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1. 发明授权

US09664535B2 Rotation number detector 有权
公开(公告)号：US09664535B2
公开(公告)日：2017-05-30
申请号：US14655837
申请日：2013-02-22
申请人： Yoshinao Tatei , Takeshi Musha , Hajime Nakajima , Takashi Okamuro , Masanori Nimura
发明人： Yoshinao Tatei , Takeshi Musha , Hajime Nakajima , Takashi Okamuro , Masanori Nimura
IPC分类号： G01B7/14 , G01B7/30 , G01D5/244 , G01D5/20 , G01P3/481 , G01D5/14
CPC分类号： G01D5/244 , G01D5/145 , G01D5/2006 , G01P3/4815
摘要： A rotation number detector according to an embodiment is a rotation number detector that detects the number of rotations of a magnet attached to a rotating body by using a power generation unit. The power generation unit includes N (N is a natural number equal to or larger than 1) power generation elements, each including a magnetic wire in which magnetization reversal occurs due to a large Barkhausen effect and a pickup coil that is wound around the magnetic wire. The magnetic wire is longer than a wound portion of the pickup coil in an extension direction of the magnetic wire of the power generation elements. The magnetic wire is set above a rotation center of the magnet.

2. 发明授权

US09631953B2 Rotation number detector 有权
公开(公告)号：US09631953B2
公开(公告)日：2017-04-25
申请号：US14655837
申请日：2013-02-22
申请人： Yoshinao Tatei , Takeshi Musha , Hajime Nakajima , Takashi Okamuro , Masanori Nimura
发明人： Yoshinao Tatei , Takeshi Musha , Hajime Nakajima , Takashi Okamuro , Masanori Nimura
IPC分类号： G01B7/14 , G01B7/30 , G01D5/244 , G01D5/20 , G01P3/481 , G01D5/14
摘要： A rotation number detector according to an embodiment is a rotation number detector that detects the number of rotations of a magnet attached to a rotating body by using a power generation unit. The power generation unit includes N (N is a natural number equal to or larger than 1) power generation elements, each including a magnetic wire in which magnetization reversal occurs due to a large Barkhausen effect and a pickup coil that is wound around the magnetic wire. The magnetic wire is longer than a wound portion of the pickup coil in an extension direction of the magnetic wire of the power generation elements. The magnetic wire is set above a rotation center of the magnet.

3. 发明申请

US20130320201A1 OPTICAL ENCODER 有权
标题翻译：光学编码器
公开(公告)号：US20130320201A1
公开(公告)日：2013-12-05
申请号：US14000736
申请日：2011-11-30
申请人： Takuya Noguchi , Hajime Nakajima , Takeshi Musha , Yoshinao Tatei , Takashi Hirai
发明人： Takuya Noguchi , Hajime Nakajima , Takeshi Musha , Yoshinao Tatei , Takashi Hirai
IPC分类号： G01D5/347
CPC分类号： G01D5/3473 , G01D5/34784
摘要： An optical encoder includes: an optical scale having periodical optical patterns and can be relatively and angularly displaced; a projector for irradiating the optical scale with light; a light receiver for receiving light from the optical scale; and a calculator for calculating an absolute rotation angle θ of the optical scale in accordance with a signal from the light receiver. The optical patterns include a plurality of light shielding portions and a plurality of light transmitting portions, each of the portions being located alternately. When a pitch of an n-th light shielding portion in a predetermined circumferential direction is denoted by Pn and a width of the n-th light shielding portion is denoted by Wn, a transmissivity T(θn) corresponding to an angle θn of the n-th light shielding portion and the pitch Pn of the light shielding portion satisfy predetermined equations, and the width Wn of the light shielding portion in the optical pattern varies in accordance with a function of the pitch Pn of the light shielding portion.
摘要翻译：光学编码器包括：具有周期性光学图案并且可以相对且角度位移的光学秤; 用于用光照射光标的投影仪; 用于接收来自光学刻度尺的光的光接收器; 以及用于根据来自光接收器的信号计算光刻尺的绝对旋转角度θ的计算器。光学图案包括多个遮光部分和多个透光部分，每个部分交替设置。当第n个遮光部分在预定圆周方向上的间距由Pn表示，并且第n个遮光部分的宽度由Wn表示时，与n的角度相对应的透射率T（thetan）遮光部的节距Pn满足预定的方程，光学图案中的遮光部的宽度Wn根据遮光部的间距Pn的函数而变化。

