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45 条记录 (耗时 0.035 秒)

    Rotation sensor
    4.
    发明授权
    Rotation sensor 有权
    旋转传感器

    公开(公告)号：US06323644B1

    公开(公告)日：2001-11-27

    申请号：US09422973

    申请日：1999-10-22

    申请人： Motohisa Taguchi ,  Izuru Shinjo ,  Yuji Kawano ,  Tatsuya Fukami ,  Kazuhiko Tsutsumi ,  Ikuya Kawakita

    发明人： Motohisa Taguchi ,  Izuru Shinjo ,  Yuji Kawano ,  Tatsuya Fukami ,  Kazuhiko Tsutsumi ,  Ikuya Kawakita

    IPC分类号： G01R730

    CPC分类号： B82Y25/00 ,  G01R33/093

    摘要： The present invention improves the sensitivity and expands the temperature range of operation of a magnetic detection device used in conjunction with rotary shafts such as those found in automobiles. A magnetic detection element consists of a giant magnetoresistance element and an integrated circuit for performing a predetermined operational processing based on the variation of magnetic field detected by the giant magnetoresistance element, and the magnetic detection element is operated in the magnetic field in the range of exceeding the magnetic field for maximizing the resistance value of the giant magnetoresistance element and below the field obtained by multiplying the saturation magnetic field of the giant magnetoresistance element by 0.8.

    摘要翻译： 本发明提高了灵敏度，并且扩大了与诸如在汽车中发现的旋转轴一起使用的磁检测装置的操作温度范围。 磁检测元件由巨磁阻元件和集成电路组成，用于基于由巨磁电阻元件检测到的磁场的变化执行预定的操作处理，并且磁检测元件在超出范围内的磁场中操作 用于使巨磁电阻元件的电阻值最大化并且低于通过将巨磁电阻元件的饱和磁场乘以0.8而获得的场的磁场。

    Magnetic detector with improved noise resistance characteristics
    5.
    发明授权
    Magnetic detector with improved noise resistance characteristics 有权
    磁性探测器具有改进的抗噪声特性

    公开(公告)号：US06211669B1

    公开(公告)日：2001-04-03

    申请号：US09175414

    申请日：1998-10-20

    申请人： Masahiro Yokotani ,  Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Naoki Hiraoka

    发明人： Masahiro Yokotani ,  Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Naoki Hiraoka

    IPC分类号： G01R3309

    CPC分类号： G01D5/147 ,  B82Y25/00 ,  G01R33/093

    摘要： Disclosed is a magnetic detector in which a GMR device is operated within the limited range of a magnetic field so as to optimize changes in resistance value of the GMR device and to improve noise resistance. The magnetic detector comprises a magnet (4) for generating a magnetic field, a rotary member (2) of magnetic material arranged with a predetermined gap left relative to the magnet and provided with projections capable of changing the magnetic field generated by the magnet, and a giant magnetoresistance device (3) of which resistance value is changed depending on the magnetic field changed by the rotary member of magnetic material. The giant magnetoresistance device is arranged in such a position with a predetermined gap relative to the magnetic field generating means that the giant magnetoresistance device is subject to a bias magnetic field applied with the intensity of magnetic field in a predetermined range, e.g., 100±150 [Oe], where the giant magnetoresistance device exhibits a high resistance change rate.

    摘要翻译： 公开了一种磁检测器，其中GMR器件在磁场的有限范围内操作，以便优化GMR器件的电阻值的变化并改善抗噪声性。 磁检测器包括用于产生磁场的磁体（4），磁性材料的旋转部件（2），相对于磁体布置有预定的间隙，并且具有能够改变由磁体产生的磁场的突起，以及 电阻值根据由磁性材料的旋转构件变化的磁场而变化的巨磁阻装置（3）。 巨磁电阻装置相对于磁场发生装置以预定的间隔布置在这样的位置，巨磁电阻装置经受施加有预定范围的磁场强度的偏置磁场，例如100±150 [Oe]，其中巨磁电阻器件表现出高电阻变化率。

    Magnetic detecting apparatus with giant magnetoresistive sensing element and level shifting waveform processing circuit
    6.
    发明授权
    Magnetic detecting apparatus with giant magnetoresistive sensing element and level shifting waveform processing circuit 失效
    具有巨磁阻检测元件和电平移位波形处理电路的磁检测装置

    公开(公告)号：US5952824A

    公开(公告)日：1999-09-14

    申请号：US895415

    申请日：1997-07-16

    申请人： Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Naoki Hiraoka ,  Yutaka Ohashi

    发明人： Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Naoki Hiraoka ,  Yutaka Ohashi

