公开(公告)号：US06984989B2

公开(公告)日：2006-01-10

申请号：US10468317

申请日：2002-02-14

申请人： Takahiro Kudo ,  Yujiro Kitaide ,  Kimitada Ishikawa

发明人： Takahiro Kudo ,  Yujiro Kitaide ,  Kimitada Ishikawa

IPC分类号： G01R31/28

CPC分类号： G01R15/148 ,  G01R15/18

摘要： A small, low-cost, wide-range current sensor excellent in environmental resistance and noise resistance and high in accuracy, and an application device, a DC magnetic field is applied to two magnetic elements (1a, 1b) having a magnetic impedance effect by means of a magnet (3), while a negative feedback magnetic field is applied to both elements by means of a coil (2). The variation of the magnetic field depending on the external magnetic field applied to the magnetic elements (1a, 1b) is detected by detection units (7a, 7b). The difference between the output is amplified by a differential amplifier unit (8). Thus, detection is achieved in a wide range while eliminating the influence of the noise.

摘要翻译： 一种小型，低成本的宽环境电流传感器，具有优异的耐环境性和抗噪声性和高精度，并且应用装置，DC磁场被施加到具有磁阻抗的两个磁性元件（1a，1b） 通过磁体（3）的作用，同时通过线圈（2）将负反馈磁场施加到两个元件。 通过检测单元（7a，7b）检测施加到磁性元件（1a，1b）的外部磁场的磁场变化。 输出之间的差异由差分放大器单元（8）放大。 因此，在消除噪声的影响的同时，在宽范围内实现检测。

公开(公告)号：US20050194519A1

公开(公告)日：2005-09-08

申请号：US11071498

申请日：2005-03-02

申请人： Morio Wada ,  Akira Miura ,  Tsuyoshi Yakihara ,  Masayuki Suehiro ,  Daisuke Hayashi ,  Shinji Iio ,  Toshimasa Umezawa ,  Takahiro Kudo ,  Takashi Mogi ,  Shoujirou Araki ,  Machio Dobashi ,  Katsuya Ikezawa

发明人： Morio Wada ,  Akira Miura ,  Tsuyoshi Yakihara ,  Masayuki Suehiro ,  Daisuke Hayashi ,  Shinji Iio ,  Toshimasa Umezawa ,  Takahiro Kudo ,  Takashi Mogi ,  Shoujirou Araki ,  Machio Dobashi ,  Katsuya Ikezawa

IPC分类号： G02F3/00 ,  H01J40/14 ,  H01L27/115 ,  H01L27/14 ,  H01L31/10 ,  H01L31/167 ,  H03K19/14

CPC分类号： H03K3/42 ,  H03K19/14

摘要： An optical logic device performs a logic operation on a plurality of input light signals. The optical logic device has a photoelectric conversion portion, in which photoreceivers for receiving input light signals are provided in parallel, that outputs an electric signal obtained by adding up outputs of the photoreceivers, and a comparator that compares a voltage level of the electric signal outputted from the photoelectric conversion portion with a predetermined voltage level.

摘要翻译： 光逻辑器件对多个输入光信号执行逻辑运算。 光逻辑器件具有光电转换部分，其中并联提供用于接收输入光信号的光接收器，其输出通过将光接收器的输出相加获得的电信号;以及比较器，其比较输出的电信号的电压电平 具有预定电压电平的光电转换部分。

公开(公告)号：US06879153B2

公开(公告)日：2005-04-12

申请号：US10478975

申请日：2002-06-04

申请人： Takahiro Kudo ,  Yujiro Kitaide

发明人： Takahiro Kudo ,  Yujiro Kitaide

IPC分类号： G01R33/02 ,  G11B5/33 ,  H01L43/00 ,  G01R33/00

CPC分类号： G01R33/02

摘要： To provide a magnetism detection apparatus that is small and low in cost and power consumption, a biasing coil 4 and a negative-feedback coil are integrated with a magnetic impedance element having a magnetic impedance effect in a resinous structure. The magnetism detection apparatus has a reduced magnetic resistance between the magnetic impedance element and the coil, thereby making it possible to apply a bias magnetic field and a negative-feedback magnetic field to the magnetic impedance element with a reduced power consumption.

摘要翻译： 为了提供低成本和低功耗的磁检测装置，将偏置线圈4和负反馈线圈与具有树脂结构的磁阻抗效应的磁阻抗元件集成。 磁性检测装置在磁阻抗元件和线圈之间具有减小的磁阻，从而可以以降低的功耗向磁阻抗元件施加偏置磁场和负反馈磁场。

公开(公告)号：US5869770A

公开(公告)日：1999-02-09

申请号：US852682

申请日：1997-05-07

申请人： Hiroyuki Yoshimura ,  Takahiro Kudo

发明人： Hiroyuki Yoshimura ,  Takahiro Kudo

IPC分类号： G01F1/84 ,  G01H1/00

CPC分类号： G01F1/8431 ,  G01F1/8436 ,  G01F1/8472 ,  G01H1/00

摘要： A first sample hold circuit or S/H, for holding an amplitude value at a predetermined phase of pipe vibration waveform, detected by both sensors and, a second S/H for re-holding the value at the predetermined phase, a comparator for comparing second S/H output with a set value, an differential amplifier for amplifying a difference value thus obtained, and an exciter circuit for increasing and decreasing the vibration amplitude of the pipe responsive to this amplified difference value are provided so as not to cause any change in exciting frequency characteristic, even when outside vibrations are added to the pipe. The present invention enables oscillation waveform to be less distorted and a more stable operation to be achieved even when responsibility, relative to outside vibrations, is increased.

