公开(公告)号：US20020152810A1

公开(公告)日：2002-10-24

申请号：US09793976

申请日：2001-02-28

发明人： Gilles Couture

IPC分类号： G01M001/12

CPC分类号： G01V7/04 ,  Y10S505/843 ,  Y10S505/846

摘要： Apparatus for measuring gravitational attraction of the Earth comprising a loop formed from a superconductor material. The loop being divided into a first portion and a second portion having a predetermined length and configuration. The loop being positioned under predetermined angle with respect to a horizontal plane. There are also means for initiation of a flow of superconducting carriers in each of first and second portions, and at least one phase shift inducing means formed in the loop. The first portion being positioned with respect to the second portion in such a way that the superconducting carriers conducted through the first portion spend a period of time at a different gravitational potential of the Earth than superconducting carriers conducted through the second portion, thus creating a gravitationally induced phase shift. The apparatus being completely isolated from influence of any external magnetic field. There also shown a method of measuring an absolute value of gravity of the Earth including measuring the current flowing through the superconductor loop of the apparatus at initial position, tilting the apparatus by tilting means under predetermined angle, wherein the current flowing through the superconductor loop is being continuously measured during tilting of the apparatus, measuring the current flowing through the superconductor loop at a final position. The tilting means are adapted to facilitate a precise control of an angular displacement of the apparatus from the initial position to the final position.

摘要翻译： 用于测量地球重力吸引的装置，包括由超导体材料形成的环。 该环被分成具有预定长度和构造的第一部分和第二部分。 环路相对于水平面定位在预定角度。 还存在用于在第一和第二部分中的每一个中引发超导载流子流的装置，以及形成在该环路中的至少一个相移感应装置。 第一部分相对于第二部分定位，使得穿过第一部分的超导载体在与第二部分传导的超导载体相比在地球的不同重力电位下花费一段时间，从而产生重力 诱发相移。 该装置完全与任何外部磁场的影响隔离。 还示出了测量地球重力绝对值的方法，包括测量在初始位置处流过装置的超导体环路的电流，通过倾斜装置倾斜装置预定角度，其中流过超导体环路的电流为 在设备倾斜期间连续测量，测量在最终位置处流过超导体环路的电流。 倾斜装置适于便于精确地控制装置从初始位置到最终位置的角位移。

公开(公告)号：US5845500A

公开(公告)日：1998-12-08

申请号：US862988

申请日：1997-05-27

申请人： Walter N. Podney

发明人： Walter N. Podney

IPC分类号： F17C13/00 ,  G01N27/82 ,  G01R33/035 ,  G01V3/08 ,  G01V3/10 ,  F17C3/10

CPC分类号： G01V3/105 ,  G01N27/82 ,  G01R33/0354 ,  G01V3/08 ,  Y10S505/843 ,  Y10S505/846

摘要： A magnetic telescope utilized to detect flaws in underground articles such as underground piping, implements multiple stages in the form of geometric and electronic configurations to enhance noise suppression. The geometric configuration includes a differential configuration of two pair of source coils which generate the magnetic flux, and gradiometers which pick-up the magnetic flux. A superconducting quantum interference device (SQUID) is utilized to detect the magnetic flux. The electronic configuration includes circuitry to adjust the current in the source coil pairs to minimize the signal seen by the SQUID when no underground article is present. The electronic configuration also includes feedback circuitry to feed back magnetic flux to the SQUID based on the signal detected by the SQUID. Combining the geometric and electronic configurations provides enhanced noise suppression so that the SQUID is capable of detecting smaller flaws in the underground piping for the same amount of source magnetic flux.

