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    • 1. 发明授权
    • Method and arrangement for monitoring the bearing currents in an electrical machine
    • 用于监测电机轴承电流的方法和装置
    • US08610591B2
    • 2013-12-17
    • US13055818
    • 2009-07-21
    • Hans-Richard KretschmerArno SteckenbornOliver Theile
    • Hans-Richard KretschmerArno SteckenbornOliver Theile
    • G01R27/26
    • H02K11/20H02K11/40
    • The invention inter alia relates to a method for monitoring the bearing current of an electrical machine (10). An electrode (100) arranged at a distance (d) to a shaft and the shaft—due to the gap (S) between the electrode and the shaft—produce a measurement capacitance (C) and an electric shift current (i) which flows through the measurement capacitance when there is a temporal change of the voltage (Ug) applied between the shaft and the housing is measured. A measurement signal (Ms) indicating a bearing current flow is generated when the shift current or a measurement variable produced by the shift current meets a predetermined trigger criterion. Preferably, the electrode has a circular inner contour so that the gap is annular. The annular inner contour results in an error compensation in the case of a balance error of the shaft because the factor dC/dt remains at least substantially constant. Due to the contactless measurement of the shift current, no contact brushes for contacting the shaft are required. The method can be used irrespective of whether the bearings are insulated from the machine housing or not.
    • 本发明尤其涉及用于监测电机(10)的轴承电流的方法。 与电极和轴之间的间隙(S)距离(d)与轴和轴(距离)配置的电极(100)产生流过的测量电容(C)和电移动电流(i) 当测量在轴和壳体之间施加的电压(Ug)的时间变化时,通过测量电容。 当由换档电流产生的换档电流或测量变量满足预定的触发准则时,产生表示轴承电流的测量信号(Ms)。 优选地,电极具有圆形内轮廓,使得间隙是环形的。 由于因数dC / dt保持至少基本恒定,所以在轴的平衡误差的情况下,环形内轮廓导致误差补偿。 由于移位电流的非接触式测量,不需要接触轴的接触刷。 无论轴承是否与机器外壳绝缘,都可以使用该方法。
    • 4. 发明授权
    • Assembly for the optical illumination of a plurality of samples
    • 用于多个样品的光学照明的组件
    • US07227632B2
    • 2007-06-05
    • US10497905
    • 2002-12-04
    • Hans-Richard Kretschmer
    • Hans-Richard Kretschmer
    • G01N21/01
    • G01N21/6452
    • An assembly for an optical read out device for biochips, in which in a manner known per se an optical path of light that is emitted from the samples is evaluated by a CCD camera. For this purpose, the samples are illuminated by a light source, which e.g. stimulates fluorescence in the samples. According to the invention, the light source consists of luminescent, porous silicon. The latter can constitute the surface of a luminous disc, which extends parallel to an analysis plane that is formed by the sample carrier. This allows the light source to be directly connected to the sample carrier, obviating the need for complex optical systems for distributing the light evenly from a punctiform or linear light source to the samples. The light source is particularly cost-effective and the required light intensity is low. The luminous disc can be simply produced by the etching of a silicon substrate.
    • 用于生物芯片的光学读出装置的组件,其中以本身已知的方式,从样品发射的光的光路由CCD照相机评估。 为此,样品被光源照射, 刺激样品中的荧光。 根据本发明,光源由发光多孔硅组成。 后者可以构成平行于由样品载体形成的分析平面延伸的发光盘的表面。 这允许光源直接连接到样品载体,从而避免需要用于将光从点状或线性光源均匀地分布到样品的复杂光学系统。 光源特别具有成本效益,所需光强度低。 光盘可以通过蚀刻硅衬底简单地产生。
    • 7. 发明申请
    • METHOD AND ARRANGEMENT FOR MONITORING THE BEARING CURRENTS IN AN ELECTRICAL MACHINE
    • 用于监测电机轴承电流的方法和装置
    • US20110175631A1
    • 2011-07-21
    • US13055818
    • 2009-07-21
    • Hans-Richard KretschmerAron SteckenbornOliver Theile
    • Hans-Richard KretschmerAron SteckenbornOliver Theile
    • G01R27/26
    • H02K11/20H02K11/40
    • The invention inter alia relates to a method for monitoring the bearing current of an electrical machine (10). An electrode (100) arranged at a distance (d) to a shaft and the shaft—due to the gap (S) between the electrode and the shaft—produce a measurement capacitance (C) and an electric shift current (i) which flows through the measurement capacitance when there is a temporal change of the voltage (Ug) applied between the shaft and the housing is measured. A measurement signal (Ms) indicating a bearing current flow is generated when the shift current or a measurement variable produced by the shift current meets a predetermined trigger criterion. Preferably, the electrode has a circular inner contour so that the gap is annular. The annular inner contour results in an error compensation in the case of a balance error of the shaft because the factor dC/dt remains at least substantially constant. Due to the contactless measurement of the shift current, no contact brushes for contacting the shaft are required. The method can be used irrespective of whether the bearings are insulated from the machine housing or not.
    • 本发明尤其涉及用于监测电机(10)的轴承电流的方法。 与电极和轴之间的间隙(S)距离(d)与轴和轴(距离)配置的电极(100)产生流过的测量电容(C)和电移动电流(i) 当测量在轴和壳体之间施加的电压(Ug)的时间变化时,通过测量电容。 当由换档电流产生的换档电流或测量变量满足预定的触发准则时,产生表示轴承电流的测量信号(Ms)。 优选地,电极具有圆形内轮廓,使得间隙是环形的。 由于因数dC / dt保持至少基本恒定,所以在轴的平衡误差的情况下,环形内轮廓导致误差补偿。 由于移位电流的非接触式测量,不需要接触轴的接触刷。 无论轴承是否与机器外壳绝缘,都可以使用该方法。
    • 9. 发明申请
    • Assembly for the optical illumination of a plurality of samples
    • 用于多个样品的光学照明的组件
    • US20050043632A1
    • 2005-02-24
    • US10497905
    • 2002-12-04
    • Hans-Richard Kretschmer
    • Hans-Richard Kretschmer
    • G01N21/25G01N21/64A61B6/00
    • G01N21/6452
    • An assembly for an optical read out device for biochips, in which in a manner known per se an optical path of light that is emitted from the samples is evaluated by a CCD camera. For this purpose, the samples are illuminated by a light source, which e.g. stimulates fluorescence in the samples. According to the invention, the light source consists of luminescent, porous silicon. The latter can constitute the surface of a luminous disc, which extends parallel to an analysis plane that is formed by the sample carrier. This allows the light source to be directly connected to the sample carrier, obviating the need for complex optical systems for distributing the light evenly from a punctiform or linear light source to the samples. The light source is particularly cost-effective and the required light intensity is low. The luminous disc can be simply produced by the etching of a silicon substrate.
    • 用于生物芯片的光学读出装置的组件,其中以本身已知的方式,从样品发射的光的光路由CCD照相机评估。 为此,样品被光源照射, 刺激样品中的荧光。 根据本发明,光源由发光多孔硅组成。 后者可以构成平行于由样品载体形成的分析平面延伸的发光盘的表面。 这允许光源直接连接到样品载体,从而避免需要用于将光从点状或线性光源均匀地分布到样品的复杂光学系统。 光源特别具有成本效益,所需光强度低。 光盘可以通过蚀刻硅衬底简单地产生。