2D pressure sensing map based on distributed sensing approach for biomedical application

Zhanerke Katrenova; Shakhrizat Alisherov; Turar Abdol; Madina Yergibay; Zhanat Kappassov; Daniele Tosi; Carlo Molardi

doi:10.1117/12.2643706

19 December 2022 2D pressure sensing map based on distributed sensing approach for biomedical application

Zhanerke Katrenova, Shakhrizat Alisherov, Turar Abdol, Madina Yergibay, Zhanat Kappassov, Daniele Tosi, Carlo Molardi

Proceedings Volume 12321, Advanced Sensor Systems and Applications XII; 1232109 (2022) https://doi.org/10.1117/12.2643706
Event: SPIE/COS Photonics Asia, 2022, Online Only

Abstract

On the basis of Optical Frequency Domain Reflectometry (OFDR) principles, Optical Backscatter Reflectometry (OBR) is able to convert a simple and cheap single mode fiber (SMF) into an effective spatially distributed sensor of temperature and strain. By using different spatial configurations of SMFs, it can be obtained a 2D sensing map of applied forces over a delimited surface. This can be useful in biomedical applications such as force byte measurement. Here, a 2D pressure sensing map, based on distributed fiber optic sensing technique, is presented. The two-dimensional approach is achieved by bending the optical fiber along the surface to get ten lines embedded in silicone material, thus obtaining a carpet of 2 by 6 cm. The highly resolved sensing map is achieved by setting fiber lines 2 mm apart from each other with a sensing range of 2 mm over the fiber. The distributed strain, detected by the embedded fiber, is then converted into a pressure map. The pressure sensitivity coefficient of the map has been successfully characterized. The setup has been validated for surface measurement of wavelength shift values over 9 points on the sensing carpet with 310 total sensing points (10 fiber lines, each having 31 sensing points per 6 cm length). The peculiarity of sensing surfaces based on their mechanical properties gives an opportunity for improved response to curvature due to the embedding or attaching the sensor to irregular shapes and geometries.

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Citation Download Citation

Zhanerke Katrenova, Shakhrizat Alisherov, Turar Abdol, Madina Yergibay, Zhanat Kappassov, Daniele Tosi, and Carlo Molardi "2D pressure sensing map based on distributed sensing approach for biomedical application", Proc. SPIE 12321, Advanced Sensor Systems and Applications XII, 1232109 (19 December 2022); https://doi.org/10.1117/12.2643706

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