公开(公告)号：EP1812913A1

公开(公告)日：2007-08-01

申请号：EP05803201.2

申请日：2005-11-14

申请人： VFS Technologies Limited

发明人： KNOX, Ron ,  BOETTGER, Karl ,  AJAY, Kemal

IPC分类号： G08B17/10 ,  G08B17/107

CPC分类号： G01N21/49 ,  G01N15/1463 ,  G01N21/17 ,  G01N21/532 ,  G01N33/0031 ,  G01N2021/1765 ,  G01N2201/06113 ,  G01S7/4873 ,  G01S7/4876 ,  G01S17/026 ,  G01S17/87 ,  G01S17/95 ,  G08B17/103 ,  G08B17/107 ,  G08B17/117 ,  G08B17/125 ,  G08B25/10 ,  G08B29/043 ,  G08B29/185 ,  G08B29/24 ,  Y02A90/19

摘要： The invention provides use of one or more emitted beams of radiation (16), for example, laser beam(s), in combination with an image capturing means (14), for example, one or more video cameras and/or optical elements to detect particles (30), for example, smoke particles, located in an open space (12).

公开(公告)号：EP1812774A1

公开(公告)日：2007-08-01

申请号：EP05803056.0

申请日：2005-11-14

申请人： VFS Technologies Limited

发明人： AJAY, Kemal ,  CAPRIHAN, Arjun, Vinoo ,  KNOX, Ron

IPC分类号： G01F1/66 ,  G01P5/18 ,  G01P5/24

CPC分类号： G01F1/662 ,  B33Y80/00 ,  G01F1/667 ,  G08B17/10 ,  G08B17/113

摘要： The present invention relates to the field of pollution monitoring equipment and in particular to aspirated particle detector systems, which detect particles in air sampled from a number of locations. The present invention provides a method and apparatus for determining flow in an aspirated particle detector system, said system comprising a plurality of carriers in fluid communication with a particle detector, comprising means for detecting the flow rate in at least one of the carriers comprising sensing a signal transmitted between a first and a second signal transceiver (44a - d, 42) wherein the first transceiver (42) is adapted to transceive signals in at least two of the carriers. In a preferred embodiment, the invention relates to the use of an ultrasonic means of flow sensing within an aspirated smoke detector system.

摘要翻译： 一种用于确定抽吸颗粒检测器系统中的流量的方法和装置，包括与颗粒检测器流体连通的多个载体，至少一个载体中的流量检测器，其感测在第一和第二信号之间传输的信号 收发器，其中第一收发器收发至少两个载波中的信号。