    IPC分类号： G01P3/488 ,  G01B7/00 ,  G01B7/30 ,  G01D5/14 ,  G01D5/16 ,  G01D5/20 ,  G01D5/245 ,  G01R33/09 ,  G08C17/04 ,  H02H9/04 ,  H03K5/01 ,  G01P7/481

    CPC分类号： G01R33/093 ,  B82Y25/00 ,  G01D5/147

    摘要： A magnetic detecting apparatus is capable of performing accurate waveform processing without being affected by noise signals or the like, the level shifting circuit thereof having a fixed voltage shift so as to be free of varying amplitudes of analog signals. Waveform shaping circuitry for turning an analog signal detected from a giant magnetoresistive element into a pulse signal includes: the level shifting circuit for generating an amplified voltage (V1) of analog signals and a voltage (V2) which is higher than the voltage (V1) and a voltage (V3) which is lower than the voltage (V1); a circuit which alternately retains the minimum value of the voltage (V2) and the maximum value of the voltage (V3) as a reference voltage; and a comparator circuit which compares a voltage resulting from adding a hysteresis to the voltage (V1) with the reference voltage and issues a pulse signal. The level shifting circuit is constituted by resistors inserted between the output terminal of the voltage (V1) and the output terminals of the voltages (V2, V3), and constant-current circuits connected in series with the resistors.

    摘要翻译： 磁检测装置能够进行精确的波形处理而不受噪声信号等的影响，其电平移位电路具有固定的电压偏移，以便没有变化的模拟信号幅度。 用于将从巨磁阻元件检测的模拟信号转换成脉冲信号的波形整形电路包括：用于产生模拟信号的放大电压（V1）的电平移位电路和高于电压（V1）的电压（V2） 和低于电压（V1）的电压（V3）; 交替地保持电压（V2）的最小值和电压（V3）的最大值作为参考电压的电路; 以及比较器电路，其将由滞后增加的电压与参考电压（V1）进行比较，并发出脉冲信号。 电平移动电路由插入在电压（V1）的输出端和电压（V2，V3）的输出端之间的电阻和与电阻串联连接的恒流电路构成。

    Magnetic detector having separate base and connector units and production process therefor
    7.
    发明授权
    Magnetic detector having separate base and connector units and production process therefor 有权
    磁性检测器具有单独的基座和连接器单元及其制造工艺

    公开(公告)号：US06326779B1

    公开(公告)日：2001-12-04

    申请号：US09172079

    申请日：1998-10-14

    申请人： Izuru Shinjo ,  Takuji Nada ,  Yasuyoshi Hatazawa ,  Naoki Hiraoka

    发明人： Izuru Shinjo ,  Takuji Nada ,  Yasuyoshi Hatazawa ,  Naoki Hiraoka

    IPC分类号： G01B730

    CPC分类号： G01R33/09

    摘要： A magnetic detector having high productivity is provided by producing a connector and a base as separate units, electrically interconnecting them, forming a cut-out portion in a press-in portion of the base, and injecting a thermosetting resin adhesive into a whole case. The case also has a recess portion that prevents excess injected resin from leaking to the outside of the case. The structure of the base also allows for easier injection of resin and simplified connection of the magnetic resistance element to the base.

    摘要翻译： 通过制造连接器和基座作为分离单元，电连接它们，在基座的压入部分形成切口部分，并将热固性树脂粘合剂注入整个壳体中来提供高生产率的磁性检测器。 壳体还具有防止多余注入树脂泄漏到壳体外部的凹陷部分。 基座的结构还允许更容易地注入树脂并简化磁阻元件与基座的连接。

    Magnetic detector with improved temperature characteristic and noise resistance
    8.
    发明授权
    Magnetic detector with improved temperature characteristic and noise resistance 有权
    具有改善温度特性和抗噪声性能的磁性探测器

    公开(公告)号：US06246234B1

    公开(公告)日：2001-06-12

    申请号：US09175413

    申请日：1998-10-20

    申请人： Masahiro Yokotani ,  Izuru Shinjo ,  Yasuyoshi Hatazawa

    发明人： Masahiro Yokotani ,  Izuru Shinjo ,  Yasuyoshi Hatazawa

    IPC分类号： G01B730

    CPC分类号： B82Y25/00 ,  G01R33/093

    摘要： Disclosed is a magnetic detector in which a GMR device is operated within the limited range of a magnetic field so as to optimize a temperature characteristic of changes in resistance value and to improve noise resistance. The magnetic detector comprises a magnet (4) for generating a magnetic field, a rotary member (2) of magnetic material arranged with a predetermined gap left relative to the magnet and provided with projections capable of changing the magnetic field generated by the magnet, and a giant magnetoresistance device (3) of which resistance value is changed depending on the magnetic field changed by the rotary member of magnetic material. The giant magnetoresistance device is arranged to have such a predetermined gap relative to the magnet that the giant magnetoresistance device operates under a magnetic field applied to change in a predetermined amplitude range, e.g., 50˜150 [Oe], where a temperature characteristic of resistance change rate of the giant magnetoresistance device is small.

