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    Particle precipitator
    11.
    发明授权
    Particle precipitator 有权

    公开(公告)号：US09993828B2

    公开(公告)日：2018-06-12

    申请号：US13582839

    申请日：2011-03-03

    Applicant: Kemal Ajay ,  Brian Alexander

    Inventor： Kemal Ajay ,  Brian Alexander

    IPC: B03C3/34 ,  G08B17/113 ,  G01N15/06 ,  G08B17/10 ,  B03C3/08 ,  B03C3/36 ,  B01D53/32

    CPC classification number: B03C3/34 ,  B01D53/323 ,  B03C3/08 ,  B03C3/366 ,  B03C2201/24 ,  G01N15/06 ,  G08B17/10 ,  G08B17/113

    Abstract: A particle separation system for separating particles in an airflow upstream of a detection chamber in an aspirating smoke detector is disclosed. The particle separation system includes an airflow path for directing the airflow from an inlet to an outlet. The airflow path includes a first airflow path section in a first direction and a second airflow path section in a second direction, the first and second directions being different relative to each other. The airflow path also includes at least one electrically charged surface such that the airflow undergoes electrostatic precipitation as it traverses the airflow path. A method of separating particles in an airflow upstream of a detection chamber in an aspirating smoke detector is also disclosed.

    PARTICLE DETECTOR WITH DUST REJECTION
    13.
    发明申请
    PARTICLE DETECTOR WITH DUST REJECTION 有权
    颗粒检测器与防尘

    公开(公告)号：US20140197956A1

    公开(公告)日：2014-07-17

    申请号：US14127984

    申请日：2012-06-21

    Applicant: Brian Alexander ,  Kemal Ajay

    Inventor： Brian Alexander ,  Kemal Ajay

    IPC: G08B17/10 ,  G08B29/24

    CPC classification number: G08B17/10 ,  G08B29/24

    Abstract: A system and method of reducing the incidence of false alarms attributable to dust in smoke detection apparatus. The method includes obtaining at least two sample air flows, subjecting a first airflow to particle reduction and measuring the level of particles in the first airflow and generating a first signal indicative of the intensity. The method also includes measuring the level of particles in the second airflow and generating a second signal indicative of the intensity. The first signal is compared to a predetermined alarm level and, if the alarm level is achieved, the first and second signals are subsequently compared and an output signal is generated based on the relative difference between the first and second signals.

    Abstract translation: 一种降低烟雾检测装置中灰尘的误报的发生率的系统和方法。 该方法包括获得至少两个样品空气流，对第一气流进行颗粒减小并测量第一气流中的颗粒水平并产生指示强度的第一信号。 该方法还包括测量第二气流中的颗粒水平并产生指示强度的第二信号。 将第一信号与预定的报警电平进行比较，如果实现了报警电平，则随后比较第一和第二信号，并且基于第一和第二信号之间的相对差产生输出信号。

    Method of detecting particles by detecting a variation in scattered radiation
    15.
    发明授权
    Method of detecting particles by detecting a variation in scattered radiation 有权
    通过检测散射辐射的变化来检测颗粒的方法

    公开(公告)号：US07983445B2

    公开(公告)日：2011-07-19

    申请号：US10556807

    申请日：2004-05-14

    Applicant: Ron Knox ,  Karl Boettger ,  Peter Meikle ,  Brian Alexander

    Inventor： Ron Knox ,  Karl Boettger ,  Peter Meikle ,  Brian Alexander

    IPC: G06K9/00

    CPC classification number: G01N21/53 ,  G01N15/1434 ,  G01N21/84 ,  G01N21/85 ,  G01N2201/06113 ,  G01N2201/12 ,  G01S7/4802 ,  G01S7/4811 ,  G01S7/497 ,  G01S17/89 ,  G06K9/46 ,  G08B17/10 ,  G08B17/103 ,  G08B17/107 ,  G08B17/125

    Abstract: A smoke detecting method which uses a beam of radiation such as a laser (16), to monitor a region, such as a room (12). A camera (14) is used to capture images of part of the room (12), including a path of the laser beam. Particles in the laser beam scatter light (30), and this is captured by the camera (14) for analysis. A processor (20) extracts data relating to the scattered light (30) to determine the density of particles in the beam, to determine the level of smoke in the region. The laser may have a modulated output (38) so that images captured without the laser tuned “on” can be used as a reference point and compared to images taken with the laser turned “on”, to assist in determining the level of scattered light (30) compared to ambient light. Filters (24, 26) may be used to decrease signals generated from background light.

    Abstract translation: 使用诸如激光（16）的辐射束的烟雾检测方法来监视诸如房间（12）的区域。 相机（14）用于捕获包括激光束的路径的房间（12）的一部分的图像。 激光束中的粒子散射光（30），并且由相机（14）捕获用于分析。 处理器（20）提取与散射光（30）相关的数据，以确定光束中的粒子的密度，以确定该区域中的烟雾水平。 激光器可以具有调制输出（38），使得在没有激光调谐为“开”的情况下拍摄的图像可以用作参考点，并且与激光器“打开”拍摄的图像进行比较，以帮助确定散射光的水平 （30）与环境光相比。 滤波器（24,26）可用于减少从背景光产生的信号。

    Particle detector
    16.
    发明申请
    Particle detector 有权
    粒子检测器

    公开(公告)号：US20070064980A1

    公开(公告)日：2007-03-22

    申请号：US10556807

    申请日：2004-05-14

    Applicant: Ron Knox ,  Karl Boettger ,  Peter Meikle ,  Brian Alexander

    Inventor： Ron Knox ,  Karl Boettger ,  Peter Meikle ,  Brian Alexander

    IPC: G06T7/20

    CPC classification number: G01N21/53 ,  G01N15/1434 ,  G01N21/84 ,  G01N21/85 ,  G01N2201/06113 ,  G01N2201/12 ,  G01S7/4802 ,  G01S7/4811 ,  G01S7/497 ,  G01S17/89 ,  G06K9/46 ,  G08B17/10 ,  G08B17/103 ,  G08B17/107 ,  G08B17/125

    Abstract: A smoke detector (10) is disclosed which uses a beam of radiation such as a laser (16), to monitor a region, such a room (12). A camera (14) is used to capture images of part of the room (12), including a path of the laser beam. Particles in the laser beam scatter light (30), and this is captured by the camera (14) for analysis. A processor (20) extracts data relating to the scattered light (30) to determine the density of particles in the beam, to determine the level of smoke in the region. The laser may have a modulated output (38) so that images captured without the laser can be used as a reference point and compared to images taken with the laser on, to assist in determining the level of scattered light (30) compared to ambient light. Filters (24, 26) may be used to decrease signals generated from background light.

    Abstract translation: 公开了一种烟雾探测器（10），其使用诸如激光（16）的辐射束来监测区域，例如房间（12）。 相机（14）用于捕获包括激光束的路径的房间（12）的一部分的图像。 激光束中的粒子散射光（30），并且由相机（14）捕获用于分析。 处理器（20）提取与散射光（30）相关的数据，以确定光束中的粒子的密度，以确定该区域中的烟雾水平。 激光器可以具有调制输出（38），使得不用激光捕获的图像可以用作参考点并与用激光打开的图像进行比较，以帮助确定与环境光相比的散射光（30）的水平 。 滤波器（24,26）可用于减少从背景光产生的信号。

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