Development of distributed temperature sensor based on single-mode fiber

Mingshun Jiang; Jing Wang; Dejun Feng; Qingmei Sui

doi:10.1117/12.819578

31 December 2008 Development of distributed temperature sensor based on single-mode fiber

Mingshun Jiang, Jing Wang, Dejun Feng, Qingmei Sui

Proceedings Volume 7130, Fourth International Symposium on Precision Mechanical Measurements; 713014 (2008) https://doi.org/10.1117/12.819578
Event: Fourth International Symposium on Precision Mechanical Measurements, 2008, Anhui, China

Abstract

The distributed optical fiber temperature measurement system (DTS) is a kind of sensing system, which is applied to the real-time measurement of the temperature field in space. It is widely used in monitoring of production process: fire alarm of coal mine and fuel depots, heat detection and temperature monitor of underground cable, seepage and leakage of dam. Through analyzing temperature effect of optical fiber Raman backscattering theoretically, a distributed temperature sensor based on single-mode fiber was designed, which overcame the inadequacies of multimode fiber. The narrow pulse width laser, excellent InGaAS PIN, low noise precision difet operational amplifier and high speed data acquisition card in order to improve the stability of this system were selected. The demodulation method based on ratio of Anti-Stokes and Stokes Raman backscattering intensity was adopted. Both hardware composition and software implementation of the system were introduced in detail. It is proved that its distinguishing ability of temperature and space are 1 m and 2 m, respectively. The system response time is about 180 s, with a sensing range of 5 km and the temperature measurement range 0~100 °C.

Citation Download Citation

Mingshun Jiang, Jing Wang, Dejun Feng, and Qingmei Sui "Development of distributed temperature sensor based on single-mode fiber", Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 713014 (31 December 2008); https://doi.org/10.1117/12.819578

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