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    Filter bypass
    3.
    发明授权
    Filter bypass 有权

    公开(公告)号：US09702802B2

    公开(公告)日：2017-07-11

    申请号：US13582832

    申请日：2011-03-04

    Applicant: Kemal Ajay ,  Nitin Vayeda

    Inventor： Kemal Ajay ,  Nitin Vayeda

    IPC: G01N15/06 ,  G01N1/22 ,  G08B17/10 ,  G08B17/113

    CPC classification number: G01N15/06 ,  G01N1/2205 ,  G01N2015/0693 ,  G08B17/10 ,  G08B17/113

    Abstract: There is described a filter arrangement for a particle detector for detecting particles in an environment. The particle detector can include one or more sensors for analyzing fluid in a detection region to produce sensor output. The filter arrangement includes structure defining flow paths, for conveying fluid from the environment towards the detection region, including a first flow path, which includes a filter, and a second flow path bypassing the filter. There is also provided a mechanism for controlling relative flow rates of fluid through the first flow path and the second flow path and a controller configured to receive the sensor output corresponding to at least two relative flow rates and apply logic thereto to generate an output indicative of a condition of the filter.

    Particle detector with dust rejection
    4.
    发明授权
    Particle detector with dust rejection 有权

    公开(公告)号：US09805570B2

    公开(公告)日：2017-10-31

    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.

    PARTICLE PRECIPITATOR
    5.
    发明申请
    PARTICLE PRECIPITATOR 有权
    颗粒预处理

    公开(公告)号：US20130192341A1

    公开(公告)日：2013-08-01

    申请号：US13582839

    申请日：2011-03-03

    Applicant: Kemal Ajay ,  Brian Alexander

    Inventor： Kemal Ajay ,  Brian Alexander

    IPC: B03C3/34 ,  G01N21/55 ,  G01N15/06 ,  G01N21/59

    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.

    Abstract translation: 公开了一种用于分离吸气式烟雾探测器中检测室上游气流中的颗粒的颗粒分离系统。 颗粒分离系统包括用于将气流从入口引导到出口的气流路径。 气流路径包括在第一方向上的第一气流通道部分和第二方向上的第二气流通道部分，第一和第二方向彼此不同。 气流路径还包括至少一个充电表面，使得气流在穿过气流路径时经历静电沉淀。 还公开了一种在吸气式烟雾探测器中的检测室上游的气流中分离颗粒的方法。

    Particle precipitator
    6.
    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
    7.
    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。

    Flow metering device for an aspirated smoke detector
    8.
    发明授权
    Flow metering device for an aspirated smoke detector 有权
    吸气式烟雾探测器的流量计量装置

    公开(公告)号：US08065922B2

    公开(公告)日：2011-11-29

    申请号：US12871076

    申请日：2010-08-30

    Applicant: Kemal Ajay ,  Arjun Vinoo Caprihan ,  Ron Knox

    Inventor： Kemal Ajay ,  Arjun Vinoo Caprihan ,  Ron Knox

    IPC: G01F1/66

    CPC classification number: G01F1/662 ,  B33Y80/00 ,  G01F1/667 ,  G08B17/10 ,  G08B17/113

    Abstract: A method and apparatus for determining flow in an aspirated smoke detector system includes a plurality of sampling pipes in fluid communication with a smoke detector, a flow rate detector in at least one of the sampling pipes that senses a signal transmitted between a first and second signal transceiver, wherein the first transceiver transceives signals in at least two of the sampling pipes.

    Abstract translation: 用于确定吸气式烟雾探测器系统中的流量的方法和装置包括与烟雾探测器流体连通的多个采样管，至少一个采样管中的流量检测器，其感测在第一和第二信号之间传输的信号 收发器，其中第一收发器在至少两个采样管中收发信号。

    Particle detection
    10.
    发明授权
    Particle detection 有权
    粒子检测

    公开(公告)号：US09025144B2

    公开(公告)日：2015-05-05

    申请号：US12743171

    申请日：2008-11-14

    Applicant: Ron Knox ,  Kemal Ajay ,  Karl Boettger

    Inventor： Ron Knox ,  Kemal Ajay ,  Karl Boettger

    IPC: G01N21/00 ,  G08B17/12 ,  G01N15/06

    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 analyze (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 ）。

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