公开(公告)号：US20120012744A1

公开(公告)日：2012-01-19

申请号：US13242263

申请日：2011-09-23

申请人： Xiaoliang Wang ,  Jugal K. Agarwal ,  George John Chancellor ,  James Evanstad ,  Anthony E. Hase ,  Sreenath Avula ,  James E. Farnsworth ,  David A. Lieder

发明人： Xiaoliang Wang ,  Jugal K. Agarwal ,  George John Chancellor ,  James Evanstad ,  Anthony E. Hase ,  Sreenath Avula ,  James E. Farnsworth ,  David A. Lieder

IPC分类号： B01D59/44

CPC分类号： G01N15/0205 ,  G01N15/1459 ,  G01N2015/025

摘要： A system for measuring size segregated mass concentration of an aerosol. The system includes an electromagnetic radiation source with beam-shaping optics for generation of a beam of electromagnetic radiation, an inlet sample conditioner with adjustable cut-size that selects particles of a specific size range, and an inlet nozzle for passage of an aerosol flow stream. The aerosol flow stream contains particles intersecting the beam of electromagnetic radiation to define an interrogation volume, and scatters the electromagnetic radiation from the interrogation volume. The system also includes a detector for detection of the scattered electromagnetic radiation an integrated signal conditioner coupled to the detector and generating a photometric output, and a processor coupled with the conditioner for conversion of the photometric output and cut-size to a size segregated mass distribution.

摘要翻译： 用于测量气溶胶的尺寸分离质量浓度的系统。 该系统包括具有用于产生电磁辐射束的光束成形光学器件的电磁辐射源，可选择尺寸的入口样品调节器，其选择特定尺寸范围的颗粒，以及用于通过气溶胶流动流的入口喷嘴 。 气溶胶流流含有与电磁辐射束相交的颗粒，以限定询问体积，并散射来自询问体积的电磁辐射。 该系统还包括用于检测散射电磁辐射的检测器，耦合到检测器并产生测光输出的集成信号调节器，以及与调节器耦合的处理器，用于将光度输出和切割尺寸转换成尺寸分离的质量分布 。

公开(公告)号：US20100288921A1

公开(公告)日：2010-11-18

申请号：US12705398

申请日：2010-02-12

申请人： Xiaoliang Wang ,  Jugal K. Agarwal ,  George John Chancellor ,  James Evanstad ,  Anthony E. Hase ,  Sreenath Avula ,  James E. Farnsworth ,  David A. Lieder

发明人： Xiaoliang Wang ,  Jugal K. Agarwal ,  George John Chancellor ,  James Evanstad ,  Anthony E. Hase ,  Sreenath Avula ,  James E. Farnsworth ,  David A. Lieder

IPC分类号： B01D59/44

CPC分类号： G01N15/0205 ,  G01N15/1459 ,  G01N2015/025

摘要： A system for measuring size segregated mass concentration of an aerosol. The system includes an electromagnetic radiation source with beam-shaping optics for generation of a beam of electromagnetic radiation, an inlet sample conditioner with adjustable cut-size that selects particles of a specific size range, and an inlet nozzle for passage of an aerosol flow stream. The aerosol flow stream contains particles intersecting the beam of electromagnetic radiation to define an interrogation volume, and scatters the electromagnetic radiation from the interrogation volume. The system also includes a detector for detection of the scattered electromagnetic radiation an integrated signal conditioner coupled to the detector and generating a photometric output, and a processor coupled with the conditioner for conversion of the photometric output and cut-size to a size segregated mass distribution.

摘要翻译： 用于测量气溶胶的尺寸分离质量浓度的系统。 该系统包括具有用于产生电磁辐射束的光束成形光学器件的电磁辐射源，可选择尺寸的入口样品调节器，其选择特定尺寸范围的颗粒，以及用于通过气溶胶流动流的入口喷嘴 。 气溶胶流流含有与电磁辐射束相交的颗粒，以限定询问体积，并散射来自询问体积的电磁辐射。 该系统还包括用于检测散射电磁辐射的检测器，耦合到检测器并产生测光输出的集成信号调节器，以及与调节器耦合的处理器，用于将光度输出和切割尺寸转换成尺寸分离的质量分布 。

