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    Magnetic detection apparatus
    1.
    发明授权
    Magnetic detection apparatus 有权
    磁检测装置

    公开(公告)号：US08497674B2

    公开(公告)日：2013-07-30

    申请号：US12907599

    申请日：2010-10-19

    申请人： Yoshinori Tatenuma ,  Hideki Shimauchi ,  Masahiro Yokotani ,  Yuji Kawano ,  Hiroshi Kobayashi ,  Kazuyasu Nishikawa ,  Manabu Tsukamoto

    发明人： Yoshinori Tatenuma ,  Hideki Shimauchi ,  Masahiro Yokotani ,  Yuji Kawano ,  Hiroshi Kobayashi ,  Kazuyasu Nishikawa ,  Manabu Tsukamoto

    IPC分类号： G01R33/02 ,  G01B7/30

    CPC分类号： G01D5/2448 ,  G01P3/42 ,  G01P3/481 ,  G01P3/488

    摘要： A magnetic detection apparatus includes a first comparison circuit that waveform-shapes the amplitude of a detection signal from magneto-electric transducers by DC coupling, a third comparison circuit that waveform-shapes the detection signal by AC coupling, an oscillation circuit having a natural frequency, a control circuit that counts the output of the first comparison circuit by using the oscillation means, and a selection circuit that selects the output of the first comparison means and the output of the second comparison means. The control circuit counts rising from the next rising or falling from the next falling of an output rectangular wave of the first comparison circuit, and provides output to the selection circuit at the time point at which the count value reaches a desired value. The selection circuit selects and outputs the output rectangular wave of the first comparison circuit or the third comparison circuit.

    摘要翻译： 磁检测装置包括：第一比较电路，其通过DC耦合对来自磁电换能器的检测信号的振幅进行波形整形;第三比较电路，其通过AC耦合对检测信号进行波形整形;具有固有频率的振荡电路 控制电路，其通过使用振荡装置对第一比较电路的输出进行计数，以及选择电路，其选择第一比较装置的输出和第二比较装置的输出。 控制电路从第一比较电路的输出矩形波的下一个下降沿开始下一个上升或下降，并且在计数值达到期望值的时间点向选择电路提供输出。 选择电路选择并输出第一比较电路或第三比较电路的输出矩形波。

    Magnetic detection apparatus
    2.
    发明授权
    Magnetic detection apparatus 有权
    磁检测装置

    公开(公告)号：US07982456B2

    公开(公告)日：2011-07-19

    申请号：US12277691

    申请日：2008-11-25

    申请人： Yuji Kawano ,  Hiroshi Kobayashi ,  Yoshinori Tatenuma ,  Masahiro Yokotani

    发明人： Yuji Kawano ,  Hiroshi Kobayashi ,  Yoshinori Tatenuma ,  Masahiro Yokotani

    IPC分类号： G01B7/30

    CPC分类号： G01P13/045 ,  G01D11/245 ,  G01P3/487

    摘要： In a magnetic detection apparatus, a magnetic detection sensor generates a sensor output signal whose high level and low level have different potentials in accordance with the moving direction of a magnetic moving object, and a computer unit includes three comparator circuits and detects the output signal of the magnetic detection sensor with three levels of comparison threshold values, so that the moving direction of the magnetic moving object can be detected accurately without any delay.

    摘要翻译： 在磁检测装置中，磁检测传感器根据磁性运动物体的移动方向产生高电平和低电平具有不同电位的传感器输出信号，并且计算机单元包括三个比较电路，并检测输出信号 具有三级比较阈值的磁检测传感器，使得能够准确地检测磁性移动物体的移动方向而没有任何延迟。

    Magnetic detector
    5.
    发明授权
    Magnetic detector 有权
    磁性探测器

    公开(公告)号：US07397236B2

    公开(公告)日：2008-07-08

    申请号：US11002234

    申请日：2004-12-03

    申请人： Yoshinori Tatenuma ,  Masahiro Yokotani ,  Izuru Shinjo

    发明人： Yoshinori Tatenuma ,  Masahiro Yokotani ,  Izuru Shinjo

    IPC分类号： G01B7/14 ,  G01B7/30 ,  G01R33/02

    CPC分类号： G01D5/147

    摘要： The invention provides a magnetic detector that exerts no influence on detection accuracy of a magnetic movable body, being a detected body, even if relative positions of magnetic resistance elements and a magnet are out of alignment due to variation occurred in manufacturing process. A magnetic detector includes: a magnetic field detection part constructed of at least two magnetic resistance elements; a magnet for applying a magnetic field to the magnetic resistance elements; a magnetic movable body for changing the magnetic field that is generated by the magnet; and a processing circuit part for outputting a signal based on the change in resistance values of the magnetic resistance elements due to the change in the magnetic field; and in which a shape of the magnetic resistance elements is symmetric with respect to a point.

