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1. 发明申请

US20090128156A1 ENHANCED PRECISE LOCATION 有权
标题翻译：加强精确定位
公开(公告)号：US20090128156A1
公开(公告)日：2009-05-21
申请号：US12209999
申请日：2008-09-12
申请人： Kun Li , Jim Waite , Ruwan Welaratna , Johan Overby , Paolo Salvagione
发明人： Kun Li , Jim Waite , Ruwan Welaratna , Johan Overby , Paolo Salvagione
IPC分类号： G01V3/11 , G06F19/00
CPC分类号： G01R29/085 , G01V3/081 , G01V3/104 , G01V3/15 , G01V3/38
摘要： A method for determining the location of underground cables and pipes is disclosed. In some embodiments, the method includes measuring a set of electromagnetic field magnitudes and phases at a plurality of positions while traversing a target line parallelly using 3D electromagnetic coil sensors, the 3D electromagnetic coil sensors being orthogonally oriented to the target line, modeling a set of expected complex electromagnetic field magnitudes of a single underground conductor at each of the positions to form a set of values corresponding to a set of individual models for the target line, determining which of the set of individuals models is a best model, determining confidence information at each of the positions based on a comparison between the measured set of complex electromagnetic magnitudes and phases and the best model, and determining parameters at each of positions related to the target line from the best model.
摘要翻译：公开了一种确定地下电缆和管道位置的方法。在一些实施例中，该方法包括在使用3D电磁线圈传感器平行地横过目标线的同时测量多个位置处的一组电磁场幅度和相位，3D电磁线圈传感器正向定向到目标线，对一组预期在每个位置处的单个地下导体的复杂电磁场强度以形成对应于用于目标线的一组单独模型的值的集合，确定该组个人模型中的哪一个是最佳模型，确定基于所测量的复电磁幅度和相位的组合之间的比较以及最佳模型的每个位置，以及在与最佳模型中的目标线相关的每个位置处确定参数。

2. 发明授权

US08515689B2 Enhanced precise location 有权
标题翻译：增强精确位置
公开(公告)号：US08515689B2
公开(公告)日：2013-08-20
申请号：US12209999
申请日：2008-09-12
申请人： Kun Li , Jim Waite , Ruwan Welaratna , Johan Overby , Paolo Salvagione
发明人： Kun Li , Jim Waite , Ruwan Welaratna , Johan Overby , Paolo Salvagione
IPC分类号： G01B5/30
CPC分类号： G01R29/085 , G01V3/081 , G01V3/104 , G01V3/15 , G01V3/38
摘要： A method for determining the location of underground cables and pipes is disclosed. In some embodiments, the method includes measuring a set of electromagnetic field magnitudes and phases at a plurality of positions while traversing a target line parallelly using 3D electromagnetic coil sensors, the 3D electromagnetic coil sensors being orthogonally oriented to the target line, modeling a set of expected complex electromagnetic field magnitudes of a single underground conductor at each of the positions to form a set of values corresponding to a set of individual models for the target line, determining which of the set of individuals models is a best model, determining confidence information at each of the positions based on a comparison between the measured set of complex electromagnetic magnitudes and phases and the best model, and determining parameters at each of positions related to the target line from the best model.
摘要翻译：公开了一种确定地下电缆和管道位置的方法。在一些实施例中，该方法包括在使用3D电磁线圈传感器平行地横过目标线的同时测量多个位置处的一组电磁场幅度和相位，3D电磁线圈传感器正向定向到目标线，对一组预期在每个位置处的单个地下导体的复杂电磁场强度以形成对应于用于目标线的一组单独模型的值的集合，确定该组个人模型中的哪一个是最佳模型，确定基于所测量的复电磁幅度和相位的组合之间的比较以及最佳模型的每个位置，以及在与最佳模型中的目标线相关的每个位置处确定参数。

3. 发明申请

US20060036376A1 Precise location of buried metallic pipes and cables in the presence of signal distortion 有权
标题翻译：在存在信号失真的情况下，埋藏金属管道和电缆的精确位置
公开(公告)号：US20060036376A1
公开(公告)日：2006-02-16
申请号：US11100696
申请日：2005-04-06
申请人： Thorkell Gudmundsson , Jim Waite , Johan Overby , Stevan Polak , Niklas Lindstrom
发明人： Thorkell Gudmundsson , Jim Waite , Johan Overby , Stevan Polak , Niklas Lindstrom
IPC分类号： G01B5/00
CPC分类号： G01V3/081
摘要： A new approach for locating an underground line described herein remains accurate in the face of bleedover by including both amplitude and phase from at least two magnetic field strength sensors in the measurement set. A numerical optimization step is introduced to deduce the positions and currents of each of several cables, of which one is the targeted cable and the others are termed bleedover cables. Furthermore, some embodiments of the method accounts for practical problems that exist in the field that relate to reliable estimation of cable positions, like the phase transfer function between transmitter and receiver, the estimation of confidence bounds for each estimate, and the rejection of false positive locates due to the presence of noise and interference.
摘要翻译：通过在测量组中包括来自至少两个磁场强度传感器的振幅和相位两者来确定泄漏面的新方法，用于定位本文所述的地下线路的方法仍然是准确的。引入数值优化步骤来推导出几根电缆的位置和电流，其中一条是目标电缆，其他电缆称为放电电缆。此外，该方法的一些实施例解决了现场存在的与电缆位置的可靠估计相关的实际问题，如发射机和接收机之间的相位传递函数，每个估计的置信界限的估计以及假阳性的拒绝由于噪声和干扰的存在而定位。

4. 发明授权

US07356421B2 Precise location of buried metallic pipes and cables in the presence of signal distortion 有权
标题翻译：在存在信号失真的情况下，埋藏金属管道和电缆的精确位置
公开(公告)号：US07356421B2
公开(公告)日：2008-04-08
申请号：US11100696
申请日：2005-04-06
申请人： Thorkell Gudmundsson , Jim Waite , Johan Överby , Stevan Polak , Niklas Lindstrom
发明人： Thorkell Gudmundsson , Jim Waite , Johan Överby , Stevan Polak , Niklas Lindstrom
IPC分类号： G01V3/15
CPC分类号： G01V3/081
摘要： A new approach for locating an underground line described herein remains accurate in the face of bleedover by including both amplitude and phase from at least two magnetic field strength sensors in the measurement set. A numerical optimization step is introduced to deduce the positions and currents of each of several cables, of which one is the targeted cable and the others are termed bleedover cables. Furthermore, some embodiments of the method accounts for practical problems that exist in the field that relate to reliable estimation of cable positions, like the phase transfer function between transmitter and receiver, the estimation of confidence bounds for each estimate, and the rejection of false positive locates due to the presence of noise and interference.
摘要翻译：通过在测量组中包括来自至少两个磁场强度传感器的振幅和相位两者来确定泄漏面的新方法，用于定位本文所述的地下线路的方法仍然是准确的。引入数值优化步骤来推导出几根电缆的位置和电流，其中一条是目标电缆，其他电缆称为放电电缆。此外，该方法的一些实施例解决了现场存在的与电缆位置的可靠估计相关的实际问题，如发射机和接收机之间的相位传递函数，每个估计的置信界限的估计以及假阳性的拒绝由于噪声和干扰的存在而定位。

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