摘要翻译： 第一采样保持电路或S / H，用于保持由两个传感器检测的管道振动波形的预定相位处的振幅值，以及用于在预定相位重新保持该值的第二S / H，用于比较的比较器 提供具有设定值的第二S / H输出，用于放大由此获得的差值的差分放大器，以及响应于该放大差值而增加和减少管道的振幅的激励器电路，以便不引起任何变化 即使外部振动被添加到管道中，在激发频率特性中也是如此。 本发明使振荡波形变得更小，即使相对于外部振动的负载增加，也能够实现更稳定的操作。

公开(公告)号：US5375473A

公开(公告)日：1994-12-27

申请号：US110582

申请日：1993-08-24

申请人： Kyoichi Ikeda ,  Tetsuya Watanabe ,  Hideo Tsukamoto ,  Takahiro Kudo ,  Kouji Nagai ,  Satoshi Fukuhara

发明人： Kyoichi Ikeda ,  Tetsuya Watanabe ,  Hideo Tsukamoto ,  Takahiro Kudo ,  Kouji Nagai ,  Satoshi Fukuhara

IPC分类号： G01L9/00 ,  G01L19/06 ,  G01L9/04

CPC分类号： G01L19/0618 ,  G01L19/0636 ,  G01L9/0042 ,  G01L9/0055

摘要： A semiconductor type differential pressure measurement apparatus is disclosed comprising a measuring diaphragm having its periphery fixed, and two measuring chambers, each having a predetermined spacing along both surfaces of the measuring diaphragm, and which detects differential pressure within allowable limits of measurement. When an overpressure is applied, the diaphragm is stopped by a wall of a measuring chamber to prevent the diaphragm from being damaged by overpressure, so that no additional mechanism is required to prevent damage from overpressure. One embodiment utilizes an additional chamber and overhang to reduce overpressure. Another embodiment utilizes a measuring chamber having the two sides of the diaphragm exposed to the ambient to eliminate need for a pressure resistant casing. In a further embodiment, injected impurities serve as a terminal.

摘要翻译： 本发明公开了一种半导体型差压测量装置，其包括其周边固定的测量膜片和两个测量室，每个测量室沿着测量膜片的两个表面具有预定的间隔，并且在允许的测量限度内检测差压。 当施加过压时，隔膜被测量室的壁阻挡，以防止隔膜被过压损坏，因此不需要额外的机构来防止过压损坏。 一个实施例利用附加的腔室和突出部来降低过压。 另一个实施例使用具有暴露于环境的隔膜的两侧的测量室，以消除对耐压外壳的需要。 在另一个实施方案中，注入的杂质用作终端。

公开(公告)号：US5123282A

公开(公告)日：1992-06-23

申请号：US694709

申请日：1991-05-02

申请人： Kyoichi Ikeda ,  Tetsuya Watanabe ,  Takahiro Kudo ,  Akio Fujita ,  Hideo Tsukamoto ,  Nobuaki Kohno ,  Hideaki Kuwayama

发明人： Kyoichi Ikeda ,  Tetsuya Watanabe ,  Takahiro Kudo ,  Akio Fujita ,  Hideo Tsukamoto ,  Nobuaki Kohno ,  Hideaki Kuwayama

IPC分类号： G01L9/00 ,  G01P15/08 ,  G01P15/097 ,  G01P15/10

CPC分类号： G01P15/097 ,  G01L9/0019 ,  G01P15/0802

摘要： A vibrating type pressure measuring device having good shock wave proof measuring characteristics, high frequency response, good temperature characteristics, and can be readily miniaturized, wherein pressure to be measured is applied to a silicon diaphragm provided in an internal vacant space of a housing, and a magnetic field is applied by a DC current magnetic field applying device to a vibrator beam arranged in the inside of the diaphragm, with a gap therebetween kept in vacuum, and fixed to the diaphragm at both ends, and detects the changes in natural frequency of the vibrator beam caused by the pressure to be measured. The diaphragm and/or vibrator beam are constructed so one or the other or both have rough or uneven surfaces so as to prevent any adhesion therebetween.

摘要翻译： 一种振动式压力测量装置，具有良好的抗震波测量特性，高频响应，良好的温度特性，并且可以容易地小型化，其中待测量的压力被施加到设置在壳体的内部空闲空间中的硅膜片，以及 通过直流电流磁场施加装置将磁场施加到布置在隔膜内部的振动子束，其间保持真空的间隙，并且固定在两端的隔膜上，并检测其自身频率的变化 由测量的压力引起的振动器光束。 隔膜和/或振动器梁被构造成一个或另一个或两者具有粗糙或不均匀的表面，以防止它们之间的任何粘附。