    摘要翻译： 本发明提供了一种磁检测器，即使由于制造过程中发生变化而导致磁阻元件和磁铁的相对位置不对准，也不会对作为检测体的磁性可移动体的检测精度产生影响。 磁检测器包括：由至少两个磁阻元件构成的磁场检测部; 用于向磁阻元件施加磁场的磁体; 用于改变由磁体产生的磁场的磁性移动体; 以及处理电路部分，用于基于磁场的变化而基于磁阻元件的电阻值的变化输出信号; 并且其中磁阻元件的形状相对于点对称。

    Rotation information detecting apparatus with noise suppression circuit
    7.
    发明授权
    Rotation information detecting apparatus with noise suppression circuit 有权
    具有噪声抑制电路的旋转信息检测装置

    公开(公告)号：US07053605B2

    公开(公告)日：2006-05-30

    申请号：US10971108

    申请日：2004-10-25

    申请人： Izuru Shinjo ,  Yoshinori Tatenuma ,  Masahiro Yokotani

    发明人： Izuru Shinjo ,  Yoshinori Tatenuma ,  Masahiro Yokotani

    IPC分类号： G01B7/30

    CPC分类号： G01D5/145

    摘要： There is provided a rotation information detecting apparatus which suppresses noise superimposed on an output line and can prevent detection of erroneous rotation information. A periodic changing magnetic field is applied to a detection element according to the rotation of a rotation object, and rotation information is detected. A signal processing circuit includes an output circuit for generating a binary output signal changing between a high level and a low level according to the rotation of the rotation object. The output circuit includes an output transistor, an output line connected to the output transister, a power supply terminal for the output transistor, and a noise suppression circuit connected between the output line and the power supply terminal a power supply terminal. The noise suppression circuit includes a diode and a current limiting resistor.

    摘要翻译： 提供一种旋转信息检测装置，其抑制叠加在输出线上的噪声，并且可以防止错误旋转信息的检测。 根据旋转对象的旋转将周期性变化的磁场施加到检测元件，并且检测旋转信息。 信号处理电路包括输出电路，用于根据旋转对象的旋转产生在高电平和低电平之间变化的二进制输出信号。 输出电路包括输出晶体管，连接到输出转换器的输出线，输出晶体管的电源端以及连接在输出线和电源端之间的电源端的噪声抑制电路。 噪声抑制电路包括二极管和限流电阻。

    Rotation information detecting apparatus
    8.
    发明申请
    Rotation information detecting apparatus 有权
    旋转信息检测装置

    公开(公告)号：US20050270019A1

    公开(公告)日：2005-12-08

    申请号：US10971108

    申请日：2004-10-25

    申请人： Izuru Shinjo ,  Yoshinori Tatenuma ,  Masahiro Yokotani

    发明人： Izuru Shinjo ,  Yoshinori Tatenuma ,  Masahiro Yokotani

    IPC分类号： G01D5/245 ,  G01B7/30 ,  G01D5/14

    CPC分类号： G01D5/145

    摘要： There is provided a rotation information detecting apparatus which suppresses noise superimposed on an output line and can prevent detection of erroneous rotation information. A periodic changing magnetic field is applied to a detection element according to the rotation of a rotation object, and rotation information is detected. A signal processing circuit includes an output circuit for generating a binary output signal changing between a high level and a low level according to the rotation of the rotation object. The output circuit includes an output transistor, an output line connected to the output transister, a power supply terminal for the output transistor, and a noise suppression circuit connected between the output line and the power supply terminal a power supply terminal. The noise suppression circuit includes a diode and a current limiting resistor.

    摘要翻译： 提供一种旋转信息检测装置，其抑制叠加在输出线上的噪声，并且可以防止错误旋转信息的检测。 根据旋转对象的旋转将周期性变化的磁场施加到检测元件，并且检测旋转信息。 信号处理电路包括输出电路，用于根据旋转对象的旋转产生在高电平和低电平之间变化的二进制输出信号。 输出电路包括输出晶体管，连接到输出转换器的输出线，输出晶体管的电源端以及连接在输出线和电源端之间的电源端的噪声抑制电路。 噪声抑制电路包括二极管和限流电阻。

    Magnetic detection device
    9.
    发明申请
    Magnetic detection device 审中-公开
    磁检测装置

    公开(公告)号：US20070114991A1

    公开(公告)日：2007-05-24

    申请号：US11377292

    申请日：2006-03-17

    申请人： Yoshinori Tatenuma ,  Masahiro Yokotani

    发明人： Yoshinori Tatenuma ,  Masahiro Yokotani

    IPC分类号： G01B7/30 ,  G01B7/14

    CPC分类号： G01D5/00 ,  G01D5/147

    摘要： A magnetic detection device includes a magnetic moving unit, a magnet that is arranged to face the magnetic moving unit and that applies a magnetic field to the magnetic moving unit, and a magnetoelectric conversion element that is arranged to face the magnetic moving unit and includes at least one segment that detects a change in the applied magnetic field due to rotation of the magnetic moving unit, wherein the magnetic moving unit has a shape that generates an asymmetrical change in magnetic field to the magnetoelectric conversion element in accordance with the direction of rotation of the magnetic moving unit. Thus, a magnetic detection device that can detect the direction of rotation easily and reliably is provided.

    摘要翻译： 磁检测装置包括：磁性移动单元，被配置为面对磁性移动单元并且向磁性移动单元施加磁场的磁体;以及磁电转换元件，被配置为面对磁性移动单元并且包括在 至少一个段，其检测由于所述磁性移动单元的旋转而施加的磁场的变化，其中所述磁性移动单元具有根据所述磁性移动单元的旋转方向产生与所述磁电转换元件的磁场的不对称变化的形状 磁性移动单元。 因此，能够容易且可靠地检测旋转方向的磁检测装置。