FIBER-OPTICAL GYROSCOPE Russian patent published in 2000 - IPC

FIELD: design and manufacture of fiber-optical gyroscopes. SUBSTANCE: given fiber-optical gyroscope includes fibrous ring interferometer incorporating piezoceramic phase modulator, radiator and photodetector optically coupled to interferometer, circuits of stabilization of radiation power in fiber and of index of phase modulation. Output signal of fiber-optical gyroscope is formed thanks to detection of first harmonic of modulation frequency in output signal of photodetector. Gyroscope is supplemented with meter of excitation current of phase modulator, controlled amplifier and controlled inverter with two control inputs, one of them being integrated with control input of amplifier. With supply of control voltage to control inputs of inverter and amplifier signal of excitation current of modulator is fed to input of detecting circuits of fiber-optical gyroscope. Value of output signal of fiber-optical gyroscope is used to evaluate its serviceability. EFFECT: provision for diagnostics of serviceability of fiber-optical gyroscope before start of measurement. 1 dwg