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中文摘要：
提出了一种利用激光远距离激励荧光粉发光为无线传感器网络供能的方法,解决了在环境能源缺乏时传感器网络的供能问题。对激光主动供能发射光场的分布特性进行了分析,提出了能够提高激光利用率的双面荧光靶光学结构,并设计了一种在激光主动供能方式下驱动传感器节点的高效率低功耗的能量管理电路。利用3 W,473 nm激光器搭建了激光主动供能系统,实验结果表明：利用该供能系统能得到空间角为4π/3的均匀出射光场,其平均能量密度约13μW/cm2;集成有能量管理电路的无线节点在该系统中每15 min工作一次。
英文摘要：
A method using laser stimulating phosphor to supply power remotely for WSNs is proposed,which solves the energy supply problem for WSNs when the environment energy is not strong enough.The distribution of the emitted light field of laser active power supply is analyzed.An optical structure of double-sided fluorescence converter which improves the utilization rate of laser energy is designed.An ultra-low power consumption and high efficiency energy management circuit which is suitable for sensor nodes working in the laser power supply system is designed.The laser active power supply system is built using 3 W,473 nm laser.The experiment results indicate that a uniform emitted light field with 4π /3 space angle and approximately 13 μW / cm2 average power density is obtained using this power supply system.The wireless sensor node combined with the energy management circuit works one time in every 15 min in this system.
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