摘要翻译： 用于检测地下物品如地下管道中的瑕疵的磁性望远镜以几何和电子配置的形式实现多个阶段，以增强噪音抑制。 几何配置包括产生磁通量的两对源极线圈的差分配置，以及拾取磁通量的梯度计。 利用超导量子干涉装置（SQUID）来检测磁通量。 电子配置包括用于调节源极线圈对中的电流的电路，以便当没有地下制品存在时，SQUID看到的信号最小化。 电子配置还包括基于由SQUID检测的信号将磁通量反馈给SQUID的反馈电路。 结合几何和电子配置提供增强的噪声抑制，使得SQUID能够检测相同量的源磁通量的地下管道中较小的缺陷。

公开(公告)号：US5339025A

公开(公告)日：1994-08-16

申请号：US10685

申请日：1993-01-28

申请人： Thomas E. Jones ,  Wayne C. McGinnis

发明人： Thomas E. Jones ,  Wayne C. McGinnis

IPC分类号： G01N27/04 ,  G01R33/12 ,  G01N27/00

CPC分类号： G01R33/1238 ,  G01N27/041 ,  Y10S505/843

摘要： The present invention provides a method for determining the granular nature of superconductive materials and devices which includes the steps of: conducting a substantially rectangular current pulse through the superconductive material, maintaining the temperature of the superconductive material at a substantially constant temperature which does not exceed the critical temperature of the superconductive material; determining the amplitude of the current pulse; determining the electrical resistance, R, of the superconductive material resulting from conducting current pulse through the superconductive material; increasing the current until the electrical resistance of the superconductive material becomes saturated; determining the electrical resistance difference, .delta., between the electrical resistance, R, of the saturated superconductive material and a total normal state electrical resistance of the superconductive material; generating a first output signal if .vertline..delta..vertline..ltoreq..epsilon., where .epsilon. represents a predetermined limit, where the first output signal corresponds to the superconductive material having a homogenous microscopic morphology; and generating a second output signal if .vertline..delta..vertline.>.epsilon., where the second output signal corresponds to the superconductive material having a granular morphology. The method may also be used to determine the saturated electrical resistances of the superconductive sample.

摘要翻译： 本发明提供了一种用于确定超导材料和器件的颗粒性质的方法，其包括以下步骤：通过超导材料传导基本为矩形的电流脉冲，将超导材料的温度保持在不超过 超导材料的临界温度; 确定电流脉冲的幅度; 确定由导电电流脉冲通过超导材料产生的超导材料的电阻R; 直到超导材料的电阻饱和为止; 确定饱和超导材料的电阻R与超导材料的总正常电阻之间的电阻差δ; 如果|，则产生第一输出信号 delta |

公开(公告)号：US5223798A

公开(公告)日：1993-06-29

申请号：US606396

申请日：1990-10-31

申请人： Wayne C. McGinnis ,  Thomas E. Jones

发明人： Wayne C. McGinnis ,  Thomas E. Jones

IPC分类号： G01R27/00 ,  G01R33/12

CPC分类号： G01R33/1246 ,  G01R27/00 ,  Y10S505/843

摘要： The present invention provides a method for measuring the intragranular andntergranular critical current of a granular superconductive material, comprising the steps of: 1) conducting a substantially rectangular electronic pulse through the material so as to conduct a current through the material such that when the intergranular critical current of the material is exceeded, any grains present in the material remain in a superconducting state when the current level is below the intragranular critical current; 2) measuring the current through the material while conducting the pulse; 3) measuring a voltage difference across the material while conducting the pulse; 4) determining the intergranular critical current through the material by discerning a non-zero voltage difference across the material and contemporaneously measuring the current; and 5) determining the intragranular critical current through the material by varying the current to discern a current level at which the electrical resistance of the material increases to that of the non-superconducting state as the grains of the material transition from the superconducting to a non-superconducting state. This method may also be used to determine the critical current of a homogeneous superconductive material.

