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    • 2. 发明授权
    • Motion detection by pulse signal generation
    • 通过脉冲信号生成进行运动检测
    • US06259248B1
    • 2001-07-10
    • US09150619
    • 1998-09-10
    • Akihiro GotohShoji OyamaTomoaki Ito
    • Akihiro GotohShoji OyamaTomoaki Ito
    • G01B700
    • H03K17/9515
    • A pulse signal generator comprises a magnetic element (10) capable of causing a large Barkhausen jump, a detector for detecting a change of magnetic field in the magnetic element, a magnetic field source (30) for magnetizing the magnetic element in a predetermined direction and a permanent magnet (40). The pulse signal generator further comprises an auxiliary member (50) provided such that the magnetic element is flanked between the permanent magnet and the auxiliary member and is in a magnetic field between the permanent magnet and the auxiliary member. The magnetic field varies with movement of an object (60) to be detected with respect to the permanent magnet to produce a magnetic change in the magnetic element which is detected by the detector to produce a pulse.
    • 脉冲信号发生器包括能够引起大的巴克豪森跳跃的磁性元件(10),用于检测磁性元件中的磁场变化的检测器,用于沿预定方向磁化磁性元件的磁场源(30),以及 永久磁铁(40)。 所述脉冲信号发生器还包括辅助构件(50),所述辅助构件(50)被设置为使得所述磁性元件在所述永磁体和所述辅助构件之间位于所述侧面,并且位于所述永磁体和所述辅助构件之间的磁场中。 磁场随着要被检测的物体(60)相对于永磁体的移动而变化,以产生由检测器检测到的磁性元件产生脉冲的磁变化。
    • 6. 发明授权
    • Pulse signal generator
    • 脉冲信号发生器
    • US6140727A
    • 2000-10-31
    • US186100
    • 1998-11-05
    • Akihiro GotoShoji OyamaTomoaki Ito
    • Akihiro GotoShoji OyamaTomoaki Ito
    • H03K3/45G01P3/488H02K21/38G01B7/14
    • G01P3/488
    • A pulse signal generator comprises a magnetic element (1) capable of causing a large Barkhausen jump; a detector (2) provided relative to the magnetic element; a magnetic field generator (3) provided in vicinity of the magnetic element for applying a biasing magnetic field to the magnetic element for making a predetermined magnetization; and a magnetic circuit forming unit (4) provided in vicinity of the magnetic element for applying a main magnetic field to the magnetic element for causing a large Barkhausen jump in the magnetic element. The magnetic field generator is provided with magnetic field concentration means (32A) for concentrating the biasing magnetic field upon the magnetic element and the magnetic field adjusting means (74) for adjusting an intensity of the biasing magnetic field upon the magnetic element.
    • 脉冲信号发生器包括能够引起大的巴克豪森跳跃的磁性元件(1); 相对于所述磁性元件提供的检测器(2); 磁场发生器(3),设置在所述磁性元件附近,用于向所述磁性元件施加偏置磁场以进行预定的磁化; 以及设置在磁性元件附近的用于向磁性元件施加主磁场以在磁性元件中引起大的巴克豪森跳跃的磁路形成单元(4)。 磁场发生器设置有用于将偏置磁场集中在磁性元件上的磁场集中装置(32A)和用于调节磁性元件上的偏置磁场强度的磁场调节装置(74)。