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Principles and application of distributed optical fiber temperature sensor (DTS) are introduced. Applications of DTS in power system in Shanghai World Expo project and Shanghai Caojing thermal power plant are studied as examples. Problems and solutions are researched. Test results of the two examples engineering project are listed.
Working principle of distributed optical fiber temperature sensor (DTS) system is introduced briefly in his paper. And factors affecting stability of DTS system are discussed. Electromagnetic interference and environmental temperature are important factors to stability of the DTS system. Metal shield is used to reduce electromagnetic interference. Temperature compensation circuit and sampling correction...
A distributed optical fiber sensor (DOFS) system with a sensing distance of 10 km was developed for applications in coal mine temperature measurement and fire alarm. The achieved temperature resolution and uncertainty are 0.1 and ±2°C, respectively. And the spatial resolution and measurement time are 3 m and 12 s, respectively.
Distributed optical fiber temperature sensor (DTS) for underground coal gasification (UCG) system using is studied in this paper. By measuring temperature of reacting mine gasification process can be controlled. Calibration of DTS and experiment result are introduced. The results show that, DTS can play an important role in UCG systems.
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