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1. 发明专利

JP2006250921A Electric current sensor and electric current detection method 有权
标题翻译：电流传感器和电流检测方法
公开(公告)号：JP2006250921A
公开(公告)日：2006-09-21
申请号：JP2006025182
申请日：2006-02-02
申请人： Tohoku Electric Power Co Inc , Uchihashi Estec Co Ltd , 内橋エステック株式会社 , 東北電力株式会社
发明人： TOYODA KAZUMI , IZAWA KAZUYUKI , TAKAGI SAKAE
IPC分类号： G01R15/20
摘要： PROBLEM TO BE SOLVED: To provide an electric current sensor for highly accurately detecting that an electric current flows in a printed wiring board by using magnetic impedance effect elements. SOLUTION: This electric current sensor is used for scanning a surface of an apparatus or equipment to detect an electric current flowing in the surface of the apparatus or equipment. The two magnetic impedance effect elements 1a and 1b are provided so that they are parallel disposed and their magnetism sensing directions are opposite to each other. Outputs of the respective effect elements are demodulated by demodulation circuits 3a and 3b. The current sensor provided with a demodulation/amplification circuit for differentially amplifying demodulation outputs thereof by a differential amplification circuit 4 is moved across a current path under detection. External noises such as earth magnetism are eliminated based on the symmetry of sensor outputs with the current path between while eliminating internal noises occurring in the demodulation circuits by means of differential amplification, making it possible to measure the electric current with high accuracy. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种电流传感器，用于通过使用磁阻效应元件来高精度地检测电流在印刷线路板中流动的电流传感器。解决方案：该电流传感器用于扫描设备或设备的表面以检测在设备或设备的表面中流动的电流。两个磁阻抗效应元件1a和1b被设置为使得它们平行布置，并且它们的磁感应方向彼此相反。各个效应元件的输出由解调电路3a和3b解调。具有用于差分放大电路4的解调输出的解调/放大电路的电流传感器在检测到的电流路径上移动。基于传感器输出的对称性，通过差分放大消除了解调电路中发生的内部噪声，从而消除了诸如地磁的外部噪声，从而可以高精度地测量电流。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2005249678A Sensor for sensing conductor defective in electric wire 有权
标题翻译：传感器用于电线传感器缺陷
公开(公告)号：JP2005249678A
公开(公告)日：2005-09-15
申请号：JP2004062700
申请日：2004-03-05
申请人： Tohoku Electric Power Co Inc , Uchihashi Estec Co Ltd , 内橋エステック株式会社 , 東北電力株式会社
发明人： TOYODA KAZUMI , IZAWA KAZUYUKI , TAKAGI SAKAE
IPC分类号： G01B7/34 , G01B7/00 , G01N27/82
摘要： PROBLEM TO BE SOLVED: To realize a simple operation by which a defect is sensed from changes in a round circuit magnetic field distribution within a substantially narrow range, in the case a conductor element defective in one of twisted conductors in an electric wire is sensed from the changes in the round circuit magnetic field distribution on the basis of current flowing the twisted conductors, with respect to the round circuit magnetic field distribution of nondefective conductor elements. SOLUTION: A change in the round circuit magnetic field distribution of a region isolated from a defective region, or a change in the round circuit magnetic field distribution in a range of approximate one pitch of twists in the twisted conductors is detected. In a sensor to be used, for example, two magnetic impedance effect elements are arranged around the electric wire at equal distances from the center of the electric wire so as to be spaced from each other through 180 degrees and connected in series so that their polarities become reverse to each other in their magnetically sensitive directions and so that their magnetically sensitive directions are perpendicular to a circumference being concentric with the electric wire. Sensor outputs are output from the magnetic impedance effect elements connected in series. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了实现简单的操作，通过该操作可以在基本上窄的范围内的圆形电磁场分布的变化中感测到缺陷，在电线中的扭绞导体之一中的导体元件有缺陷的情况下相对于无损导体元件的圆回路磁场分布，基于流过扭绞导体的电流，从圆形回路磁场分布的变化中检测出。解决方案：检测在扭曲导体中大致一个螺距的范围内，从缺陷区隔开的区域的圆形回路磁场分布的变化或圆形回路磁场分布的变化。在要使用的传感器中，例如，两根磁阻效应元件围绕电线设置在与电线中心相等的距离处，以便彼此间隔180度并串联连接，使得它们的极性在它们的磁敏方向上彼此相反，并且使得它们的磁敏方向垂直于与电线同心的圆周。传感器输出从串联连接的磁阻效应元件输出。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2007322125A Magnetic impedance effect sensor and method for detecting external magnetic field 审中-公开
标题翻译：磁阻效应传感器及检测外部磁场的方法
公开(公告)号：JP2007322125A
公开(公告)日：2007-12-13
申请号：JP2006149097
申请日：2006-05-30
申请人： Sii Nanotechnology Inc , Tohoku Electric Power Co Inc , Uchihashi Estec Co Ltd , エスアイアイ・ナノテクノロジー株式会社 , 内橋エステック株式会社 , 東北電力株式会社
发明人： TOYODA KAZUMI , IZAWA KAZUYUKI , TAKAGI SAKAE , NAKAYAMA SATORU
IPC分类号： G01R33/06
摘要： PROBLEM TO BE SOLVED: To provide a magnetic impedance effect sensor capable of accurately detecting external magnetic field, by satisfactorily eliminating the influence of external noise and offset changes, and to provide an external magnetic field detection method by the use of the magnetic impedance effect sensor.
