Simultaneous Measurement of Ultraviolet Irradiance and Temperature by Employing Optical Fiber SPR Sensor With Ag/ZnO/PDMS Coating

Cheng, Tonglei; Li, Bin; Zhang, Fan; Liu, Wei; Chen, Xiaoyu; Gao, Yuanhongliu; Yan, Xin; Zhang, Xuenan

doi:10.1109/tim.2022.3232170

Cited by 12 publications

(1 citation statement)

References 38 publications

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“…At present, fiber optic temperature sensors mainly include FBG sensors [6], polymer filled Fabry Perot (FP) sensors [7], PDMS coated SPR sensors [8], fluorescence sensors [9], etc. Although previous reports have achieved high temperature measurement accuracy, the experimental equipment mainly uses broadband fiber optic light sources [10] and fiber optic spectrometers [11].…”

Section: Introductionmentioning

confidence: 99%

Machine Learning of Speckle Images Assisted Wearable Temperature Skin with Implanted Fiber Optic Sensor

SHI,

WANG,

DING

et al. 2024

Preprint

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Machine learning based fiber optic sensing technology is expected to achieve integrated low-cost demodulation solutions in future miniaturized human temperature sensing. In this work, we proposed a machine learning of speckle images assisted wearable temperature skin with implanted fiber optic sensor. The balloon type sensor is sandwiched between two flexible Polydimethylsiloxane (PDMS) films and nested on a hard UV polymer cap. The volume of UV polymer cap will change with temperature, thereby driving changes in the radius of balloon shaped optical fiber. This leads to changes in the speckle pattern generated at the end of the optical fiber, which is then demodulated through machine learning. The experiment shows the speckle variation of the sensor every 0.1°C in the temperature range of 36.4°C to 37.4°C. The "SpeckleNet" regression model based on Visual Geometry Group-16 (VGG-16) is proposed, which adopts fewer convolutional and max pooling kernels, and uses fewer fully-connected layers to reduce computational complexity. The prediction accuracy of the model can reach 99.88%. The research content of this article has good application prospects in the field of human wearable temperature sensors.

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