公开(公告)号：US08676522B2

公开(公告)日：2014-03-18

申请号：US12961399

申请日：2010-12-06

申请人： Richard David Pearson

发明人： Richard David Pearson

IPC分类号： G06F19/00

CPC分类号： G01R29/085

摘要： A locator for locating a concealed conductor comprises a first field detector operable to detect an alternating magnetic field along a first axis parallel to a primary axis of the locator; a second field detector, displaced from the first field detector and operable to detect an alternating magnetic field along a second axis parallel to the primary axis of the locator; and a processor operable to calculate a difference between a field detected by the first detector and a field detected by the second detector, and to calculate an indication of the lateral displacement of the concealed conductor from the primary axis of the locator using the difference.

摘要翻译： 用于定位隐藏导体的定位器包括第一场检测器，其可操作以沿着平行于定位器的主轴线的第一轴线检测交变磁场; 第二场检测器，从第一场检测器移位并且可操作以沿着平行于定位器的主轴的第二轴检测交变磁场; 以及处理器，其可操作以计算由第一检测器检测的场和由第二检测器检测的场之间的差异，并且使用该差计算隐藏导体与定位器的主轴的横向位移的指示。

公开(公告)号：US20120139525A1

公开(公告)日：2012-06-07

申请号：US12961401

申请日：2010-12-06

申请人： Richard David Pearson

发明人： Richard David Pearson

IPC分类号： G01R33/00

CPC分类号： G01R33/123

摘要： A locator for determining the location and/or orientation of a concealed conductor, comprising a reference field detector operable to detect an alternating magnetic field along a reference axis; a first field detector operable to detect an alternating magnetic field along a first axis; and a processor operable to calculate an in-phase component of a signal detected by the first field detector, the in-phase component being in phase with a signal detected at the reference field detector and to calculate a signal indicative of a position of the concealed conductor relative to the locator using at least the in-phase component.

摘要翻译： 用于确定隐藏导体的位置和/或取向的定位器，包括可用于检测沿着参考轴线的交变磁场的参考场检测器; 第一场检测器，其可操作以检测沿着第一轴的交变磁场; 以及处理器，其可操作以计算由所述第一场检测器检测到的信号的同相分量，所述同相分量与在所述参考场检测器处检测到的信号同相并且计算指示所述隐藏的位置的信号 导体相对于使用至少同相分量的定位器。

公开(公告)号：US08125210B2

公开(公告)日：2012-02-28

申请号：US12396411

申请日：2009-03-02

申请人： John Mark Royle ,  Richard David Pearson

发明人： John Mark Royle ,  Richard David Pearson

IPC分类号： G01R19/00

CPC分类号： G01V3/08

摘要： A detector for calculating a depth of a buried conductor is provided. The detector includes a plurality of antennas for detecting an electromagnetic field radiated by the conductor and one or more signal processors for calculating the depth of the conductor based on the field detected by the antennas. The calculated depth of the conductor is displayed when one or more predetermined criteria are satisfied.

摘要翻译： 提供了一种用于计算掩埋导体的深度的检测器。 检测器包括用于检测由导体辐射的电磁场的多个天线和一个或多个信号处理器，用于基于由天线检测的场来计算导体的深度。 当满足一个或多个预定标准时，显示导体的计算深度。

公开(公告)号：US07940056B2

公开(公告)日：2011-05-10

申请号：US12411143

申请日：2009-03-25

申请人： Stephen Maslen

发明人： Stephen Maslen

IPC分类号： G01R31/11 ,  G01R31/08

CPC分类号： G01R31/11

摘要： The present invention provides a method of time domain reflectometry including transmitting a test signal along a cable under test from one end and sensing and recording a reflected signal from the cable at that end, using the recorded, reflected signal to estimate the distance, Ldist, from the one end to a discontinuity on the cable, separating a test signal component from the remainder, Vr, of the reflected signal; estimating the impedance, Zfault, of the discontinuity from known, predetermined values of the characteristic impedance, Zline, and of the characteristic gain, T, of a reference cable, and from the said separated test signal and reflected signal components, calculating the estimation error as a difference between the model reflection signal, Vrmod, expected of the cable under test based on the characteristic impedance and characteristic gain and the estimated impedance, Zfault and distance, Ldist, and the actual reflection signal Vr, choosing new estimated values of Ldist and Zfault in accordance with a predetermined algorithm such as to approach optimal values, repeating the aforesaid step of calculating the estimation error until a predetermined condition has been satisfied, and outputting the values of Ldist and Zfault that gave the least error.

