Blade tip timing vibration monitoring method based on fiber Bragg

A tip-timing method based on fiber Bragg grating magnetically coupling sensor is proposed to study and analyze the ventilator blade vibration, aiming at realizing long-distance and non-contact real-time online safety monitoring of blade vibration. Fiber grating magnetic coupling sensors has advantages such as explosion-proof, protection against harsh environment with humid air, full of dust and greasy dirt, capable of achieving long-distance signal transmission.