公开(公告)号：US4742298A

公开(公告)日：1988-05-03

申请号：US907840

申请日：1986-09-16

申请人： Seigo Ando ,  Toshiaki Hosoe

发明人： Seigo Ando ,  Toshiaki Hosoe

IPC分类号： G01N27/90 ,  G01N27/82 ,  G01R33/12

CPC分类号： G01N27/904 ,  G01N27/9046

摘要： An apparatus for detecting a surface flaw of each pipe constituting a pipeline, including a pig capable of travelling along pipeline and being provided with the following elements: a cylindrical primary coil coaxial with the pipe, the density of a magnetic flux of an AC magnetic field of the primary coil varying in response to an inner surface flaw of the pipe; a plurality of cylindrical secondary coils arranged at prescribed intervals in the circumferential direction of the pipe between a peripheral surface of the primary coil and a confronting peripheral surface of the pipe, each secondary coil having an axis parallel to the axis of the primary coil, and producing an AC voltage proportional to the density of a component parallel to the axis of each secondary coil, of the magnetic flux of the AC magnetic field of the primary coil; and a signal processing circuit for processing the AC voltage signals from the secondary coils to detect the presence and the depth of a surface flaw of the pipe.

公开(公告)号：US4716366A

公开(公告)日：1987-12-29

申请号：US749941

申请日：1985-06-27

申请人： Toshiaki Hosoe ,  Seigo Ando ,  Yoshihiro Kawase

发明人： Toshiaki Hosoe ,  Seigo Ando ,  Yoshihiro Kawase

IPC分类号： G01B7/00 ,  G01B7/02 ,  G01B7/14 ,  G01F23/00 ,  G01R33/12

CPC分类号： G01B7/023

摘要： Eddy current distance measuring apparatus includes a multiplier connected to one secondary coil of a pair of secondary coils in an eddy current sensor. The secondary coil outputs are inputted to a differential amplifier, and the resulting difference is adjusted to be zero when an object the distance to which is to be measured is not present. Thereafter, the sensor is located within measuring distance of, e.g., a steel plate, and the output of the differential amplifier is combined by an amplifier circuit with an oscillator output supplying a current to the primary coil of the sensor. An eddy current distance signal output is thus obtained.

摘要翻译： 涡流距离测量装置包括连接到涡流传感器中的一对次级线圈的一个次级线圈的乘法器。 次级线圈输出被输入到差分放大器，并且当对象距离要测量的距离不存在时，所得差异被调整为零。 此后，传感器位于例如钢板的测量距离内，并且差分放大器的输出由放大器电路组合，振荡器输出将电流提供给传感器的初级线圈。 由此获得涡流距离信号输出。

公开(公告)号：US4267508A

公开(公告)日：1981-05-12

申请号：US27830

申请日：1979-04-06

申请人： Seigo Ando

发明人： Seigo Ando

IPC分类号： G01B7/00 ,  G01B7/02 ,  H01F27/00 ,  G01R33/00 ,  G01B7/14 ,  G01N27/72 ,  H01F15/16

CPC分类号： G01B7/023 ,  H01F27/008

摘要： An apparatus for non-contact measurement of the distance or gap between a detection coil and a metallic body arranged in an opposing relation with the detection coil, includes a differential amplifier having one input terminal connected to a reference oscillator and the other input terminal connected to a feedback circuit. The detection coil comprises a cylindrical coil and a plurality of magnetic members in rod form are arranged inside its inner bore along the direction of the coil axis and adjacent to the coil inner wall. The plurality of magnetic members comprise a combination of those having positive temperature characteristic and others having negative temperature characteristic so that a change with temperature of the permeability of the magnetic members as a whole is practically reduced to zero. The feedback circuit incorporates the amplified differential output signal of the differential amplifier and the detection coil so that the feedback input signal to the other input terminal of the differential amplifier is controlled by the impedance value of the detection coil which varies with a change in the distance. Consequently, the differential amplifier generates a differential output signal which is indicative of a measured distance.

