Novel optical fiber gyroscope sensor
A fiber optic gyroscope and sensor technology, applied in the field of sensors, can solve problems such as strong noise and large errors
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[0011] As shown in Figure 1, the present invention mainly consists of a light source, a coupler, an integrated optical chip, an optical fiber loop, a detector 1, a detector 2, a noise suppression circuit, an amplifier circuit, A / D, digital demodulation, logic circuit, D / A and dsp composition.
[0012] In this example, the optical path is detected by two detectors after passing through the coupler. The two detectors are connected to the noise suppression circuit. Both detectors use photodetectors with high gain, low noise and high sensitivity. The relative noise can be effectively eliminated through the noise suppression circuit. The noise suppression circuit is connected to the A / D through the amplifying circuit, and the signal output by the suppression circuit can be amplified again, and converted into a signal suitable for digital demodulation through analog-to-digital conversion, and then the signal is connected to the logic circuit through digital demodulation. . After t...
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