Hydraulic optical fiber sensing system and manufacturing method of inner sensing baseband of hydraulic optical fiber sensing system
An optical fiber sensing system and sensing-based technology, applied in the direction of fluid pressure measurement, liquid level indicator, engine lubrication, etc. by optical methods, can solve the problem of liquid pressure and hydraulic related sensing measurement. There are no literature or patents, etc. problem, to achieve the effect of wide quasi-distributed measurement, high spatial resolution, and wide depth range
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Embodiment 1
[0076] Example 1: Based on image 3 Medium sensing baseband structure and Figure 5 The water depth sensing experiment done by the sensing unit structure.
[0077] Such as Figure 9 as shown, Figure 9 (a) is a schematic diagram of the sensing system. Only one sensing unit (ie, a pressure unit 1053) is arranged on the supporting baseband 1051, and the sensing polarization-maintaining fiber 1052 uses a commercial Panda polarization-maintaining fiber (YOFC PANDA_PM1550_125-18 / 250 ), the first sealing frame 502 is made of ABS plastic and made by a 3D printer. The pasting glue involved in the entire sensing baseband 105 is 502 glue, and the glue used for sealing is sealant. In the experiment, a water tank 901 with a tap at the bottom was used for hydraulic pressure or liquid level measurement. The water tank 901 is a cylindrical structure with an inner diameter of 20 cm. The whole sensing base strip 105 is pasted and fixed on the position near the bottom of the water tank 901...
Embodiment 2
[0078] Example 2: Based on image 3 Medium sensing baseband structure and Figure 7 Water Depth Sensing Experiments Made with Medium Sensing Unit Structure
[0079] Such as Figure 10 as shown, Figure 10 (d) is a schematic diagram of the sensing system. Three sensing units (that is, three pressure applying units 1053 ) are arranged on the supporting base belt 1051 , and the numbers are point 1, point 2 and point 3 from bottom to top. The sensing polarization-maintaining optical fiber 1052 is the same as that in Embodiment 1, and the manufacturing method and material of the second sealing frame 702 are the same as those of the first sealing frame 502 in Embodiment 1. Use with embodiment 1. The same water tank 901 as in Example 1 was used in the experiment, and the sensing baseband 105 was set vertically. The entire sensing baseband 105 was pasted and fixed near the bottom of the water tank 901 with 502 glue. The experimental principle was the same as in Example 1. After t...
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