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公开(公告)号：US06848325B2
公开(公告)日：2005-02-01
申请号：US09826502
申请日：2001-04-04
CPC分类号： G01N1/2226 , G01N1/2202 , G01N2001/022 , G01N2001/2223 , G01N2001/2241 , G01N2015/0662
摘要： A system for detecting particles on the outer surface of a vehicle has a housing capable of being placed in a test position adjacent to, but not in contact with, a portion of the outer surface of the vehicle. An elongate sealing member is fastened to the housing along a perimeter surrounding the wall, and the elongate sealing member has a contact surface facing away from the wall to contact the outer surface of the vehicle to define a test volume when the wall is in the test position. A gas flow system has at least one gas inlet extending through the wall for providing a gas stream against the surface of the vehicle within the test volume. This gas stream, which preferably is air, dislodges particles from the surface of the vehicle covered by the housing. The gas stream exits the test volume through a gas outlet and particles in the stream are detected.
摘要翻译： 用于检测车辆外表面上的颗粒的系统具有壳体，其能够被放置在与车辆的外表面的一部分相邻但不与其接触的测试位置。 细长密封构件沿着围绕壁的周边紧固到壳体，并且细长密封构件具有背离壁的接触表面以接触车辆的外表面以在壁处于测试中时限定测试体积 位置。 气流系统具有延伸穿过壁的至少一个气体入口，用于在测试体积内提供抵靠车辆表面的气流。 优选为空气的气流从由壳体覆盖的车辆的表面移除颗粒。 气流通过气体出口离开测试体积，并检测流中的颗粒。
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公开(公告)号：US06978657B1
公开(公告)日：2005-12-27
申请号：US10306939
申请日：2002-11-27
CPC分类号： G01N1/2214 , G01N1/40 , G01N1/405 , G01N2001/022 , G01N2001/028
摘要： A portable system for the detection of chemical particles such as explosive residue utilizes a metal fiber substrate that may either be swiped over a subject or placed in a holder in a collection module which can shoot a jet of gas at the subject to dislodge residue, and then draw the air containing the residue into the substrate. The holder is then placed in a detection module, which resistively heats the substrate to evolve the particles, and provides a gas flow to move the particles to a miniature detector in the module.
摘要翻译： 用于检测诸如爆炸性残留物的化学颗粒的便携式系统利用金属纤维基材，其可以被覆盖在受试者身上，或者放置在收集模块中的支架中，该收集模块可以在受试者处喷射气体以驱除残留物，以及 然后将含有残留物的空气抽入基材。 然后将保持器放置在检测模块中，该模块电阻地加热基底以放出颗粒，并提供气流以将颗粒移动到模块中的微型检测器。
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公开(公告)号：US06604406B1
公开(公告)日：2003-08-12
申请号：US09917017
申请日：2001-07-26
IPC分类号： G01N100
CPC分类号： G01N1/24 , G01N1/40 , G01N1/405 , G01N21/76 , G01N2001/022 , G01N2015/0662
摘要： A preconcentrator system and apparatus suited to human portable use wherein sample potentially containing a target chemical substance is drawn into a chamber and through a pervious screen. The screen is adapted to capture target chemicals and then, upon heating, to release those chemicals into the chamber. Chemicals captured and then released in this fashion are then carried to a portable chemical detection device such as a portable ion mobility spectrometer. In the preferred embodiment, the means for drawing sample into the chamber comprises a reversible fan which, when operated in reverse direction, creates a backpressure that facilitates evolution of captured target chemicals into the chamber when the screen is heated. The screen can be positioned directly in front of the detector prior to heating to improve detection capability.
摘要翻译： 一种适用于人体便携式使用的预浓缩器系统和装置，其中潜在地含有目标化学物质的样品被吸入室中并通过透过屏。 屏幕适用于捕获目标化学物质，然后在加热时将这些化学物质释放到室内。 然后以这种方式捕获然后释放的化学品被携带到诸如便携式离子迁移谱仪的便携式化学检测装置。 在优选实施例中，用于将样品抽入腔室的装置包括可逆风扇，其在相反方向操作时产生背压，其有利于当加热筛网时捕获的目标化学物质进入腔室。 屏幕可以在加热之前直接放置在检测器的前面，以提高检测能力。
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公开(公告)号：US08429987B1
公开(公告)日：2013-04-30
申请号：US12636852
申请日：2009-12-14
IPC分类号： G01N1/24
CPC分类号： G01N1/22 , G01N2001/024 , G01N2001/028 , G01N2001/2241
摘要： A portal, system and method for screening an object for a target substance is provided. The portal includes an inflatable bladder expandable to form a test space for receiving the object and a plurality of nozzles positioned about the inflatable bladder. The nozzles are in fluid communication with a fluid source for directing air over the object whereby samples are removed from the object for examination. A collector is operatively connected to the inflatable bladder for collecting the samples removed from the object. A detector is operatively connected to the collector for examining the removed samples for the presence of the target substance. At least one preconcentrator may be operatively connected to the collector for concentrating the samples collected thereby.