4. 发明授权

US08829421B2 Optical encoder 有权
标题翻译：光学编码器
公开(公告)号：US08829421B2
公开(公告)日：2014-09-09
申请号：US14000736
申请日：2011-11-30
申请人： Takuya Noguchi , Hajime Nakajima , Takeshi Musha , Yoshinao Tatei , Takashi Hirai
发明人： Takuya Noguchi , Hajime Nakajima , Takeshi Musha , Yoshinao Tatei , Takashi Hirai
IPC分类号： G01D5/34 , G01D5/347
CPC分类号： G01D5/3473 , G01D5/34784
摘要： An optical encoder includes: an optical scale having periodical optical patterns and can be relatively and angularly displaced; a projector for irradiating the optical scale with light; a light receiver for receiving light from the optical scale; and a calculator for calculating an absolute rotation angle θ of the optical scale in accordance with a signal from the light receiver. The optical patterns include a plurality of light shielding portions and a plurality of light transmitting portions, each of the portions being located alternately. When a pitch of an n-th light shielding portion in a predetermined circumferential direction is denoted by Pn and a width of the n-th light shielding portion is denoted by Wn, a transmissivity T(θn) corresponding to an angle θn of the n-th light shielding portion and the pitch Pn of the light shielding portion satisfy predetermined equations, and the width Wn of the light shielding portion in the optical pattern varies in accordance with a function of the pitch Pn of the light shielding portion.
摘要翻译：光学编码器包括：具有周期性光学图案并且可以相对且角度位移的光学秤; 用于用光照射光标的投影仪; 用于接收来自光学刻度尺的光的光接收器; 和用于计算绝对旋转角度的计算器; 根据来自光接收器的信号。光学图案包括多个遮光部分和多个透光部分，每个部分交替设置。当以Pn表示第n个遮光部分的预定圆周方向的间距，并将第n个遮光部分的宽度表示为Wn时，对应于角度θ的透射率T（＆amp; t; n）第n个遮光部分的n和遮光部分的间距Pn满足预定的方程式，并且光学图案中的遮光部分的宽度Wn根据遮光部分的间距Pn的函数而变化。

5. 发明授权

US09234738B2 Rotation-angle detection device 有权
标题翻译：旋转角度检测装置
公开(公告)号：US09234738B2
公开(公告)日：2016-01-12
申请号：US13879731
申请日：2010-11-18
申请人： Takumi Asano , Takeshi Musha , Hiroshi Nishizawa , Takashi Okamuro , Noriyasu Hasegawa
发明人： Takumi Asano , Takeshi Musha , Hiroshi Nishizawa , Takashi Okamuro , Noriyasu Hasegawa
IPC分类号： G01B7/30 , G01D5/14 , G01D5/245
CPC分类号： G01B7/30 , G01D5/145 , G01D5/2451
摘要： A detection track includes a first detection element group that includes a plurality of first magnetic resistance elements arranged at a pitch λ/(2n) when an order to cancel target harmonic components among a plurality of harmonic components superimposed on a fundamental component of a detection signal for multi-pole magnetic pattern is assumed as n, and a second detection element group that includes a plurality of second magnetic resistance elements arranged at the pitch λ/(2n), a plurality of first dummy magnetic resistance elements arranged among the first magnetic resistance elements, and a plurality of second dummy magnetic resistance elements arranged among the second magnetic resistance elements. Pitches between adjacent magnetic resistance elements among the first magnetic resistance elements and the first dummy magnetic resistance element are equivalent to one another, and pitches between adjacent magnetic resistance elements among the second magnetic resistance elements and the second dummy magnetic resistance element are equivalent to one another.
摘要翻译：检测轨道包括：第一检测元件组，其包括以叠加在检测信号的基本分量上的多个谐波分量中的目标谐波分量取消的次序，以间距λ/（2n）排列的多个第一磁阻元件假定为n极的多极磁性图案，以及包括以间距λ/（2n）排列的多个第二磁阻元件的第二检测元件组，设置在第一磁阻中的多个第一伪磁阻元件元件和布置在第二磁阻元件之间的多个第二虚设磁阻元件。第一磁阻元件和第一伪磁阻元件之间的相邻磁阻元件之间的间距彼此相等，第二磁阻元件和第二虚磁阻元件中的相邻磁阻元件之间的间距彼此相等。

