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    SMOKE DETECTOR WITH INTEGRATED SENSING
    101.
    发明公开
    SMOKE DETECTOR WITH INTEGRATED SENSING 审中-公开

    公开(公告)号：EP3945510A1

    公开(公告)日：2022-02-02

    申请号：EP21187783.2

    申请日：2021-07-26

    申请人： Carrier Corporation

    发明人： GADONNIEX, Dennis M. ,  WOLF, Rick

    IPC分类号： G08B29/14

    摘要： A smoke detector (100) and method for testing a smoke detector (100) are provided. The smoke detector (100) includes a housing (110) defining a chamber (111), an emitter (131, 132), and a receiver (133). The housing (110) includes an inlet port (112) and an outlet port (113) configured to allow an airflow (400) to pass through the chamber (111). The emitter (131, 132) is configured to emit light into the chamber (111). The receiver (133) is configured to receive light reflected by ambient materials in the airflow (400) passing through the chamber (111). The smoke detector (100) includes an entry point (122) and an exit point (123), defining a channel (124) therebetween. At least a portion of the airflow (400) passes through the channel (124). The channel (124) is in fluid communication with a sensor. The sensor is configured to detect at least one of a pressure differential and a mass flow of the airflow (400). The smoke detector (100) and method for testing the smoke detector (100) enable in situ testing of the smoke detector (100).

    SELF-TESTING FIRE SENSING DEVICE
    102.
    发明公开
    SELF-TESTING FIRE SENSING DEVICE 审中-公开

    公开(公告)号：EP3859706A1

    公开(公告)日：2021-08-04

    申请号：EP21153865.7

    申请日：2021-01-27

    申请人： Honeywell International Inc.

    发明人： LANG, Scott ,  BARSON, Michael ,  WOLF, Benjamin ,  DEARDEN, Christopher

    IPC分类号： G08B29/14

    摘要： Devices, methods, and systems for a self-testing fire sensing device are described herein. One device includes an adjustable particle generator and a variable airflow generator configured to generate an aerosol density level, an optical scatter chamber configured to measure a rate at which the aerosol density level decreases after the aerosol density level has been generated, and a controller configured to compare the measured rate at which the aerosol density level decreases with a baseline rate, and determine whether the self-testing fire sensing device requires maintenance based on the comparison of the measured rate at which the aerosol density level decreases and the baseline rate.