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    • 2. 发明授权
    • Sensor assembly for measuring current as a function of magnetic field
gradient
    • 用于测量电流的传感器组件作为磁场梯度的函数
    • US5621377A
    • 1997-04-15
    • US541823
    • 1995-10-10
    • Fritz DettmannUwe Loreit
    • Fritz DettmannUwe Loreit
    • G01R15/20G01R33/022G01R33/09H01L43/00
    • G01R15/205G01R33/022G01R33/09G01R33/096
    • To measure magnetic field gradients is difficult because sensor elements available for this have only a limited linearity range due to their sensitivity which is strongly dependent on the temperature and on auxiliary-field magnetic fields and furthermore this sensitivity has a significant sample dispersion. Whereas now the arrangement of a a Wheatstone bridge with magnetoresistive resistors is such that on the one hand two symmetrical areas are provided, in each area of which a resistor of a bridge branch is arranged, and that moveover all other building elements are also designed with a high degree of symmetry. With this a symmetrical temperature gradient is created in the sensor chip, which gradient does not influence the output signal of the bridge. A temperature-dependent zero-point drift does also not exist. The changeable resistor needed for trimming is as the single singular structural part directly arranged on the central axis and also does not interfere with the measurement. The arrangement is particularly suited for the potential-free measurement of the current intensities.
    • 为了测量磁场梯度是困难的,因为可用于其的传感器元件仅具有有限的线性范围,这是由于它们的灵敏度强烈依赖于温度和辅助场磁场,此外,该灵敏度具有显着的样品分散。 而现在,具有磁阻电阻器的惠斯通电桥的布置使得一方面提供了两个对称的区域,其中布置有桥接支路的电阻器的每个区域中,并且所有其它构建元件的移动也被设计为具有 高对称度。 由此,在传感器芯片中产生对称的温度梯度,该梯度不影响桥的输出信号。 温度依赖的零点漂移也不存在。 修整所需的可变电阻器是直接布置在中心轴上的单个单一结构部件,也不会干扰测量。 该装置特别适用于电流强度的无电位测量。
    • 3. 发明申请
    • MAGNETIC FIELD SENSING DEVICE
    • 磁场传感装置
    • US20130320972A1
    • 2013-12-05
    • US13982508
    • 2011-02-03
    • Uwe LoreitSebastian Weber
    • Uwe LoreitSebastian Weber
    • G01R33/09
    • G01R33/096B82Y25/00G01R31/318516G01R33/0011G01R33/0017G01R33/093G01R33/098
    • The present invention relates to a magnetic field sensing device (50) comprising several functionally different layers (38, 60, 70), wherein a Wheatstone bridge layer (70) comprises at least two resistors (20) of a Wheatstone bridge (18), each resistor (20) comprises at least one magnetic field sensing element (10) in the form of a resistor subelement (22), and a flip conductor layer (38) comprising at least one flip conductor (30) for flipping the internal magnetization state of each magnetic field sensing element (10). The flip conductor (30) comprises a plurality of conductor stripes (32) being arranged on at least two different flip conductor sublayers (38-1, 38-2) of said flip conductor layer (38) and being electrically coupled with each other through vias.The multilayer arrangement of said flip conductor (30) provides a compact design of said magnetic field sensing device (50), such that a decreased power consumption, decreased inductance and improved sensitivity of the magnetic field sensing device can be achieved.
    • 本发明涉及包括几个功能不同的层(38,60,70)的磁场感测装置(50),其中惠斯登电桥层(70)包括惠斯通电桥(18)的至少两个电阻器(20) 每个电阻器(20)包括形成电阻子元件(22)的至少一个磁场感测元件(10)和包括用于翻转内部磁化状态的至少一个翻盖导体(30)的翻盖导体层(38) 的每个磁场感测元件(10)。 翻盖导体(30)包括多个导体条(32),布置在所述翻转导体层(38)的至少两个不同的翻转导体子层(38-1,38-2)上,并且彼此通过 通孔 所述翻转导体(30)的多层布置提供了所述磁场感测装置(50)的紧凑设计,使得可以实现磁场感测装置的功耗降低,电感降低和灵敏度的提高。
    • 4. 发明授权
    • Sensor assembly
    • 传感器组件
    • US5719494A
    • 1998-02-17
    • US543194
    • 1995-10-13
    • Fritz DettmannUwe LoreitJurgen KunzeKarl-Heinz Lust
    • Fritz DettmannUwe LoreitJurgen KunzeKarl-Heinz Lust
    • G01R19/00G01R33/022G01R33/09H01L43/08G01R33/00G01R33/02
    • G01R33/09G01R33/022G01R33/096
    • A sensor assembly for measuring current I.sub.o is disclosed. The sensor assembly includes four magnetoresistive resistors (1, 2, 3, 4) arranged to form a Wheatstone bridge. The bridge is disposed over a U shaped conductor 14. The resistors are arranged so that two resistors (1,2) forming one bridge branch are disposed over one leg of the conductor and the two resistors (3,4) forming the other bridge branch are disposed over the other leg of the conductor. Each resistor is formed out of a number of magnetoresistive strips (1', 2', 3', 4'). The magnetoresistive strips forming the individual bridge branch resistors are interleaved so as to ensure the resistors forming each bridge branch have substantially the same temperature. When current I.sub.o is applied to the conductor, the equal and opposite magnetic fields that develop around the individual bridge branches cause the Wheatstone bridge to produce a signal U.sub.a that is a function of the current.
