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210 条记录 (耗时 0.012 秒)

    Method and apparatus for detecting embrittlement of a measuring object
    111.
    发明公开
    Method and apparatus for detecting embrittlement of a measuring object 失效
    Apparat und Verfahren zur Detektion derSchäden一个metallischem Stoff。

    公开(公告)号：EP0308888A2

    公开(公告)日：1989-03-29

    申请号：EP88115467.8

    申请日：1988-09-21

    申请人： HITACHI, LTD.

    发明人： Otaka, Masahiro ,  Enomoto, Kunio Midorigaoka Danchi D-6 ,  Hasegawa, Kunio ,  Hayashi, Makoto ,  Shimizu, Tasuku ,  Takaku, Kazuo

    IPC分类号： G01N27/82

    CPC分类号： G01N27/72 ,  G01N17/00 ,  Y10S505/846

    摘要： On the basis of a finding that a magnetic hysteresis of a metal material, among magnetization characteristics changing with secular degradation of the metal material, shows a clear correspondence with the degree of degradation of the metal material, a change in such a magnetization characteristic is measured to estimate the degree of secular degradation of the metal material. In a typical embodiment, a superconducting quantum interference device (33; 340) is used to detect the magnetization characteristic of a measuring object (1; 11). According to the present invention, the degree of embrittlement of a metal material used in an environment of high tempera­tures can be quickly detected in a non-destructive fashion so that the danger of brittle fracture of the metal material can be reliably prevented.

    摘要翻译： 基于金属材料的磁滞特性在金属材料的长期劣化变化的磁化特性中显示与金属材料的劣化程度明显对应的结果的基础上，测量这种磁化特性的变化 以估计金属材料的长期衰退的程度。 在典型的实施例中，使用超导量子干涉装置（33; 340）来检测测量对象（1; 11）的磁化特性。 根据本发明，可以以非破坏性的方式快速地检测在高温环境中使用的金属材料的脆化程度，从而可以可靠地防止金属材料脆性断裂的危险。

    Superconducting analog-to-digital converter and digital magnetometer and related method for its use
    112.
    发明公开
    Superconducting analog-to-digital converter and digital magnetometer and related method for its use 失效
    超导AD转换器和数字磁力仪及其使用相关方法。

    公开(公告)号：EP0222470A2

    公开(公告)日：1987-05-20

    申请号：EP86306033.1

    申请日：1986-08-05

    申请人： TRW INC.

    发明人： Silver, Arnold Herbert

    IPC分类号： H03M1/34 ,  G01R33/035

    CPC分类号： G01R33/0356 ,  H03M1/48 ,  Y10S505/846

    摘要： A device for use as an analog-to-digital converter or a digital magnetometer using a double-junction superconducting quantum interference device (SQUID) and having an extremely fine sensitivity, but a large dynamic range and the ability to handle rapid signal slew rates. The SQUID receives a composite signal, including the analog signal, a correction signal, and a high-frequency dither signal, the latter being selected to produce two output pulses from the SQUID when operated at a quiescent operating point. Departure from the operating point is detected by monitoring the SQUID output pulses and controlling a feedback register to record the degree of movement from the operating point. The feedback register provides the less significant bits of digital output from the converter. The value stored in the feedback register is also converted to analog form and fed back to the SQUID as the correction signal, thereby locking the device onto the desired operating point. Rapid or slow movement equivalent to more than one flux quantum is also detected in the device, and is recorded in an integer register, which provides the more significant bits of the digital output.

    MAGNETIC SENSOR
    115.
    发明公开
    MAGNETIC SENSOR 审中-公开
    MAGNETFELDSENSOR

    公开(公告)号：EP1193504A4

    公开(公告)日：2004-08-25

    申请号：EP01908346

    申请日：2001-03-06

    申请人： SUMITOMO ELECTRIC INDUSTRIES

    发明人： ITOZAKI H ,  NAGAISHI T

    IPC分类号： G01R33/035 ,  H01L39/04

    CPC分类号： G01R33/0358 ,  Y10S505/846

    摘要： A magnetic sensor (1) measures a magnetic field distribution of an object (S) using a SQUID (2). The magnetic sensor (1) comprises a vacuum container (10) for accommodating the SQUID (2), and a needlelike member (30) formed of a high permeability material for leading a magnetic flux from the object (S) to the SQUID (2). The member (30) has one end (30a) separated from the SQUID (2) within the container (10), and the other end (30b) located outside the container (10).

