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公开(公告)号：US07265541B1
公开(公告)日：2007-09-04
申请号：US11466560
申请日：2006-08-23
申请人： Masahiro Yokotani , Naoki Hiraoka
发明人： Masahiro Yokotani , Naoki Hiraoka
IPC分类号： G01B7/30
CPC分类号： G01D5/2451 , G01D5/145 , G01R33/072
摘要： The magnetic sensor in the invention includes a detecting section that detects a change of magnetic flux due to a movement of the magnetic movable, comparator circuits constituting a converting section that converts a change of magnetic flux detected by the detecting section into an electric amount, and a D-FF circuit device, in a sensor unit having a power-supplying power terminal VB, a ground terminal GND and an output terminal VOUT. A current control section is provided to change the amount of current flowing through at least one of the power terminal and the ground terminal, correspondingly to a moving direction of the magnetic movable. Thus, a moving direction of the magnetic movable can be determined depending upon the amount of current.
摘要翻译： 本发明的磁传感器包括：检测部，其检测由构成转换部的磁性可动的比较器电路的移动引起的磁通变化;转换部，其将由检测部检测出的磁通的变化转换为电量;以及 在具有供电电源端子VB，接地端子GND和输出端子VOUT的传感器单元中的D-FF电路装置。 提供电流控制部分，用于相应于磁性可移动的移动方向改变流过电源端子和接地端子中的至少一个的电流量。 因此，可以根据电流量确定磁性移动体的移动方向。
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公开(公告)号：US20070200561A1
公开(公告)日：2007-08-30
申请号：US11484766
申请日：2006-07-12
申请人： Masahiro Yokotani , Naoki Hiraoka
发明人： Masahiro Yokotani , Naoki Hiraoka
IPC分类号： G01B7/30
CPC分类号： G01P13/045 , G01P3/488
摘要： The magnetic sensor in the invention is arranged to detect a change of magnetic field caused by a movement of the magnetic movable by a magnetic sensor element arranged with a gap to the magnetic movable, to convert the detected change of magnetic field by first and second bridge circuits into electric signals, to generate first and second rectangular-wave signals by first and second comparator circuits depending upon the electric signals, and to form a signal having at least four levels by a signal forming circuit, thereby detecting a moving direction of the magnetic movable depending upon a level-change order in the signal. This makes it possible to detect a rotating direction of the magnetic movable rapidly and correctly.
摘要翻译： 本发明的磁传感器被设置为检测由磁性传感器元件移动的可移动的磁性元件所引起的磁场的变化，所述磁性传感器元件具有间隙的磁性可移动，以便通过第一和第二桥接器来检测检测到的磁场变化 电路转换为电信号，根据电信号由第一和第二比较器电路产生第一和第二矩形波信号，并且通过信号形成电路形成具有至少四个电平的信号，从而检测磁性的移动方向 根据信号中的电平变化顺序可移动。 这使得可以快速且正确地检测磁性移动的旋转方向。
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33.发明授权Linear positional displacement detector for detecting linear displacement of a permanent magnet as a change in direction of magnetic sensor unit 失效用于检测永磁体的线性位移的线性位移位移检测器，作为磁性传感器单元的方向变化
公开(公告)号：US5570015A
公开(公告)日：1996-10-29
申请号：US357075
申请日：1994-12-15
CPC分类号： G01D5/145 , G01B7/02 , Y10T137/8242
摘要： A linear positional displacement detector including a magnetic sensor unit (23) having a magnetic sensing surface formed by a ferromagnetic magnetoresistance element (23a) having a predetermined pattern, and an elongated permanent magnet (22) having a magnetic pole face (22a) at each end. The permanent magnet (22) is movable along its longitudinal axis and magnetically coupled with the magnetic sensor unit (23) with the longitudinal axis positioned on an extended surface of the magnetic sensing surface (23b). A positional displacement of the permanent magnet (22) along the longitudinal axis is detected as a change in the direction of a magnetic flux crossing in parallel the magnetic sensing surface (23b).
摘要翻译： 一种线性位置检测器，包括具有由具有预定图案的铁磁性磁阻元件（23a）形成的磁感测表面的磁传感器单元（23），以及每个具有磁极面（22a）的细长永磁体（22） 结束。 永磁体（22）可沿其纵向轴线移动并且与磁传感器单元（23）磁耦合，纵轴位于磁感测表面（23b）的延伸表面上。 检测永磁体（22）沿着纵轴的位置偏移，作为与磁感测面（23b）并联的磁通交叉方向的变化。
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公开(公告)号：US07982456B2
公开(公告)日：2011-07-19
申请号：US12277691
申请日：2008-11-25
IPC分类号： G01B7/30
CPC分类号： G01P13/045 , G01D11/245 , G01P3/487
摘要： In a magnetic detection apparatus, a magnetic detection sensor generates a sensor output signal whose high level and low level have different potentials in accordance with the moving direction of a magnetic moving object, and a computer unit includes three comparator circuits and detects the output signal of the magnetic detection sensor with three levels of comparison threshold values, so that the moving direction of the magnetic moving object can be detected accurately without any delay.
