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    Magnetic Sensor Device With Different Internal Operating Frequencies
    3.
    发明申请
    Magnetic Sensor Device With Different Internal Operating Frequencies 审中-公开
    具有不同内部工作频率的磁传感器装置

    公开(公告)号：US20080246471A1

    公开(公告)日：2008-10-09

    申请号：US12089947

    申请日：2006-09-29

    申请人： Josephus Arnoldus Henricus Maria Kahlman ,  Jeroen Veen ,  Bart Michiel De Boer ,  Theodorus Petrus Henricus Gerardus Jansen

    发明人： Josephus Arnoldus Henricus Maria Kahlman ,  Jeroen Veen ,  Bart Michiel De Boer ,  Theodorus Petrus Henricus Gerardus Jansen

    IPC分类号： G01N15/06

    CPC分类号： G01R33/09 ,  B82Y25/00 ,  G01N15/0656 ,  G01N27/745 ,  G01R33/093 ,  G01R33/12 ,  G01R33/1269

    摘要： The invention relates to a magnetic sensor device (10) comprising wires (11, 13) for the generation of a magnetic field with a first frequency f1 a GMR sensor (12) operated with an input current of a second frequency f2, and a demodulator (26) operated at a third frequency f3. In order to avoid signal corruption by phase noise and to improve the signal-to-noise ratio, the first, second and third frequencies are derived by a supply unit (121) from a common reference frequency fref. Said derivation may for example be achieved with the help of digital frequency dividers. Furthermore, phase detectors (PD1, PD2) may be used in a feedback control loop to assure predetermined relations between the phases of the three frequencies. In another embodiment of the invention, the phase and/or amplitude of a model signal, which is used to process a desired signal component in the output of the sensor, is tracked by an adaptation algorithm, for example a gradient descent.

    摘要翻译： 本发明涉及一种磁传感器装置（10），其包括用于产生具有第一频率f 1的磁场的导线（11,13），GMR传感器（12）用输入电流 第二频率f 2 2和在第三频率f 3 3处操作的解调器（26）。 为了避免相位噪声的信号损坏并提高信噪比，第一，第二和第三频率由供电单元（121）从公共参考频率f ref 。 所述推导可以例如在数字分频器的帮助下实现。 此外，相位检测器（PD1，PD2）可以用在反馈控制环路中，以确保三个频率的相位之间的预定关系。 在本发明的另一个实施例中，用于处理传感器的输出中的期望信号分量的模型信号的相位和/或幅度由适应算法（例如梯度下降）来跟踪。

    MAGNETIC SENSOR DEVICE WITH ROBUST SIGNAL PROCESSING
    4.
    发明申请
    MAGNETIC SENSOR DEVICE WITH ROBUST SIGNAL PROCESSING 审中-公开
    具有鲁棒信号处理的磁传感器装置

    公开(公告)号：US20100060275A1

    公开(公告)日：2010-03-11

    申请号：US12518897

    申请日：2007-12-14

    申请人： Jeroen Veen ,  Theodorus Petrus Henricus Gerardus Jansen ,  Bart Michiel De Boer ,  Josephus Arnoldus Henricus Maria Kahlman

    发明人： Jeroen Veen ,  Theodorus Petrus Henricus Gerardus Jansen ,  Bart Michiel De Boer ,  Josephus Arnoldus Henricus Maria Kahlman

    IPC分类号： G01R33/12

    CPC分类号： G01R33/093 ,  B82Y25/00 ,  G01R33/1269

    摘要： The invention relates to a magnetic sensor device (100) comprising a magnetic field generator (1) driven with an excitation current of a first frequency (f1) and a magnetic sensor element (e.g. a GIVER sensor (2)) driven with a sensor current (I2) of a second frequency (f2) for measuring reaction fields (HB) generated by magnetized particles (3). In an associated evaluation unit (10), a reference component (uQ) of the measurement signal (uGMR) is separated that depends on the excitation current (I1) and the sensor current (I2) but not on the presence of magnetized particles (3). The reference component (uQ) may particularly be produced by a combination of the self-magnetization (H2) of the magnetic sensor element (2) and cross-talk related currents. The reference component (uQ) may be isolated based on its phase with respect to a particle-dependent component of the measurement signal (uGMR) or based on its scaling with one of the current frequencies. Monitoring of the reference component (uQ) reveals variations in operating conditions, for example in the sensor gain, that can be used to calibrate the measurement results.

