A method for detecting and determining a location of an overheat condition includes producing a narrowband optical signal with a laser source and optical pulse generator. The optical signal is sent into the optical fiber. A plurality of reflected optical signals is received. Reflection intensities are detected using a photodetector. The reflection intensities are compared with a triggering threshold. Response times of the reflected optical signals are recorded whenever the reflection intensity of the optical signals is greater than the triggering threshold. The narrowband optical signal is adjusted to another wavelength. An anomaly reflected optical signal is identified using a characteristic of the timings obtained through a range of wavelengths. The location of the overheat condition recorded response times is calculated. The location and existence of the overheat condition is communicated.


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    Title :

    OVERHEAT DETECTION USING A FIBER BRAGG GRATINGS ARRAY BY TIME-OF-FLIGHT


    Additional title:

    DETECTION DE SURCHAUFFE AU MOYEN D`UN RESEAU DE BRAGG SUR FIBRE PAR TEMPS DE VOL


    Contributors:
    LIU LEI (author) / MILLER MARK (author)

    Publication date :

    2019-12-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01K MEASURING TEMPERATURE , Messen der Temperatur / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein



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