Optical fiber sensor for gas compressor fluid multi-parameter measurement

The utility model provides an optical fiber sensor for gas compressor fluid multi-parameter measurement. Bragg grating type optical fibers are symmetrically distributed on the surface of an annular elastic strain sheet, and static pressure is calculated through the offset of an optical fiber central wavelength. Light intensity optical fibers vertically irradiate the center of the elastic strain sheet, two sets of receiving optical fibers receive reflected light, the offset distance of the elastic strain sheet is calculated through the light intensity ratio of the receiving optical fibers, and therefore total pressure is calculated. A temperature measurement grating optical fiber is pasted on the inner wall of a pitot tube, and the total temperature of a gas compressor is calculated through the offset of the central wavelength of the temperature measurement grating optical fiber. The other temperature measurement grating optical fiber is horizontally fixed to the inner side of a barrel-shaped metal outer shell to measure the temperature of a work environment, and temperature compensation is carried out on the total pressure and the static pressure. The optical fiber sensor has the advantages of being small in size, simple in structure and strong in capacity of resisting disturbance, and one sensor can measure the total pressure, the static pressure, the total temperature, the flow and multiple parameters of fluid.