公开(公告)号：US06268731B1

公开(公告)日：2001-07-31

申请号：US09180555

申请日：1998-12-14

申请人： Michael Peter Hopwood ,  Nicholas James Frost

发明人： Michael Peter Hopwood ,  Nicholas James Frost

IPC分类号： G01V306

CPC分类号： G01V3/06

摘要： In order to locate an electrically conductive object, the electromagnetic field generated by a current in the object is detected by a detector having a plurality of spaced apart antennas. In order for the location of the object to be determined, two or more of the antennas together have at least four aerials, with first and second aerials measuring field components in a direction perpendicular to the direction of separation of the antennas, the third aerial measuring field components parallel to the direction of separation and the fourth aerial measuring field components in a direction mutually perpendicular to the field components measured by the first, second and third aerials.

摘要翻译： 为了定位导电物体，由物体中的电流产生的电磁场由具有多个间隔开的天线的检测器检测。 为了确定对象的位置，两个或多个天线一起具有至少四个天线，其中第一和第二天线在垂直于天线分离方向的方向上测量场分量，第三天线测量 平行于分离方向的场分量和第四空中测量场分量在与由第一，第二和第三天线测量的场分量相互垂直的方向上。

公开(公告)号：US06236212B1

公开(公告)日：2001-05-22

申请号：US09102281

申请日：1998-06-22

申请人： Jeffrey C. Wynn

发明人： Jeffrey C. Wynn

IPC分类号： G01V302

CPC分类号： G01V3/06

摘要： A system is provided for detecting minerals and metal-containing materials which are located in sediment deposits on the sea floor and which exhibit an induced polarization response. A streamer cable, which, in use, is towed in the sea behind a ship, includes a series of transmitters and receivers at the free end thereof. The cable is towed such that the free end is in contact with to the sea floor and the transmitters are used to transmit a square wave electrical current into the sediment there. The receivers are used to detect any secondary signals produced by an induced polarization source located on or beneath the sea floor in response to electrical current. Pre-amplifiers connected to the receivers provide noise rejection. On-board electronics process the secondary signals to determine measurement parameters characteristic of the source thereof so as to identify the source. A computer uses this information, together with simultaneously acquired global position data, to determine the location of the source.

摘要翻译： 提供了一种用于检测矿物和含金属材料的系统，其位于海底沉积物中并且表现出诱导的极化响应。 在使用中被拖在船舶后面的海上的拖缆电缆在其自由端处包括一系列发射器和接收器。 电缆被拖曳，使得自由端与海底接触，并且发射器用于将方波电流传输到其中的沉积物中。 接收机用于检测响应于电流而位于海底或下面的感应极化源产生的任何二次信号。 连接到接收器的前置放大器提供噪声抑制。 车载电子设备处理二次信号以确定其来源的特征的测量参数，以便识别源。 计算机使用该信息以及同时获取的全局位置数据来确定源的位置。

公开(公告)号：US06194889B1

公开(公告)日：2001-02-27

申请号：US09092846

申请日：1998-06-08

申请人： David E. Vokey

发明人： David E. Vokey

IPC分类号： G01R1900

CPC分类号： G01V3/06

摘要： A transmission enhancement system is used for strengthening low frequency cable locating signals on the metallic shields of long underground cables. The system includes equalization circuits on the cable armour or shield at regular intervals, for example at splice locations. The equalization circuit includes an inductor that significantly reduces the rate of attenuation of the low frequency tone signal and greatly enhances the strength of the signal at distances where the signal would otherwise be very weak or unusable. The equalization circuit may be a resonant circuit having a capacitor connected in parallel with the inductor. The capacitor compensates for the inductor's attenuation of high frequency tones for local location purposes. The preferred embodiments of the equalization circuit include a surge arrestor coupled in parallel with the inductor and capacitor.

摘要翻译： 传输增强系统用于加强长地下电缆金属屏蔽层上的低频电缆定位信号。 该系统包括电缆装甲或屏蔽件上的均匀电路，例如在接合位置。 均衡电路包括电感器，其显着降低低频音调信号的衰减速率，并且大大增强信号在信号否则将非常弱或不可用的距离处的强度。 均衡电路可以是具有与电感器并联连接的电容器的谐振电路。 电容器补偿电感器对高频音调的衰减，用于本地定位。 均衡电路的优选实施例包括与电感器和电容器并联耦合的浪涌抑制器。

公开(公告)号：US6127827A

公开(公告)日：2000-10-03

申请号：US776013

申请日：1997-01-16

申请人： Andrew Biggerstaff Lewis

发明人： Andrew Biggerstaff Lewis

IPC分类号： G01V3/02 ,  G01V3/06 ,  G01R19/00 ,  G01V3/08 ,  G01V3/10

CPC分类号： G01V3/06

摘要： In order to identify a cable buried underground, a very low frequency voltage signal is applied to the cable and an electric field sensor is brought into proximity with the cable. The sensor thus detects the voltage signal on the cable and so identifies the cable. The sensor is unaffected by one or more additional cables carrying voltage signals, which are proximate the cable of interest, as the electric filters from such additional cables do not pass to the cable of interest. The sensor is mounted on a probe which is mounted into a bore in the soil around the cable of interest. The probes may also carry a magnetometer for detecting magnetic fields generated by low frequency alternating current signals on the cable of interest.