SOLUTION: The terminal voltage of a magnetic impedance effect element 1 is demodulated with a detector 3 under the action of the external magnetic field and its detected output is amplified with an operational amplifier 4. An output terminal 5, a negative feedback coil 6, and a control coil 7 are included in the sensor. A filter 7 which extracts a specific frequency component from the output of the operational amplifier circuit 4 and feeds them back to the control coil 7, and a magnetic field for canceling the external magnetic field component of the specific frequency is made to act, and a detection output under the cancellation is set as the detected output.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供能够通过令人满意地消除外部噪声和偏移变化的影响来精确地检测外部磁场的磁阻抗效应传感器，并且通过使用磁性来提供外部磁场检测方法阻抗效应传感器。解决方案：磁阻抗效应元件1的端子电压在外部磁场的作用下用检测器3解调，其检测输出用运算放大器4放大。输出端子5，负反馈线圈 6，控制线圈7包含在传感器中。滤波器7从运算放大器电路4的输出提取特定频率分量并将其馈送到控制线圈7，并且使用于消除特定频率的外部磁场分量的磁场作用，并且检测输出被设置为检测输出。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2006329855A Degradation diagnosis device of iron-based structure 有权
标题翻译：基于铁素体结构的降解诊断装置
公开(公告)号：JP2006329855A
公开(公告)日：2006-12-07
申请号：JP2005155212
申请日：2005-05-27
申请人： Sii Nanotechnology Inc , Tohoku Electric Power Co Inc , Uchihashi Estec Co Ltd , エスアイアイ・ナノテクノロジー株式会社 , 内橋エステック株式会社 , 東北電力株式会社
发明人： TOYODA KAZUMI , IZAWA KAZUYUKI , TAKAGI SAKAE , NAKAYAMA SATORU , IKEDA MASANORI
IPC分类号： G01N27/82
摘要： PROBLEM TO BE SOLVED: To provide a degradation diagnostic device of an iron-based structure, capable of easily inspecting a defect, such as corrosion on the inner surface of a wall of the iron-based structure from the outer surface of the wall with ample accuracy.
SOLUTION: A defect detector has a detection circuit that has a coil for a biased magnetic field on a magnetic impedance effect element and detects the output of the element through a detection circuit, and makes it scan while the magnetic impedance effect element is close to an inspected surface. The defect detector has a flexible board section elastically deformed along the inspected surface, and the magnetic impedance effect element and coil for biased magnetic field are mounted to the flexible board section.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种铁基结构的劣化诊断装置，能够容易地从铁基结构的外表面检测铁基结构的壁的内表面的腐蚀等缺陷墙壁具有足够的精度。解决方案：缺陷检测器具有检测电路，该检测电路具有用于磁阻抗效应元件上的偏置磁场的线圈，并且通过检测电路检测元件的输出，并且在磁阻抗效应元件为靠近被检查的表面。缺陷检测器具有沿检查面弹性变形的柔性基板部，并且用于偏置磁场的磁阻效应元件和线圈安装到柔性板部。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2006250922A Electric current sensor 有权
标题翻译：电流传感器
公开(公告)号：JP2006250922A
公开(公告)日：2006-09-21
申请号：JP2006025184
申请日：2006-02-02
申请人： Tohoku Electric Power Co Inc , Uchihashi Estec Co Ltd , 内橋エステック株式会社 , 東北電力株式会社
发明人： TOYODA KAZUMI , IZAWA KAZUYUKI , TAKAGI SAKAE
IPC分类号： G01R15/20
摘要： PROBLEM TO BE SOLVED: To provide an electric current sensor for easily detecting deterioration in insulators, etc. by detecting a magnetic field caused by an electric current flowing through the insulators, etc. while well eliminating the effect of internal/external noises. SOLUTION: This sensor is put to use in the vicinity of a surface of an apparatus or equipment for detecting an electric current flowing in a surface of the apparatus or equipment. Two magnetic impedance effect elements 1ma and 1mb (m = 1 to n) are parallel disposed with their magnetism sensing directions made reverse to each other. Outputs of the respective effect elements are demodulated by demodulation circuits 3ma and 3mb (m = 1 to n). Demodulation outputs thereof are differentially amplified by arithmetic differential amplification circuits 40m (m = 1 to n) in sensor units Cm (m = 1 to n), with output ends thereof lumped together by an adder 50. The internal noises (noises that occur owing to temperature change, etc. in circuit elements such as diodes in an exciting power-supply circuit and the respective demodulation circuits) acting as in-phase inputs with respect to differential amplification can be canceled out. The external noises such as an earth magnetism component can be easily eliminated since the external noises hardly change with location and substantially do not change if the position of the electric current sensor is changed. