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    • 1. 发明授权
    • Sensor arrangement for detecting changes in angle
    • 用于检测角度变化的传感器布置
    • US06205866B1
    • 2001-03-27
    • US09355042
    • 1999-07-22
    • Thomas UllmannAnton DukartKlaus MarxFranz JostHans-Juergen Herderich
    • Thomas UllmannAnton DukartKlaus MarxFranz JostHans-Juergen Herderich
    • G01L302
    • G01L3/104G01B7/24
    • The sensor device accurately measures small angle changes of mechanical parts that rotate relative to each other. The sensor device includes only one cylindrical magnet (3) extending axially from a first part; two magnetoresistive sensors (5′,5″) mounted on a second part and located in the magnetic field of the sole magnet (3), the two magnetoresistive sensors having respective magnetic field sensitive layers (MS) facing a magnetic pole of the magnet (3), extending tangentially to a rotation direction in which the parts rotate relative to each other and generating respective output signals according to magnetic field line direction; and a device (PT) for combining the respective output signals of the two magnetoresistive sensors (5′,5″) to produce a combined output signal characteristic of the relative rotation angle of the parts. The combined output signal is set to zero when the parts are at a predetermined relative rotation angle.
    • 传感器装置精确地测量相对于彼此旋转的机械部件的小角度变化。 传感器装置仅包括从第一部分轴向延伸的一个圆柱形磁体(3) 两个磁阻传感器(5',5“)安装在第二部分上并且位于唯一磁体(3)的磁场中,两个磁阻传感器具有面对磁体的磁极的相应的磁场敏感层(MS) (3),其沿相对于彼此旋转的旋转方向切向延伸,并根据磁场线方向产生相应的输出信号; 以及用于组合两个磁阻传感器(5',5“)的各个输出信号的装置(PT),以产生特征为部件的相对旋转角度的组合输出信号。 当部件处于预定的相对旋转角度时,组合的输出信号被设置为零。