摘要翻译： PCT No.PCT / GB95 / 01723 Sec。 371日期1997年1月16日 102（e）日期1997年1月16日PCT提交1995年7月21日PCT公布。 出版物WO96 / 03664 日期1996年2月8日为了识别埋在地下的电缆，将极低频电压信号施加到电缆上，并将电场传感器与电缆接近。 因此，传感器检测电缆上的电压信号，从而识别电缆。 传感器不受一个或多个附加电缆的影响，电缆信号靠近感兴趣的电缆，因为这些附加电缆的电气滤波器不会传递到感兴趣的电缆。 传感器安装在探头上，探头安装在感兴趣的电缆周围的土壤中的孔中。 探针还可以携带用于检测感兴趣的电缆上的低频交流信号产生的磁场的磁力计。

公开(公告)号：US5861751A

公开(公告)日：1999-01-19

申请号：US851969

申请日：1997-05-06

申请人： Dennis M. Anderson ,  William J. Ehni

发明人： Dennis M. Anderson ,  William J. Ehni

IPC分类号： G01V3/06

CPC分类号： G01V3/06

摘要： The invention includes a method and device for determining the in-situ density of a porous material. A resistivity measuring device applies an electrical current through an electrode array to measure the resistivity of the porous material. The resistivity measuring device may also be used to measure the resistivity of a pore filling fluid. A formation factor and in-situ density constants of the porous material are determined using empirical methods. In-situ moisture content of the porous material is determined. The above data is applied to a general geophysical in-situ density equation to calculate the in-situ density of the porous material.

摘要翻译： 本发明包括用于确定多孔材料的原位密度的方法和装置。 电阻率测量装置通过电极阵列施加电流来测量多孔材料的电阻率。 电阻率测量装置也可用于测量孔隙填充流体的电阻率。 使用经验方法确定多孔材料的形成因子和原位密度常数。 确定多孔材料的原位含水量。 将上述数据应用于一般的地球物理原位密度方程，以计算多孔材料的原位密度。

公开(公告)号：US5855721A

公开(公告)日：1999-01-05

申请号：US814912

申请日：1997-03-12

申请人： Paulo J. M. Monteiro ,  H. F. Morrison

发明人： Paulo J. M. Monteiro ,  H. F. Morrison

IPC分类号： G01N27/20 ,  G01V3/06 ,  B32B31/00

CPC分类号： G01N27/205 ,  G01V3/06

摘要： A method of determining the position and condition of reinforcing steel embedded in concrete is described. The method is non-invasive. Electrodes are use to carry out the method by contacting the outer surface of the concrete. The method measures the impedance of selected regions of the concrete by measuring the voltage generated across said selected regions by a current flowing through the concrete.

摘要翻译： 描述了一种确定混凝土中钢筋的位置和状况的方法。 该方法是非侵入性的。 电极用于通过接触混凝土的外表面来实施该方法。 该方法通过流过混凝土的电流来测量所述选定区域上产生的电压来测量混凝土选定区域的阻抗。

公开(公告)号：US5587659A

公开(公告)日：1996-12-24

申请号：US90137

申请日：1993-10-27

申请人： Kurt I. S.o slashed.rensen

发明人： Kurt I. S.o slashed.rensen

IPC分类号： G01V3/06 ,  G01V3/15 ,  G01V3/165

CPC分类号： G01V3/15 ,  G01V3/06

摘要： The measurement equipment serves to map the subsurface geology in a terrain by means of electrical profiling. A plurality of drag electrodes are used for this purpose, the electrodes with specific mutual spacing, being hooked together with a tow in the form of, e.g., a rope or a wire which is towed by a towing means. An electrical current which is so low as to constitute no danger to operators, is transmitted into the earth through the current electrodes and the voltage is measured across the voltage electrodes. A single-ended electrode amplifier is incorporated into each of the voltage electrodes. The method is useful for rapid and detailed mapping of deposits of natural resources, moist site areas, sand and clay localities in connection with road construction and building land as well as water magazines and refuse dumps.

