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    • 2. 发明授权
    • Zirconium liner thickness measuring method and an apparatus therefor for
a zirconium alloy tube
    • 锆衬层厚度测量方法及其锆合金管的设备
    • US4673877A
    • 1987-06-16
    • US536496
    • 1983-09-28
    • Takahide SakamotoTatsuo Hiroshima
    • Takahide SakamotoTatsuo Hiroshima
    • G01B7/06G21C17/06G01B7/10
    • G01B7/105G21C17/06
    • A method and apparatus for measuring a liner thickness of a zirconium liner provided at the inner surface of a zirconium alloy tube, the principle of measurement of which is to insert coils into the tube to generate an eddy current, detect the impedance component in the direction perpendicular to the direction of coil impedance change caused by the lift-off variation between the coils and the inner surface of tube, and obtain the liner thickness on the basis of the impedance component. In a case where the lift-off variation is larger, the impedance component in the direction of coil impedance change caused by the lift-off variation is detected, so that the component is used to correct the impedance component perpendicular to the same, thereby obtaining the liner thickness in accordance with the corrected values.
    • 一种用于测量在锆合金管的内表面上设置的锆衬层的衬套厚度的方法和装置,其测量原理是将线圈插入管中以产生涡流,检测方向上的阻抗分量 垂直于由线圈和管内表面之间的剥离变化引起的线圈阻抗变化的方向,并且基于阻抗分量获得衬垫厚度。 在剥离变化较大的情况下,检测由剥离变化引起的线圈阻抗变化方向的阻抗成分,使得该成分用于校正与其垂直的阻抗分量,从而获得 衬垫厚度根据校正值。
    • 3. 发明授权
    • Rotary probe apparatus for detecting flaws in a test object
    • 用于检测测试对象中的缺陷的旋转探测器
    • US4641092A
    • 1987-02-03
    • US510972
    • 1983-07-05
    • Takahide SakamotoTatsuo HiroshimaNoriyuki MatsubaraKenichi Miyata
    • Takahide SakamotoTatsuo HiroshimaNoriyuki MatsubaraKenichi Miyata
    • B21B38/00G01N27/90G01N27/87G01B7/14G01R33/12
    • G01N27/9053G01N27/9013B21B38/00
    • A flaw detection apparatus for detecting flaws at the outer surface of a product, such as a steel bar, wire or steel pipe, which is round in section and produced by the hot rolling, by use of a probe of non-contact type and rotating around the product to be inspected, the apparatus providing a means for suppressing vibrations of an object to be inspected, a means for measuring a distance (lift-off) between the object to be inspected and the probe, and a means for carrying out positional control on the basis of the detection result of the lift-off measurement so that the axis of rotation of probe is allowed to be coincident with the axis of object to be inspected. In a case of using the eddy current inspection for the flaw detection, two coils of standard comparison system are used and a mixed signal of a plurality of frequencies is applied to the coils so that a signal obtained by the probe coils suppresses the signal component caused by the lift-off variation and corrects the flaw signal caused by existence of the signal component, thereby eliminating the influence of lift-off variation and enabling measurement with high accuracy.
    • 一种检测设备,用于检测通过非接触式探针和旋转的,通过热轧制造的圆形截面并产生的产品的钢板,钢丝或钢管等产品的外表面的缺陷 围绕要检查的产品,该装置提供用于抑制待检查物体的振动的装置,用于测量待检查物体与探头之间的距离(剥离)的装置和用于执行位置的装置 基于剥离测量的检测结果进行控制,使得探针的旋转轴线允许与被检查物体的轴线重合。 在使用涡流检查进行缺陷检测的情况下,使用两个标准比较系统的线圈,并且将多个频率的混合信号施加到线圈,使得由探针线圈获得的信号抑制所引起的信号分量 通过剥离变化,校正由信号分量的存在引起的缺陷信号,从而消除了剥离变化的影响,并且能够高精度地进行测量。
    • 6. 发明授权
    • Impedance-to-voltage converter
    • 阻抗电压转换器
    • US06335642B1
    • 2002-01-01
    • US09381673
    • 1999-09-22
    • Tatsuo HiroshimaKoichi NakanoMuneo HaradaToshiyuki MatsumotoYoshihiro Hirota
    • Tatsuo HiroshimaKoichi NakanoMuneo HaradaToshiyuki MatsumotoYoshihiro Hirota
    • H03D100
    • G01R27/2605
    • A impedance-to-voltage converter for converting an impedance of a target to a voltage is described which comprises an operational amplifier (OP), a coaxial cable consisting a signal line and shielding element(s), and an AC signal generator. A feedback impedance circuit is connected between output and inverting terminals of the OP, and whereby a non-inverting terminal and the inverting terminal are an imaginal-short condition. One end of the signal line is connected to the inverting input terminal of the OP and the other end is connected to one electrode of the target and the AC signal generator is connected to the non-inverting input terminal of the OP. The shielding element comprises at least one shielding layer surrounding the signal line and is connected to the non-inverting input terminal of the OP, and thus the signal line and the shielding layer are the same voltage due to the imaginal-short of the input terminals of the OP, resulting in reduction of noise on the signal line.
