Е-Публикации
Технически университет - София

Abstract: . This paper presents fiber optic data transmission system for temperature measurements. It is used for short-range frequency modulated data transmission in a noisy electromagnetic environment caused by high voltage equipment. The system is composed of an input data converter, optical transmitter, optical fiber channel, receiver and output data converter. It operates at a wavelength of 850 µm, with 100 MS/s transfer rate, at possible distance up to 2000 m. The system is fully assembled and tested in a laboratory environment. It is a reliable solution for single and multichannel temperature monitoring without an electric connection between transmitting and receiving sides. At the current implementation single channel data transmission is performed. Temperature is measured by thermo-electric sensor e.g. thermocouple or thermo-resistor, where data encoding and conversion device is optimized for the particular sensor constrains and typical sensor output signal. Multichannel data transmission is also possible within the current system implementation.

References

1. T. Liu et al., "A distributed temperature sensor based on two mode fiber," in 2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR), Singapore, 2017, pp. 1-2.
2. W. Xiang, H. Guo, N. Chen, Z. Chen, T. Wang and F. Pang, "Cladding Mode Resonance Based Fiber for Temperature Measurement," in 2008 China-Japan Joint Microwave Conference, 2008, pp. 571-573.
3. T. Ringel, M. Willsch and T. Bosselmann, "Rayleigh-based distributed temperature sensing and Fiber Bragg Grating point temperature sensing with a single optical fiber on high electrical potential of 1 MV," in 2017 25th Optical Fiber Sensors Conference (OFS), Jeju, Korea (South), 2017, pp. 1-4.
4. Avago Technologies Inc. HFBR-0400Z, HFBR-14xxZ Datasheet, (2006).
5. Measurement Computing Co. „Data Acquisition Handbook”, USA (2012).
6. B. Du et al., "High-Density Weak in-Fiber Micro-Cavity Array for Distributed High-Temperature Sensing with Millimeter Spatial Resolution," Journal of Lightwave Technology, 40 (22), pp. 7447-7455 (2022).
7. Y. -J. Zhang, Y. -S. Tian, X. -H. Fu and W. Bi, "Wide-Range Fiber Bragg Grating Displacement Sensor with Temperature Compensation," in 2017 2nd International Conference for Fiber optic and Photonic Sensors for Industrial and Safety Applications (OFSIS), Brisbane, QLD, Australia, 2017, pp. 91-96.
8. I. Georgi, A. Spasova, V. Mateev, I. Marinova, Applied Complex Diagnostics and Monitoring of Special Power Transformers, Energies 16 (5) 2142, (2023).

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