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种电流传感器，用于通过检测由流过绝缘体的电流引起的磁场等来容易地检测绝缘体的劣化等，同时很好地消除了内部/外部噪声的影响。解决方案：该传感器在用于检测在设备或设备的表面中流动的电流的装置或设备的表面附近使用。两个磁阻效应元件1ma和1mb（m = 1至n）并联布置，其磁感测方向彼此相反。各个效应元件的输出由解调电路3ma和3mb（m = 1至n）解调。其解调输出由传感器单元Cm（m = 1至n）中的算术差分放大电路40m（m = 1至n）进行差分放大，其输出端由加法器50集中在一起。内部噪声（由于可以消除用作差分放大的同相输入的电路元件，例如在激励电源电路中的二极管和相应的解调电路中的温度变化等。由于外部噪声几乎不随位置而变化，因此如果电流传感器的位置改变，则可以容易地消除诸如地磁部件的外部噪声。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2005249677A Sensor for detecting conductor defect of electric wire 有权
标题翻译：用于检测电线导体缺陷的传感器
公开(公告)号：JP2005249677A
公开(公告)日：2005-09-15
申请号：JP2004062699
申请日：2004-03-05
申请人： Tohoku Electric Power Co Inc , Uchihashi Estec Co Ltd , 内橋エステック株式会社 , 東北電力株式会社
发明人： TOYODA KAZUMI , IZAWA KAZUYUKI , TAKAGI SAKAE
IPC分类号： G01R31/02 , G01N27/82 , G01R33/02 , G01R33/12
摘要： PROBLEM TO BE SOLVED: To improve sensor detection accuracy and achieve compact size through the use of a magnetic impedance effect element for a sensor element in a sensor used for a method for detecting conductor defects of electric wires on the basis of changes in distributions of magnetic fields of a circumferential circuit to magnetic fields of a reference circumferential circuit at the absence of conductor defects on the basis of a conductor current through the electric wires. SOLUTION: The magnetic impedance effect element is used for the sensor element 1. Output characteristics based on the element are made to be linear characteristics of which the polarity is determinable. A maximum magnetic-sensitive direction of the magnetic impedance effect element 1 is turned in a direction at a right angle to a concentric circumferential direction of an electric wire 8. A component in the direction of an outer circumferential normal line of the electric wire of magnetic fields of the circumferential circuit acting on the sensor element is made sensitive to magnetism by deviations of the center of a cross section of a conductor path of a stranded conductor due to defects of the stranded conductor. By high detection resolution based on the magnetic impedance effect element even when the magnetic-sensitive component is small, it is possible to secure highly accurate detection. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提高传感器检测精度并通过使用用于传感器元件的磁阻效应元件来提高传感器检测精度，所述传感器元件用于根据电线的变化来检测电线的导体缺陷的方法基于通过电线的导体电流，在没有导体缺陷的情况下，周向电路的磁场分布到参考圆周电路的磁场。解决方案：磁阻抗效应元件用于传感器元件1.基于该元件的输出特性被制成极性可确定的线性特性。磁阻效应元件1的最大磁敏方向在与电线8的同心圆周方向成直角的方向上转动。磁性电线的外周法线方向的分量作用在传感器元件上的周向回路的场由于由于绞合导体的缺陷导致的绞合导体的导体路径的横截面的中心的偏差，对磁性敏感。即使在磁敏元件小的情况下，通过基于磁阻效应元件的高检测分辨率，可以确保高精度的检测。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2006329632A Nondestructive inspection device and non-destructive inspection method using it 审中-公开
标题翻译：非结构性检查装置和非破坏性检查方法
公开(公告)号：JP2006329632A
公开(公告)日：2006-12-07
申请号：JP2005148903
申请日：2005-05-23
申请人： Sii Nanotechnology Inc , Tohoku Electric Power Co Inc , エスアイアイ・ナノテクノロジー株式会社 , 東北電力株式会社
发明人： NAKAYAMA SATORU , IKEDA MASANORI , ODAWARA NARIKAZU , IZAWA KAZUYUKI , TAKAGI SAKAE
IPC分类号： G01N27/82 , G01R33/035 , G01R33/12
摘要： PROBLEM TO BE SOLVED: To solve the problem wherein standoff is not kept constant with respect to a measuring target having a three-dimensional shape in conventional planar scanning and the sensitivity during inspection is not constant.
