公开(公告)号：US06778271B2

公开(公告)日：2004-08-17

申请号：US09378666

申请日：1999-08-20

申请人： David John Watson ,  Clive Patrick Ashley Catterall ,  Duncan Edward Stephenson

发明人： David John Watson ,  Clive Patrick Ashley Catterall ,  Duncan Edward Stephenson

IPC分类号： G01N1502

CPC分类号： G01N15/0211

摘要： A particle size distribution analysis apparatus comprising a sample measurement zone adapted to define a sample of particles, a light emitting means adapted to provide a source of light incident upon the sample measurement zone, and at least a first detection means adapted to measure light levels in the apparatus at particular scattering angles and output a signal to a computation means enabling the particle size distribution of particles contained within the sample to be determined, wherein the computation means is adapted, in use, to calculate a particle size distribution taking into account reflections by the measurement zone of light scattered off the particles.

摘要翻译： 一种粒度分布分析装置，包括适于限定颗粒样本的样品测量区域，适于提供入射在样品测量区域上的光源的发光装置，以及至少第一检测装置， 该设备以特定的散射角度输出信号到计算装置，使得能够确定样品中包含的颗粒的粒度分布，其中计算装置在使用中适于计算考虑到反射的粒度分布 测量区域的光散射出粒子。

公开(公告)号：US06639671B1

公开(公告)日：2003-10-28

申请号：US10087491

申请日：2002-03-01

申请人： Benjamin Y. H. Liu

发明人： Benjamin Y. H. Liu

IPC分类号： G01N1502

CPC分类号： G01N15/0266 ,  G01N15/0205 ,  G01N15/065 ,  G01N2001/2223

摘要： A wide range particle counter has sections which separately detect coarse and fine particles in an aerosol. The coarse particles are counted and sized in an optical particle counter. The fine particles are classified with a differential mobility analyzer to determine size and then passed through a vaporizer and condenser and also counted. Using the different sections permits counting and measuring a wide range of particle size in a single instrument with high accuracy and reliability.

摘要翻译： 广泛的颗粒计数器具有分开地检测气溶胶中的粗颗粒和细颗粒的部分。 在光学颗粒计数器中对粗颗粒进行计数和定尺寸。 细微颗粒用差示迁移率分析仪分类，以确定尺寸，然后通过蒸发器和冷凝器，并计数。 使用不同的部分允许在单个仪器中以高精度和可靠性计量和测量各种粒径。

公开(公告)号：US06636307B2

公开(公告)日：2003-10-21

申请号：US09852964

申请日：2001-05-10

申请人： Kazuo Ichijo

发明人： Kazuo Ichijo

IPC分类号： G01N1502

CPC分类号： G01N15/14 ,  G01N2015/1447

摘要： A light scattering type particle detector in which the S/N ratio is improved includes a particle detecting region D which is formed by irradiating laser light La on sample fluid and a light receiving array 5 which receives scattering light Ls due to particles which pass through the particle detecting region. The light receiving array 5 is formed to be circular by arranging a plurality of photoelectric converters Pd1-Pdn in a plane alignment. The particle detector also includes an adder 6 which adds the output from the plurality of the photoelectric converters Pd1-Pdn.

摘要翻译： 其中S / N比改善的光散射型粒子检测器包括通过在样品流体上照射激光La而形成的粒子检测区域D，以及由于通过该粒子的颗粒而接收散射光Ls的光接收阵列5 粒子检测区域D.光接收阵列5通过以平面取向布置多个光电转换器Pd1-Pdn而形成为圆形。 粒子检测器还包括加法器6，其将来自多个光电转换器Pd1-Pdn的输出相加。

公开(公告)号：US06546793B2

公开(公告)日：2003-04-15

申请号：US10102439

申请日：2002-03-19

申请人： Barry Philip Hudson

发明人： Barry Philip Hudson

IPC分类号： G01N1502

CPC分类号： C04B20/0076 ,  B28B17/02 ,  C04B2111/00198 ,  G01N33/383 ,  C04B28/02 ,  C04B40/0032

摘要： A method for selecting proportions of aggregate for incorporation into concrete comprises several steps. First, a maximum aggregate size for a specific application is determined. A sample of the maximum size aggregate is loose poured into a container. The percentage voids in that sample is then calculated. An amount of smaller sized aggregate equal to approximately the volume of percentage voids calculated earlier is added to the sample until a reduced volume of voids in the mixed sample is achieved. Finally, the amounts of aggregate determined to have the reduced volume of voids in the mixed sample are used in a concrete mixture.