6. 发明申请

US20130200885A1 ROTATION-ANGLE DETECTION DEVICE 有权
标题翻译：旋转角度检测装置
公开(公告)号：US20130200885A1
公开(公告)日：2013-08-08
申请号：US13879731
申请日：2010-11-18
申请人： Takumi Asano , Takeshi Musha , Hiroshi Nishizawa , Takashi Okamuro , Noriyasu Hasegawa
发明人： Takumi Asano , Takeshi Musha , Hiroshi Nishizawa , Takashi Okamuro , Noriyasu Hasegawa
IPC分类号： G01B7/30
CPC分类号： G01B7/30 , G01D5/145 , G01D5/2451
摘要： A detection track includes a first detection element group that includes a plurality of first magnetic resistance elements arranged at a pitch λ/(2n) when an order to cancel target harmonic components among a plurality of harmonic components superimposed on a fundamental component of a detection signal for multi-pole magnetic pattern is assumed as n, and a second detection element group that includes a plurality of second magnetic resistance elements arranged at the pitch λ/(2n), a plurality of first dummy magnetic resistance elements arranged among the first magnetic resistance elements, and a plurality of second dummy magnetic resistance elements arranged among the second magnetic resistance elements. Pitches between adjacent magnetic resistance elements among the first magnetic resistance elements and the first dummy magnetic resistance element are equivalent to one another, and pitches between adjacent magnetic resistance elements among the second magnetic resistance elements and the second dummy magnetic resistance element are equivalent to one another.
摘要翻译：检测轨道包括第一检测元件组，该第一检测元件组包括以叠加在检测信号的基本分量上的多个谐波分量中的目标谐波分量的取消顺序，以间距λ/（2n）排列的多个第一磁阻元件假定为n极的多极磁性图案，以及包括以间距λ/（2n）排列的多个第二磁阻元件的第二检测元件组，设置在第一磁阻中的多个第一虚设磁阻元件元件和布置在第二磁阻元件之间的多个第二虚设磁阻元件。第一磁阻元件和第一伪磁阻元件之间的相邻磁阻元件之间的间距彼此相等，第二磁阻元件和第二虚磁阻元件中的相邻磁阻元件之间的间距彼此相等。

7. 发明申请

US20100052664A1 MAGNETIC ROTATIONAL-ANGLE DETECTOR 有权
标题翻译：磁力旋转角度检测器
公开(公告)号：US20100052664A1
公开(公告)日：2010-03-04
申请号：US12596729
申请日：2008-04-17
申请人： Hiroshi Nishizawa , Hajime Nakajima , Takeshi Musha , Yoichi Ohmura
发明人： Hiroshi Nishizawa , Hajime Nakajima , Takeshi Musha , Yoichi Ohmura
IPC分类号： G01B7/30
CPC分类号： G01D5/2451
摘要： The present invention provides a magnetic rotational-angle detector capable of detecting a position and a rotational angle of a rotating member with excellent accuracy. The magnetic rotational-angle detector includes device arrays (51, 52) constituted by a plurality of magnetic sensor devices which are arranged to cancel the n-th order harmonic components by each other. In the device arrays, the magnetic sensor devices corresponding to each other are arranged such that they are spaced apart with a distance of (2m+1)λ, and the arrangement of all the magnetic sensor devices and their orientations with respect to a power-supply terminal and a ground terminal are axisymmetrical about a straight line (2b) passing through a barycenric position (59) of all the magnetic sensor devices which is positioned on a straight line along a radial direction of a rotating drum (1).
摘要翻译：本发明提供一种能够以高精度检测旋转部件的位置和旋转角度的磁旋转角度检测装置。磁旋转角度检测器包括由多个磁传感器装置构成的装置阵列（51,52），其被布置为相互抵消n次谐波分量。在器件阵列中，彼此对应的磁传感器装置被布置为使得它们以（2m + 1）λ的距离间隔开，并且所有磁传感器装置的布置及其相对于功率 - 供电端子和接地端子围绕通过沿着旋转鼓（1）的径向位于直线上的所有磁传感器装置的重心位置（59）的直线（2b）的轴对称。

8. 发明授权

US08134359B2 Magnetic rotational-angle detector 有权
标题翻译：磁旋转角度检测器
公开(公告)号：US08134359B2
公开(公告)日：2012-03-13
申请号：US12596729
申请日：2008-04-17
申请人： Hiroshi Nishizawa , Hajime Nakajima , Takeshi Musha , Yoichi Ohmura
发明人： Hiroshi Nishizawa , Hajime Nakajima , Takeshi Musha , Yoichi Ohmura
IPC分类号： G01B7/14
CPC分类号： G01D5/2451
摘要： The present invention provides a magnetic rotational-angle detector capable of detecting a position and a rotational angle of a rotating member with excellent accuracy. The magnetic rotational-angle detector includes device arrays (51, 52) constituted by a plurality of magnetic sensor devices which are arranged to cancel the n-th order harmonic components by each other. In the device arrays, the magnetic sensor devices corresponding to each other are arranged such that they are spaced apart with a distance of (2m+1)λ, and the arrangement of all the magnetic sensor devices and their orientations with respect to a power-supply terminal and a ground terminal are axisymmetrical about a straight line (2b) passing through a barycenric position (59) of all the magnetic sensor devices which is positioned on a straight line along a radial direction of a rotating drum (1).
摘要翻译：本发明提供一种能够以高精度检测旋转部件的位置和旋转角度的磁旋转角度检测装置。磁旋转角度检测器包括由多个磁传感器装置构成的装置阵列（51,52），其被布置为相互抵消n次谐波分量。在器件阵列中，彼此对应的磁传感器装置被布置为使得它们以（2m + 1）λ的距离间隔开，并且所有磁传感器装置的布置及其相对于功率 - 供电端子和接地端子围绕通过沿着旋转鼓（1）的径向位于直线上的所有磁传感器装置的重心位置（59）的直线（2b）的轴对称。