摘要翻译： 本发明提供了一种用于测量颗粒状超导材料的晶粒内和晶间临界电流的方法，包括以下步骤：1）通过材料导通基本上矩形的电子脉冲，以便使电流通过材料，使得当晶间 超过材料的临界电流，当电流低于晶内临界电流时，存在于材料中的任何晶粒都保持在超导状态; 2）在进行脉冲时测量通过材料的电流; 3）在进行脉冲时测量材料两端的电压差; 4）通过识别材料上的非零电压差并同时测量电流来确定通过材料的晶间临界电流; 和5）通过改变电流来确定通过材料的晶内临界电流，以鉴别材料的电阻增加到非超导状态的电流水平，当材料的晶粒从超导转变为非超导状态时， 超导状态 该方法也可用于确定均质超导材料的临界电流。

公开(公告)号：US4978922A

公开(公告)日：1990-12-18

申请号：US401592

申请日：1989-08-31

申请人： George T. Mallick, Jr. ,  James R. Logan ,  Phillip W. Eckels

发明人： George T. Mallick, Jr. ,  James R. Logan ,  Phillip W. Eckels

IPC分类号： H01F6/02 ,  G01K1/02 ,  G01K7/00 ,  G01K13/00 ,  G01R1/07 ,  H02H7/00

CPC分类号： G01K13/006 ,  G01K1/024 ,  G01K7/006 ,  G01R1/07 ,  H02H7/001 ,  Y02E40/68 ,  Y10S505/843

摘要： The present invention provides a straightforward sensor and method for quench detection in a superconducting coil, magnet or inductor. The superconducting sensor of the present invention consists of a probe having a twisted loop of superconducting wire in a protective sheath which is co-wound with the superconducting coil, and a readout device. A very small amount of energy is applied to the superconducting loop of wire in the probe by the readout device and its resistance is monitored by readout device. When joule heating occurs in the superconducting coil as a result of a portion becoming normal, the heat is transferred to a corresponding portion of the probe causing a portion of the superconducting wires therein to become normal. This causes the resistance in the superconducting wires to change and this change is detected or measured by the readout device which is magnetically coupled to the wires of the probe.

公开(公告)号：US4931732A

公开(公告)日：1990-06-05

申请号：US223907

申请日：1988-07-25

申请人： Francis C. Moon

发明人： Francis C. Moon

IPC分类号： G01N27/82 ,  G01R33/038 ,  G01R33/12

CPC分类号： G01N27/825 ,  G01R33/038 ,  G01R33/1238 ,  Y10S505/843

摘要： A cantilever beam is employed to place a magnet in proximity to a sample while the sample is maintained at a superconducting temperature. The magnet causes the sample, assuming it is superconductive, to itself generate a magnetic field which interacts with the magnet. Means are provided for measuring the movement of the cantilever beam, such movement being a measure of the interaction of the sample's magnetic field with the magnet. Several types of cantilever beams are disclosed, one of which is adapted to move in a direction orthogonal to the surface of the sample and another of which is adapted to move parallel to the surface of the sample. This enables the obtaining of quantitative measurements of the bulk properties of high temperature superconducting materials.

摘要翻译： 使用悬臂梁将磁体放置在样品附近，同时样品保持在超导温度。 磁体使得样品（假设它是超导的）自身产生与磁体相互作用的磁场。 提供了用于测量悬臂梁的运动的装置，这种运动是样品磁场与磁体的相互作用的量度。 公开了几种类型的悬臂梁，其中之一适于在垂直于样品表面的方向上移动，另一种悬臂梁适于平行于样品表面移动。 这使得能够获得高温超导材料的体积特性的定量测量。

公开(公告)号：US4904929A

公开(公告)日：1990-02-27

申请号：US325823

申请日：1989-03-20

申请人： Joseph Bohandy ,  Boris F. Kim ,  Terry E. Phillips ,  Frank J. Adrian ,  Kishin Moorjani

发明人： Joseph Bohandy ,  Boris F. Kim ,  Terry E. Phillips ,  Frank J. Adrian ,  Kishin Moorjani

IPC分类号： G01N27/04 ,  G01R33/12

CPC分类号： G01N27/041 ,  G01R33/1238 ,  Y10S505/843

摘要： Weak links in electrically continuous superconductors are detected by observing the effect of magnetic field modulation on the dc resistance of superconductors. The phase detected response to the magnetic modulation shows a peak at T.sub.c. The presence of a second peak at temperatures below T.sub.c, and concomitantly the appearance of a tail on the low temperature end of the dc resistance vs temperature curve indicates the presence of weak links in the superconductor.