公开(公告)号：US06384915B1

公开(公告)日：2002-05-07

申请号：US09050570

申请日：1998-03-30

申请人： Matthew Everett ,  Billy W. Colston ,  Luiz B. Da Silva ,  Dennis Matthews

发明人： Matthew Everett ,  Billy W. Colston ,  Luiz B. Da Silva ,  Dennis Matthews

IPC分类号： G01N1502

CPC分类号： A61B5/6852 ,  A61B5/0066 ,  A61B5/0084

摘要： A guidance and viewing system based on multiplexed optical coherence domain reflectometry is incorporated into a catheter, endoscope, or other medical device to measure the location, thickness, and structure of the arterial walls or other intra-cavity regions at discrete points on the medical device during minimally invasive medical procedures. The information will be used both to guide the device through the body and to evaluate the tissue through which the device is being passed. Multiple optical fibers are situated along the circumference of the device. Light from the distal end of each fiber is directed onto the interior cavity walls via small diameter optics (such as gradient index lenses and mirrored corner cubes). Both forward viewing and side viewing fibers can be included. The light reflected or scattered from the cavity walls is then collected by the fibers and multiplexed at the proximal end to the sample arm of an optical low coherence reflectometer. The system may also be implemented in a nonmedical inspection device.

摘要翻译： 基于复合光学相干畴反射测量的引导和观察系统被并入到导管，内窥镜或其他医疗装置中，以测量医疗装置上的离散点处的动脉壁或其它腔内区域的位置，厚度和结构 在微创医疗程序中。 该信息将用于引导装置穿过身体并评估装置通过的组织。 多个光纤沿着设备的圆周设置。 来自每根纤维的远端的光通过小直径光学器件（例如梯度折射率透镜和镜像角立方体）被引导到内腔壁上。 可以包括前视和侧视纤维。 然后从空腔壁反射或散射的光被纤维收集，并在近端多路复用到光学低相干反射计的样品臂。 该系统还可以在非医疗检查装置中实现。

公开(公告)号：US06252658B1

公开(公告)日：2001-06-26

申请号：US09415152

申请日：1999-10-08

申请人： Yoshiaki Togawa ,  Tatsuo Igushi ,  Toshiya Ito ,  Yukio Sakai

发明人： Yoshiaki Togawa ,  Tatsuo Igushi ,  Toshiya Ito ,  Yukio Sakai

IPC分类号： G01N1502

CPC分类号： G01N15/0211 ,  G01N2021/4711

摘要： A particle size distribution measuring apparatus includes a source of laser light for providing a laser beam to a sample cell that can hold a sample to be measured. A condenser lens converges the laser beam towards the sample cell along an optical axis. The position on the other side of the sample cell is a ring detector unit that can be aligned with the optical axis to measure light intensity at relatively small scattering angles from contact with particles in the sample cell. An array of detectors can be operatively positioned on a substrate with appropriate amplifying multiplying and analog to digital conversion capacity for measuring light intensity at relatively large scatter angles. The outputs of the ring detector unit and the array of detectors can be used to determine the particle size distribution of particles in the sample.

摘要翻译： 粒度分布测量装置包括用于向可以容纳待测样品的样品池提供激光束的激光源。 聚光透镜将激光束沿着光轴会聚到样品池。 样品池的另一侧的位置是可以与光轴对准的环形探测器单元，以便在与样品池中的颗粒接触的相对小的散射角度下测量光强度。 检测器阵列可以可操作地定位在基板上，具有适当的放大倍数和模数转换能力，用于以较大的散射角测量光强度。 环检测器单元和检测器阵列的输出可用于确定样品中颗粒的粒度分布。

公开(公告)号：US06766702B2

公开(公告)日：2004-07-27

申请号：US09907071

申请日：2001-07-16

申请人： Jost Heintzenberg ,  Robert J. Charlson ,  Frank Stratmann ,  Manfred Wendisch ,  Sabine Wurzler

发明人： Jost Heintzenberg ,  Robert J. Charlson ,  Frank Stratmann ,  Manfred Wendisch ,  Sabine Wurzler