摘要翻译： 用于非接触测量检测线圈和与检测线圈相对关系的金属体之间的距离或间隙的装置包括：差分放大器，其具有连接到参考振荡器的一个输入端子，和连接到 一个反馈电路。 检测线圈包括圆柱形线圈，并且多个杆状磁性构件沿着线圈轴线的方向布置在其内孔内并与线圈内壁相邻。 多个磁性构件包括具有正温度特性的那些磁性构件和具有负温度特性的组合，使得磁性构件整体的磁导率随温度的变化实际上减小到零。 反馈电路包括差分放大器和检测线圈的放大的差分输出信号，使得到差分放大器的另一输入端的反馈输入信号由检测线圈的阻抗值控制，该阻抗值随着距离的变化而变化 。 因此，差分放大器产生指示测量距离的差分输出信号。

公开(公告)号：US06920166B2

公开(公告)日：2005-07-19

申请号：US10390358

申请日：2003-03-17

申请人： Tetsuya Akasaka ,  Seigo Ando ,  Toshio Nishida ,  Naoki Kobayashi ,  Tadashi Saitoh

发明人： Tetsuya Akasaka ,  Seigo Ando ,  Toshio Nishida ,  Naoki Kobayashi ,  Tadashi Saitoh

IPC分类号： H01L21/20 ,  H01L21/205 ,  H01S5/20 ,  H01S5/323 ,  H01S5/343 ,  H01S5/00

CPC分类号： H01S5/32341 ,  H01L21/0237 ,  H01L21/02378 ,  H01L21/02389 ,  H01L21/0242 ,  H01L21/02458 ,  H01L21/02505 ,  H01L21/0254 ,  H01L21/02579 ,  H01L21/0262 ,  H01L21/02639 ,  H01L33/007 ,  H01L33/16 ,  H01S5/2077

摘要： A masking material 13, which includes stripe-like openings 12 parallel to the [1-100] direction of a nitride semiconductor thin film, is formed on a substrate. Nitride semiconductor thin films 11 doped with Mg are grown on the openings 12 by selective-area growth. The nitride semiconductor thin films 11 are composed of a portion 14 formed as a result of the growth in the direction perpendicular to a (0001) principal plane, and a portion 15 formed as a result of the growth of {11-2x} facets (x=0, 1, 2). The Mg concentration of the portion 15 is made lower than that of the portion 14.

摘要翻译： 在衬底上形成包括平行于氮化物半导体薄膜的[1-100]方向的条状开口12的掩模材料13。 通过选择性区域生长，在开口12上生长掺杂有Mg的氮化物半导体薄膜11。 氮化物半导体薄膜11由垂直于（0001）主平面的方向生长而形成的部分14和由{11-2×}面成长的结果形成的部分15 x = 0,1,2）。 使部分15的Mg浓度低于部分14的Mg浓度。

公开(公告)号：US4186792A

公开(公告)日：1980-02-05

申请号：US862501

申请日：1977-12-20

申请人： Takeo Yamada ,  Seigo Ando ,  Yoshio Miyashita ,  Katsuhiko Murakami ,  Masahisa Tate ,  Kiyoshi Mizui

发明人： Takeo Yamada ,  Seigo Ando ,  Yoshio Miyashita ,  Katsuhiko Murakami ,  Masahisa Tate ,  Kiyoshi Mizui

