A hazardous condition detection system for an enclosure includes at least three detectors and a controller. Each detector is mounted within the enclosure. Each detector is configured to output a signal representing a first lower level of severity (a pre-alarm threshold) and a signal representing a second higher level of severity (an alarm threshold). The controller monitors the operational status of each of the detectors. In a first mode when all the detectors are operational, the controller generates an alarm signal when at least two detectors output a signal at the alarm threshold level. In a second mode when at least one of the at least three detectors are inoperative and at least two of the at least three detectors are operational, the controller generates an alarm signal when one detector outputs a signal at the alarm threshold level and another detector outputs a signal at the pre-alarm threshold level.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Dual-loop smoke and fire detector system and method


    Beteiligte:

    Erscheinungsdatum :

    31.05.2016


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



    DUAL-LOOP SMOKE AND FIRE DETECTOR SYSTEM AND METHOD

    LEWINSKI DANIEL F | Europäisches Patentamt | 2017

    Freier Zugriff

    Fire Smoke Detector

    CHOI WOOK | Europäisches Patentamt | 2017

    Freier Zugriff

    Fiber optic linear smoke fire detector [4453-27]

    Kulakov, S. V. / Moskaletz, O. D. / Preslenev, L. N. et al. | British Library Conference Proceedings | 2001


    SMOKE DETECTOR SYSTEM

    RENNIE PAUL / JONES BETH A | Europäisches Patentamt | 2015

    Freier Zugriff

    SMOKE DETECTOR

    BAXENDELL DOUG JOHN / BELL KENNETH FRAZER / ISAACSON MICHAEL JOHN et al. | Europäisches Patentamt | 2017

    Freier Zugriff