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1. 发明授权

US6076408A Fluid pressure measuring apparatus for measuring pressure by using element for providing pressure 失效
标题翻译：用于通过使用用于提供压力的元件来测量压力的流体压力测量装置
公开(公告)号：US6076408A
公开(公告)日：2000-06-20
申请号：US56095
申请日：1998-04-07
申请人： Takeshi Matsubara , Yujiro Kitaide
发明人： Takeshi Matsubara , Yujiro Kitaide
IPC分类号： G01L1/16 , B81B3/00 , G01L9/08 , G01L19/00 , G01L7/00 , G01L9/06
CPC分类号： G01L9/08 , B41J2/14233 , G01L19/0023 , B41J2002/14354
摘要： A pressure in a pressurizing chamber of a micromachine apparatus for transferring a fluid is measured inexpensively under an actual-use or a similar condition. A piezoelectric element used as an actuator for applying a pressure to the fluid in the pressurizing chamber is also used as a pressure sensor. A charge amplifier is used to measure the amount of charge Q.sub.1 applied to an electrode of the piezoelectric element when the piezoelectric element is driven while the pressurizing chamber filled with the fluid, and the amount of charges Q.sub.2 when the piezoelectric element is driven while the chamber contains no fluid. The obtained signals are inputted to a storage and operation processing device to determine (Q.sub.1 -Q.sub.2) to determine the pressure of the fluid in the pressurizing chamber. The piezoelectric element or capacitor for the purposes of comparison can be used to simultaneously measure Q.sub.1 and Q.sub.2.
摘要翻译：在实际使用或类似条件下，廉价地测量用于传送流体的微机械装置的加压室中的压力。作为用于向加压室内的流体施加压力的致动器的压电元件也被用作压力传感器。电荷放大器用于测量在压电元件被驱动时加压压元件的电极施加到压电元件的电荷量，同时加压腔充满流体，以及当压电元件被驱动时的电荷量Q2 不含流体。所获得的信号被输入到存储和操作处理装置，以确定（Q1-Q2）以确定加压室中的流体的压力。用于比较的压电元件或电容器可用于同时测量Q1和Q2。

2. 发明授权

US07218494B2 Overload current protection device using magnetic impedance element 失效
标题翻译：使用磁阻元件的过载电流保护装置
公开(公告)号：US07218494B2
公开(公告)日：2007-05-15
申请号：US10468035
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： H02H3/08
CPC分类号： H02H1/0007 , G01R33/02 , H02H1/043 , H02H1/06 , H02H7/085
摘要： An overload current protection device for cutting off power applied from a power supply to a load (3) such as a motor by means of a contactor (switch) (2) at overloading. With the configuration, an element (40) having a magnetic impedance effect as current detection units (4a, 4b, 4c) is used to thereby expand a current detection range by eliminating magnetic saturation due to a core, a problem with a conventional current transformer, thereby providing at low costs an overload current protection device having a wide current detection range.
摘要翻译：一种过载电流保护装置，用于通过接触器（开关）（2）在电力过载时切断从电源施加到诸如电动机的负载（3）的电力。利用该结构，使用具有作为电流检测单元（4a，4b，4c）的磁阻抗效应的元件（40），从而通过消除由于磁芯的磁饱和而扩大电流检测范围，传统的电流互感器，从而以低成本提供具有宽电流检测范围的过载电流保护装置。

3. 发明授权

US07085116B2 Overload current protection device using magnetic impedance element 失效
标题翻译：使用磁阻元件的过载电流保护装置
公开(公告)号：US07085116B2
公开(公告)日：2006-08-01
申请号：US10468045
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： H02H3/08 , H02H9/02
CPC分类号： G01R33/02 , H02H7/085
摘要： In an overload current protection device for cutting off power from a power supply to a load (3) such as a motor by means of a contactor (switch) (2) at overloading, an MI element having a magnetic impedance (MI) effect as current detectors (4a, 4b, and 4c) is installed at a position capable of detecting a current flowing through the secondary winding of power supply transformers (5a, 5b, and 5c) that generate a control power supply to thereby reduce costs without using a constant voltage power supply and expand a current detection range by eliminating magnetic saturation due to a core, a problem with a conventional current transformer, thereby providing at low costs a high-precision overload current protection device having a wide current detection range.
摘要翻译：在过负载电流保护装置中，通过接触器（开关）（2）在过载时将电力从电源切断到诸如电动机的电动机（3），具有磁阻抗（MI）效应的MI元件作为电流检测器（4a，4b和4c）安装在能够检测流过电源变压器（5a，5b和5c）的次级绕组的电流的位置，其产生控制电源从而在不使用恒压电源的情况下降低成本，并且通过消除由于核心引起的磁饱和而扩大电流检测范围，这是传统电流互感器的问题，从而以低成本提供具有宽电流的高精度过载电流保护装置检测范围。

4. 发明授权

US06984989B2 Current sensor and overload current protective device therewith 失效
标题翻译：电流传感器和过载电流保护装置
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。

5. 发明授权

US06879153B2 Magnetic sensor 失效
标题翻译：磁传感器
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。

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