IPC分类号： G01F23/26 ,  B22D11/18 ,  B22D11/20 ,  B22D11/16

CPC分类号： B22D11/205

摘要： There is disclosed a molten metal level monitoring and controlling apparatus for continuous casting machines which employs an eddy-current type distance measuring device for measuring the level of the molten metal in the mold of a continuous casting machine. The eddy-current type distance measuring device generates a molten metal level signal by detecting in a noncontact manner the distance between its detecting mechanism fixedly mounted in place just above the surface of the molten metal and the molten metal level. According to another embodiment of the invention, the detecting mechanism of the eddy-current type distance measuring device is arranged so as to be vertically movable just above the surface of the molten metal, whereby the detecting mechanism is moved in response to variations in the level of the molten metal to always maintain constant the distance of the detecting mechanism from the molten metal level, and the potentiometer attached to the detecting mechanism generates a molten metal level signal indicative of the distance travelled by the detecting mechanism. The thusly generated molten metal level signal is displayed on a recorder and it is also used for adjusting the pouring rate and the casting withdrawing rate through a monitoring and controlling mechanism so as to maintain the level of the molten metal in the mold within a predetermined range.

摘要翻译： 公开了一种用于连续铸造机的熔融金属液位监视和控制装置，其使用涡流式距离测量装置来测量连铸机的模具中的熔融金属的水平。 涡电流型距离测量装置通过以非接触的方式检测其固定地安装在熔融金属表面上方的位置的检测机构与熔融金属水平之间的距离来产生熔融金属液位信号。 根据本发明的另一个实施例，涡流式距离测量装置的检测机构布置成可以在熔融金属的表面正上方垂直移动，由此检测机构响应于水平的变化而移动 的熔融金属总是保持检测机构距离熔融金属水平的距离恒定，并且附接到检测机构的电位计产生指示由检测机构行进的距离的熔融金属水平信号。 这样产生的熔融金属水平信号显示在记录器上，并且还用于通过监视和控制机构来调节浇注速度和浇铸速度，以便将模具中的熔融金属的水平保持在预定范围内 。

公开(公告)号：US4019131A

公开(公告)日：1977-04-19

申请号：US627137

申请日：1975-10-30

申请人： Takeo Yamada ,  Katsujiro Watanabe ,  Seigo Ando

发明人： Takeo Yamada ,  Katsujiro Watanabe ,  Seigo Ando

IPC分类号： G01B7/04 ,  B21B38/02 ,  G01B7/00 ,  G01B7/14 ,  G01B7/28 ,  G01B7/34 ,  G01R33/12

CPC分类号： G01B7/28 ,  B21B38/02 ,  G01B7/345

摘要： The measuring apparatus comprises an electromagnetic induction type non-contacting distance measuring device including a detection coil disposed near the edge of a running metal strip, a filter for deriving out the high frequency component and the low frequency component of the output of the detection coil, means responsive to the high frequency component for determining the contour of the wavy edge of the strip and means responsive to the low frequency component for adjusting the lateral position of the detection coil with respect to the edge of the metal strip.

摘要翻译： 测量装置包括电磁感应式非接触式距离测量装置，其包括设置在运行中的金属条的边缘附近的检测线圈，用于导出检测线圈的输出的高频分量和低频分量的滤波器， 响应于高频分量的装置，用于确定条的波浪边缘的轮廓，以及响应于低频分量的装置，用于调节检测线圈相对于金属条的边缘的横向位置。

公开(公告)号：US5235275A

公开(公告)日：1993-08-10

申请号：US768986

申请日：1991-10-17

申请人： Seigo Ando ,  Masaki Takenaka ,  Kenichi Iwanaga ,  Takato Furukawa ,  Atsuhisa Takekoshi

发明人： Seigo Ando ,  Masaki Takenaka ,  Kenichi Iwanaga ,  Takato Furukawa ,  Atsuhisa Takekoshi

