Optical fiber Bragg grating pressure sensor and corresponding measurement method thereof
An optical fiber Bragg and pressure sensor technology, which is applied in the measurement of fluid pressure using optical methods, and the measurement of force by measuring the change of optical properties of materials when they are stressed, can solve the problems of temperature cross-sensitivity and difficulty in accurately measuring pressure, etc. Achieve the effect of easy operation, solve temperature cross-sensitivity, and improve measurement accuracy
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[0032] The present invention will be described in further detail below in conjunction with the embodiments of the drawings.
[0033] The fiber Bragg grating pressure sensor proposed by the present invention, such as figure 1 with figure 2 As shown, it includes a cylindrical shell 1, a circular elastic diaphragm 2, an L-shaped equal-strength beam 3, and a fiber Bragg grating 4. The top of the shell 1 is provided with an opening 11, and the opening 11 and the shell The internal space of 1 is connected to form a cavity 12 with an opening. The elastic diaphragm 2 is connected to the top end of the housing 1. The elastic diaphragm 2 covers the opening 11, and the L-shaped equal-strength beam 3 is arranged in the cavity 12. The fixing plate 31 of the equal-strength beam 3 can be fixedly connected to the cavity wall of the cavity 12 by fasteners such as screws. The free end of the beam arm 32 of the L-shaped equal-strength beam 3 is provided with a compression block 33 and an elastic d...
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