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公开(公告)号：US5731875A
公开(公告)日：1998-03-24
申请号：US882926
申请日：1997-06-26
CPC分类号： G01N15/0205 , G02B6/4249
摘要： The new particle sensor is used for assaying particles and includes a light source comprising one or a plurality of light-emitting laser diodes. Light from each diode propagates along a flexible conduit or "light pipe," preferably a separate fiber optic strand. The sensor has a low voltage power supply and drives the diodes at 1-5 VDC. Light from one or bundled fiber optic strand(s) is focused by a focusing lens to provide an intense light beam for small-particle detection. For improved design flexibility, the light source may be mounted independently of the light beam long axis.
摘要翻译： 新的颗粒传感器用于测定颗粒，并且包括包含一个或多个发光激光二极管的光源。 来自每个二极管的光沿柔性导管或“光管”传播，优选地是单独的光纤线。 传感器具有低电压电源，并以1-5 VDC驱动二极管。 来自一个或束缚的光纤束的光被聚焦透镜聚焦，以提供用于小粒子检测的强光束。 为了提高设计灵活性，光源可以独立于光束长轴安装。
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公开(公告)号：US20080087108A1
公开(公告)日：2008-04-17
申请号：US11549259
申请日：2006-10-13
IPC分类号： G01N1/22
CPC分类号： G01N1/2202 , G01N1/2205
摘要： A portable microbial gaseous-fluid sampler includes a gaseous-fluid flow system at least partially supported by a structure. The gaseous-fluid flow system includes a gaseous-fluid intake portion having an intake port, a blower in fluid communication with the intake port, and a gaseous-fluid exhaust portion having an exhaust port. The sampler can further include an exhaust filter operable to substantially filter a totality of the gaseous fluid flowing through the sampler prior to exhausting the gaseous fluid. The sampler also can include a control system operable to control at least gaseous-fluid flow through the sampler, and a remote sampling head.
摘要翻译： 便携式微生物气体 - 液体取样器包括至少部分地由结构支撑的气态流体流动系统。 气体流体流动系统包括具有进气口的气态流体进料部分，与进气口流体连通的鼓风机和具有排气口的气体流体排出部分。 采样器还可包括排气过滤器，其可操作以在排出气体流体之前基本上过滤流过采样器的气态流体的总体。 采样器还可以包括可操作以控制至少通过采样器的气体流体流量的控制系统和远程采样头。
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公开(公告)号：USRE37353E1
公开(公告)日：2001-09-04
申请号：US08917257
申请日：1997-08-25
IPC分类号： G01N2105
CPC分类号： G01N1/2273 , G01N1/2202 , G01N15/0205 , G01N21/53 , G01N2001/2223 , G01N2001/245
摘要： Disclosed is a particle sensor having a light beam with a beam long axis and an air flow tube with an inlet end and a particle exit mouth. In an aspect of the invention, the cross-sectional area of the flow passage at the inlet end is greater than the cross-sectional area of the exit mouth. This enlarged area dramatically reduces pressure drop along the tube. The exit mouth is in registry with the light beam and is elongate in a direction substantially parallel to the beam long axis. Thus, particles flowing through the mouth pass through the beam. In another aspect, the invention includes a centrifugal blower which is light in weight and which may be battery powered.
摘要翻译： 公开了一种具有光束长轴的光束和具有入口端和颗粒出口的气流管的粒子传感器。 在本发明的一个方面，入口端的流动通道的横截面面积大于出口的横截面面积。 该放大区域显着减少沿管的压降。 出口与光束对准并且在基本上平行于光束长轴的方向上延伸。 因此，流经口的颗粒通过光束。 在另一方面，本发明包括重量轻并且可以是电池供电的离心式鼓风机。
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公开(公告)号：US5600438A
公开(公告)日：1997-02-04
申请号：US616456
申请日：1996-03-15
IPC分类号： G01N15/14 , G01N1/00 , G01N1/02 , G01N1/22 , G01N1/24 , G01N15/02 , G01N21/47 , G01N21/53 , G01N21/05
CPC分类号： G01N1/2273 , G01N15/0205 , G01N1/2202 , G01N2001/2223 , G01N2001/245 , G01N21/53
摘要： Disclosed is a particle sensor having a light beam with a beam long axis and an air flow tube with an inlet end and a particle exit mouth. In an aspect of the invention, the cross-sectional area of the flow passage at the inlet end is greater than the cross-sectional area of the exit mouth. This enlarged area dramatically reduces pressure drop along the tube. The exit mouth is in registry with the light beam and is elongate in a direction substantially parallel to the beam long axis. Thus, particles flowing through the mouth pass through the beam. In another aspect, the invention includes a centrifugal blower which is light in weight and which may be battery powered.
摘要翻译： 公开了一种具有光束长轴的光束和具有入口端和颗粒出口的气流管的粒子传感器。 在本发明的一个方面，入口端处的流动通道的横截面面积大于出口的横截面面积。 该放大区域显着减少沿管的压降。 出口与光束对准并且在基本上平行于光束长轴的方向上延伸。 因此，流经口的颗粒通过光束。 在另一方面，本发明包括重量轻并且可以是电池供电的离心式鼓风机。
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公开(公告)号：US5515164A
公开(公告)日：1996-05-07
申请号：US364389
申请日：1994-12-23
IPC分类号： G01N15/14 , G01N1/00 , G01N1/02 , G01N1/22 , G01N1/24 , G01N15/02 , G01N21/47 , G01N21/53 , G01N21/05
CPC分类号： G01N1/2273 , G01N15/0205 , G01N1/2202 , G01N2001/2223 , G01N2001/245 , G01N21/53
摘要： Disclosed is a particle sensor having a light beam with a beam long axis and an air flow tube with an inlet end and a particle exit mouth. In an aspect of the invention, the cross-sectional area of the flow passage at the inlet end is greater than the cross-sectional area of the exit mouth. This enlarged area dramatically reduces pressure drop along the tube. The exit mouth is in registry with the light beam and is elongate in a direction substantially parallel to the beam long axis. Thus, particles flowing through the mouth pass through the beam. In another aspect, the invention includes a centrifugal blower which is light in weight and which may be battery powered.
