公开(公告)号：US09057485B2

公开(公告)日：2015-06-16

申请号：US14451330

申请日：2014-08-04

Applicant: Xtralis Technologies Ltd

Inventor： Ron Knox ,  Karl Boettger ,  Kemal Ajay

IPC: G01N21/00 ,  F21K99/00 ,  G01N21/53 ,  G01N15/02 ,  G01N15/14 ,  G01N15/10

CPC classification number: G01N21/53 ,  F21K9/00 ,  G01N15/0205 ,  G01N15/10 ,  G01N15/1434 ,  G01N15/1459 ,  G01N21/538 ,  G01N2201/061 ,  G01N2201/062 ,  G01N2201/0621 ,  G01N2201/0627 ,  G01N2201/0633 ,  G01N2201/0696

Abstract: A beam detector including a light source, a receiver, and a target, acting in cooperation to detect particles in a monitored area. The target reflects incident light, resulting in reflected light being returned to receiver. The receiver is capable of recording and reporting light intensity at a plurality of points across its field of view. In the preferred form the detector emits a first light beam in a first wavelength band; a second light beam in a second wavelength band; and a third light beam in a third wavelength band, wherein the first and second wavelengths bands are substantially equal and are different to the third wavelength band.

Abstract translation: 一种包括光源，接收器和目标的光束检测器，其协同作用以检测被监视区域中的微粒。 目标反射入射光，导致反射光返回到接收器。 接收机能够在整个视场的多个点上记录和报告光强度。 在优选形式中，检测器发射第一波长带中的第一光束; 在第二波长带中的第二光束; 以及第三波长带中的第三光束，其中所述第一和第二波长带基本相等并且与所述第三波长带不同。

公开(公告)号：US20150128722A1

公开(公告)日：2015-05-14

申请号：US14516727

申请日：2014-10-17

Applicant: Xtralis Technologies Ltd.

Inventor： Kemal AJAY ,  Arjun Vinoo CAPRIHAN ,  Michael REZNY

IPC: G01F1/74 ,  G01F1/66

CPC classification number: G01F1/74 ,  G01F1/66 ,  G01F1/667 ,  G01N1/2205 ,  G01N1/2273 ,  G01N1/26 ,  G01N29/024 ,  G01N2015/0046 ,  G01N2015/1486 ,  G01N2291/0217 ,  G01N2291/02408 ,  G01N2291/02836 ,  G08B17/10 ,  G08B17/113

Abstract: A method of detecting one or more blocked sampling holes in a pipe of an aspirated smoke detector system. The method includes ascertaining the base flow of fluid through a particle detector using a flow sensor; monitoring subsequent flow through the particle detector; comparing the subsequent flow with the base flow; and indicating a fault if the difference between the base flow and the subsequent flow exceeds a predetermined threshold.

Abstract translation: 一种检测吸气式烟雾探测器系统的管道中的一个或多个阻塞采样孔的方法。 该方法包括使用流量传感器确定通过粒子检测器的流体的基本流量; 监测通过粒子检测器的后续流量; 将后续流量与基本流量进行比较; 并且如果基本流量与后续流量之间的差异超过预定阈值则指示故障。

公开(公告)号：US20150096389A1

公开(公告)日：2015-04-09

申请号：US14402748

申请日：2013-05-21

Applicant: Xtralis Technologies Ltd.

Inventor： Ron Knox

IPC: G01N1/22 ,  G01N33/00

CPC classification number: G01N1/2247 ,  G01N1/26 ,  G01N33/0009 ,  G05D7/0676 ,  G08B17/10 ,  G08B17/113

Abstract: A sampling point for use with an aspirating particle detection system. The sampling point includes: a body; a plurality of apertures in the body for drawing an air sample from an ambient environment; an outlet for delivering the sampled air, at a predetermined sample flow rate, from the body into a sampling pipe of the network of sampling pipes; and a means for maintaining the predetermined sample flow rate regardless of the presence or absence of ambient flow of air about the body. A particle detection system, and air sampling system are also described.

Abstract translation: 用于吸气颗粒检测系统的采样点。 抽样点包括：一个身体; 身体中的多个孔，用于从周围环境抽取空气样本; 用于将取样空气以预定的样品流量从身体输送到采样管网络的采样管的出口; 以及用于保持预定样品流速的方式，而不管周围空气是否存在于身体周围。 还描述了颗粒检测系统和空气取样系统。

公开(公告)号：US09002065B2

公开(公告)日：2015-04-07

申请号：US14089315

申请日：2013-11-25

Applicant: Xtralis Technologies Ltd

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

IPC: G06K9/00 ,  G01N21/84 ,  G01S7/48 ,  G01S7/481 ,  G01S7/497 ,  G01S17/89 ,  G08B17/103 ,  G08B17/107 ,  G08B17/12 ,  G06K9/46 ,  G01N21/53

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。