摘要翻译： 本发明提供了一种时域反射测量方法，包括从一端沿着被测电缆传输测试信号，并使用所记录的反射信号，在该端检测并记录来自电缆的反射信号，估计距离Ldist， 从电缆的一端到不连续性，将测试信号分量与反射信号的余数Vr相分离; 从参考电缆的特征阻抗Zline和特征增益T的已知预定值以及所述分离的测试信号和反射信号分量估计不连续性的阻抗Zfault，计算估计误差 作为基于特征阻抗和特征增益以及估计阻抗Zfault和距离Ldist以及实际反射信号Vr的待测电缆的模型反射信号Vrmod之间的差异，选择Ldist的新估计值和 Zfault根据预定的算法，例如接近最优值，重复上述计算估计误差的步骤，直到满足预定条件，并输出给出最小误差的Ldist和Zfault的值。

公开(公告)号：US20100060285A1

公开(公告)日：2010-03-11

申请号：US12395838

申请日：2009-03-02

申请人： Richard David Pearson ,  Kevin Conway

发明人： Richard David Pearson ,  Kevin Conway

IPC分类号： G01V3/08

CPC分类号： G01V3/081

摘要： A detector for detecting a buried conductor comprises a plurality of antennas B, T. Each antenna B, T has a winding wound around the antenna, the winding being connected to a current source for providing a predefined current in the winding. When the predefined current is applied to the winding an electromagnetic field is generated at the antenna which induces a test current in the antenna. The test current is compared to calibration data stored in the detector to validate the correct operation of the detector.

摘要翻译： 用于检测掩埋导体的检测器包括多个天线B，T。每个天线B，T具有围绕天线缠绕的绕组，所述绕组连接到电流源，以在绕组中提供预定电流。 当预定义的电流施加到绕组时，在天线处产生电磁场，其在天线中引起测试电流。 将测试电流与存储在检测器中的校准数据进行比较，以验证检测器的正确操作。

公开(公告)号：US07304480B1

公开(公告)日：2007-12-04

申请号：US11455788

申请日：2006-06-20

申请人： Richard Pearson

发明人： Richard Pearson

IPC分类号： G01V3/08 ,  H03B21/02

CPC分类号： G01R29/085

摘要： A radio mode selectivity block 41 for a detector 1 for detecting a buried current carrying conductor comprises a plurality of beat frequency oscillators 53 to center the bandwidth of detection of the detector 1 on target very low frequency (VLF) frequency bands. The frequencies of the beat frequency oscillators are chosen to fall within the VLF frequency bands used in a number of countries, so that the detector 1 can be used in radio mode in these countries without the need for local configuration.

摘要翻译： 用于检测埋地载流导体的检测器1的无线电模式选择块41包括多个拍频振荡器53，以使检测器1的检测带宽居于目标极低频（VLF）频带上。 拍频振荡器的频率被选择为落在许多国家使用的VLF频带内，使得检测器1可以在这些国家的无线电模式下使用，而不需要本地配置。

公开(公告)号：US07053789B2

公开(公告)日：2006-05-30

申请号：US10631008

申请日：2003-07-31

申请人： Ricard W. Fling ,  Alberto Iaccarino

发明人： Ricard W. Fling ,  Alberto Iaccarino

IPC分类号： G01V3/00

CPC分类号： G01V11/002

摘要： A data sonde for use in horizontal directional drilling comprising a battery housing to receive a power supply from an internal battery, a connector to receive a power supply from an external power supply cable, and an antenna to emit radiation, is provided, wherein the antenna is arranged to receive operative power from an external power supply when one is connected to the connector, and from a battery housed in the battery housing if no external power supply is connected to the connector. A method of operation of the same is also provided. Additionally, a system for communicating between a data sonde and a remote apparatus connected by cable power supply is provided, the system comprising circuitry to control the energisation of an antenna in the data sonde with a modulation representing data to be transmitted to the remote receiving apparatus, and a detector at the remote apparatus to detect the data for output at the remote apparatus from the DC modulation in base band power consumption of the data sonde corresponding to the DC modulated energising of the data sonde antenna.