    摘要翻译： 公开了一种磁检测器，其中GMR器件在磁场的有限范围内操作，以便优化电阻值变化的温度特性并改善抗噪声性。 磁检测器包括用于产生磁场的磁体（4），磁性材料的旋转部件（2），相对于磁体布置有预定的间隙，并且具有能够改变由磁体产生的磁场的突起，以及 电阻值根据由磁性材料的旋转构件变化的磁场而变化的巨磁阻装置（3）。 巨磁电阻装置被布置成具有相对于巨磁电阻装置在施加以在预定幅度范围（例如50〜150 [Oe]）改变的磁场下操作的磁体的这样的预定间隙，其中电阻的温度特性 巨磁阻器件的变化率很小。

    Magnetic sensor with simplified integral construction
    9.
    发明授权
    Magnetic sensor with simplified integral construction 失效
    磁传感器采用简化的整体结构

    公开(公告)号：US6072311A

    公开(公告)日：2000-06-06

    申请号：US936916

    申请日：1997-09-25

    申请人： Izuru Shinjo ,  Yasuyoshi Hatazawa

    发明人： Izuru Shinjo ,  Yasuyoshi Hatazawa

    IPC分类号： G01D5/18 ,  G01D5/245 ,  G01P3/487 ,  G01P3/488 ,  G01R33/02 ,  G01R33/09 ,  H01L43/08

    CPC分类号： G01R33/09 ,  G01P3/487 ,  G01P3/488

    摘要： A magnetic sensor which can be produced in a small size at low cost with high productivity. The magnetic sensor includes: a main electric circuit; a magnet disposed on said main electric circuit; and a detector unit including an integrated circuit having a magnetic detector unit composed of a sensing resistor for outputting a signal in the form of a voltage change corresponding to the change in the magnetic field of the magnet, and having a filter for removing noise from a signal applied to a processing circuit of the integrated circuit.

    摘要翻译： 一种可以低成本，高生产率生产小尺寸的磁传感器。 磁传感器包括：主电路; 设置在所述主电路上的磁体; 以及检测器单元，其包括具有磁检测器单元的集成电路，所述磁检测器单元由感测电阻器组成，所述感测电阻器用于输出与磁体的磁场变化相对应的电压变化形式的信号，并且具有用于从 信号施加到集成电路的处理电路。

    Magnetic detector with a magnetoresistive element having hysteresis
    10.
    发明授权
    Magnetic detector with a magnetoresistive element having hysteresis 失效
    磁阻检测器具有磁滞元件

    公开(公告)号：US06255811B1

    公开(公告)日：2001-07-03

    申请号：US08906830

    申请日：1997-08-11

    申请人： Yasuyoshi Hatazawa ,  Izuru Shinjo ,  Wataru Fukui

    发明人： Yasuyoshi Hatazawa ,  Izuru Shinjo ,  Wataru Fukui

    IPC分类号： G01B714

    CPC分类号： G01D5/147 ,  G01B7/003 ,  G01R33/09

    摘要： A magnetic detector to detect a magnetic object's rotation and movement using a magnetoresistive element having hysteresis. The magnetoresistive element is set so as to tilt from the magnetizing direction of a magnet up to a predetermined angle &thgr; between the rotational magnetic object to be detected and the magnet. The magnetic detector provides a high accuracy signal that corresponds to the distance between the rotational magnetic object to be detected and the magnetoresistive element. The signal obtained is independent of the rotational direction or rotational speed of the magnetic object to be detected or the atmospheric temperature of an apparatus. Moreover, the temperature dependency of the output signal (amplitude) of the magnetoresistive element is decreased.

    摘要翻译： 一种使用具有磁滞的磁阻元件来检测磁性物体的旋转和运动的磁检测器。 磁阻元件被设定为从磁体的磁化方向倾斜到待检测的旋转磁性物体与磁体之间的预定角度θ。 磁检测器提供对应于要检测的旋转磁性物体与磁阻元件之间的距离的高精度信号。 所获得的信号与被检测的磁性物体的旋转方向或转速无关，或与装置的大气温度无关。 此外，磁阻元件的输出信号（振幅）的温度依赖性降低。