Distributed optical fiber sensing system capable of simultaneously measuring temperature, strain and vibration
A distributed optical fiber and sensing system technology, applied in thermometers, measuring devices, measuring heat, etc., can solve the problems of not realizing the simultaneous measurement of optical fiber temperature, strain and vibration, restricting the in-depth application of distributed optical fiber sensing technology, and achieving measurement results Accurate and reliable, solve the limitation of backscatter signal power, and the effect of reasonable system structure
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[0017] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.
[0018] As attached figure 2 As shown, this embodiment provides a distributed optical fiber sensing system for simultaneous measurement of temperature, strain, and vibration, which is provided with a temperature vibration sensing unit and a strain sensing unit, and the temperature vibration sensing unit shares the light source pulse laser 7; The sensing unit uses a frequency sweep laser 1. A host computer 22 and the above-mentioned optical fiber temperature vibration strain sensor connected to the host computer 22 are provided. Optical fiber temperature vibration strain sensor through the abov...
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