摘要翻译： PCT No.PCT / DK92 / 00023 Sec。 371日期：1993年10月27日 102（e）日期1993年10月27日PCT提交1992年1月23日PCT公布。 公开号WO92 / 13286 日期1992年8月6日测量设备用于通过电气剖面绘制地形中的地下地质。 为此目的使用多个拖曳电极，具有特定相互间隔的电极通过拖曳装置拖曳的例如绳索或电线的形式的丝束钩在一起。 电流不足以对操作者构成危险的电流通过电流电极传输到地球中，并且跨越电压电极测量电压。 单端电极放大器并入每个电压电极。 该方法有助于快速详细地绘制与道路建设和建筑用地以及水杂志和垃圾堆放有关的自然资源，潮湿地带，沙土和粘土地区的沉积物。

公开(公告)号：US5444364A

公开(公告)日：1995-08-22

申请号：US267422

申请日：1994-06-28

申请人： James R. Satterwhite ,  Sandra J. Horning ,  Gerald A. Wyatt ,  Daniel E. Reisem

发明人： James R. Satterwhite ,  Sandra J. Horning ,  Gerald A. Wyatt ,  Daniel E. Reisem

IPC分类号： G01V3/06 ,  G01R19/00 ,  G01V3/08 ,  G01V3/10

CPC分类号： G01V3/06

摘要： A circuit tracer for determinating the location of a conductor, such as a wire, which is either an open or closed circuit, and which may lie underground. The tracer includes a transmitter which is connected to the conductor, a hand-held probe, and a receiver which is connected to the probe. The probe has three different sensors: an electric field sensor, primarily for locating the terminus of an open-ended conductor or for distinguishing such a wire in a bundled cable of wires; a differential electric field sensor, for determining the direction to and location of an open-ended conductor located above ground; and an inductive sensor for determining the direction to and location of a current-carrying conductor, including an open-ended conductor lying below ground. A switch selectively provides the output from one of the sensors to the receiver unit, which determines the magnitude of any signal based upon the direction the probe is pointing. By swinging the probe back and forth, and observing the received signal, the direction to and location of the conductor may be determined.

摘要翻译： 用于确定导体（例如电线）的位置的电路​​示踪器，其是开路或闭路，并且可能位于地下。 跟踪器包括连接到导体的发射器，手持探针和连接到探针的接收器。 探头具有三个不同的传感器：电场传感器，主要用于定位开口导体的末端或用于区分电线捆扎电缆中的这种电线; 用于确定位于地面上方的开放式导体的方向和位置的差分电场传感器; 以及用于确定载流导体的方向和位置的感应传感器，其包括位于地下的开放式导体。 开关选择性地将传感器之一的输出提供给接收器单元，接收器单元基于探针指向的方向确定任何信号的幅度。 通过前后摆动探头，观察接收到的信号，可以确定导体的方向和位置。

公开(公告)号：US5438266A

公开(公告)日：1995-08-01

申请号：US162258

申请日：1993-12-07

申请人： Tony H. S. Tsang

发明人： Tony H. S. Tsang

IPC分类号： G01V3/06 ,  G01V3/08

CPC分类号： G01V3/06

摘要： An apparatus is disclosed to locate buried conductors, specifically a substation grounding grid. The apparatus provides accurate and precise location of a conductor as it is passed across the ground surface. A power unit is provided that includes a signal generator to produce a periodic test current, asymmetric in time, that has at least one odd harmonic and one even harmonic of a fundamental frequency. The periodic test current is passed through the buried conductors. A portable search unit has a substantially vertical axis coil attuned to pick up a signal including the odd harmonic and the even harmonic of the fundamental frequency from the periodic test current, a power source is provided and a signal interpretation processor and indicator provides an indication of phase reversal of the signal utilizing the odd harmonic and the even harmonic when the vertical axis coil passes over at least one of the buried conductors.

摘要翻译： 公开了一种定位掩埋导体，特别是变电站接地网的装置。 当导体穿过地面时，该装置提供精确和精确的导体位置。 提供了一种功率单元，其包括信号发生器以产生具有基频的至少一个奇次谐波和一个偶次谐波的周期性测试电流，其时间不对称。 周期性测试电流通过埋入导体。 便携式搜索单元具有基本垂直的轴线圈，用于从周期性测试电流拾取包括基本频率的奇次谐波和均匀谐波的信号，提供电源，并且信号解释处理器和指示器提供指示 当垂直轴线圈通过至少一个掩埋导体时，利用奇次谐波的信号的相位反转和偶次谐波。

公开(公告)号：US5418447A

公开(公告)日：1995-05-23

申请号：US827470

申请日：1992-01-29

申请人： Christian Beha ,  Martin Schwarz ,  Hans-Dieter Schuessele

发明人： Christian Beha ,  Martin Schwarz ,  Hans-Dieter Schuessele

IPC分类号： G01V3/06 ,  G01R31/02 ,  G01R31/302 ,  G01V3/165

CPC分类号： G01V3/06

摘要： A process and apparatus for locating and identifying electrical lines in which a high frequency carrier wave, modulated with a four-bit, serial binary code, is transmitted down the line. An electro-magnetic detector is used to locate the particular line bearing this modulated wave, permitting identification of the line without having to make actual electrical contact with the line at the point of identification.

摘要翻译： 一种用于定位和识别电线的工艺和装置，其中以四位串行二进制码调制的高频载波沿线路传输。 使用电磁检测器来定位承载该调制波的特定线路，允许识别线路，而不必在识别点处与线路实际电接触。