9. 发明授权

US08415610B2 Optical encoder having a single signal track and an optical detecting part with sine and cosine signals 有权
标题翻译：具有单个信号轨道的光学编码器和具有正弦和余弦信号的光学检测部分
公开(公告)号：US08415610B2
公开(公告)日：2013-04-09
申请号：US12990508
申请日：2009-06-03
申请人： Hajime Nakajima , Takuya Noguchi , Takeshi Musha , Youichi Omura , Toshiro Nakashima , Tatsuya Nagatani , Takashi Iwamoto
发明人： Hajime Nakajima , Takuya Noguchi , Takeshi Musha , Youichi Omura , Toshiro Nakashima , Tatsuya Nagatani , Takashi Iwamoto
IPC分类号： G01D5/34
CPC分类号： G01D5/347 , G01D5/3473
摘要： Present invention provides an optical encoder capable of improving the precision of an interpolation angle in a single signal track, in an encoder of sine-wave angle interpolation type. The optical encoder includes a waveform, in which a phase-modulated wave is superimposed in a predetermined period over a sine-wave of a fundamental period, as a signal track (103), and an optical detector (104) for extracting the sine signal and the cosine signal of the phase-modulated wave. An operation unit (106) operates electric angles individually from the output signals of a first optical detector pair and a second optical detector pair belonging to the optical detector, and determines the sum and difference of the electric angles, thereby acquiring the electric angle and the phase-modulated wave of the fundamental period.
摘要翻译：本发明提供了一种在正弦波角插值类型的编码器中能够提高单个信号轨道内插角的精度的光学编码器。光学编码器包括波形，其中在基本周期的正弦波上以预定周期叠加相位调制波作为信号轨道（103），以及用于提取正弦信号的光学检测器（104）和相位调制波的余弦信号。操作单元（106）从属于光检测器的第一光检测器对和第二光检测器对的输出信号分别操作电角度，并且确定电角度的和差，从而获得电角度和基波周期的相位调制波。

10. 发明授权

US09222993B2 Magnetic substance detection device 有权
标题翻译：磁性物质检测装置
公开(公告)号：US09222993B2
公开(公告)日：2015-12-29
申请号：US13813058
申请日：2011-05-12
申请人： Takeshi Musha , Jin Inoue , Hiroshi Nishizawa , Hajime Nakajima , Tomokazu Ogomi
发明人： Takeshi Musha , Jin Inoue , Hiroshi Nishizawa , Hajime Nakajima , Tomokazu Ogomi
IPC分类号： B60Q1/00 , G08B21/00 , G01R33/09 , B82Y25/00
CPC分类号： G01R33/095 , B82Y25/00 , G01R33/093
摘要： The invention is related to a magnetic substance detection device for detecting a magnetic substance, including: a magnetoresistive sensor arranged in the middle of a movement path of the magnetic substance; and a lower magnet in which a south pole and a north pole are arrayed along the movement direction of the magnetic substance; and a upper magnet in which a north pole and a south pole are arrayed along the movement direction of the magnetic substance. The lower and upper magnets are arranged with the movement path of the magnetic substance interposed so that the south pole of the lower magnet and the north pole of the upper magnet are opposed to each other, and the north pole of the lower magnet and the south pole of the upper magnet are opposed to each other, whereby the magnetic substance can be detected with high accuracy.
摘要翻译：本发明涉及一种用于检测磁性物质的磁性物质检测装置，包括：磁阻传感器，布置在磁性物质的运动路径的中间; 以及下磁体，其中南极和北极沿着磁性物质的移动方向排列; 以及沿磁性物质的移动方向排列北极和南极的上磁体。下磁铁和上磁体被布置成使磁性物质的移动路径被插入，使得下磁体的南极和上磁体的北极彼此相对，并且下磁体的北极和南上磁体的磁极彼此相对，从而可以高精度地检测磁性物质。

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