    摘要翻译： 本发明涉及一种磁传感器装置（100），其包括用第一频率（f1）的激励电流驱动的磁场发生器（1）和由传感器电流驱动的磁传感器元件（例如GIVER传感器（2）） （I2），用于测量由磁化颗粒（3）产生的反应场（HB）的第二频率（f2）。 在相关联的评估单元（10）中，测量信号（uGMR）的参考分量（uQ）被分离，其取决于激励电流（I1）和传感器电流（I2），但不依赖于磁化颗粒（3 ）。 参考分量（uQ）可以特别地通过磁传感器元件（2）的自磁化（H2）和串扰相关电流的组合来产生。 参考分量（uQ）可以基于其相对于测量信号（uGMR）的粒子相关分量的相位或者基于其与当前频率之一的比例来隔离。 参考组件（uQ）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。

    MAGNETIC SENSOR DEVICE WITH SUPPRESSION OF SPURIOUS SIGNAL COMPONENTS
    5.
    发明申请
    MAGNETIC SENSOR DEVICE WITH SUPPRESSION OF SPURIOUS SIGNAL COMPONENTS 审中-公开
    具有抑制SPUIOUS信号组件的磁传感器装置

    公开(公告)号：US20100001722A1

    公开(公告)日：2010-01-07

    申请号：US12518890

    申请日：2007-12-12

    申请人： Josephus Arnoldus Henricus Maria Kahlman ,  Bart Michiel De Boer ,  Theodorus Petrus Henricus Gerardus Jansen ,  Jeroen Veen

    发明人： Josephus Arnoldus Henricus Maria Kahlman ,  Bart Michiel De Boer ,  Theodorus Petrus Henricus Gerardus Jansen ,  Jeroen Veen

    IPC分类号： G01R33/02

    CPC分类号： G01R33/093 ,  B82Y25/00 ,  G01R33/1269

    摘要： 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 (I1) of a first frequency (f1), and a magnetic sensor element (2) (e.g. a GMR resistance), that is driven with a sensor current (I2) of a second frequency (f2) for generating measurement signals (UGMR). A preprocessed signal (uf) is then generated from the measurement signal (UGMR) 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 (UQ) may particularly be caused by self-magnetization (H2) of the magnetic sensor element (2) in combination with parasitic (capacitive or inductive) cross-talk. Furthermore, an unknown, variable phase-shift (φSP) in the preprocessed signal (uf) 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 (I1) 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 (udem) such that the spurious component is suppressed.

    摘要翻译： 本发明涉及一种用于确定磁化颗粒（3）的磁传感器装置，该磁化颗粒包括由第一频率的激励电流（I1）驱动的磁场发生器（1,1'）（例如导线） f1）和由用于产生测量信号（UGMR）的第二频率（f2）的传感器电流（I2）驱动的磁传感器元件（2）（例如，GMR电阻）。 然后从包括预定频率（Deltaf）的测量信号（UGMR）生成预处理信号（uf），并且评估单元（10）从该预处理信号中分离出不依赖于磁化颗粒的存在的杂散分量 （3）。 杂散分量（UQ）可以特别地由磁传感器元件（2）与寄生（电容或电感）串扰的自磁化（H2）引起。 此外，预处理信号（uf）中的未知的可变相移（phiSP）可以通过改变杂散分量和粒子相关目标分量之间的比率来确定。 例如，如果在优化级（OS）中通过旁路电阻（R，R'）传导励磁电流（I1）和/或如果在磁场发生器和 磁传感元件。 然后可以使用所确定的相移来调整解调信号（udem）的相位，使得抑制杂散分量。

    MICROELECTRONIC SENSOR DEVICE FOR CONCENTRATION MEASUREMENTS
    6.
    发明申请
    MICROELECTRONIC SENSOR DEVICE FOR CONCENTRATION MEASUREMENTS 审中-公开
    用于浓度测量的微电子传感器装置

    公开(公告)号：US20090219012A1

    公开(公告)日：2009-09-03

    申请号：US12299698

    申请日：2007-04-24

    申请人： Jeroen Hans Nieuwenhuis ,  Hans Van Zon ,  Josephus Arnoldus Henricus Maria Kahlman ,  Jeroen Veen ,  Bart Michiel De Boer ,  Theodorus Petrus Henricus Gerardus Jansen

    发明人： Jeroen Hans Nieuwenhuis ,  Hans Van Zon ,  Josephus Arnoldus Henricus Maria Kahlman ,  Jeroen Veen ,  Bart Michiel De Boer ,  Theodorus Petrus Henricus Gerardus Jansen

    IPC分类号： G01N27/74

    CPC分类号： G01R33/093 ,  B82Y25/00 ,  G01N27/745 ,  G01R33/1269

    摘要： The invention relates to a method and a magnetic sensor device for the determination of the concentration of target particles (2) in a sample fluid, wherein the amount of the target particles (2) in a sensitive region (14) is observed by sampling measurement signals with associated sensor units (10a-10d). The target particles (2) may optionally be bound to binding sites (3) in the sensitive region, and a parametric binding curve, e.g. a Langmuir isotherm, may be fitted to the sampled measurement signals to determine the desired particle concentration in the sample. Moreover, parameters like the sampling rate and the size of the sensitive region (14) can be dynamically fitted during the ongoing sampling process to improve the signal-to-noise ratio. In another embodiment of the invention, single events corresponding to the movement of target particles into, out of, or within the sensitive region are detected and counted.