    摘要翻译： 磁传感器（1）使用SQUID（2）测量物体（S）的磁场分布。 磁传感器1包括用于容纳SQUID 2的真空容器10以及由高导磁率材料形成的用于将来自物体S的磁通引导到SQUID 2的针状构件30。 ）。 部件（30）具有在容器（10）内与SQUID（2）分离的一端（30a），另一端（30b）位于容器（10）的外部。

    MAGNETIC SENSOR
    116.
    发明公开
    MAGNETIC SENSOR 审中-公开
    MAGNETFELDSENSOR

    公开(公告)号：EP1193504A1

    公开(公告)日：2002-04-03

    申请号：EP01908346.8

    申请日：2001-03-06

    申请人： Sumitomo Electric Industries, Ltd.

    发明人： ITOZAKI, H., Itami Works Sumitomo Elect. Ind. Ltd ,  NAGAISHI, T., Itami Works Sumitomo Elect. Ind Ltd

    IPC分类号： G01R33/035

    CPC分类号： G01R33/0358 ,  Y10S505/846

    摘要： According to this invention, a magnetic sensor (1) for measuring a magnetic field distribution of a measurement target S by using a SQUID (2) is characterized by including a storing portion (10) with an interior held in a vacuum state to store the SQUID (2), and a substantially needle-like flux introducing member (30) made of a high-permeability material to guide a magnetic flux from the measurement target (S) to the SQUID (2), wherein the flux introducing member (30) has one end (30a) located in the storing portion (10) to be away from the SQUID (2) and the other end (30b) located outside the storing portion (10).

    摘要翻译： 根据本发明，用于通过使用SQUID（2）测量测量对象S的磁场分布的磁传感器（1）的特征在于包括具有保持在真空状态的内部的存储部分（10） SQUID（2）和由高磁导率材料制成的大致针状的磁通引导构件（30），用于将来自测量对象（S）的磁通引导到SQUID（2），其中，磁通引导构件 ）具有位于存储部分（10）中的远离SQUID（2）的一端（30a）和位于存储部分（10）外部的另一端（30b）。

    Device and method for adjusting the working point of a squid
    118.
    发明公开
    Device and method for adjusting the working point of a squid 审中-公开
    Vorrichtung und Verfahren zur Einstellung des Arbeitspunktes eines SQUID

    公开(公告)号：EP1043597A3

    公开(公告)日：2001-07-11

    申请号：EP00400960.1

    申请日：2000-04-07

    申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

    发明人： Hirano, Tetsuya ,  Nagaishi, Tatsuoki ,  Itozaki, Hideo

    IPC分类号： G01R33/035

    CPC分类号： G01R33/0356 ,  Y10S505/846

    摘要： A SQUID bias current adjustment device (AC SUPPLY) supplies a sinusoidal current at 40 kHz, for example, to a coil (12) to generate magnetic field at a SQUID (10). The amplitude of the field corresponds to a half period of a field-voltage characteristic. Voltage generated from the SQUID at this time is filtered by using a filter (14) to pick out components of 40 kHz and 80 kHz. The picked out signal components are rectified and converted to direct current, and the bias current is adjusted such that the maximum value is obtained. In this way, a SQUID bias current adjustment device can be provided capable of automatically adjusting bias current properly in a short period of time.

    摘要翻译： SQUID偏置电流调节装置（AC SUPPLY）将例如40kHz的正弦电流提供给线圈（12），以在SQUID（10）处产生磁场。 场的幅度对应于场电压特性的半周期。 此时由SQUID产生的电压通过使用滤波器（14）进行滤波，以挑选40kHz和80kHz的分量。 拾取的信号分量被整流并转换为直流电流，并且调整偏置电流以使得获得最大值。 以这种方式，可以提供能够在短时间内适当地自动调整偏置电流的SQUID偏置电流调节装置。

    SQUID CONTROL APPARATUS
    119.
    发明授权
    SQUID CONTROL APPARATUS 失效
    一种用于控制SQUIDS

    公开(公告)号：EP0682776B1

    公开(公告)日：1999-03-31

    申请号：EP94907958.6

    申请日：1994-02-02

    申请人： CONDUCTUS, INC.

    发明人： COLCLOUGH, Mark, S.

    IPC分类号： G01R33/035

    CPC分类号： G01R33/0356 ,  Y10S505/846

    摘要： SQUID control apparatus for controlling multiple SQUID probes (102) includes a plurality of head units (104) each corresponding to a respective SQUID probe, each of the head units including a non-cryogenic modulated flux-locked loop feedback circuit operating at a respective modulation frequency. The apparatus also includes a base unit (112) coupled to all of the head units, the base unit providing control signals to control the multiple head units. Means are also provided, such as through the use of a daisy chain topology, for synchronizing the modulation frequency of all of the modulated flux-locked loop feedback circuits. The head units may also contain a phase shifter coupled to phase shift the modulation frequency oscillator signal for provision to the local oscillator input of a demodulator, and the phase shifter may include a shifting filter for filtering the oscillator signal to reduce all frequency components except a fundamental frequency component by a desired amount, and shaping means for shaping the filtered and shifted signal into a square wave.