FIBER OPTICAL SENSOR OF ANGLE OF TURN Russian patent published in 2019 - IPC G01D5/353 G02B6/26 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measuring angular displacements. Fiber optic rotation angle sensor consists of a laser diode, a microcontroller, an optical power divider, two photodetectors and two segments of optical fiber. Segments of optical fiber rolled into half rings around the hinge. Optical fiber connects a laser diode to photo detectors via an optical power divider. Optical power divider divides in equal respects the signal of the laser diode into two segments of the optical fiber. Ends of the segments of the optical fiber are fixed on the movable and fixed elements of the structure with the possibility of changing the radii of the first and second half-rings during the angular rotation of the hinge. Microcontroller is connected to a laser diode and controls its radiation power so as to provide a constant value of the sum of the photodetector signals.

EFFECT: technical result is to reduce the temperature error of the sensor.

1 cl, 4 dwg