    摘要翻译： 本发明涉及一种用于确定样品流体中目标颗粒（2）的浓度的方法和磁传感器装置，其中通过采样测量观察敏感区域（14）中的目标颗粒（2）的量 信号与相关联的传感器单元（10a-10d）。 目标颗粒（2）可以任选地结合到敏感区域中的结合位点（3），参与结合曲线，例如， Langmuir等温线可以适应于采样的测量信号，以确定样品中所需的颗粒浓度。 此外，在持续采样过程中，可以动态拟合诸如采样率和敏感区域（14）的尺寸的参数，以提高信噪比。 在本发明的另一个实施例中，检测并计数与目标颗粒移动到敏感区域内部或之内的单个事件。

    SENSOR DEVICE FOR TARGET PARTICLES IN A SAMPLE
    8.
    发明申请
    SENSOR DEVICE FOR TARGET PARTICLES IN A SAMPLE 有权
    传感器装置在样品中的目标颗粒

    公开(公告)号：US20100259254A1

    公开(公告)日：2010-10-14

    申请号：US12738317

    申请日：2008-10-21

    申请人： Coen Adrianus Johannes Verschuren ,  Josephus Arnoldus Henricus Maria Kahlman ,  Albert Hendrik Jan Immink ,  Mischa Megens ,  Jeroen Veen ,  Bart Michiel De Boer ,  Theodorus Petrus Henricus Gerardus Jansen

    发明人： Coen Adrianus Johannes Verschuren ,  Josephus Arnoldus Henricus Maria Kahlman ,  Albert Hendrik Jan Immink ,  Mischa Megens ,  Jeroen Veen ,  Bart Michiel De Boer ,  Theodorus Petrus Henricus Gerardus Jansen

    IPC分类号： G01R33/02 ,  G01N33/00 ,  G01N21/55

    CPC分类号： G01N15/06 ,  G01N15/0656 ,  G01N2015/0693 ,  G01R33/1269

    摘要： 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 incidence) 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 in the first and second zone (Z2). Moreover, the temporal course of a sensor-signal (s, s′) can be evaluated, particularly with respect to stochastic movements of the target particles (1).

    摘要翻译： 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）下发生的沮丧的全内反射来提取关于第一和第二区（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）中不同地激励磁目标颗粒。 此外，可以评估传感器信号（s，s'）的时间过程，特别是关于目标颗粒（1）的随机运动。

    Sensor Device With Generator and Sensor Current Sources
    10.
    发明申请
    Sensor Device With Generator and Sensor Current Sources 审中-公开
    带发生器和传感器电流源的传感器装置

    公开(公告)号：US20080278156A1

    公开(公告)日：2008-11-13

    申请号：US12067316

    申请日：2006-09-12

    申请人： Bart Michiel De Boer ,  Theodorus Petrus Henricus Gerardus Jansen

    发明人： Bart Michiel De Boer ,  Theodorus Petrus Henricus Gerardus Jansen

    IPC分类号： G01R33/00

    CPC分类号： G01R33/093 ,  B82Y25/00 ,  G01R33/1269

    摘要： The invention relates to a magnetic sensor device (10) comprising wires (11, 13) for the generation of a magnetic field and a magnetic sensor element (12), for example a GMR (12), for sensing changes of the generated magnetic field caused by magnetic particles (2). The wires (11, 13) and the magnetic sensor element (12) are supplied with alternating currents (I1, I2) of high frequencies f1 and f2. Said frequencies are chosen such that their difference Δf=æf2−f1æ is low and lies in a range of thermal white noise above the 1/f noise of an amplifier (24) and below the 1/f noise of the GMR (12). In this way it is possible to use a high-frequency magnetic field while only low frequency signals have to be processed.

    摘要翻译： 本发明涉及一种磁传感器装置（10），其包括用于产生磁场的导线（11,13）和用于感测所产生的磁场的变化的磁传感器元件（12），例如GMR（12） 由磁性颗粒（2）引起。 电线（11,13）和磁性传感器元件（12）被提供有高频f 1和f 2的交流电流（I 1，I 2）。 所述频率被选择为使得它们的差值Deltaf = aef 2 -f 1 ae为低，并且位于高于放大器（24）的1 / f噪声并低于GMR的1 / f噪声的热白噪声范围（ 12）。 以这种方式，可以使用高频磁场，而只需要处理低频信号。