Real-Time Monitoring of Frost/Defrost Processes Using a Tapered Optical Fiber
Real-Time Monitoring of Frost/Defrost Processes Using a Tapered Optical Fiber
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使用锥形光纤实时监控霜/除霜过程
DOI：
10.1109/jsen.2020.3041443
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发表时间：
2021
影响因子：
4.3
通讯作者：
Delaunay Jean-Jacques
中科院分区：
文献类型：
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作者：
Tai Yi-Hsin;Kamal A. Syazwan A.;Park Young-Jae;Tsai Po-Cheng;Ho Ya-Lun;Wei Pei-Kuen;Daiguji Hirofumi;Delaunay Jean-Jacques
研制了一种用于检测冷凝水和结霜的锥形光纤传感器。锥形光纤的粗糙表面有效地散射通过锥形光纤传播的光。散射损耗对光纤锥形区域周围的介质具有选择性。与空气中的传输强度相比，锥形纤维上的液态水使传输强度增加了40%，而霜的存在使光传输降低了15%。霜冻使锥形光纤表面变得粗糙，从而增加光散射和传输损失。相反，液态水均匀地覆盖在锥形光纤表面，减少了光散射。此外，锥形表面的冻结水量与除霜过程中透射强度峰值的持续时间有关。提出的基于粗锥光纤的结霜检测方案可用于大型制冷系统结霜的实时远程监控系统。
A tapered fiber sensor was developed to detect the presence of condensed water and frost. The rough surface of the tapered fiber efficiently scattered the light propagating through the tapered fiber. The scattering loss is selective to the medium surrounding the tapered region of the fiber. Compared to the transmission intensity in the air, liquid water on the tapered fiber causes a 40% increase in transmission, whereas the presence of frost decreases the light transmission by 15%. Frost induces roughness on the surface of the tapered fiber and as a result increases light scattering and transmission losses. In contrast, liquid water uniformly covers the tapered fiber surface and reduces the light scattering. Furthermore, the amount of frozen water on the tapered surface is related to the duration of the transmission intensity peak during the defrosting process. The proposed detection scheme based on a rough tapered fiber can be utilized in real-time remote monitoring systems of the frost formation in large refrigeration systems.