公开(公告)号：US5627464A

公开(公告)日：1997-05-06

申请号：US506346

申请日：1995-07-24

申请人： Izuru Shinjo ,  Noriaki Hayashi ,  Akio Saito

发明人： Izuru Shinjo ,  Noriaki Hayashi ,  Akio Saito

IPC分类号： F01L1/04 ,  F01L1/047 ,  F01L1/46 ,  F02P7/067 ,  G01P3/488 ,  G01B7/30 ,  F01L1/00 ,  F02P17/00

CPC分类号： F01L1/047 ,  F01L1/46 ,  F02P7/0675 ,  G01P3/488 ,  F01L2820/041

摘要： A rotation angle detecting device according to the present invention comprises: a sensor having a first yoke made of a magnetic material on which a magnet is mounted, a second yoke made of a magnetic material on which a magnetic flux detector is mounted, which is disposed opposite to the first yoke with a predetermined space, and a housing for supporting the first yoke and the second yoke, and a vane secured on a camshaft of an internal combustion engine, having a wall portion which passes through space between the first yoke and the second yoke, and a rotation angle of the internal combustion engine is detected in accordance with a signal produced at said magnetic flux detecting device by passage of the wall portion of said vane through said space.

摘要翻译： 根据本发明的旋转角度检测装置包括：传感器，具有由安装有磁体的磁性材料制成的第一磁轭，由其上安装有磁通检测器的磁性材料制成的第二磁轭， 与第一磁轭相对的预定空间，以及用于支撑第一磁轭和第二磁轭的壳体，以及固定在内燃机的凸轮轴上的叶片，具有壁部，该壁部穿过第一磁轭和第二磁轭之间的空间， 根据通过所述叶片的壁部通过所述空间在所述磁通检测装置处产生的信号来检测内燃机的旋转角度。

公开(公告)号：US06819101B2

公开(公告)日：2004-11-16

申请号：US10422782

申请日：2003-04-25

申请人： Masahiro Yokotani ,  Izuru Shinjo ,  Noriaki Hayashi

发明人： Masahiro Yokotani ,  Izuru Shinjo ,  Noriaki Hayashi

IPC分类号： G01B730

CPC分类号： G01D5/147 ,  G01D5/145 ,  G01P3/487

摘要： A magnetic detector includes a moving body which is multipole-magnetized and which is rotated synchronously with a rotational axis; a magnetic resistance element for detecting a change in magnetic field of the rotating moving body; a processing circuit portion for outputting a signal corresponding to the multipole magnetization of the moving body in accordance with the change in resistance value of the magnetic resistance element due to the change in magnetic field; and a magnet for applying a bias magnetic field to the magnetic resistance element.

摘要翻译： 磁检测器包括多极磁化并与旋转轴线同步旋转的移动体; 用于检测旋转移动体的磁场变化的磁阻元件; 处理电路部分，用于根据磁场变化引起的磁阻元件的电阻值的变化，输出与移动体的多极磁化相对应的信号; 以及用于向磁阻元件施加偏置磁场的磁体。

公开(公告)号：US06339324B1

公开(公告)日：2002-01-15

申请号：US09659452

申请日：2000-09-11

申请人： Hiroshi Sakanoue ,  Noriaki Hayashi ,  Izuru Shinjo ,  Naoki Hiraoka ,  Wataru Fukui ,  Yutaka Ohashi

发明人： Hiroshi Sakanoue ,  Noriaki Hayashi ,  Izuru Shinjo ,  Naoki Hiraoka ,  Wataru Fukui ,  Yutaka Ohashi

IPC分类号： G01P344

CPC分类号： G01P3/487

摘要： The invention provides a magnetic object motion sensor which can operate with high accuracy not only when a magnetic object moves at high speeds but also even when it moves at low speeds, which can be produced with a greater production tolerance and a greater dimensional tolerance. The magnetic object motion sensor includes: magnetoelectric transducer elements disposed opposite protrusions of a moving magnetic object; a magnet for generating bias magnetic flux toward the magnetoelectric transducer elements; unbalanced bias producing means for producing imbalance in the magnetic field sensitivity between the magnetoelectric transducer elements; a differential amplifier for amplifying in a differential fashion the electric signals output by the magnetoelectric transducer elements; a waveform shaping circuit for converting the differential signal output by the differential amplifier to a pulse signal corresponding to the edges of the magnetic material protrusion; the unbalanced bias producing means producing a difference in the amplitude of the magnetic flux density between that applied to one element of the pair of magnetoelectric transducer elements and that applied to the other element so that the difference in the electric signal level corresponding to the difference in the amplitude of the magnetic flux density becomes greater than the hysteresis of the waveform shaping circuit, thereby, in effect, introducing imbalance in the sensitivity between the magnetoelectric transducer elements.