摘要翻译： 公开了一种具有光束长轴的光束和具有入口端和颗粒出口的气流管的粒子传感器。 在本发明的一个方面，入口端的流动通道的横截面面积大于出口的横截面面积。 该放大区域显着减少沿管的压降。 出口与光束对准并且在基本上平行于光束长轴的方向上延伸。 因此，流经口的颗粒通过光束。 在另一方面，本发明包括重量轻并且可以是电池供电的离心式鼓风机。
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公开(公告)号：US07752930B2
公开(公告)日：2010-07-13
申请号：US11549259
申请日：2006-10-13
IPC分类号： G01N1/22
CPC分类号： G01N1/2202 , G01N1/2205
摘要： A portable microbial gaseous-fluid sampler includes a gaseous-fluid flow system at least partially supported by a structure. The gaseous-fluid flow system includes a gaseous-fluid intake portion having an intake port, a blower in fluid communication with the intake port, and a gaseous-fluid exhaust portion having an exhaust port. The sampler can further include an exhaust filter operable to substantially filter a totality of the gaseous fluid flowing through the sampler prior to exhausting the gaseous fluid. The sampler also can include a control system operable to control at least gaseous-fluid flow through the sampler, and a remote sampling head.
摘要翻译： 便携式微生物气体 - 液体取样器包括至少部分地由结构支撑的气态流体流动系统。 气体流体流动系统包括具有进气口的气态流体进料部分，与进气口流体连通的鼓风机和具有排气口的气态流体排出部分。 采样器还可包括排气过滤器，其可操作以在排出气体流体之前基本上过滤流过采样器的气态流体的总体。 采样器还可以包括可操作以控制至少通过采样器的气体流体流量的控制系统和远程采样头。
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公开(公告)号：US5467189A
公开(公告)日：1995-11-14
申请号：US384601
申请日：1995-01-12
CPC分类号： G01N21/53 , G01N15/0205 , G01N2021/6469
摘要： The disclosure involves a particle sensor having a mirror cavity unobstructed by masks and the like. A light detector is at the mirror secondary focal point and well outside the mirror cavity. A variation includes a beam splitter and a secondary light detector to improve detection of larger particles. A second embodiment includes a pair of elliptical mirrors offset along the light beam. Light reflected by the second mirror represents only changes in laser power and light scattered by gas molecules. The resulting signal is subtracted from that produced by the first mirror to obtain a relatively "clean" signal useful to assay very small particles.
摘要翻译： 本发明涉及一种具有不透过掩模等的镜腔的粒子传感器。 光检测器在镜子辅助焦点处并且在镜腔外面。 变体包括分束器和次级光检测器，以改进较大颗粒的检测。 第二实施例包括沿着光束偏移的一对椭圆镜。 由第二镜反射的光仅代表激光功率和由气体分子散射的光的变化。 从第一反射镜产生的信号中减去所得到的信号，以获得用于测定非常小的颗粒的相对“清洁”信号。
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公开(公告)号：USD285795S
公开(公告)日：1986-09-23
申请号：US782511
申请日：1985-10-01
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9.发明授权Environmental sensor, particle counting system having an environmental sensor, and methods of operating the same 有权环境传感器，具有环境传感器的颗粒计数系统及其操作方法公开(公告)号：US07895000B2
公开(公告)日：2011-02-22
申请号：US11849439
申请日：2007-09-04
IPC分类号： G01N31/00
CPC分类号： G01N15/0205 , G01N15/0272
摘要： An environmental sensor including an inlet and an outlet such that a flow of fluid moves from the inlet to the outlet, a particle detection portion to detect particles in the fluid, and a controller connected to the particle detection portion. The environmental sensor can be in communication with a data acquisition system (e.g., via a wireless access point) to form a particle counting system. Also disclosed are methods of operating the environmental sensor and methods of operating the particle detection system.
摘要翻译： 一种环境传感器，包括入口和出口，使得流体流从入口移动到出口，用于检测流体中的颗粒的颗粒检测部分和连接到颗粒检测部分的控制器。 环境传感器可以与数据采集系统（例如，经由无线接入点）通信以形成粒子计数系统。 还公开了操作环境传感器的方法和操作颗粒检测系统的方法。
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公开(公告)号：US20090058668A1
公开(公告)日：2009-03-05
申请号：US11849421
申请日：2007-09-04
IPC分类号： G08B21/00
CPC分类号： G01N15/0205 , G01N35/00871 , G01N2001/2223 , G01N2015/0693 , G01N2015/1486 , G01N2035/00891
摘要： An environmental sensor including an inlet and an outlet such that a flow of fluid moves from the inlet to the outlet, a particle detection portion to detect particles in the fluid, and a controller connected to the particle detection portion. The environmental sensor can be in communication with a data acquisition system (e.g., via a wireless access point) to form a particle counting system. Also disclosed are methods of operating the environmental sensor and methods of operating the particle detection system.
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