    • 描述了用于将目标的阻抗转换为电压的阻抗 - 电压转换器,其包括运算放大器(OP),由信号线和屏蔽元件组成的同轴电缆以及AC信号发生器。 反馈阻抗电路连接在OP的输出端和反相端之间,由此非反相端和反相端都是成像短路状态。 信号线的一端连接到OP的反相输入端子,另一端连接到目标的一个电极,并且AC信号发生器连接到OP的非反相输入端子。 屏蔽元件包括围绕信号线的至少一个屏蔽层,并且连接到OP的非反相输入端子,因此由于输入端子的想象缺陷,信号线和屏蔽层是相同的电压 的OP,导致信号线上的噪声降低。
    • 7. 发明授权
    • Electrostatic capacitance sensor, electrostatic capacitance sensor component, object mounting body and object mounting apparatus
    • 静电电容传感器,静电电容传感器部件,物体安装体和物体安装装置
    • US07161360B2
    • 2007-01-09
    • US11002070
    • 2004-12-03
    • Yoshihiro HirotaToshiyuki MatsumotoTatsuo Hiroshima
    • Yoshihiro HirotaToshiyuki MatsumotoTatsuo Hiroshima
    • G01R27/26
    • H03K17/955G01D5/2405H03K2217/960765
    • An electrostatic capacitance sensor, includes an electrostatic capacitance detector, an operational amplifier in which a feedback impedance circuit is connected between an output terminal and an inverse input terminal of the operational amplifier, a signal line connected between the inverse input terminal of the operational amplifier and the electrostatic capacitance detector, an alternating-current signal generator connected to a non-inverse input terminal of the operational amplifier, and a shield for shielding at least a portion of the signal line, the shield being connected to the non-inverse input terminal of the operational amplifier and the alternating-current signal generator. The electrostatic capacitance detector includes a detecting electrode and a shield electrode. The detecting electrode includes a detector-detecting electrode for detecting an object to be detected and an electrode introducer-detecting electrode for introducing an electrode to the detector-detecting electrode. The shield electrode is connected to the shield. At least a portion of the electrode introducer-detecting electrode is shielded by the shield electrode.
    • 一种静电电容传感器,包括静电电容检测器,其中反馈阻抗电路连接在运算放大器的输出端和反相输入端之间的运算放大器,连接在运算放大器的反相输入端和 所述静电电容检测器,连接到所述运算放大器的非反相输入端的交流信号发生器和用于屏蔽所述信号线的至少一部分的屏蔽,所述屏蔽连接到所述运算放大器的非反相输入端 运算放大器和交流信号发生器。 静电电容检测器包括检测电极和屏蔽电极。 检测电极包括用于检测待检测物体的检测器检测电极和用于将电极引入检测器检测电极的电极引导器检测电极。 屏蔽电极连接到屏蔽。 电极引导器检测电极的至少一部分被屏蔽电极屏蔽。
    • 8. 发明授权
    • Eddy current probe with transverse polygonal detecting coil
    • 带多边形检测线圈的涡流探头
    • US06791319B2
    • 2004-09-14
    • US10260521
    • 2002-10-01
    • Tatsuo Hiroshima
    • Tatsuo Hiroshima
    • G01N2782
    • G01N27/9033
    • An exciting coil is constructed by winding a winding in a groove formed on the outer circumference of a circular ring member, and a detecting coil in the shape of a polygon (such as a triangle and a pentagon) when seen from the front is positioned. One side of the detecting coil is placed in a diameter direction of the exciting coil, inside the exciting coil, and the vertex opposite to the one side is placed apart from the exciting coil so that the detecting coil is orthogonal to the exciting coil. A side surface of the exciting coil on the side opposite to the vertex is placed to face the surface of a test material, and used as a flaw detection surface.
    • 励磁线圈通过将绕组缠绕在形成在圆环构件的外周上的槽中而构成,并且当从前面观察时定位为多边形(例如三角形和五边形)形状的检测线圈。 检测线圈的一侧沿励磁线圈的直径方向配置在励磁线圈的内部,并且与一侧相反的顶点与励磁线圈分离,使得检测线圈与励磁线圈正交。 励磁线圈的与顶点相对的一侧的侧表面被放置成面向测试材料的表面,并用作探伤表面。
    • 10. 发明授权
    • Eddy current sensor and eddy current measurement method
    • 涡流传感器和涡流测量方法
    • US08593137B2
    • 2013-11-26
    • US13696021
    • 2011-06-15
    • Naotaka IdeTakanari YamamotoTatsuo Hiroshima
    • Naotaka IdeTakanari YamamotoTatsuo Hiroshima
    • G01R33/12
    • G01N27/80G01N27/90G01N27/9046
    • An eddy current sensor that includes: a probe and a computing unit. The probe has an exciting portion and a detecting portion. The exciting portion includes a first excitation coil that is wound around a non-magnetic bobbin so that a center axis direction is oriented in an x-axis direction and a second excitation coil that is wound around the non-magnetic bobbin to intersect with the first excitation coil so that a center axis direction is oriented in a y-axis direction. The detecting portion includes a detection coil that is arranged at the lower one of two intersecting portions of the first excitation coil and the second excitation coil. An eddy current measurement method for determining the thickness of a hardened layer.
    • 涡流传感器,包括:探头和计算单元。 探针具有激励部分和检测部分。 励磁部包括卷绕在非磁性线轴上以使得中心轴方向在x轴方向上定向的第一激励线圈和缠绕在非磁性线轴上的第二激励线圈与第一激励线圈相交, 励磁线圈,使得中心轴方向在y轴方向上取向。 检测部分包括布置在第一激励线圈和第二激励线圈的两个交叉部分中的下一个处的检测线圈。 用于确定硬化层厚度的涡流测量方法。