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    PARTICLE DETECTION
    1.
    发明申请
    PARTICLE DETECTION 有权
    颗粒检测

    公开(公告)号：US20150241330A1

    公开(公告)日：2015-08-27

    申请号：US14687969

    申请日：2015-04-16

    Applicant: Xtralis Technologies Ltd.

    Inventor： Ron KNOX ,  Kemal AJAY ,  Karl BOETTGER

    IPC: G01N15/06 ,  H04N7/18 ,  H04N5/32 ,  G01N21/53

    CPC classification number: G01N15/06 ,  G01N21/53 ,  G01N2015/0693 ,  G08B17/125 ,  G08B29/18 ,  G08B29/185 ,  H04N5/32 ,  H04N7/18

    Abstract: A particle detection system (100), such as an active video smoke detection system, includes at least one illumination means (102) for directing a beam (106) of radiation through at least part of the air volume being monitored (110), an image sensor (104) is positioned to capture images of at least part of a beam (106) from illumination means (102); and means to analyse (107) the captured images to detect the presence of particles within the volume. At least 29 different aspects are described for improving the sensitivity, usability, and robustness of particle detection. These include, for example, configuring illumination means (102) to create a curtain of light or a rapidly-scanned beam across the air volume (110), and configuring a reflector to steer or change direction of a beam reflected from illumination means (102).

    Abstract translation: 诸如有源视频烟雾探测系统的粒子检测系统（100）包括至少一个照射装置（102），用于将辐射束（106）引导通过待监测的空气体积（110）的至少一部分， 图像传感器（104）被定位成从照明装置（102）捕获至少一部分光束（106）的图像; 以及用于分析（107）所捕获的图像以检测所述体积内的颗粒的存在的装置。 描述了至少29个不同的方面来提高粒子检测的灵敏度，可用性和鲁棒性。 这些包括例如配置照明装置（102）以产生跨过空气容积（110）的光幕或快速扫描的光束，并且配置反射器以引导或改变从照明装置（102）反射的光束的方向 ）。

    METHOD OF DETECTING PARTICLES BY DETECTING A VARIATION IN SCATTERED RADIATION
    2.
    发明申请
    METHOD OF DETECTING PARTICLES BY DETECTING A VARIATION IN SCATTERED RADIATION 有权
    通过检测散射辐射中的变化来检测颗粒的方法

    公开(公告)号：US20150177137A1

    公开(公告)日：2015-06-25

    申请号：US14636840

    申请日：2015-03-03

    Applicant: Xtralis Technologies Ltd.

    Inventor： Ron KNOX ,  Karl BOETTGER ,  Peter MEIKLE ,  Brian ALEXANDER

    IPC: G01N21/53 ,  G01S7/481 ,  G08B17/12 ,  G06K9/46 ,  G08B17/107 ,  G01N21/85 ,  G01S17/89

    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。

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