화재감지용 광섬유 캔틸레버형 센서 응용 연구

Application of Cantilever-Type Fiber Optic Sensor for Fire Detection

Through sprinkler reaction time index (RTI) characterization, the lower the RTI, the faster the sprinkler reacts to fire. The optical properties of an optical fire sensor were combined with a silicon anisotropic etching-process technique to link the fire detection and sprinkler operating time. The sprinkler motion model adopted in this study with sprinkling density was three types: RTI 350, RTI 80, and RTI 80. An optical fiber cantilever-type sensor for fire detection with V-groove support was designed and manufactured. From the analysis results of measurement factors, such as the bending degree of the optical fiber cantilever-type, the frequency variation with the beam length, and the resonant frequency, the cantilever-type sensor can be used as an optical fire sensor for fire detection linking sprinkler RTI.