摘要翻译： 在磁检测装置中，磁检测传感器根据磁性运动物体的移动方向产生高电平和低电平具有不同电位的传感器输出信号，并且计算机单元包括三个比较电路，并检测输出信号 具有三级比较阈值的磁检测传感器，使得能够准确地检测磁性移动物体的移动方向而没有任何延迟。
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35.发明授权公开(公告)号：US07468604B2
公开(公告)日：2008-12-23
申请号：US11645520
申请日：2006-12-27
申请人： Masahiro Yokotani , Naoki Hiraoka
发明人： Masahiro Yokotani , Naoki Hiraoka
IPC分类号： G01B7/30
CPC分类号： G01D5/24438
摘要： A magnetic detector, wherein the magnetic/electric conversion element is constituted by at least six segments symmetrically arranged in a direction in which the magnetic moving body rotates maintaining a predetermined pitch with respect to the center line of the magnet, first and second bridge circuits are constituted so as to produce outputs accompanying the rotation of the magnetic moving body, and a third bridge circuit is constituted so as to produce an output accompanying the rotation of the magnetic moving body, and wherein a comparison level of a comparator circuit that shapes the waveform of a differential output signal of the first and second bridge circuits is adjusted relying upon an output signal of the third bridge circuit.
摘要翻译： 一种磁检测器，其中磁/电转换元件由至少六个片段构成，所述至少六个片段沿磁性移动体旋转的方向对称地保持相对于磁体的中心线的预定间距，第一和第二桥接电路是 构成为产生伴随着磁性体的旋转的输出，第三桥接电路被构成为产生伴随着磁性体的旋转的输出，并且，比较电路的比较电平， 根据第三桥接电路的输出信号调整第一和第二桥接电路的差分输出信号。
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公开(公告)号：US20070114991A1
公开(公告)日：2007-05-24
申请号：US11377292
申请日：2006-03-17
摘要： A magnetic detection device includes a magnetic moving unit, a magnet that is arranged to face the magnetic moving unit and that applies a magnetic field to the magnetic moving unit, and a magnetoelectric conversion element that is arranged to face the magnetic moving unit and includes at least one segment that detects a change in the applied magnetic field due to rotation of the magnetic moving unit, wherein the magnetic moving unit has a shape that generates an asymmetrical change in magnetic field to the magnetoelectric conversion element in accordance with the direction of rotation of the magnetic moving unit. Thus, a magnetic detection device that can detect the direction of rotation easily and reliably is provided.
摘要翻译： 磁检测装置包括：磁性移动单元，被配置为面对磁性移动单元并且向磁性移动单元施加磁场的磁体;以及磁电转换元件，被配置为面对磁性移动单元并且包括在 至少一个段，其检测由于所述磁性移动单元的旋转而施加的磁场的变化，其中所述磁性移动单元具有根据所述磁性移动单元的旋转方向产生与所述磁电转换元件的磁场的不对称变化的形状 磁性移动单元。 因此，能够容易且可靠地检测旋转方向的磁检测装置。
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公开(公告)号：US07157904B1
公开(公告)日：2007-01-02
申请号：US11447104
申请日：2006-06-06
申请人： Masahiro Yokotani , Naoki Hiraoka
发明人： Masahiro Yokotani , Naoki Hiraoka
IPC分类号： G01B7/30
CPC分类号： G01D5/147
摘要： A magnetic detection apparatus is able to make a selection between AC coupling and DC coupling thereby to improve the accuracy of a final output signal corresponding to a magnetic movable element, thus making it possible to ensure excellent detection performance. The magnetic detection apparatus with a sensor composed of magnetoresistive elements (2a, 2b) for detecting the strength of a magnetic field includes a first comparison circuit (31) that has a first comparison level (VR1), and waveform shapes the amplitude of a detection signal (C) from the magnetoresistive elements (2a, 2b) through DC coupling, a second comparison circuit (32) that has a second comparison level (VR2), and waveform shapes the amplitude of the detection signal C through DC coupling, and a third comparison circuit (33) that has a third comparison level VR3, and waveform shapes the amplitude of the detection signal C after AC coupling.
