公开(公告)号：US07135870B2

公开(公告)日：2006-11-14

申请号：US11119556

申请日：2005-05-02

申请人： Kim Mohajer ,  Edward McChesney Browne ,  Abbas Khajeh

发明人： Kim Mohajer ,  Edward McChesney Browne ,  Abbas Khajeh

IPC分类号： G01R27/04

CPC分类号： G01N22/00 ,  G01N33/2847 ,  G01R27/22

摘要： A method and apparatus are disclosed for determining the concentration of individual components within a fluid mixture by determining the permittivity of the individual components. The method and apparatus use a reference sensor and at least one measurement sensor positioned inside the same sensor device that is immersed in the fluid mixture to be measured. Signals, such as radio frequency or microwave, are sequentially transmitted at multiple, known, constant frequencies to and reflected from both the reference and measurement sensor(s). Permittivities of the individual components are determined from these transmitted and reflected signals and information about the concentration of the individual fluids and other compounds within the fluid mixture and the density of the fluid mixture are produced. Repetitive sampling and processing of these signals allow determination and real-time monitoring of the concentration of individual components within a mixture of fluids. The present invention provides self-calibration, accurate frequency maintenance and self-selection of an operating frequency range.

摘要翻译： 公开了一种用于通过确定各个部件的介电常数来确定流体混合物内各个部件的浓度的方法和装置。 该方法和装置使用参考传感器和位于同一传感器装置内部的至少一个测量传感器，该传感器装置浸没在要测量的流体混合物中。 诸如射频或微波之类的信号以多个已知的恒定频率被顺序传送到参考和测量传感器两者并从其反射。 根据这些透射和反射的信号以及关于流体混合物内的各种流体和其它化合物的浓度的信息以及流体混合物的密度产生单个组分的介电常数。 重复采样和处理这些信号可以确定和实时监测流体混合物内各个组分的浓度。 本发明提供工作频率范围的自校准，精确的频率维持和自选。

公开(公告)号：US20050264302A1

公开(公告)日：2005-12-01

申请号：US11119556

申请日：2005-05-02

申请人： Kim Mohajer ,  Edward Browne ,  Abbas Khajeh

发明人： Kim Mohajer ,  Edward Browne ,  Abbas Khajeh

IPC分类号： G01N22/00 ,  G01N30/62 ,  G01N30/95 ,  G01N33/20 ,  G01N33/28 ,  G01N37/00 ,  G01R27/08 ,  G01R27/22 ,  G01R27/26 ,  G01R27/32

CPC分类号： G01N22/00 ,  G01N33/2847 ,  G01R27/22

摘要： A method and apparatus are disclosed for determining the concentration of individual components within a fluid mixture by determining the permittivity of the individual components. The method and apparatus use a reference sensor and at least one measurement sensor positioned inside the same sensor device that is immersed in the fluid mixture to be measured. Signals, such as radio frequency or microwave, are sequentially transmitted at multiple, known, constant frequencies to and reflected from both the reference and measurement sensor(s). Permittivities of the individual components are determined from these transmitted and reflected signals and information about the concentration of the individual fluids and other compounds within the fluid mixture and the density of the fluid mixture are produced. Repetitive sampling and processing of these signals allow determination and real-time monitoring of the concentration of individual components within a mixture of fluids. The present invention provides self-calibration, accurate frequency maintenance and self-selection of an operating frequency range.

摘要翻译： 公开了一种用于通过确定各个部件的介电常数来确定流体混合物内各个部件的浓度的方法和装置。 该方法和装置使用参考传感器和位于同一传感器装置内部的至少一个测量传感器，该传感器装置浸没在要测量的流体混合物中。 诸如射频或微波之类的信号以多个已知的恒定频率被顺序传送到参考和测量传感器两者并从其反射。 根据这些透射和反射的信号以及关于流体混合物内的各种流体和其它化合物的浓度的信息以及流体混合物的密度产生单个组分的介电常数。 重复采样和处理这些信号可以确定和实时监测流体混合物内各个组分的浓度。 本发明提供工作频率范围的自校准，精确的频率维持和自选。