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1. 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。

2. 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。

3. 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。

4. 发明申请

US20130127457A1 MAGNETIC SUBSTANCE DETECTION DEVICE 有权
标题翻译：磁性物质检测装置
公开(公告)号：US20130127457A1
公开(公告)日：2013-05-23
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： G01R33/09
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。

5. 发明申请

US20150015245A1 MULTI-ROTATION ENCODER 审中-公开
标题翻译：多重编码器
公开(公告)号：US20150015245A1
公开(公告)日：2015-01-15
申请号：US14380289
申请日：2013-01-08
申请人： Jin Inoue , Takeshi Musha , Hiroshi Nishizawa , Hajime Nakajima , Ryosuke Takeuchi , Tatsuya Ito , Takashi Hirai , Hiroshi Nagata
发明人： Jin Inoue , Takeshi Musha , Hiroshi Nishizawa , Hajime Nakajima , Ryosuke Takeuchi , Tatsuya Ito , Takashi Hirai , Hiroshi Nagata
IPC分类号： G01B7/30 , G01D5/12
CPC分类号： G01B7/30 , G01D5/12 , G01D5/2013
摘要： A battery-less multi-rotation encoder including detection coils with the Barkhausen effect includes a rotation detection mechanism and a signal processing circuit. The detection coils generate voltage pulses with different positive and negative signs, and transmit them to the signal processing circuit, and the signal processing circuit includes a controller and an adder. The controller can set states of the detection coils to be High or Low and to maintain them at High or Low, based on the positive and negative signs of the respective voltage pulses and no voltage pulse being generated therefrom. The controller is configured to store the states of the respective detection coils in a memory. The adder can update a number of rotations according to the changes in the states of the respective detection coils. The signal processing circuit can determine the rotational angle of a rotational shaft within about 1/4 rotation unit.
摘要翻译：包括具有巴克豪森效应的检测线圈的无电池多旋转编码器包括旋转检测机构和信号处理电路。检测线圈产生具有不同正和负符号的电压脉冲，并将其发送到信号处理电路，信号处理电路包括一个控制器和一个加法器。基于各个电压脉冲的正负号，控制器可以将检测线圈的状态设置为高或低，并将其保持在高或低，并且不产生电压脉冲。控制器被配置为将各个检测线圈的状态存储在存储器中。加法器可以根据各检测线圈的状态的变化来更新转数。信号处理电路可以确定旋转轴在大约1/4旋转单元内的旋转角度。

6. 发明申请

US20110291646A1 ORIGIN POSITION SIGNAL DETECTOR 审中-公开
标题翻译：原位置信号检测器
公开(公告)号：US20110291646A1
公开(公告)日：2011-12-01
申请号：US12933319
申请日：2009-02-25
申请人： Takeshi Musha , Hiroshi Nishizawa , Hajime Nakajima , Yoichi Omura , Koichi Takamune , Norio Takamune
发明人： Takeshi Musha , Hiroshi Nishizawa , Hajime Nakajima , Yoichi Omura , Koichi Takamune , Norio Takamune
IPC分类号： G01R33/00
CPC分类号： G01D5/2457
摘要： An origin position signal detector comprising: a rotary or linear scale (1) which includes an incremental track (3) magnetized at equal intervals and an origin position detection track (4) for detecting an origin position, and a magnetic sensor (5) which detects magnetic fields from the scale. The origin position detection track includes an origin position magnetized portion (11) and side magnetized portions (12) provided on both sides of the origin position magnetized portion (11) and magnetized with magnetization in the same direction at one or more positions as the origin position magnetized portion (11).
摘要翻译：原点位置信号检测器，包括：旋转或线性刻度（1），其包括以等间隔磁化的增量轨迹（3）和用于检测原点位置的原点位置检测轨道（4）和磁传感器（5）检测刻度盘的磁场。原点位置检测轨道包括原点位置磁化部分（11）和设置在原点位置磁化部分（11）两侧的侧磁化部分（12），并在与原点位于一个或多个位置处以相同方向的磁化被磁化位置磁化部分（11）。

7. 发明申请

US20070187581A1 Optical encoder 有权
标题翻译：光学编码器
公开(公告)号：US20070187581A1
公开(公告)日：2007-08-16
申请号：US10598450
申请日：2004-08-05
申请人： Yoichi Ohmura , Toru Oka , Hajime Nakajima
发明人： Yoichi Ohmura , Toru Oka , Hajime Nakajima
IPC分类号： G01D5/34 , G01D5/36
CPC分类号： G01D5/38
摘要： An optical encoder includes an incoherent light source; a first grating, which is an amplitude grating having a first grating period, for spatial amplitude modulation of the incoherent light from the light source; a second grating, which is a phase grating having a second grating period, for spatial phase modulation of light from the first grating; a third grating, which is an amplitude grating having a third grating period, for spatial amplitude modulation of light from the second grating; and a light detecting element for detecting lights from the third grating. The encoder detects relative displacement between the respective gratings. The optical transfer function from the light source to the light detecting element is enhanced, and the efficiency in utilizing light is improved.
摘要翻译：光学编码器包括非相干光源; 第一光栅，其是具有第一光栅周期的幅度光栅，用于来自光源的非相干光的空间幅度调制; 第二光栅，其是具有第二光栅周期的相位光栅，用于来自第一光栅的光的空间相位调制; 第三光栅，其是具有第三光栅周期的幅度光栅，用于来自第二光栅的光的空间幅度调制; 以及用于检测来自第三光栅的光的光检测元件。编码器检测各个光栅之间的相对位移。提高了从光源到光检测元件的光传递函数，提高了利用光的效率。

8. 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。

9. 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.

10. 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.

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