IPC分类号： G01N27/82 ,  G01N27/90

CPC分类号： G01N27/82 ,  G01N27/9046

摘要： In a magnetic inspection apparatus for a thin steel strip of the invention, a pole-to-pole distance of a magnetizer, which is housed in a hollow roller contacting a traveling thin steel strip to oppose the thin steel strip, is set between twice and eight times a distance between magnetic poles and the thin steel strip. A position of a magnetic sensor in the travel direction of the thin steel strip is shifted from the central position of the magnetic poles to a travel direction side by a small distance. In this invention, a pair of hollow rollers are provided to sandwich upper and lower surfaces of a traveling thin steel strip, and magnetic sensors are respectively housed in the hollow rollers. As a result, a position of a defect in the direction of the thickness of the thin steel strip, and a defect size can be accurately detected. In a magnetic inspection apparatus for a thin steel strip of the invention, a magnetic detection circuit for detecting magnetic flux leakage caused by a defect in the interior or on the surface of a thin steel strip uses an over-saturation type magnetic sensor constituted by applying a detection coil around a ferromagnetic core. As a result, a defect detection sensibility and a defect detection precision are greatly improved.

摘要翻译： PCT No.PCT / JP91 / 00224 Sec。 371日期1991年10月17日 102（e）日期1991年10月17日PCT 1991年2月22日PCT PCT。 WO91 / 13347 PCT出版物 日本1991年9月5日。在本发明的薄钢带磁性检查装置中，磁化器的极点距离容纳在与移动的薄钢带接触的空心辊中，以对抗薄钢 带材设置在磁极和薄钢带之间的距离的两倍到八倍之间。 磁传感器在薄钢带的行进方向上的位置从磁极的中心位置移动到行进方向侧一小段距离。 在本发明中，设置一对中空辊以夹持移动的薄钢带的上表面和下表面，并且磁传感器分别容纳在中空辊中。 结果，可以精确地检测薄钢带的厚度方向上的缺陷位置和缺陷尺寸。 在本发明的薄钢带磁检测装置中，用于检测由薄钢带内部或表面上的缺陷引起的磁通泄漏的磁检测电路使用过饱和型磁传感器，其通过施加 围绕铁磁芯的检测线圈。 结果，大大提高了缺陷检测灵敏度和缺陷检测精度。

公开(公告)号：US4303883A

公开(公告)日：1981-12-01

申请号：US057029

申请日：1979-07-12

申请人： Toshihiro Mori ,  Seigo Ando ,  Hironobu Akuzawa

发明人： Toshihiro Mori ,  Seigo Ando ,  Hironobu Akuzawa

IPC分类号： B23K9/127 ,  B23K11/24 ,  B23K13/00 ,  B23K13/08 ,  B23Q35/13 ,  G01B7/00 ,  G01B7/28 ,  G01D5/22 ,  G01N27/72 ,  G01N27/82 ,  G01N29/24 ,  G01B7/14 ,  G01R33/12

CPC分类号： G01B7/003 ,  B23K9/1276 ,  B23Q35/13 ,  G01B7/28 ,  G01D5/225 ,  G01N27/82 ,  G01N29/2412 ,  G01N2291/105 ,  G01N2291/2675

摘要： An apparatus first magnitizes a base metal with an alternating flux to cross the welded seam of the base metal and the resulting leakage flux from the welded seam is detected by at least one flux search element to generate an AC signal. The fundamental harmonic component corresponding to the magnetizing signal used for the alternating magnetization is eliminated from the AC signal and the resulting signal voltage is sampled at a fixed period corresponding to the period of the magnetizing signal, thus detecting the center position of the welded seam from the result of the sampling. The apparatus comprises a magnetizing coil arranged adjacent to the base metal for the alternating magnetization thereof, at least one flux search element disposed adjacent to the base metal for leakage flux detecting purposes, means for eliminating from the detected AC output signal of the element the fundamental harmonic component corresponding to the magnetizing signal used for the alternating magnetization and a sampling circuit for sampling the output signal voltage of the eliminating means at a predetermined period, whereby the relative positional relation between the flux search element and the center of the welded seam is determined in accordance with the polarity and the amplitude value of the output voltage of the sampling circuit.

