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    • 1. 发明申请
    • MAGNETIC SENSOR DEVICE WITH SUPPRESSION OF SPURIOUS SIGNAL COMPONENTS
    • 具有抑制SPUIOUS信号组件的磁传感器装置
    • WO2008075262A3
    • 2008-08-21
    • PCT/IB2007055057
    • 2007-12-12
    • KONINKL PHILIPS ELECTRONICS NVKAHLMANN JOSEPHUS A H MDE BOER BART MJANSEN THEODORUS P H GVEEN JEROEN
    • KAHLMANN JOSEPHUS A H MDE BOER BART MJANSEN THEODORUS P H GVEEN JEROEN
    • G01N33/543G01R33/09G01R33/12
    • G01R33/093B82Y25/00G01R33/1269
    • The invention relates to a magnetic sensor device for the determination of magnetized particles (3) which comprises a magnetic field generator (1, 1') (e.g. a conductor wire) that is driven with an excitation current (I I ) of a first frequency (f 1 ), and a magnetic sensor element (2) (e.g. a GMR resistance), that is driven with a sensor current (I 2 ) of a second frequency (f 2 ) for generating measurement signals (U GMR ). A preprocessed signal (uf) is then generated from the measurement signal (U GMR ) that comprises a predetermined frequency (?f), and an evaluation unit (10) separates from this preprocessed signal a spurious component that does not depend on the presence of magnetized particles (3) in the sample chamber. The spurious component (U Q ) may particularly be caused by self-magnetization (H 2 ) of the magnetic sensor element (2) in combination with parasitic (capacitive or inductive) cross-talk. Furthermore, an unknown, variable phase-shift (f SP ) in the preprocessed signal (u f ) may be determined by varying the ratio between the spurious component and a particle-dependent target component. This variation may for example be achieved if, in an optimization stage (OS), the excitation current (I 1 ) is conducted through a bypass resistor (R, R') and/or if an additional capacitor is introduced between the magnetic field generator and the magnetic sensor element. The determined phase shift can then be used to adjust the phase of a demodulation signal (u dem ) such that the spurious component is suppressed.
    • 本发明涉及一种用于确定磁化颗粒(3)的磁传感器装置,其包括用激励电流(I I')驱动的磁场发生器(1,1')(例如导线) 第一频率(f 1> 1)的磁传感器元件(2)(例如GMR电阻),以及传感器电流(I 2 2 / >)用于产生测量信号(U SUB GMR)的第二频率(f 2> 2)。 然后,从包括预定频率(Δf)的测量信号(U SUB GMR)产生预处理信号(uf),并且评估单元(10)从该预处理信号中分离出杂散分量, 不依赖于样品室中磁化颗粒(3)的存在。 杂散分量(U SUB)可以特别地由磁传感器元件(2)的自磁化(H 2 2 N)与寄生(电容或电感)组合引起。 相声。 此外,预处理信号(u> f>)中的未知的可变相移(f SP SP)可以通过改变杂散分量和粒子 - 依赖目标成分。 例如,如果在优化级(OS)中通过旁路电阻(R,R')传导激励电流(I,1')和/或如果附加电容器 介于磁场发生器和磁传感器元件之间。 然后可以使用所确定的相移来调整解调信号的相位,使得杂散分量被抑制。
    • 3. 发明申请
    • DEVICE FOR MEASURING A FLUID MENISCUS
    • 用于测量流体肉汁的装置
    • WO2010061300A1
    • 2010-06-03
    • PCT/IB2009/054758
    • 2009-10-27
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.DE BOER, Bart, M.DE HOOG, Thomas, J.JANSEN, Theodorus, P., H., G.
    • DE BOER, Bart, M.DE HOOG, Thomas, J.JANSEN, Theodorus, P., H., G.
    • G01B7/00G02B3/14
    • G01B7/28G01R27/2605G02B26/005
    • The invention relates to a device (102) arranged for measuring a geometry of a fluid meniscus (132). The device comprises a fluid chamber (104) storing a first electrically conductive fluid (128) and a second electrically insulating fluid (324). The fluids are mutually immiscible and define a fluid meniscus (132) in between them. Furthermore a main electrowetting electrode (118) and auxiliary electrowetting electrodes (120, 122, 124, 126) are provided for controlling the geometry of the fluid meniscus. Hereto a voltage source (134) for providing a voltage between the main electrowetting electrode and the auxiliary electrowetting electrodes is comprised, as well as a measurement circuit (144) for separately measuring capacitances between the main electrowetting electrode and at least two of the auxiliary electrowetting electrodes. For this purpose the measurement circuit comprises a multiplexer for demodulating a signal indicative for said capacitances. The invention further relates to a method for measuring a fluid meniscus.
