A fiber optic gyroscope with online fault self-diagnosis function
A fiber optic gyroscope, fault self-checking technology, applied in Sagnac effect gyroscopes, gyroscopes/steering sensing equipment, instruments, etc., can solve the problems of inability to guarantee fiber optic gyroscopes, automatic alarms of fiber optic gyroscopes, and normal operation, etc. Achieve the effect of realizing online working status self-check, reducing the risk of adverse effects and increasing costs
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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0026] In the embodiment of the present invention, the fiber optic gyroscope with online fault self-checking function includes two parts: the optical path and the detection circuit, such as figure 1 shown. The optical path part includes light source, 2×2 coupler, Y waveguide, fiber ring, photodetector 1, and photodetector 2. Photodetector 1 is used to detect Sagnac interference light signal, and photodetector 2 is used to detect the output light of the light source. Signal. The output pigtail of the light source is connected to the 1-port pigtail of the 2×2 coupler, the 2-port pigtail of the 2×2 ...
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