An optical fiber osmotic pressure sensor with fine-tuning device and self-temperature compensation
A technology of osmotic pressure sensor and temperature compensation, which is applied in measuring devices, fluid pressure measurement using optical methods, instruments, etc., can solve problems such as being vulnerable to lightning strikes, difficult to work normally, and difficult for long-distance transmission of measurement signals, so as to ensure measurement range, good water and moisture resistance, and eliminates the effect of reducing measurement accuracy
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[0020] The present invention will be further described below in conjunction with the examples.
[0021] like figure 1 As shown, an optical fiber osmotic pressure sensor with a fine adjustment device and self-temperature compensation includes a protective shell 2 and a permeable stone shell 6, and an optical fiber fixing base 3 is installed in the protective shell 2, and the optical fiber is fixed One end of the base 3 is a rigid structure, the other end of the fiber fixing base 3 is an elastic structure, one end of the rigid structure is fixed with a temperature fiber grating 9, one end of the elastic structure is fixed with a pressure fiber grating 7, and the fiber An elastic adjustment device 8 is installed at the connection between the fixed base 3 and the pressure fiber grating 7, and the outside of the pressure fiber grating 7 is the elastic diaphragm 4 at the end of the fiber fixed base 3; the protective shell 2 is close to the temperature fiber grating. One end of 9 is...
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