    • 本发明涉及一种被设置用于测量流体弯液面(132)的几何形状的装置(102)。 该装置包括存储第一导电流体(128)和第二电绝缘流体(324)的流体室(104)。 流体是相互不混溶的并且在它们之间限定流体弯液面(132)。 此外,提供主电润湿电极(118)和辅助电润湿电极(120,122,124,126)以控制流体弯液面的几何形状。 包括用于在主电润湿电极和辅助电润湿电极之间提供电压的电压源(134),以及用于分别测量主电润湿电极与至少两个辅助电润湿之间的电容的测量电路(144) 电极。 为此,测量电路包括用于解调指示所述电容的信号的多路复用器。 本发明还涉及一种用于测量流体弯液面的方法。
    • 4. 发明申请
    • MAGNETIC SENSOR DEVICE WITH SUPPRESSION OF SPURIOUS SIGNAL COMPONENTS
    • 磁性传感器设备,抑制了各种各样的信号组件
    • WO2008075262A2
    • 2008-06-26
    • PCT/IB2007/055057
    • 2007-12-12
    • KONINKLIJKE PHILIPS ELECTRONICS N. V.KAHLMANN, Josephus, A., H., M.DE BOER, Bart, M.JANSEN, Theodorus, P., H., G.VEEN, Jeroen
    • KAHLMANN, Josephus, A., H., M.DE BOER, Bart, M.JANSEN, Theodorus, P., H., G.VEEN, Jeroen
    • G01N33/543G01R33/09G01R33/12
    • G01R33/093B82Y25/00G01R33/1269
    • The invention relates to a magnetic sensor device for the determination of magnetized particles (3) which comprises a magnetic field generator (1, 1') (e.g. a conductor wire) that is driven with an excitation current (I I ) of a first frequency (f 1 ), and a magnetic sensor element (2) (e.g. a GMR resistance), that is driven with a sensor current (I 2 ) of a second frequency (f 2 ) for generating measurement signals (U GMR ). A preprocessed signal (uf) is then generated from the measurement signal (U GMR ) that comprises a predetermined frequency (Δf), and an evaluation unit (10) separates from this preprocessed signal a spurious component that does not depend on the presence of magnetized particles (3) in the sample chamber. The spurious component (U Q ) may particularly be caused by self-magnetization (H 2 ) of the magnetic sensor element (2) in combination with parasitic (capacitive or inductive) cross-talk. Furthermore, an unknown, variable phase-shift (φ SP ) in the preprocessed signal (u f ) may be determined by varying the ratio between the spurious component and a particle-dependent target component. This variation may for example be achieved if, in an optimization stage (OS), the excitation current (I 1 ) is conducted through a bypass resistor (R, R') and/or if an additional capacitor is introduced between the magnetic field generator and the magnetic sensor element. The determined phase shift can then be used to adjust the phase of a demodulation signal (u dem ) such that the spurious component is suppressed.
    • 本发明涉及一种用于确定磁化粒子(3)的磁性传感器装置,其包括磁场发生器(1,1')(例如导线),该磁场发生器(1,1')由激励电流 (f 1)的第一频率(f 1)和磁传感器元件(2)(例如GMR电阻)之间的差值(I 1) (f 2)的第一频率(f 2(i)),以产生测量信号(U GMR)。 然后从包括预定频率(Δf)的测量信号(U G)中产生预处理信号(u f),并且评估单元(10)从该预处理信号中分离出一个假部件 不依赖于样品室中存在磁化颗粒(3)。 杂散分量(UQ)尤其可以由磁传感器元件(2)的自磁化(H 2)与寄生(电容或电感) 相声。 此外,可以通过改变杂散分量与粒子间相关性之间的比率来确定预处理信号中的未知的可变相移(φSP) 依赖目标组件。 例如,如果在优化阶段(OS)中激励电流(I 1)通过旁路电阻器(R,R')传导和/或如果附加电容器 被引入到磁场发生器和磁传感器元件之间。 然后可以使用所确定的相移来调整解调信号的相位(u dem),使得杂散分量被抑制。
    • 8. 发明申请
    • SENSOR DEVICE FOR TARGET PARTICLES IN A SAMPLE
    • 传感器装置在样品中的目标颗粒
    • WO2009053902A3
    • 2009-12-10
    • PCT/IB2008054329
    • 2008-10-21
    • KONINKL PHILIPS ELECTRONICS NVVERSCHUREN COEN AKAHLMAN JOSEPHUS A H MIMMINK ALBERT H JMEGENS MISCHAVEEN JEROENDE BOER BART MJANSEN THEODORUS P H G
    • VERSCHUREN COEN AKAHLMAN JOSEPHUS A H MIMMINK ALBERT H JMEGENS MISCHAVEEN JEROENDE BOER BART MJANSEN THEODORUS P H G
    • G01N15/06
    • G01N15/06G01N15/0656G01N2015/0693G01R33/1269
    • The invention relates to a sensor device(100) and a method for the determination of the amount of target particles(1) at a contact surface(112) adjacent to a sample chamber(2). Target particles(1) in the sample chamber are detected by a sensor element(SE) and at least one corresponding sensor-signal (s, s') is provided. An evaluation unit(EU) then determines the amount of target particles(1) in a first zone(Z1) immediately at the contracts surface(112) and a second zone(Z2) a distance(z) away from the contact surface based on this sensor-signal. In an optical measurement approach, frustrated total internal reflection taking place under different operating conditions (e.g. wavelength, angle of incidenceq) may be used to extract information about the first and second zones(Z1, Z2). In a magnetic measurement approach, different magnetic excitation fields may be used to excite magnetic target particles differently inthe first and second zone(Z2). Moreover, the temporalcourse of a sensor-signal(s, s') can be evaluated, particularly with respect to stochastic movements ofthe target particles(1).