IPC分类号： G01N1502

CPC分类号： G01N15/0205 ,  G01N2015/0026 ,  G01N2015/003 ,  G01N2015/0046 ,  G01N2015/0053 ,  G01N2015/0092

摘要： The present invention relates to a method for investigating the behavior of particles or droplets in a gas-vapor mixture inside a flow device, which is useful for studying cloud dynamical and microphysical processes. The invention allows adjustment and/or control of the thermodynamic system parameters based on the observed behavior of an internal standard with known properties, thus achieving a well-defined vapor concentration and saturation field inside the flow device. By injecting particles or droplets to be investigated into this well defined flow device, and measuring the size of the particles or droplets, the activation and growth or shrinking behavior of the particles or droplets may be determined using a mathematical model of the fluid, thermodynamic, and chemical conditions of the flow device.

摘要翻译： 本发明涉及一种用于研究流动装置内的气体 - 蒸气混合物中的颗粒或液滴的行为的方法，其用于研究云动态和微物理过程。 本发明允许基于具有已知特性的内标的观察行为来调节和/或控制热力学系统参数，从而在流动装置内实现明确的蒸气浓度和饱和场。 通过将待研究的颗粒或液滴注入到这个良好限定的流动装置中，并测量颗粒或液滴的尺寸，可以使用流体，热力学的数学模型来确定颗粒或液滴的活化和生长或收缩行为， 和流动装置的化学条件。

公开(公告)号：US06704105B1

公开(公告)日：2004-03-09

申请号：US09909172

申请日：2001-07-18

申请人： Nancy L. Swanson ,  Barton D. Billard

发明人： Nancy L. Swanson ,  Barton D. Billard

IPC分类号： G01N1502

CPC分类号： G01N15/0205 ,  G01N21/47 ,  G01N21/49

摘要： A method for controlling both the scattering and absorption of electromagnetic waves. The method is based on prescribing the sizes of the particles that are suspended in a specified medium and a ratio of the refractive indices of the particles and the medium. This method can be used in applications that require maximizing or minimizing scattering of electromagnetic waves. The present method can also be used in applications that require maximizing or minimizing absorption of electromagnetic waves. Further, the invention provides control of backscattering (radar cross section) and, controlling any combination of scattering, absorption and backscattering of electromagnetic waves. Applications for the present method include stealth technology, friend or foe identification, and defensive screening.

公开(公告)号：US06639670B2

公开(公告)日：2003-10-28

申请号：US09966305

申请日：2001-12-18

申请人： Steven E Carpenter

发明人： Steven E Carpenter

IPC分类号： G01N1502

CPC分类号： G01N15/0205

摘要： A calibration system for a particle counter comprising a chamber, an air inlet pathway and a supply source of a liquid carrier. The air inlet pathway provides a gaseous substance into the chamber, and the liquid carrier passes through an array of thermal inkjet heads with a plurality of orifices to form a plurality of liquid particles before the liquid particles are entrained by a flow of the gaseous substance. A controller regulates the size, amount, and rate of liquid particles that exit the array.

摘要翻译： 一种用于颗粒计数器的校准系统，包括腔室，空气入口通道和液体载体的供应源。 空气入口通道将气体物质提供到室中，并且液体载体通过具有多个孔的热喷墨头阵列，以在液体颗粒被气态物质的流动夹带之前形成多个液体颗粒。 控制器调节离开阵列的液体颗粒的大小，数量和速率。

公开(公告)号：US06587200B1

公开(公告)日：2003-07-01

申请号：US09381367

申请日：2001-02-14

申请人： Ulrich Riebel ,  Udo Kraeuter

发明人： Ulrich Riebel ,  Udo Kraeuter

IPC分类号： G01N1502

CPC分类号： G01N15/02 ,  G01N2015/0222

摘要： The invention relates to a process for measuring particle size by measuring the attenuation of radiation after its passage through a defined measuring section containing a disperse system. According to the invention the temporally fluctuating transmission signal is recorded with variable time or spatial resolution. The transmission signals recorded then undergo a non-linear operation. The result of that non-linear operation is represented and analyzed as a spectral curve, i.e., as a function of the spatial or temporal resolution.

摘要翻译： 本发明涉及一种通过测量辐射在通过包含分散系统的限定测量部分之后的衰减来测量粒度的方法。 根据本发明，以可变的时间或空间分辨率记录时间波动的传输信号。 然后记录的传输信号经历非线性操作。 该非线性运算的结果被表示和分析为光谱曲线，即作为空间或时间分辨率的函数。