公开(公告)号：US08047055B2

公开(公告)日：2011-11-01

申请号：US12705398

申请日：2010-02-12

申请人： Xiaoliang Wang ,  Jugal K. Agarwal ,  George John Chancellor ,  James Evanstad ,  Anthony E. Hase ,  Sreenath Avula ,  James E. Farnsworth ,  David A. Lieder

发明人： Xiaoliang Wang ,  Jugal K. Agarwal ,  George John Chancellor ,  James Evanstad ,  Anthony E. Hase ,  Sreenath Avula ,  James E. Farnsworth ,  David A. Lieder

IPC分类号： B01D59/44 ,  G01N21/00 ,  B05C1/00

CPC分类号： G01N15/0205 ,  G01N15/1459 ,  G01N2015/025

摘要： A system for measuring size segregated mass concentration of an aerosol. The system includes an electromagnetic radiation source with beam-shaping optics for generation of a beam of electromagnetic radiation, an inlet sample conditioner with adjustable cut-size that selects particles of a specific size range, and an inlet nozzle for passage of an aerosol flow stream. The aerosol flow stream contains particles intersecting the beam of electromagnetic radiation to define an interrogation volume, and scatters the electromagnetic radiation from the interrogation volume. The system also includes a detector for detection of the scattered electromagnetic radiation an integrated signal conditioner coupled to the detector and generating a photometric output, and a processor coupled with the conditioner for conversion of the photometric output and cut-size to a size segregated mass distribution.

摘要翻译： 用于测量气溶胶的尺寸分离质量浓度的系统。 该系统包括具有用于产生电磁辐射束的光束成形光学器件的电磁辐射源，可选择尺寸的入口样品调节器，其选择特定尺寸范围的颗粒，以及用于通过气溶胶流动流的入口喷嘴 。 气溶胶流流含有与电磁辐射束相交的颗粒，以限定询问体积，并散射来自询问体积的电磁辐射。 该系统还包括用于检测散射电磁辐射的检测器，耦合到检测器并产生测光输出的集成信号调节器，以及与调节器耦合的处理器，用于将光度输出和切割尺寸转换成尺寸分离的质量分布 。

公开(公告)号：US5561515A

公开(公告)日：1996-10-01

申请号：US319660

申请日：1994-10-07

申请人： Peter P. Hairston ,  Frank D. Dorman ,  Gilmore J. Sem ,  Jugal K. Agarwal

发明人： Peter P. Hairston ,  Frank D. Dorman ,  Gilmore J. Sem ,  Jugal K. Agarwal

IPC分类号： G01N15/02 ,  G01P5/22 ,  G01P5/26 ,  G01P5/18 ,  G01N21/00 ,  G01P5/00

CPC分类号： G01P5/22 ,  G01P5/26 ,  G01N2015/0238

摘要： An aerodynamic particle size measuring device includes a laser energy source and beam splitting, shaping and polarizing optics for forming two parallel, peripherally overlapping beams. The beams are caused to intersect a gas stream perpendicular to the direction of gas flow, thus to form a measuring volume at the intersection of the beams and flow. Single particles are carried through the measuring volume with the gas flow, each particle scattering and extinguishing light according to the beam profile, as predetermined by the degree of beam overlap and the Gaussian intensity distribution of each beam. A photodetector, responsive either to scattered light or light extinction, generates a time-dependent voltage profile that tends to replicate the intensity profile. The resulting electrical signal is processed to determine an amplitude, set a threshold for minimally acceptable amplitudes, and to derive two negative-going zero crossings for an unambiguous time/velocity determination. Logic circuitry employs the threshold in combination with the zero crossings to reject velocity readings based on single trigger or coincidence events.

摘要翻译： 空气动力学粒度测量装置包括激光能量源和分束，成形和偏振光学器件，用于形成两个平行的外围重叠的光束。 使梁与垂直于气流方向的气流相交，从而在梁和流的交叉处形成测量体积。 单个颗粒通过气流被传送通过测量体积，每个颗粒根据束轮廓散射和熄灭光，如通过束重叠度和每个光束的高斯强度分布所预定的。 响应于散射光或光消失的光电检测器产生倾向于复制强度分布的时间依赖电压分布。 对所得到的电信号进行处理以确定振幅，设置最小可接受振幅的阈值，并且为明确的时间/速度确定导出两个负向零交叉。 逻辑电路采用阈值与零交叉结合，以基于单个触发或重合事件来拒绝速度读数。