摘要翻译： 装置首先用交替的焊剂放大贱金属以穿过贱金属的焊缝，并且由至少一个通量搜索元件检测来自焊缝的所产生的漏磁通以产生AC信号。 从交流信号中消除了与用于交变磁化的磁化信号相对应的基波谐波成分，并以与磁化信号周期相对应的固定时间对所得到的信号电压进行采样，从而检测焊缝的中心位置 取样的结果。 该装置包括一个与该基体金属相邻设置的用于其交变磁化的磁化线圈，用于漏磁检测目的的至少一个设置在该基体金属附近的通量搜索元件，用于从检测到的该元件的基本的AC输出信号中消除基波 对应于用于交变磁化的磁化信号的谐波分量和用于在预定时间段对消除装置的输出信号电压进行采样的采样电路，从而确定焊接探针元件与焊缝中心之间的相对位置关系 根据采样电路的输出电压的极性和振幅值。

公开(公告)号：US4095469A

公开(公告)日：1978-06-20

申请号：US776901

申请日：1977-03-11

申请人： Takeo Yamada ,  Katsujiro Watanabe ,  Seigo Ando ,  Akira Kameyama

发明人： Takeo Yamada ,  Katsujiro Watanabe ,  Seigo Ando ,  Akira Kameyama

IPC分类号： G01K7/36 ,  G01R33/12

CPC分类号： G01K7/36

摘要： An apparatus for measuring the temperature of a metallic body in a non-contact maner includes an electronic circuitry for measuring a change in the impedance of a detecting coil arranged oppposite to the metallic body. The electronic circuitry comprises an operational amplifier, a negative feedback circuit with adjustable feedback factor, a positive feedback circuit, an oscillator, a phase shifter circuit and a synchronous detection circuit. The change in the impedance of the detecting coil is caused by the effect of eddy current produced by the application of alternating field to the metallic body, and this impedance change is dependent on change in the temperature of the metallic body. By adjusting the negative feedback factor .beta..sub.N of the negative feedback circuit and the phase angle .theta. of the phase shifter circuit in the electronic circuitry, the relationship between the distance measured between the detecting coil and the metallic body and the measured output level, the temperature measuring sensitivity relative to the temperature of the metallic body and the temperature measuring sensitivity relative to the measuring distance can be determined as desired.

摘要翻译： 用于测量非接触式接管装置中的金属体的温度的装置包括用于测量与金属体相对布置的检测线圈的阻抗变化的电子电路。 电子电路包括运算放大器，具有可调整反馈因子的负反馈电路，正反馈电路，振荡器，移相器电路和同步检测电路。 检测线圈的阻抗变化是由于通过对金属体施加交变场而产生的涡流的影响引起的，该阻抗变化取决于金属体的温度变化。 通过调整负反馈电路的负反馈因子βN和电子电路中移相器电路的相位角θ，检测线圈与金属体之间测得的距离与测量输出电平之间的关系，温度 可以根据需要确定相对于金属体的温度的测量灵敏度和相对于测量距离的温度测量灵敏度。

公开(公告)号：US4050011A

公开(公告)日：1977-09-20

申请号：US632116

申请日：1975-11-14

申请人： Toshihiro Mori ,  Seigo Ando

发明人： Toshihiro Mori ,  Seigo Ando

IPC分类号： G01N27/90 ,  G01V3/10 ,  G01R33/12

CPC分类号： G01V3/101 ,  G01N27/9046

摘要： When a negative resistance is connected in parallel to a parallel resonance circuit composed of coil and condenser for detecting flaws and other defects of a travelling metal material, the detecting system is capable of improving sensitivity for detecting said flaws and lowering the required degree of amplification of the following amplifier, consequently reducing influence depending upon unbalance of a bridge circuit. At the same time, the simplifying of the power source of said system may be easily realized.

摘要翻译： 当负电阻与由线圈和冷凝器组成的并联谐振电路并联连接以检测行进金属材料的缺陷和其他缺陷时，检测系统能够提高检测所述缺陷的灵敏度并降低所需的放大程度 以下放大器因此减小了桥电路不平衡的影响。 同时，可以容易地实现所述系统的电源的简化。