摘要翻译： 磁检测装置能够进行交流耦合和直流耦合之间的选择，从而提高对应于磁性可移动元件的最终输出信号的精度，从而可以确保优异的检测性能。 具有由用于检测磁场强度的磁阻元件（2a，2b）组成的传感器的磁检测装置包括具有第一比较电平（VR 1）的第一比较电路（31），波形使振幅 通过DC耦合来自磁阻元件（2a，2b）的检测信号（C）;具有第二比较电平（VR2）的第二比较电路（32），以及波形使检测信号C 以及具有第三比较电平VR 3的第三比较电路（33），并且在AC耦合之后波形对检测信号C的幅度进行整形。
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38.发明授权Sensing device for detecting the angular displacement and relative position of a member of magnetic material 失效用于检测磁性材料构件的角位移和相对位置的感测装置
公开(公告)号：US5982171A
公开(公告)日：1999-11-09
申请号：US742504
申请日：1996-11-01
IPC分类号： G01P3/488 , F02D35/00 , F02D45/00 , G01D5/14 , G01D5/16 , G01D5/18 , G01D5/245 , G01R33/09 , G01B7/30 , F02P7/067 , G01P3/481
CPC分类号： G01D5/147
摘要： A sensing device capable of outputting a correct signal precisely corresponding to a particular position (angle) of, for example a protruding or recessed portion of a rotating member made of a magnetic material as soon as the electric power of the sensing device is turned on. The sensing device includes: a magnet for generating a magnetic field; a rotary member of magnetic material for changing the magnetic field generated by the magnet, the rotary member being disposed at a predetermined distance apart from the magnet; a giant magnetoresistance device which changes in resistance in response to the magnetic field whose magnitude is changed by the rotary member of magnetic material; and a differential amplifier for detecting the displacement of said rotary member of magnetic material and also the relative position of said rotary member of magnetic material with respect to said giant magnetoresistance device when said rotary member of magnetic material is at rest, on the basis of the output signal of said giant magnetoresistance device.
摘要翻译： 一旦感测装置的电力接通，能够输出精确地对应于由磁性材料制成的旋转构件的旋转构件的突出或凹陷部分的特定位置（角度）精确对准的信号。 感测装置包括：用于产生磁场的磁体; 用于改变由磁体产生的磁场的磁性材料的旋转构件，旋转构件设置在与磁体隔开预定距离处; 一种巨磁阻装置，其响应于由磁性材料的旋转构件改变其大小的磁场而改变电阻; 以及差分放大器，用于当所述磁性材料的所述旋转构件静止时，检测所述磁性材料的所述旋转构件的位移以及所述磁性材料的旋转构件相对于所述巨磁阻装置的相对位置， 所述巨磁电阻器件的输出信号。
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39.发明授权Magnetoresistance sensing device with increased magnetic field detection efficiency 失效具有增加磁场检测效率的磁阻检测装置
公开(公告)号：US5789919A
公开(公告)日：1998-08-04
申请号：US741690
申请日：1996-10-31
IPC分类号： G01P3/488 , F02D35/00 , F02D45/00 , G01D5/14 , G01D5/16 , G01D5/18 , G01D5/245 , G01R33/09 , G01V3/08 , G01B7/14 , F02B53/06 , G01R33/06
摘要： The invention provides a sensing device capable of outputting a high-accuracy signal precisely corresponding to a particular position (angle) of a rotating member made of a magnetic material without being disturbed by external noise. The sensing device includes: a magnet for generating a magnetic field; a rotating member made of a magnetic material, for changing the magnetic field generated by the magnet, the rotating member being disposed a predetermined distance apart from the magnet; and a giant magnetoresistance device whose resistance changes in response to the change in the magnetic field caused by the rotating member of magnetic material, wherein the size L.sub.3 of the magnetic field sensing plane of the giant magnetoresistance device is set to a value less than the smallest value of the dimensions L.sub.1 and L.sub.2 of the protruding and recessed portions of the rotating member of magnetic material, that is, the size L.sub.3 of the magnetic field sensing plane is set so that the following conditions are satisfied: L.sub.3 .ltoreq.L.sub.1 and L.sub.3 .ltoreq.L.sub.2.
摘要翻译： 本发明提供一种感测装置，其能够输出精确对应于由磁性材料制成的旋转构件的特定位置（角度）而不被外部噪声干扰的高精度信号。 感测装置包括：用于产生磁场的磁体; 由磁性材料制成的用于改变由磁体产生的磁场的旋转构件，旋转构件与磁体隔开预定距离; 以及响应于由磁性材料的旋转构件引起的磁场变化的电阻变化的巨磁电阻装置，其中巨磁电阻装置的磁场感测平面的尺寸L3被设定为小于最小值 磁性材料的旋转构件的突出和凹陷部分的尺寸L1和L2的值，即磁场感测平面的尺寸L3被设置为使得满足以下条件：L3
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40.发明授权
公开(公告)号：US5133318A
公开(公告)日：1992-07-28
申请号：US700982
申请日：1991-05-16
申请人： Masahiro Yokotani , Mitsuru Koiwa
发明人： Masahiro Yokotani , Mitsuru Koiwa
CPC分类号： F02P9/005
摘要： A governor apparatus for an internal combustion engine of a capacitor discharge type capable of effectively preventing after-burning due to excessive fuel supply and building abnormal combustion, etc., during the high-speed operation of the engine. To this end, ignition is intermittently performed or periodically stopped and performed when the number of revolutions per minute of the engine is greater than a predetermined value.
摘要翻译： 一种电容器放电型内燃机的调速器装置，其能够在发动机的高速运转时能够有效地防止燃料供应过量和建筑物异常燃烧等引起的后燃烧。 为此，当发动机的每分钟转数大于预定值时，间歇地执行点火或周期性停止并执行。
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