    • 本发明涉及一种传感器装置(100)和用于确定在与样品室(2)相邻的接触表面(112)处的目标颗粒(1)的量的方法。 通过传感器元件(SE)检测样品室中的目标颗粒(1),并提供至少一个对应的传感器信号(s,s')。 然后,评估单元(EU)基于紧接表面(112)立即确定第一区域(Z1)中的目标颗粒(1)的数量和远离接触表面的距离(z)的第二区域(Z2),基于 这个传感器信号。 在光学测量方法中,可以使用在不同操作条件(例如,波长,入射角q)处发生的沮丧的全内反射来提取关于第一和第二区域(Z1,Z2)的信息。 在磁测量方法中,可以使用不同的磁激励场来在第一和第二区(Z2)中不同地激励磁性目标颗粒。 此外,可以评估传感器信号(s,s')的时间,特别是关于目标颗粒(1)的随机运动。
    • 9. 发明申请
    • MAGNETIC SENSOR DEVICE WITH ROBUST SIGNAL PROCESSING
    • 具有鲁棒信号处理的磁传感器装置
    • WO2008075274A2
    • 2008-06-26
    • PCT/IB2007/055114
    • 2007-12-14
    • KONINKLIJKE PHILIPS ELECTRONICS N. V.VEEN, JeroenJANSEN, Theodorus, P., H., G.DE BOER, Bart, M.KAHLMAN, Josephus, A., H., M.
    • VEEN, JeroenJANSEN, Theodorus, P., H., G.DE BOER, Bart, M.KAHLMAN, Josephus, A., H., M.
    • G01N33/543G01R33/09G01R33/12
    • G01R33/093B82Y25/00G01R33/1269
    • The invention relates to a magnetic sensor device (100) comprising a magnetic field generator (1) driven with an excitation current of a first frequency (f 1 ) and a magnetic sensor element (e.g. a GMR sensor (2)) driven with a sensor current (I 2 ) of a second frequency (f 2 ) for measuring reaction fields (H B ) generated by magnetized particles (3). In an associated evaluation unit (10), a reference component (u Q ) of the measurement signal (u GMR ) is separated that depends on the excitation current (I 1 ) and the sensor current (I 2 ) but not on the presence of magnetized particles (3). The reference component (u Q ) may particularly be produced by a combination of the self- magnetization (H 2 ) of the magnetic sensor element (2) and cross-talk related currents. The reference component (u Q ) may be isolated based on its phase with respect to a particle-dependent component of the measurement signal (u GMR ) or based on its scaling with one of the current frequencies. Monitoring of the reference component (u Q ) reveals variations in operating conditions, for example in the sensor gain, that can be used to calibrate the measurement results.
    • 本发明涉及一种磁传感器装置(100),其包括用第一频率(f 1 1)的激励电流驱动的磁场发生器(1)和磁传感器元件(例如,GMR传感器 2)),用于产生用于测量产生的反应场(H B B)的第二频率(f 2 S 2)的传感器电流(I 2> 2 <! - SIPO GMR )的参考分量(u> QMR)被分离,该参考分量取决于激励电流(I 1)和传感器电流(I 2 2),但不存在磁化颗粒(3)。 可以特别地通过磁传感器元件(2)的自磁化(H 2 2 N 2)和串扰相关的组合来产生参考分量(u> Q) 电流。 可以基于其相对于测量信号(u> GMR>的粒子相关分量)的相位或基于其与...的比例缩放来隔离参考分量(u> Q 当前频率之一。 参考部件(u> Q )的监视显示了可用于校准测量结果的操作条件的变化,例如传感器增益。