摘要翻译： 提供了用于筛选目标物质的物体的门户，系统和方法。 入口包括可膨胀的囊，以形成用于接收物体的测试空间和围绕可充气囊定位的多个喷嘴。 喷嘴与流体源流体连通，用于将空气引导到物体上，从而将样品从物体中取出以供检查。 收集器可操作地连接到可膨胀囊，用于收集从物体移除的样品。 检测器可操作地连接到收集器，用于检查去除的样品中是否存在目标物质。 至少一个预浓缩器可以可操作地连接到收集器，用于浓缩由此收集的样品。
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公开(公告)号：US06345545B1
公开(公告)日：2002-02-12
申请号：US09594215
申请日：2000-06-14
IPC分类号： G01N100
CPC分类号： G01N1/405 , G01N1/2214 , G01N1/40 , G01N2001/022 , G01N2030/008 , G01N2030/122
摘要： A device for concentrating particles from a high volume gas stream and delivering the particles for detection in a low volume gas stream includes first and second preconcentrators. The first preconcentrator has a first structure for retaining particles in a first gas flow path through which a first gas flows at a relatively high volume, valves for selectively stopping the first gas flow; and a second gas flow path through which gas flows at an intermediate flow volume for moving particles from the first structure. The second preconcentrator includes a second structure for retaining particles in the second gas flow path; a valve for selectively stopping the second gas flow; and a third gas flow path through which gas flows at a low volume for moving particles from the second structure to a detector. Each of the particle retaining structures is preferably a metal screen that may be resistively heated by application of an electric potential to release the particles.
摘要翻译： 用于从大体积气流中浓缩颗粒并将颗粒输送到低体积气流中进行检测的装置包括第一和第二预浓缩器。 第一预浓缩器具有第一结构，用于保持第一气体流路中的颗粒，第一气体以相对高的体积流过第一气体流量，用于选择性地停止第一气体流; 以及气体以中间流量流动的第二气体流动路径，用于从第一结构移动颗粒。 第二预浓缩器包括用于将颗粒保持在第二气体流动路径中的第二结构; 用于选择性地停止第二气流的阀; 以及气体以低体积流动的第三气体流动路径，用于将颗粒从第二结构移动到检测器。 每个颗粒保持结构优选是可以通过施加电位来电阻加热以释放颗粒的金属屏。
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公开(公告)号：US06334365B1
公开(公告)日：2002-01-01
申请号：US09734622
申请日：2000-12-11
IPC分类号： G01N100
CPC分类号： G01N1/2214 , G01N2001/024 , G01N2001/2223
摘要： A portal apparatus for screening persons or objects for the presence of trace amounts of target substances such as explosives, narcotics, radioactive materials, and certain chemical materials. The portal apparatus can have a one-sided exhaust for an exhaust stream, an interior wall configuration with a concave-shape across a horizontal cross-section for each of two facing sides to result in improved airflow and reduced washout relative to a configuration with substantially flat parallel sides; air curtains to reduce washout; ionizing sprays to collect particles bound by static forces, as well as gas jet nozzles to dislodge particles bound by adhesion to the screened person or object. The portal apparatus can be included in a detection system with a preconcentrator and a detector.
摘要翻译： 用于筛选人员或物体以存在痕量目标物质如爆炸物，麻醉剂，放射性物质和某些化学物质的入口设备。 入口设备可以具有用于排气流的单侧排气，对于两个相对侧中的每一个具有横向横向横截面的凹形的内壁构造，以导致改善的气流并相对于基本上构造的构造减少冲洗 平行平行边; 气帘减少冲洗; 电离喷雾以收集由静力结合的颗粒，以及气体喷嘴以移除通过粘附到被筛选的人或物体的颗粒。 入口装置可以包含在具有预浓缩器和检测器的检测系统中。
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