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。

公开(公告)号：US06528992B2

公开(公告)日：2003-03-04

申请号：US09168669

申请日：1998-10-09

申请人： Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Takuji Nada ,  Masahiro Yokotani

发明人： Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Takuji Nada ,  Masahiro Yokotani

IPC分类号： G01B730

CPC分类号： G01R33/09

摘要： A magnetic detector for detecting a rotational angle of a gear-like rotary member of magnet material generates twice as many pulses as the number of projected or recessed portions of the rotary member of magnetic material. The magnetic detector comprises a magnet for generating a magnetic field, a rotary member of magnetic material disposed with a predetermined gap retaining relative to the magnet, and an magnetic field sensing device for detecting changes in the magnetic field by movement of the moving member of magnetic material. The magnetic field sensing device is disposed relative to the magnet so that a center axis of the magnetic field sensing device is aligned with a center axis of the magnet wherein a magnetic field acting on the magnetic field sensing device changes from positive to negative and from negative to positive with the movement of the moving member of magnetic material.

摘要翻译： 用于检测磁体材料的齿轮状旋转构件的旋转角度的磁检测器产生与磁性材料的旋转构件的突出或凹入部分的数量相同的脉冲数量的两倍。 磁检测器包括用于产生磁场的磁体，以相对于磁体保持预定间隙的方式设置的磁性材料的旋转部件，以及用于通过磁性移动部件的移动来检测磁场变化的磁场检测装置 材料。 磁场感测装置相对于磁体设置，使得磁场感测装置的中心轴线与磁体的中心轴线对齐，其中作用在磁场感测装置上的磁场从正向负变为负 随着磁性材料的移动构件的移动而呈正。

公开(公告)号：US06177793B1

公开(公告)日：2001-01-23

申请号：US09163980

申请日：1998-09-30

申请人： Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Takuji Nada ,  Masahiro Yokotani

发明人： Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Takuji Nada ,  Masahiro Yokotani

IPC分类号： G01B730

CPC分类号： G01R33/09

摘要： A magnetic detector D is disclosed which can perform precise detection even when a moving member of magnetic material is rotating at a very low speed, and can output a signal corresponding to recessed and projected portions of the moving member of magnetic material when the power is turned on and when the rotary member of magnetic material is stopped. The magnetic detector includes a rotary member of magnetic material, a detecting unit for detecting a displacement of the rotary member of magnetic material, an AC coupling circuit for removing a DC component from an output signal of the detecting unit, a comparison circuit for converting an output signal of the AC coupling circuit into a binary signal, an output circuit for outputting an output signal of the comparison circuit, and a variable resistor for setting a comparison level for the comparison circuit to a level between two different signal levels.

摘要翻译： 磁性检测器D被公开，即使当磁性材料的移动部件以非常低的速度旋转时也能进行精确的检测，并且当电力转动时，可以输出对应于磁性材料的移动部件的凹入和突出部分的信号 当磁性材料的旋转构件停止时。 磁检测器包括磁性材料的旋转部件，用于检测磁性材料的旋转部件的位移的检测单元，用于从检测单元的输出信号中去除直流分量的AC耦合电路，用于转换 AC耦合电路的输出信号转换为二进制信号，输出电路，输出比较电路的输出信号，以及可变电阻，用于将比较电路的比较电平设定为两个不同信号电平之间的电平。