摘要翻译： 通过观察磁场调制对超导体的直流电阻的影响来检测电连续超导体中的弱连接。 相位检测对磁调制的响应在Tc处显示峰值。 在温度低于Tc的情况下存在第二个峰，同时伴随着直流电阻与温度曲线的低温端的尾部出现，表明在超导体中存在弱连接。

公开(公告)号：US4605897A

公开(公告)日：1986-08-12

申请号：US579846

申请日：1984-02-13

申请人： Raymond C. Gelinas

发明人： Raymond C. Gelinas

IPC分类号： H04B5/00 ,  H04B13/00 ,  H04B13/02 ,  G01B7/14 ,  G01R33/00 ,  G01R35/00

CPC分类号： H04B13/00 ,  H04B13/02 ,  H04B5/00 ,  Y10S505/843

摘要： A method for measurement of distance using the curl-free vector potential radiation field. The system includes current-carrying apparatus for generating a predominantly curl-free vector potential field and apparatus for modulating the current applied to the generating apparatus. The receiving apparatus includes a detecting apparatus with observable properties that vary with the application of an applied curl-free vector potential field, a demodulation apparatus for determining the magnitude of the curl-free vector potential field. The magnitude of the detected curl-free magnetic vector potential field can determine the distance from apparatus generating predetermined periodic changes in the curl-free vector potential field. The vector potential field can be established in conducting and opaque materials which are not capable of transmitting typical electromagnetic radiation.

摘要翻译： 一种使用无卷曲向量势辐射场测量距离的方法。 该系统包括用于产生主要无卷曲矢量势场的载流装置和用于调制施加到发生装置的电流的装置。 接收装置包括具有可应用性质的检测装置，随着应用无卷曲矢量势场的变化，用于确定无卷曲矢量势场幅度的解调装置。 检测到的无卷曲磁矢量势场的大小可以确定在无卷曲向量势场中产生预定周期性变化的装置的距离。 矢量势场可以建立在不能传输典型电磁辐射的导电和不透明材料中。

公开(公告)号：US3657927A

公开(公告)日：1972-04-25

申请号：US3657927D

申请日：1970-02-25

申请人： BELL TELEPHONE LABOR INC

发明人： TYSON JOHN ANTHONY

IPC分类号： G01C19/58 ,  G01P3/44

CPC分类号： G01P3/44 ,  G01C19/58 ,  Y10S505/843

摘要： A superconducting quantum rate gyro device for detecting rotation comprises a plurality of contiguous superconducting loops, superconducting electrons flowing in each of two opposite directions in the loops and means to measure quantum phase differences between electrons flowing in opposite directions. The loops are imbedded in a superconducting shield material to reduce electromagnetic self-inductance and improve detection of lower rotation rates.

摘要翻译： 用于检测旋转的超导量子速率陀螺仪装置包括多个邻接的超导环，在环中两个相反方向中的每一个中流动的超导电子，以及用于测量在相反方向上流动的电子之间的量子相位差的装置。 这些环路嵌入超导屏蔽材料中，以减少电磁自感，并提高较低旋转速率的检测。

公开(公告)号：US3259844A

公开(公告)日：1966-07-05

申请号：US23171362

申请日：1962-10-19

申请人： PHILIPS CORP

发明人： GERHARD CASIMIR HENDRIK BRUGT

IPC分类号： G01R19/04 ,  H03K9/02

CPC分类号： G01R19/04 ,  H03K9/02 ,  Y10S505/843