SYSTEM AND METHOD FOR CHAMBERLESS SMOKE DETECTION AND INDOOR AIR QUALITY MONITORING

    公开(公告)号:EP3413280A1

    公开(公告)日:2018-12-12

    申请号:EP18176082.8

    申请日:2018-06-05

    IPC分类号: G08B17/107 G01N21/53

    摘要: A system for detection and monitoring includes one or more light sources configured to emit light into a monitored space. At least one of the light sources is configured to emit a respective emission cone having a respective emission cone axis. One or more light sensing devices are configured to receive scattered light. At least one of the one or more light sensing devices defines a respective acceptance cone having a respective acceptance cone axis. The emission cone axis of the emission cone, and/or the acceptance cone axis of the light sensing device is angled toward the other. A processor is operatively connected to the at least one light sensing devices to evaluate the scattered light for the presence of particulates in the monitored space.

    CHAMBERLESS AIR QUALITY MONITORS WITH TEMPERATURE SENSING

    公开(公告)号:EP3511914A1

    公开(公告)日:2019-07-17

    申请号:EP19151826.5

    申请日:2019-01-15

    摘要: A chamberless indoor air quality monitor system includes a detector body. A resistive heater is operatively connected to the detector body. An active temperature sensor operatively connected to the resistive heater and operatively connected to an outer surface of the detector body configured to take an active temperature measurement. A method for measuring temperature in a chamberless indoor air quality monitor system includes generating an active temperature measurement with an active temperature sensor operatively connected to an outer surface of the detector body. The method includes heating the active temperature sensor with a resistive heater operatively connected to the detector body. The method includes comparing the active temperature measurements to one another to generate a corrected active temperature measurement based on a temperature difference over time between one or more of the active temperature measurements.

    PROTECTIVE COVER FOR CHAMBERLESS POINT SENSOR

    公开(公告)号:EP3547278A3

    公开(公告)日:2019-11-20

    申请号:EP19164852.6

    申请日:2019-03-25

    IPC分类号: G08B17/107 G08B17/113

    摘要: A covered chamberless particulate detector includes a chamberless detector configured to produce a signal when particulate sensing events occurs, one or more optical emitters configured to emit one or more emitting cones of light, one or more optical sensors defining one or more receiving cones and configured to detect occurrence of particulate sensing events, and a protective cover defining an inside region and an outside region. Each of the one or more emitting cones of light is configured to overlap with each of the one or more receiving cones, thereby creating one or more sensing volumes which may be in the inside region, the outside region, or both regions. The protective cover can be transparent, partially transparent, or opaque, and can include apertures. The optical emitters and detectors can use one or more wavelengths, allowing discrimination of various airborne particulates.

    OPTICALLY ENHANCED PROTECTIVE COVER FOR CHAMBERLESS POINT SENSOR

    公开(公告)号:EP3582198A1

    公开(公告)日:2019-12-18

    申请号:EP19180405.3

    申请日:2019-06-14

    IPC分类号: G08B17/107

    摘要: A covered chamberless particulate detector includes a chamberless detector configured to produce a signal when particulate sensing events occur; one or more optical emitters disposed on the chamberless detector, configured to emit one or more emitting cones of light; one or more optical sensors disposed on the chamberless detector, defining one or more receiving cones; and a protective cover on the chamberless detector defining an inside region and an outside region. Each of the one or more optical sensors is configured to detect occurrence of particulate sensing events. The protective cover includes a material having one or more optical properties of transmission, reflection, and absorption; and at least of these optical properties has a bandwidth.

    PROTECTIVE COVER FOR CHAMBERLESS POINT SENSOR

    公开(公告)号:EP3547278A2

    公开(公告)日:2019-10-02

    申请号:EP19164852.6

    申请日:2019-03-25

    IPC分类号: G08B17/107 G08B17/113

    摘要: A covered chamberless particulate detector includes a chamberless detector configured to produce a signal when particulate sensing events occurs, one or more optical emitters configured to emit one or more emitting cones of light, one or more optical sensors defining one or more receiving cones and configured to detect occurrence of particulate sensing events, and a protective cover defining an inside region and an outside region. Each of the one or more emitting cones of light is configured to overlap with each of the one or more receiving cones, thereby creating one or more sensing volumes which may be in the inside region, the outside region, or both regions. The protective cover can be transparent, partially transparent, or opaque, and can include apertures. The optical emitters and detectors can use one or more wavelengths, allowing discrimination of various airborne particulates.