公开(公告)号：US20170045434A1

公开(公告)日：2017-02-16

申请号：US15212300

申请日：2016-07-18

Applicant: TECHNISCHE UNIVERSITAET DARMSTADT

Inventor： Cameron TROPEA ,  Walter SCHAEFER

IPC: G01N15/02

CPC classification number: G01N15/0211 ,  G01N15/0205 ,  G01N15/1434 ,  G01N21/4133 ,  G01N2015/0222 ,  G01N2015/0238 ,  G01N2015/1493 ,  G01N2201/0621

Abstract: A method is described for determining the size of a transparent particle (2), wherein the particle (2) is illuminated with light from a light source (6), wherein using a radiation detector (7) a time-resolved intensity curve of light from the light source (6) scattered on the particle (2) is measured at a preselectable scattering angle θs, wherein characteristic scattered light peaks are determined in the intensity curve, and wherein the size of the particle (2) is determined on the basis of the time difference between two scattered light peaks, characterized in that, with the help of two radiation detectors (7) or light sources (6), a first and a second time-resolved intensity curve of scattered light, scattered on the particle (2) in the forward direction, are measured; a transmission peak (12) and a reflection peak (11) are determined from the first intensity curve and from the second intensity curve; a first time difference between the transmission peaks (12) is determined, and a second time difference between the reflection peaks (11) is determined; a characteristic variable α is determined from the ratio of the first time difference and the second time difference; and a size determination is performed for the particles (2) for which the characteristic variable α corresponds to a preselectable value. (FIG. 3)

Abstract translation: 描述了一种用于确定透明颗粒（2）的尺寸的方法，其中用来自光源（6）的光照射颗粒（2），其中使用辐射检测器（7）将光的时间分辨强度曲线 以预选散射角度θs测量从散射在粒子（2）上的光源（6），其中在强度曲线中确定特征散射光峰，其中基于（2）的粒子尺寸确定 两个散射光峰之间的时间差的特征在于，借助于两个辐射检测器（7）或光源（6），分散在颗粒上的散射光的第一和第二时间分辨强度曲线（ 2）正向测量; 从第一强度曲线和第二强度曲线确定透射峰（12）和反射峰（11） 确定透射峰（12）之间的第一时间差，并且确定反射峰（11）之间的第二时间差; 根据第一时间差和第二时间差的比率确定特征变量α; 并且对于特征变量α对应于预选值的粒子（2）进行尺寸确定。 （图3）

公开(公告)号：US20170010197A1

公开(公告)日：2017-01-12

申请号：US15212314

申请日：2016-07-18

Applicant: TECHNISCHE UNIVERSITAET DARMSTADT

Inventor： Cameron TROPEA ,  Walter SCHAEFER

IPC: G01N15/02 ,  G01N15/14 ,  G01N21/41

CPC classification number: G01N15/0211 ,  G01N15/0205 ,  G01N15/1434 ,  G01N21/4133 ,  G01N2015/0222 ,  G01N2015/0238 ,  G01N2015/1493 ,  G01N2201/0621

Abstract: The invention relates to a method for determining the size d of a transparent particle, according to which method the particle is illuminated with light from a light source, a radiation detector measures a time-resolved intensity profile of light of the light source scattered by the particle, a reflection peak (10) and a refraction peak are determined in the intensity profile and the size d of the particle is determined based on a time difference between the reflection peak (10) and the refraction peak. The method according to the invention is characterized in that the time-resolved intensity profile is measured at a definable scattering angle θs, a first second-order refraction peak (11) and a second second-order refraction peak (12) having a mode different from that of the first refraction peak (11) being determined, a characteristic variable γ being determined as the ratio of a first time difference Δt01 between the reflection peak (10) and the first refraction peak (11) and of a second time difference Δt02 between the reflection peak (10) and the second refraction peak (11), and the size of only those particles being determined for which the characteristic variable γ corresponds to a definable value.

Abstract translation: 本发明涉及一种用于确定透明颗粒的尺寸d的方法，根据该方法，用来自光源的光照射该颗粒，辐射检测器测量由该光源散射的光源的时间分辨强度分布 粒子，反射峰（10）和折射峰在强度分布中确定，并且基于反射峰（10）和折射峰之间的时间差确定粒子的尺寸d。 根据本发明的方法的特征在于，以可定义的散射角θs，具有不同模式的第一二阶折射峰（11）和第二二阶折射峰（12）来测量时间分辨强度分布 从确定第一折射峰（11）的特性变量γ，确定为反射峰（10）和第一折射峰（11）之间的第一时间差Δt01与第二时间差Δt02之间的比率 在反射峰值（10）和第二折射峰值（11）之间，并且仅确定特征变量γ对应于可定义值的那些颗粒的尺寸。

公开(公告)号：US20140268142A1

公开(公告)日：2014-09-18

申请号：US14181789

申请日：2014-02-17

Applicant: TECHNISCHE UNIVERSITAET DARMSTADT

Inventor： Cameron TROPEA ,  Walter SCHAEFER

IPC: G01N15/02

CPC classification number: G01N15/0211 ,  G01N15/0205 ,  G01N15/1434 ,  G01N21/4133 ,  G01N2015/0222 ,  G01N2015/0238 ,  G01N2015/1493 ,  G01N2201/0621

Abstract: A method is described for determining the size of a transparent particle (2), wherein the particle (2) is illuminated with light from a light source (6), wherein using a radiation detector (7) a time-resolved intensity curve of light from the light source (6) scattered on the particle (2) is measured at a preselectable scattering angle θs, wherein characteristic scattered light peaks are determined in the intensity curve, and wherein the size of the particle (2) is determined on the basis of the time difference between two scattered light peaks, characterized in that, with the help of two radiation detectors (7) or light sources (6), a first and a second time-resolved intensity curve of scattered light, scattered on the particle (2) in the forward direction, are measured; a transmission peak (12) and a reflection peak (11) are determined from the first intensity curve and from the second intensity curve; a first time difference between the transmission peaks (12) is determined, and a second time difference between the reflection peaks (11) is determined; a characteristic variable α is determined from the ratio of the first time difference and the second time difference; and a size determination is performed for the particles (2) for which the characteristic variable α corresponds to a preselectable value.

Abstract translation: 描述了一种用于确定透明颗粒（2）的尺寸的方法，其中用来自光源（6）的光照射颗粒（2），其中使用辐射检测器（7）将光的时间分辨强度曲线 在预选的散射角＆s; s处测量从散射在颗粒（2）上的光源（6），其中在强度曲线中确定特征散射光峰，并且其中颗粒（2）的尺寸在 两个散射光峰之间的时间差的基础，其特征在于，借助于两个辐射检测器（7）或光源（6），分散在第一和第二时间分辨强度的散射光强度曲线 测量向前方向的颗粒（2）; 从第一强度曲线和第二强度曲线确定透射峰（12）和反射峰（11） 确定透射峰（12）之间的第一时间差，并且确定反射峰（11）之间的第二时间差; 根据第一时间差和第二时间差的比率确定特征变量α; 并且对于特征变量α对应于预选值的粒子（2）进行尺寸确定。