ; Raffone, P.^2 ; Evans, J.W.^1 ; Arias, A.C.^1 ; Wright, P.K.^1

Advanced Manufacturing for Energy, University of California, Berkeley

CA

94720, United States^1

Politecnico di Milano, Piazza Leonardo Da Vinci, Italy^2

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

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/773/1/012033/pdf
DOI  :  10.1088/1742-6596/773/1/012033

来源: IOP

【 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.