公开(公告)号：US06194893B1

公开(公告)日：2001-02-27

申请号：US09162887

申请日：1998-09-30

申请人： Masahiro Yokotani ,  Yasuyoshi Hatazawa ,  Izuru Shinjo ,  Takuji Nada

发明人： Masahiro Yokotani ,  Yasuyoshi Hatazawa ,  Izuru Shinjo ,  Takuji Nada

IPC分类号： G01B714

CPC分类号： G01R33/09

摘要： A magnetic detector is disclosed with a power-on function which can essentially eliminate temperature characteristics of a magnetic field sensing device and improve edge detecting accuracy of alternately projected and recessed portions of a moving member of magnetic material. The magnetic detector comprises a magnet for generating a magnetic field, a rotary member of magnetic material disposed with a predetermined gap remaining relative to the magnet and having alternately projected and recessed portions to change the magnetic field generated by the magnet, a magnetoresistive device comprising a plurality of magnetic field sensing elements and detecting changes in the magnetic field by movement of the rotary member of magnetic material, and a magnetic guide for adjusting changes in the magnetic field caused by the alternately projected and recessed portions of the rotary member of magnetic material.

摘要翻译： 公开了具有开机功能的磁性检测器，其基本上可以消除磁场感测装置的温度特性，并提高磁性材料的移动部件的交替投影和凹陷部分的边缘检测精度。 磁检测器包括用于产生磁场的磁体，磁性材料的旋转构件，其相对于磁体保留预定间隙，并且具有交替地投影和凹陷部分以改变由磁体产生的磁场;磁阻装置，包括： 多个磁场感测元件，并且通过磁性材料的旋转构件的移动来检测磁场的变化，以及用于调整由磁性材料的旋转构件的交替突出和凹陷部分引起的磁场变化的磁性引导件。

公开(公告)号：US6111403A

公开(公告)日：2000-08-29

申请号：US161675

申请日：1998-09-29

申请人： Masahiro Yokotani ,  Yasuyoshi Hatazawa ,  Izuru Shinjo ,  Takuji Nada

发明人： Masahiro Yokotani ,  Yasuyoshi Hatazawa ,  Izuru Shinjo ,  Takuji Nada

IPC分类号： G01B7/00 ,  G01B7/30 ,  G01D5/245 ,  G01R33/09 ,  G01B7/14

CPC分类号： B82Y25/00 ,  G01R33/093

摘要： A magnetic detector is disclosed with a power-on function which can essentially eliminate temperature characteristics of a magnetic field sensing device and improve edge detecting accuracy of alternately projected and recessed portions of a moving member of magnetic material. The magnetic detector comprises a magnet for generating a magnetic field, a rotary member of magnetic material disposed with a predetermined gap remaining relative to the magnet and having alternately projected and recessed portions to change the magnetic field generated by the magnet, and a magnetoresistive device comprising a plurality of magnetic field sensing elements and detecting changes in the magnetic field by movement of the rotary member of magnetic material. The magnetic flux crosses the plurality of magnetic field sensing elements at a first predetermined angle when the recessed portion of the moving member of magnetic material is opposed to the magnetic field sensing device, and the magnetic flux crosses the plurality of magnetic field sensing elements at a second predetermined angle when the projected portion of the moving member of magnetic material is opposed to the magnetic field sensing device. The first and second predetermined angles are symmetrical with respect to a direction vertical to a plane in which the plurality of magnetic field sensing elements are arranged.

摘要翻译： 公开了具有开机功能的磁性检测器，其基本上可以消除磁场感测装置的温度特性，并提高磁性材料的移动部件的交替投影和凹陷部分的边缘检测精度。 磁检测器包括用于产生磁场的磁体，磁性材料的旋转构件，以相对于磁体残留预定间隙的方式设置，并且具有交替地投影和凹陷部分以改变由磁体产生的磁场;以及磁阻装置，包括 多个磁场感测元件，并且通过磁性材料的旋转构件的移动来检测磁场的变化。 当磁性材料的移动构件的凹部与磁场感测装置相对时，磁通量以第一预定角度与多个磁场感测元件交叉，并且磁通量以一定的角度与多个磁场感测元件交叉 当磁性材料的移动部件的突出部分与磁场感测装置相对时，是第二预定角度。 第一和第二预定角度相对于垂直于布置有多个磁场感测元件的平面的方向对称。