摘要翻译： 本发明提供了一种磁性物体运动传感器，其不仅在磁性物体以高速移动时，而且即使当其以低速移动时也能以高精度进行操作，这可以以更大的制造公差和更大的尺寸公差产生。 磁性物体运动传感器包括：与运动的磁性物体相对的突起设置的磁电换能器元件; 用于向磁电换能器元件产生偏磁通的磁体; 用于产生磁电换能器元件之间的磁场灵敏度不平衡的不平衡偏压产生装置; 用于以差分方式放大由电磁换能器元件输出的电信号的差分放大器; 波形整形电路，用于将由差分放大器输出的差分信号转换为对应于磁性材料突起的边缘的脉冲信号; 所述不平衡偏置产生装置产生施加到所述一对磁电换能器元件中的一个元件之间的磁通密度的振幅和施加到另一元件的磁通密度的差异，使得与所述另一元件相对应的电信号电平的差异 磁通密度的振幅变得大于波形整形电路的滞后，从而实际上引入了磁电换能器元件之间的灵敏度不平衡。

公开(公告)号：US5821744A

公开(公告)日：1998-10-13

申请号：US630584

申请日：1996-04-10

申请人： Izuru Shinjo ,  Noriaki Hayashi ,  Naoki Hiraoka ,  Wataru Fukui ,  Yutaka Ohashi

发明人： Izuru Shinjo ,  Noriaki Hayashi ,  Naoki Hiraoka ,  Wataru Fukui ,  Yutaka Ohashi

IPC分类号： G01B7/00 ,  G01B7/30 ,  G01D5/245 ,  G01P1/00 ,  G01P1/02 ,  G01P3/487 ,  G01P3/488

CPC分类号： G01P1/026 ,  B29C45/14655 ,  G01P1/00 ,  G01P3/487 ,  G01P3/488 ,  Y10T29/4902 ,  Y10T29/49121 ,  Y10T29/49158

摘要： A rotation sensor is provided which is inexpensive and has excellent performance, high workability, and high reliability. Specifically, the rotation sensor contains a magnetoelectric conversion device, a base, an insert conductor, a surface mount electrode part, an electronic component, and a connector part. The magnetoelectric conversion device senses a magnetic flux change associated with a rotation of a magnetic rotation body, and the base is made of resin and holds the magnetoelectric conversion device. The insert conductor is insert-molded in the base, and an exposed part of the insert conductor is exposed to a surface of the base. The surface mount electrode part is formed by at least the exposed part of the insert conductor and is connected to the magnetoelectric conversion device. The electronic component is mounted on the surface mount electrode part, and the connector part is formed by using an end of the insert conductor as a terminal electrode.

摘要翻译： 提供了一种价格低廉，性能优异，可加工性高，可靠性高的旋转传感器。 具体地，旋转传感器包括磁电转换装置，基座，插入导体，表面安装电极部件，电子部件和连接器部件。 磁电转换装置感测与磁旋转体的旋转相关联的磁通量变化，并且基座由树脂制成并保持磁电转换装置。 插入导体嵌入成型在基座中，并且插入导体的暴露部分暴露于基部的表面。 表面安装电极部分至少由插入导体的露出部分形成，并连接到磁电转换装置。 电子部件安装在表面安装电极部分上，并且通过使用插入导体的端部作为端子电极来形成连接器部分。

公开(公告)号：US06427316B1

公开(公告)日：2002-08-06

申请号：US09432158

申请日：1999-11-02

申请人： Izuru Shinjo ,  Noriaki Hayashi ,  Naoki Hiraoka ,  Wataru Fukui ,  Yutaka Ohashi

发明人： Izuru Shinjo ,  Noriaki Hayashi ,  Naoki Hiraoka ,  Wataru Fukui ,  Yutaka Ohashi

IPC分类号： H01F706

CPC分类号： G01P1/026 ,  B29C45/14655 ,  G01P1/00 ,  G01P3/487 ,  G01P3/488 ,  Y10T29/4902 ,  Y10T29/49121 ,  Y10T29/49158

摘要： A method of manufacturing a rotation sensor is provided. In the method, an insert conductor having a predetermined shape and having at least a connector terminal and a conversion device terminal is provided. The insert conductor is insert-molded in a resin base such that at least the connector terminal and the conversion device terminal of the insert conductor remain exposed from the resin base. A resin connector part is molded such that the resin connector part encircles the connector terminal. Also, a magnetoelectric conversion device is connected to the conversion device terminal of the insert conductor, and positioning parts are provided at a tip of the resin base. In addition, the magnetoelectric conversion device is sandwiched between the positioning parts to securely hold the magnetoelectric conversion device, and a press fit part is formed at the tip of the resin base. Also, an output terminal of the magnetoelectric conversion device is pressed against the conversion device terminal of the insert conductor with the press fit part.

