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    VERFAHREN ZUR HERSTELLUNG EINES GMR-BRÜCKENSENSORS SOWIE GMR-BRÜCKENSENSOR
    4.
    发明公开
    VERFAHREN ZUR HERSTELLUNG EINES GMR-BRÜCKENSENSORS SOWIE GMR-BRÜCKENSENSOR 失效
    用于生产GMR桥和传感器GMR桥式传感器

    公开(公告)号：EP0892928A1

    公开(公告)日：1999-01-27

    申请号：EP97907011.0

    申请日：1997-01-23

    申请人： ROBERT BOSCH GMBH

    发明人： NEUMANN, Christian ,  MARX, Klaus ,  JOST, Franz ,  FREITAG, Martin ,  SENGHAAS, Dietmar

    IPC分类号： H01L43 ,  G01R33

    CPC分类号： G01R33/09 ,  H01L43/12 ,  Y10T29/49034

    摘要： The invention concerns a process for producing a GMR bridge sensor and the bridge sensor itself which connects magnetoresistive resistors (1 - 4) into a bridge to detect a magnetic field. The resistors are made of a material which shows Giant Magnetoresistive Ratio Effect (GMR Effect). The magnetoresistive sensitivity of the individual resistors is caused by tempering. Tempering the resistors is done by selectively directing a current into the bridge connections (5 - 8) which is sufficient to achieve the temperature required for tempering. By switching the bridge connections, the resistors are given, pair-wise or individually, the necessary property for the GMR effect. The material used for the resistors is from the class of discontinuous laminated materials, especially NiFe/Ag, in which the GMR effect is induced by tempering one time at a specific temperature.

    ANORDNUNG ZUR DREHWINKELERFASSUNG EINES DREHBAREN ELEMENTS
    5.
    发明公开
    ANORDNUNG ZUR DREHWINKELERFASSUNG EINES DREHBAREN ELEMENTS 无效
    安排角度获取的旋转要素

    公开(公告)号：EP1049908A1

    公开(公告)日：2000-11-08

    申请号：EP99936400.3

    申请日：1999-06-02

    申请人： ROBERT BOSCH GMBH

    发明人： MARX, Klaus ,  KITTEL, Hartmut ,  JOST, Franz

    IPC分类号： G01B7/30 ,  G01D5/16

    CPC分类号： G01B7/00 ,  G01B7/14 ,  G01B7/30 ,  G01D5/16 ,  G01D5/18 ,  G01D5/20 ,  G01P3/487 ,  G01R33/06 ,  G01R33/07

    摘要： The invention relates to a system for detecting the angle of rotation of a rotatable element. By evaluating magnetically influenced properties of a sensor system a first magnetic field (Bext) generated or influenced by a rotating element can be detected in an evaluation circuit and used to determine the angle of rotation. By using the magnetoresistive effect over a first angular range, notable an angular range of 180°, the sensor system provides signals clearly attributable to a direction of the magnetic field (Bext). Means for applying an auxiliary magnetic field (BH) to the sensor system are provided for by means of which the signals attributable to the direction of the first magnetic field (Bext) can be modified for the definite attribution of an angle over a second angular range, notably an angular range of 360°.

    SENSORANORDNUNG ZUR ERFASSUNG VON WINKELÄNDERUNGEN
    6.
    发明公开
    SENSORANORDNUNG ZUR ERFASSUNG VON WINKELÄNDERUNGEN 审中-公开
    传感器系统探测角度的变化

    公开(公告)号：EP0975943A1

    公开(公告)日：2000-02-02

    申请号：EP98966186.3

    申请日：1998-12-02

    申请人： ROBERT BOSCH GMBH

    发明人： ULLMANN, Thomas ,  DUKART, Anton ,  MARX, Klaus ,  JOST, Franz ,  HERDERICH, Hans-Juergen

    IPC分类号： G01M3/10 ,  G01B7/24

    CPC分类号： G01L3/104 ,  G01B7/24

    摘要： The invention relates to a sensor arrangement for detecting small changes in the angle of moving mechanical parts. A magnet (3) and at least one sensor (5) are provided, said sensor being located opposite the part and emitting an electrical output signal which is dependent on the direction of the field lines (4) of the magnet (3). The sensor (5) is a magnetoresistive sensor (5) which is positioned opposite the one pole of the magnet (3) in such a way that the magnetic field-sensitive layer is tangential to the rotation causing the change in angle.

    VERFAHREN UND VORRICHTUNG ZUR WINKELMESSUNG BEI EINEM DREHBAREN KÖRPER
    7.
    发明公开
    VERFAHREN UND VORRICHTUNG ZUR WINKELMESSUNG BEI EINEM DREHBAREN KÖRPER 失效
    方法和装置的旋转体测角

    公开(公告)号：EP0877916A1

    公开(公告)日：1998-11-18

    申请号：EP96900872.0

    申请日：1996-01-31

    申请人： ROBERT BOSCH GMBH

    发明人： ZABLER, Erich ,  MARX, Klaus ,  JOST, Franz ,  ABENDROTH, Manfred ,  BRAUN, Hans

    IPC分类号： G01D5

    CPC分类号： G01D5/145 ,  G01D5/04 ,  G01D5/2451 ,  G01K13/02

    摘要： A process and device are disclosed for measuring the rotation angle of a rotary body, in particular a body capable of rotating over more than 360°. The rotary body co-operates with at least two other rotary bodies, for example toothed wheels, whose angular position is determined by means of two sensors. The relative position of the rotary body is derived from the thus determined angular positions. For clear indications to be given, all three rotary bodies or toothed wheels must have a predetermined number of teeth. The process and device may be used for example to determine the steering angle of a motor vehicle.

    MAGNETORESISTIVER SENSOR MIT TEMPERATURSTABILEM NULLPUNKT
    8.
    发明公开
    MAGNETORESISTIVER SENSOR MIT TEMPERATURSTABILEM NULLPUNKT 失效
    磁阻传感器温度稳定的零

    公开(公告)号：EP0864101A1

    公开(公告)日：1998-09-16

    申请号：EP97939970.0

    申请日：1997-08-23

    申请人： ROBERT BOSCH GMBH

    发明人： MARX, Klaus ,  JOST, Franz

    IPC分类号： G01B7 ,  G01D5 ,  G01R33

    CPC分类号： G01D5/145 ,  G01R33/09

    摘要： Disclosed is a non-contact magnetoresistive sensor, especially an angular sensor, which sends an output signal dependent on the angular position which is to be detected and has a certain dependence on temperature. Dependence on temperature is however minimal for certain angles. Initially, the angular sensor output signal is detected on the angular range with at least two different temperatures, and one of the angles, where the deviation between the signals is low, is selected as a zero point for the subsequent measurements.