    • 公开了一种用于测量电流Io的传感器组件。 传感器组件包括布置成形成惠斯通电桥的四个磁阻电阻器(1,2,3,4)。 该桥被设置在U形导体14之上。电阻器被布置成使得形成一个桥接支路的两个电阻器(1,2)设置在导体的一个支路上,并且两个电阻器(3,4)形成另一个桥接支路 被布置在导体的另一条腿上。 每个电阻器由多个磁阻条(1',2',3',4')形成。 形成单个桥式分支电阻器的磁阻条被交错,以确保形成每个桥接支路的电阻具有基本上相同的温度。 当电流Io施加到导体时,围绕各个桥接支路产生的相等和相反的磁场使得惠斯通电桥产生作为电流的函数的信号Ua。
    • 8. 发明授权
    • Sensor chip with magnetoresistive wheatstone bridges for determining
magnetic field directions
    • 具有磁阻惠斯通电桥的传感器芯片用于确定磁场方向
    • US6011390A
    • 2000-01-04
    • US973608
    • 1997-12-11
    • Uwe LoreitFritz DettmanWulf Andra
    • Uwe LoreitFritz DettmanWulf Andra
    • G01D5/14G01D5/16G01R33/09G01B7/30
    • G01D5/145G01R33/09
    • An arrangement for a magnetoresistive sensor chip has two Wheatstone brid to determine the sine and cosine of the angle formed between a chip edge and the direction of the magnetic field. All resistances of the bridges consist of a plurality of magnetoresistive laminated elements (2) with current connections made of highly conductive thin films with parallel edges. When the resistances of a bridge are directly electrically interconnected, these edges form angles (5) of 90.degree. each. The parallel edges of the corresponding resistances of the sine and cosine bridges are mutually offset by 45.degree.. The magnetoresistive laminated elements (2) are distributed on the chip surface to reduce angle measurement errors to a minimum. Also disclosed are arrangements that allow the sensor chips to be used for measuring angles and positions.
    • PCT No.PCT / EP96 / 02538 Sec。 371 1997年12月11日第 102(e)1997年12月11日PCT PCT 1996年6月11日PCT公布。 公开号WO97 / 00426 日期1997年1月3日磁阻传感器芯片的布置有两个惠斯登电桥,以确定芯片边缘与磁场方向之间形成的角度的正弦和余弦。 桥的所有电阻由多个具有由具有平行边缘的高导电薄膜制成的电流连接的磁阻叠层元件(2)组成。 当桥的电阻直接电互连时,这些边形成90°的角度(5)。 正弦和余弦桥的相应电阻的平行边缘相互偏移45°。 磁阻层压元件(2)分布在芯片表面上,以将角度测量误差降至最低。 还公开了允许传感器芯片用于测量角度和位置的布置。
    • 10. 发明申请
    • Assembly for measuring at least one component of a magnetic field
    • 用于测量磁场的至少一个分量的装置
    • US20110309829A1
    • 2011-12-22
    • US13148647
    • 2010-02-10
    • Uwe LoreitJochen Schmitt
    • Uwe LoreitJochen Schmitt
    • G01R33/09G01R33/02
    • G01R33/091G01D1/00G01D15/00G01D21/00G01R33/0005G01R33/0011G01R33/0206G01R33/072G01R33/096
    • The assembly for measuring at least one component (x, y, z) of an applied magnetic field (H) including a surface area made of soft-magnetic material that is applied in the chip plane and separated into two partial regions (5) by a gap (6). The gap (6) is composed of gap sections having different longitudinal directions, and magnetic field sensitive elements (2) are accommodated in one or more gap sections disposed parallel to each other. The sensitivity direction (4) of the magnetic field sensitive elements (2) and the connecting line (6″) of the outer gap openings can form angles of 45° or 90°, and several surface areas can be present in the chip plane in order to completely capture all magnetic field components (x, y, z). Magnetoresistive sensor elements can advantageously be utilized as magnet-sensitive elements (2).
    • 用于测量施加的磁场(H)的至少一个分量(x,y,z)的组件,包括由软磁材料制成的表面区域,所述表面区域被施加在芯片平面中并被分离成两个部分区域(5),由 一个差距(6)。 间隙(6)由具有不同纵向的间隙部分组成,并且磁场敏感元件(2)容纳在彼此平行设置的一个或多个间隙部分中。 外部间隙开口的磁场敏感元件(2)和连接线(6“)的灵敏度方向(4)可以形成45°或90°的角度,并且在芯片平面中可以存在几个表面积 以完全捕获所有磁场分量(x,y,z)。 磁阻传感器元件可有利地用作磁敏元件(2)。