摘要翻译： 提供一种制造旋转传感器的方法。 在该方法中，提供具有预定形状并且至少具有连接器端子和转换装置端子的插入导体。 插入导体嵌入成型在树脂基底中，使得至少插入导体的连接器端子和转换装置端子保持暴露于树脂基部。 树脂连接器部件被模制成使得树脂连接器部分环绕连接器端子。 此外，磁电转换装置连接到插入导体的转换装置端子，并且定位部分设置在树脂基部的尖端处。 此外，磁电转换装置夹在定位部件之间，以牢固地保持磁电转换装置，并且在树脂基座的尖端处形成压配合部分。 此外，磁压转换装置的输出端子通过压配合部分压靠在插入导体的转换装置端子上。

公开(公告)号：US6140813A

公开(公告)日：2000-10-31

申请号：US742488

申请日：1996-11-01

申请人： Hiroshi Sakanoue ,  Noriaki Hayashi ,  Izuru Shinjo ,  Naoki Hiraoka ,  Wataru Fukui ,  Yutaka Ohashi

发明人： Hiroshi Sakanoue ,  Noriaki Hayashi ,  Izuru Shinjo ,  Naoki Hiraoka ,  Wataru Fukui ,  Yutaka Ohashi

IPC分类号： G01B7/30 ,  G01B7/00 ,  G01D5/245 ,  G01P3/487 ,  H01H36/00 ,  G01P3/44 ,  G01D5/14 ,  G01P3/488

CPC分类号： G01P3/487

摘要： A magnetic object motion sensor which can operate with high accuracy not only when a magnetic object moves at high speeds but also even when it moves at low speeds, which can be produced with a greater production tolerance and a greater dimensional tolerance. The magnetic object motion sensor includes: magnetoelectric transducer elements disposed opposite protrusions of a moving magnetic object; a magnet for generating bias magnetic flux toward the magnetoelectric transducer elements; unbalanced bias producing means for producing imbalance in the magnetic field sensitivity between the magnetoelectric transducer elements; a differential amplifier for amplifying in a differential fashion the electric signals output by the magnetoelectric transducer elements; a waveform shaping circuit for converting the differential signal output by the differential amplifier to a pulse signal corresponding to the edges of the magnetic material protrusion; the unbalanced bias producing means producing a difference in the amplitude of the magnetic flux density between that applied to one element of the pair of magnetoelectric transducer elements and that applied to the other element so that the difference in the electric signal level corresponding to the difference in the amplitude of the magnetic flux density becomes greater than the hysteresis of the waveform shaping circuit, thereby, in effect, introducing imbalance in the sensitivity between the magnetoelectric transducer elements.

摘要翻译： 磁性物体运动传感器可以高精度地操作，不仅当磁性物体以高速移动时，而且即使当其以低速移动时，也可以以更大的制造公差和更大的尺寸公差产生。 磁性物体运动传感器包括：与运动的磁性物体相对的突起设置的磁电换能器元件; 用于向磁电换能器元件产生偏磁通的磁体; 用于产生磁电换能器元件之间的磁场灵敏度不平衡的不平衡偏压产生装置; 用于以差分方式放大由电磁换能器元件输出的电信号的差分放大器; 波形整形电路，用于将由差分放大器输出的差分信号转换为对应于磁性材料突起的边缘的脉冲信号; 所述不平衡偏置产生装置产生施加到所述一对磁电换能器元件中的一个元件之间的磁通密度的振幅和施加到另一元件的磁通密度的差异，使得与所述另一元件相对应的电信号电平的差异 磁通密度的振幅变得大于波形整形电路的滞后，从而实际上引入了磁电换能器元件之间的灵敏度不平衡。

公开(公告)号：US6061895A

公开(公告)日：2000-05-16

申请号：US825088

申请日：1997-03-27

申请人： Izuru Shinjo ,  Noriaki Hayashi ,  Naoki Hiraoka ,  Wataru Fukui ,  Yutaka Ohashi

发明人： Izuru Shinjo ,  Noriaki Hayashi ,  Naoki Hiraoka ,  Wataru Fukui ,  Yutaka Ohashi

IPC分类号： G01B7/00 ,  G01B7/30 ,  G01D5/245 ,  G01P1/00 ,  G01P1/02 ,  G01P3/487 ,  G01P3/488 ,  H01F41/02

CPC分类号： G01P1/026 ,  B29C45/14655 ,  G01P1/00 ,  G01P3/487 ,  G01P3/488 ,  Y10T29/4902 ,  Y10T29/49121 ,  Y10T29/49158

摘要： A method for manufacturing an inexpensive rotation sensor having excellent performance, high workability, and high reliability is provided. In the method, the rotation sensor is manufactured by providing an insert conductor having a predetermined shape and insert-molding the insert conductor in a resin base such that at least a connector terminal and an conversion device terminal of the insert conductor remains exposed from the resin base. Also, a resin connector part is molded after the resin base is molded such that the resin connector part encircles the connector terminal.

