研究目的
To introduce the smartphone as a portable multi-sensing platform for educational, laboratory, field, and consumer applications by developing a low-cost kit to turn smartphones into versatile platforms for interrogating optical fiber sensors.
研究成果
A development kit comprised of fiber support and application software was designed to convert an ordinary smartphone to an optical fiber sensor interrogation unit. The system was evaluated for the measurement of displacement, refractive index, and temperature based on a modular approach, providing a feasible and straightforward technology for implementing OFS.
研究不足
The sensor performance can be improved by changing the transducer setup with the use of specialty fibers and different sensing principles. The response for T < 60?C could be improved by using a hetero-core fiber structure.
1：Experimental Design and Method Selection:
The system was designed to be used on a Samsung Galaxy S9 Plus smartphone, with a 3D-printed fiber support and an application developed for the Android operating system.
2：Sample Selection and Data Sources:
Different types of sensors based on multimode fiber and LED source were tested.
3：List of Experimental Equipment and Materials:
Samsung Galaxy S9 Plus smartphone, 3D-printer (Ultimaker 2+ Extend) with PETG filament, multimode fiber cable with SC/PC termination, SC-SC adapter, white LED.
4：Experimental Procedures and Operational Workflow:
The light from a white LED is coupled to the silica multimode fiber, then the transmitted or reflected intensity is detected by the camera and processed in the application software.
5：Data Analysis Methods:
The output intensity was obtained by calculating the average of the pixel values inside the ROI, followed by a normalization routine to compensate source fluctuations.
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