摘要翻译： 一种用于水平定向钻井的数据探头，其特征在于包括一个用于从内部电池接收电源的电池壳体，一个从外部电源电缆接收电源的连接器和一个用于发射辐射的天线，其中天线 被布置成当一个连接到连接器时从外部电源接收操作电力，并且如果没有外部电源连接到连接器，则从容纳在电池壳体中的电池接收。 还提供了其操作方法。 另外，提供了一种用于在数据探头和通过电缆电源连接的远程设备之间进行通信的系统，该系统包括电路，用于通过调制来表示要发送到远程接收设备的数据来控制数据探头中的天线的激励 以及远程装置的检测器，用于从对应于数据探头天线的DC调制激励的数据探头的基带功率消耗中的DC调制中检测远程装置输出的数据。

公开(公告)号：US20040004479A1

公开(公告)日：2004-01-08

申请号：US10609504

申请日：2003-07-01

申请人： Radiodetection Limited,

发明人： David William Flatt ,  Stephen John Petherick ,  Robert Ashworth Worsley

IPC分类号： G01V003/08

CPC分类号： C23F13/04 ,  G01N17/02

摘要： Cathodic protection voltages are used to resist the damage to pipes or cables from electrolytic effects. However, localised fields can lead to stray currents and may result in corrosion and it is therefore desirable to detect and analyse those stray currents. Frequently there are several pipes in the area of interest and so it is necessary to distinguish between those pipes. Therefore the cathodic voltage on the pipes is modulated, with different pipes having different modulations. This modulation may be applied using an interrupter. Orthogonal modulations with non-unitary aspect ratios improve the discrimination between the pipes whilst maximising the energy content of the modulation pattern. The analysis is improved when the interrupters are synchronised with each other and so repeating on the same time-base. This synchronisation may be achieved using an external time signal such as GPS. An interrupter which can be used in this regard is also proposed, and may be powered from the cathodic voltage itself.

摘要翻译： 阴极保护电压用于抵抗管道或电缆对电解效应的损害。 然而，局部场地可能导致杂散电流并且可能导致腐蚀，因此希望检测和分析那些杂散电流。 通常在感兴趣的区域有几条管道，因此有必要区分这些管道。 因此，管道上的阴极电压被调制，不同的管道具有不同的调制。 可以使用中断器来应用该调制。 具有非单位宽高比的正交调制改善了管道之间的区别，同时使调制图案的能量含量最大化。 当断路器彼此同步并且在相同的时基上重复时，分析得到改善。 可以使用诸如GPS的外部时间信号来实现该同步。 还提出了可以在这方面使用的中断器，并且可以由阴极电压本身供电。

公开(公告)号：US20030155922A1

公开(公告)日：2003-08-21

申请号：US10076089

申请日：2002-02-15

申请人： Radiodetection limited

发明人： John M. Royle ,  Richard David Pearson

IPC分类号： G01V003/10 ,  G01R025/00 ,  G01V003/08

CPC分类号： G01V3/081

摘要： A system and method to locate electronic marker balls includes receiving a signal representative of a detected marker ball. The signal includes the resolved in-phase and quadrature-phase (I and Q) components, each centered about a first frequency. The I and Q components are filtered in order to shift the first frequency to a second frequency and match the second frequency I and Q components to exponential decay characteristics associated with the marker balls. The second frequency I and Q components phase integrated in order to distinguish the components from noise. The integrating is based upon predetermined gain coefficients and produces integrated I and Q components in accordance with the predetermined gain coefficients. Next, a magnitude of the integrated I and Q components is determined to produce an I and Q magnitude vector and a noise variance associated with the magnitude vector is determined. Finally, the recursive coefficients are adjusted in accordance with the determined noise variance.

摘要翻译： 用于定位电子标记球的系统和方法包括接收表示检测到的标记球的信号。 信号包括解析的同相和正交相（I和Q）分量，每个分量以第一频率为中心。 对I和Q分量进行滤波，以便将第一频率移动到第二频率，并将第二频率I和Q分量匹配成与标记球相关联的指数衰减特性。 第二个频率I和Q分量相位积分，以区分分量与噪声。 积分基于预定的增益系数，并根据预定的增益系数产生积分的I和Q分量。 接下来，确定积分I和Q分量的大小以产生I和Q幅度矢量，并且确定与幅度矢量相关联的噪声方差。 最后，根据确定的噪声方差来调整递归系数。

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。