SOLUTION: The shape of a sample to be inspected having a three-dimensional shape is extracted and, on the basis of the extracted shape data, a highly sensitive magnetic sensor 1 moves on the sample to be inspected at the position definite from the surface of the sample to be inspected so as to hold a definite direction and continuously detects the magnetism of the sample to be inspected in a non-contact state to obtain the magnetic distribution or the like of the measuring target to perform nondestructive inspection.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了解决在常规平面扫描中相对于具有三维形状的测量对象而言，间隙不保持恒定的问题，并且检查期间的灵敏度不是恒定的。解决方案：提取具有三维形状的待检查样品的形状，并且基于提取的形状数据，高灵敏度的磁性传感器1在待检测样品上移动，定位于要检查的样品的表面以保持确定的方向，并且以非接触状态连续地检测要检查的样品的磁性，以获得测量对象的磁分布等，以进行非破坏性检查。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2005331262A Non-destructive inspection method and non-destructive inspection device 审中-公开
标题翻译：非破坏性检查方法和非破坏性检查装置
公开(公告)号：JP2005331262A
公开(公告)日：2005-12-02
申请号：JP2004147730
申请日：2004-05-18
申请人： Tohoku Electric Power Co Inc , 東北電力株式会社
发明人： IZAWA KAZUYUKI , TAKAGI SAKAE
IPC分类号： G01N27/82
摘要： PROBLEM TO BE SOLVED: To provide a non-destructive inspection device capable of detecting the damage occurring in the welded part of a welded structure by simple operation without receiving the roughening effect of crystal particles.
SOLUTION: The surface of a specimen 100 is successively scanned by the high-sensitivity magnetic sensor 11a of a magnetic measuring part 11 driven by a scanning drive part 12 and the intensity of a magnetic field at every scanning position is edited into a two-dimensional image in an image processing part 15 to display the two-dimensional image on the screen of a monitoring part 16 to calculate the damage position in the depth direction of a region recognized and indicated as a damage place on the basis of the past measuring result related to a material of the same permeability accumulated in a database part 14 and a numerical value calculating formula predetermined in order to calculate a depth position in a numerical value processing part 19. The calculated coordinate position is edited on the image in a damage position editing part 21 to be displayed on a screen and/or outputted to recording paper. The high-sensitivity magnetic sensor 11a is either one of a superconducting quantum interference device, a magnetic impedance element sensor and a flux gate type magnetic sensor.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种无损检测装置，能够通过简单的操作检测焊接结构的焊接部分的损伤，而不会受到结晶颗粒的粗糙化作用。解决方案：通过由扫描驱动部分12驱动的磁性测量部分11的高灵敏度磁传感器11a连续地扫描样本100的表面，并将每个扫描位置处的磁场强度编辑成在图像处理部分15中的二维图像，以在监视部分16的屏幕上显示二维图像，以计算基于过去识别并指示为损坏位置的区域的深度方向上的损坏位置与数据库部分14中积累的相同磁导率的材料相关的测量结果和预定的数值计算公式，以计算数值处理部分19中的深度位置。计算出的坐标位置在损伤图像上进行编辑位置编辑部分21在屏幕上显示和/或输出到记录纸。高灵敏度磁传感器11a是超导量子干涉器件，磁阻抗元件传感器和磁通门型磁传感器中的一种。版权所有（C）2006，JPO＆NCIPI

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