公开(公告)号：US06204662B1

公开(公告)日：2001-03-20

申请号：US09176427

申请日：1998-10-21

申请人： Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Takuji Nada ,  Masahiro Yokotani

发明人： Izuru Shinjo ,  Yasuyoshi Hatazawa ,  Takuji Nada ,  Masahiro Yokotani

IPC分类号： G01R3309

CPC分类号： B82Y25/00 ,  G01P3/487 ,  G01R33/093

摘要： A magnetic field sensing element comprising a giant magnetic resistance element formed on a substrate for detecting a change in a magnetic field, an integrated circuit formed on the substrate for carrying out predetermined arithmetic processing based on a change in the magnetic field, and an input side protective resistor and an output side protective resistor provided on the input side and the output side, respectively, of the integrated circuit, wherein the metal film from which the input side resistor and the output side resistor are formed is identical to the metal film from which the integrated circuit is formed.

摘要翻译： 一种磁场感测元件，包括形成在用于检测磁场变化的基板上的巨磁阻元件，形成在基板上的集成电路，用于基于磁场的变化执行预定的运算处理，以及输入侧 保护电阻和输出侧保护电阻分别设置在集成电路的输入侧和输出侧，其中形成输入侧电阻和输出侧电阻的金属膜与金属膜相同，金属膜与 形成集成电路。

公开(公告)号：US06426620B1

公开(公告)日：2002-07-30

申请号：US09307751

申请日：1999-05-10

申请人： Motohisa Taguchi ,  Izuru Shinjo ,  Yuji Kawano ,  Tatsuya Fukami ,  Kazuhiko Tsutsumi ,  Yuuichi Sakai ,  Naoki Hiraoka ,  Yasuyoshi Hatazawa

发明人： Motohisa Taguchi ,  Izuru Shinjo ,  Yuji Kawano ,  Tatsuya Fukami ,  Kazuhiko Tsutsumi ,  Yuuichi Sakai ,  Naoki Hiraoka ,  Yasuyoshi Hatazawa

IPC分类号： G01B700

CPC分类号： G01R33/09

摘要： A magnetic field sensing element comprises an underlayer formed on a substrate, a giant magnetoresistance element formed on the underlayer for detecting a change in a magnetic field, and an integrated circuit formed on the substrate for carrying out predetermined arithmetic processing based on a change in a magnetic field detected by the giant magnetoresistance element, wherein the giant magnetoresistance element and the integrated circuit are formed on the same surface.

摘要翻译： 磁场感测元件包括形成在基板上的底层，形成在用于检测磁场变化的底层上的巨磁阻元件，以及形成在基板上的集成电路，用于基于基板上的变化执行预定的算术处理 由巨磁阻元件检测的磁场，其中巨磁电阻元件和集成电路形成在同一表面上。

公开(公告)号：US06661221B2

公开(公告)日：2003-12-09

申请号：US10162180

申请日：2002-06-05

申请人： Motohisa Taguchi ,  Izuru Shinjo ,  Yuji Kawano ,  Tatsuya Fukami ,  Kazuhiko Tsutsumi ,  Yuuichi Sakai ,  Naoki Hiraoka ,  Yasuyoshi Hatazawa

发明人： Motohisa Taguchi ,  Izuru Shinjo ,  Yuji Kawano ,  Tatsuya Fukami ,  Kazuhiko Tsutsumi ,  Yuuichi Sakai ,  Naoki Hiraoka ,  Yasuyoshi Hatazawa

IPC分类号： H01L4308

CPC分类号： G01R33/09

摘要： A magnetic field sensing element comprises an underlayer formed on a substrate, a giant magnetoresistance element formed on the underlayer for detecting a change in a magnetic field, and an integrated circuit formed on the substrate for carrying out predetermined arithmetic processing based on a change in a magnetic field detected by the giant magnetoresistance element, wherein the giant magnetoresistance element and the integrated circuit are formed on the same surface.

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。

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。