摘要翻译： 提供一种具有优异的性能，高加工性和高可靠性的便宜的旋转传感器的制造方法。 在该方法中，旋转传感器通过提供具有预定形状的插入导体和将插入导体嵌入成型在树脂基底中来制造，使得至少插入导体的连接器端子和转换装置端子保持暴露于树脂 基础。 此外，在树脂基底模制之后，树脂连接器部分被模制，使得树脂连接器部分环绕连接器端子。

公开(公告)号：US06977497B1

公开(公告)日：2005-12-20

申请号：US10990391

申请日：2004-11-18

申请人： Masahiro Yokotani ,  Izuru Shinjo

发明人： Masahiro Yokotani ,  Izuru Shinjo

IPC分类号： G01B7/14 ,  G01B7/30 ,  G01D5/14 ,  G01D5/16 ,  G01P3/54

CPC分类号： G01D5/147

摘要： A magnetoelectric converting element is constructed by four or more magnetic resistance segments symmetrically arranged at a predetermined pitch with respect to the central line of a magnet perpendicular to the rotating direction of a magnetic moving body. The magnetizing direction of the magnet is set to the direction perpendicular to the direction opposed to the magnetic moving body. Further, 0.7P≦X≦P and P≦Y≦1.6P are set when the size of the magnet in the moving direction of the magnetic moving body is set to X and the size of the magnet in the direction opposed to the magnetic moving body is set to Y and the pitch of the magnetic resistance segments at both ends constituting the magnetoelectric converting element is set to P.

摘要翻译： 磁电转换元件由相对于垂直于磁性移动体的旋转方向的磁体的中心线以预定间距对称布置的四个或更多个磁阻部分构成。 磁体的磁化方向被设定为与与磁性移动体相反的方向垂直的方向。 此外，当磁体在磁性移动体的移动方向上的尺寸设定为X并且磁体在相反方向上的尺寸设定为0.7P <= X <= P且P <= Y <= 1.6P 磁体移动体的距离设定为Y，构成磁电转换元件的两端的磁阻段的间距设为P.

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：US06392407B1

公开(公告)日：2002-05-21

申请号：US09994679

申请日：2001-11-28

申请人： Naohiro Mishiro ,  Izuru Shinjo ,  Masahiro Yokotani

发明人： Naohiro Mishiro ,  Izuru Shinjo ,  Masahiro Yokotani

IPC分类号： G01B730

CPC分类号： G01D5/145

摘要： In a rotation angle detecting device, a circuit scale thereof is reduced and a manufacturing cost thereof is lowered. The rotation angle detecting device is arranged by comprising: a bridge circuit for converting a magnetic field change of an MR element into a voltage change; a 1st differential amplifying circuit for amplifying the signal outputted from the bridge circuit; an AC coupling circuit for removing a DC component from the output signal of the 1st differential amplifying circuit; a 2nd differential amplifying circuit for amplifying the signal output from the AC coupling circuit; a comparing circuit for comparing the signal outputted from the 2nd differential amplifying circuit with a reference value to thereby output any one of a signal of “0” and a signal of “1”; an output circuit for waveform-shaping the signal outputted from the comparing circuit; and an initiating circuit including a 1st to a 3rd transistors, and a differentiating circuit for driving the 1st to 3rd transistors; in which both the 1st and the 2nd transistors are connected to the AC coupling circuit so as to converge the output signal of the AC coupling circuit into a reference voltage immediately after a power supply is turned ON; and in which the 3rd transistor is connected to the comparing circuit so as to also converge the input signal of the comparing circuit into an AC coupling reference level.

摘要翻译： 在旋转角度检测装置中，其电路规模减小，制造成本降低。 所述旋转角度检测装置的特征在于包括：用于将MR元件的磁场变化转换为电压变化的桥接电路; 第一差分放大电路，用于放大从桥式电路输出的信号; AC耦合电路，用于从第一差分放大电路的输出信号中去除DC分量; 用于放大从AC耦合电路输出的信号的第二差分放大电路; 比较电路，用于将从第二差分放大电路输出的信号与参考值进行比较，从而输出信号“0”和信号“1”中的任何一个; 用于对从比较电路输出的信号进行波形整形的输出电路; 以及包括第1至第3晶体管的启动电路和用于驱动第1至第3晶体管的微分电路; 其中第一和第二晶体管都连接到AC耦合电路，以便在电源接通之后立即将AC耦合电路的输出信号收敛成参考电压; 并且其中第三晶体管连接到比较电路，以便也将比较电路的输入信号收敛成AC耦合参考电平。