Post by christina on Mar 25, 2024 3:28:50 GMT -5
full text: www.ericcointernational.com/application/fiber-optic-gyro-track-accuracy-detection.html
1. Principle of fiber optic gyroscope instrument inspection vehicle
1.1 Working principle of fiber optic gyroscope
It is assumed that two beams of light with the same characteristics are formed from the same light source in a closed optical path and propagate in opposite directions, and the angular speed of the optical fiber coil rotation in space is calculated by the optical path difference generated by the two beams at the convergence point, that is, the Sagnac effect.
The following diagram shows the Sagnac effect. X is the incident point of the beam, Y is the exit point of the beam, and Ω is the angular rate.
1.2 Principle of chord measurement
The detection technology of track irregularity based on fiber optic gyroscope (FOG) is an advanced track detection method in the current string measurement method. Using the gyroscope to measure the Angle, the transfer equation between the track direction is changed by the Angle of the track detector, and the track direction irregularity data is obtained.
2. Analysis of measurement results
1. Principle of fiber optic gyroscope instrument inspection vehicle
1.1 Working principle of fiber optic gyroscope
It is assumed that two beams of light with the same characteristics are formed from the same light source in a closed optical path and propagate in opposite directions, and the angular speed of the optical fiber coil rotation in space is calculated by the optical path difference generated by the two beams at the convergence point, that is, the Sagnac effect.
The following diagram shows the Sagnac effect. X is the incident point of the beam, Y is the exit point of the beam, and Ω is the angular rate.
1.2 Principle of chord measurement
The detection technology of track irregularity based on fiber optic gyroscope (FOG) is an advanced track detection method in the current string measurement method. Using the gyroscope to measure the Angle, the transfer equation between the track direction is changed by the Angle of the track detector, and the track direction irregularity data is obtained.
2. Analysis of measurement results