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公开(公告)号：US06950497B2
公开(公告)日：2005-09-27
申请号：US10221319
申请日：2001-03-29
申请人： Ian R Drury , Charles D O'Connor , Andrew D Chattell , Hilary P Logan , Neil A Thorpe , Geoffrey R Lowndes , Nicholas Lunt
发明人： Ian R Drury , Charles D O'Connor , Andrew D Chattell , Hilary P Logan , Neil A Thorpe , Geoffrey R Lowndes , Nicholas Lunt
摘要： A fault is located along a telecommunications line between the network terminating equipment and the local exchange by measuring a change in the capacitance of the line when compared with the capacitance under normal operating conditions. A geographical information system is used to plot all possible routes for the line between the terminating equipment and the exchange, and the most probable route is selected based on the known positions of nodes along the line, such as pole mounted distribution points and streetside cabinets. The distance of the fault along the line is then plotted along the most probable route to determine an accurate fault location, which is given to a field technician as the location of the nearest premises or a grid reference.
摘要翻译： 在正常工作条件下与电容相比，通过测量线路电容的变化，沿着网络终端设备和本地交换机之间的电信线路定位故障。 地理信息系统用于描绘终端设备和交换机之间的线路的所有可能的路由，并且基于沿着线路的节点的已知位置（例如极安装的分布点和路边机柜）来选择最可能的路线。 沿着线路的故障距离然后沿着最可能的路线绘制，以确定准确的故障位置，这是给现场技术人员作为最近的场所或网格参考的位置。
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公开(公告)号：US07359330B2
公开(公告)日：2008-04-15
申请号：US10220430
申请日：2001-03-05
申请人： Nicholas Lunt , Hilary P Logan , Andrew D Chattell
发明人： Nicholas Lunt , Hilary P Logan , Andrew D Chattell
IPC分类号： G01R31/08
摘要： A fault location system for a telecommunications network including a local exchange or switch, a node such as a primary connection point and a plurality of line terminations includes probability calculation to establish the location of a fault measured from the exchange. Historical non-faulty reference values of capacitance are compiled for each line passing through the node providing a measure of the distance of each line. A lowest valid capacitance value provides an estimate of the reference capacitance between the exchange and the node. A histogram is compiled of historic fault values and a new fault is compared against the histogram to establish the probability of it being a fault at the node or elsewhere. As a result the reference capacitance can be obtained without the need for an engineer at the node, and the likely location of a fault can be pinpointed with greater accuracy.
摘要翻译： 用于包括本地交换机或交换机的电信网络的故障定位系统，诸如主连接点的节点和多个线路终端包括建立从交换机测量的故障的位置的概率计算。 针对通过节点的每一行编译电容的历史无故障参考值，提供每行距离的度量。 最低有效电容值提供交换机和节点之间的参考电容的估计。 对历史故障值进行直方图的编制，并将新故障与直方图进行比较，以确定其在节点或其他地方的故障概率。 因此，可以获得参考电容，而不需要节点处的工程师，并且可以更精确地确定故障的可能位置。
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公开(公告)号：US07418083B2
公开(公告)日：2008-08-26
申请号：US10220431
申请日：2001-03-06
申请人： Andrew D Chattell , Hilary P Logan , Nicholas Lunt
发明人： Andrew D Chattell , Hilary P Logan , Nicholas Lunt
摘要： A fault location system for a telecommunications network including a local exchange or switch, a node such as a primary connection point and a plurality of line terminations to the customer includes probability calculation to establish the location of a fault measuring from the exchange. Historical non-faulty reference values of capacitance are compiled for each line passing through the node providing a measure of the distance of each line. A lowest valid capacitance value provides an estimate of the reference capacitance between the exchange and the node. Using various parameters, probability tables are compiled of historic fault values and a new fault is compared against these tables to establish the probability of it being a fault at the node or elsewhere. As a result the reference capacitance can be obtained without the need for an engineer at the node, and the likely location of a fault can be pinpointed with greater accuracy.
摘要翻译： 用于包括本地交换机或交换机的电信网络的故障定位系统，诸如主连接点的节点和到客户的多个线路终端包括概率计算，以建立从交换机进行的故障测量的位置。 针对通过节点的每一行编译电容的历史无故障参考值，提供每行距离的度量。 最低有效电容值提供交换机和节点之间的参考电容的估计。 使用各种参数，对历史故障值进行概率表的编制，并将新故障与这些表进行比较，以确定其在节点或其他地方是故障的概率。 因此，可以获得参考电容，而不需要节点处的工程师，并且可以更精确地确定故障的可能位置。
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公开(公告)号：US20050141673A1
公开(公告)日：2005-06-30
申请号：US10507115
申请日：2003-03-27
CPC分类号： H04M3/30 , H04M3/10 , H04M3/305 , H04M2201/18
摘要： A method and apparatus for detecting faults on a telephone line, the method comprising: comparing measured characteristics of the line with a model, said model modeling expected characteristics of the telephone line; and in response to the comparison, generating a fault alert signal if the comparison between the measured characteristics and the modeled expected characteristics differ by more than a pre-determined threshold, wherein said characteristics comprise characteristics relating to the transmission of data on the line within a plurality of predetermined frequency bands
摘要翻译： 一种用于检测电话线路上的故障的方法和装置，所述方法包括：将所述线路的测量特性与模型进行比较，所述模型建模所述电话线路的预期特性; 并且响应于所述比较，如果所测量的特性和所建模的预期特性之间的比较差异超过预定阈值，则产生故障警报信号，其中所述特征包括与在线内的数据的传输有关的特性 多个预定频带
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公开(公告)号：US07440552B2
公开(公告)日：2008-10-21
申请号：US10507115
申请日：2003-03-27
CPC分类号： H04M3/30 , H04M3/10 , H04M3/305 , H04M2201/18
摘要： A method and apparatus for detecting faults on a telephone line, the method comprising: comparing measured characteristics of the line with a model, said model modeling expected characteristics of the telephone line; and in response to the comparison, generating a fault alert signal if the comparison between the measured characteristics and the modeled expected characteristics differ by more than a pre-determined threshold, wherein said characteristics comprise characteristics relating to the transmission of data on the line within a plurality of predetermined frequency bands
摘要翻译： 一种用于检测电话线路上的故障的方法和装置，所述方法包括：将所述线路的测量特性与模型进行比较，所述模型建模所述电话线路的预期特性; 并且响应于所述比较，如果所测量的特性和所建模的预期特性之间的比较差异超过预定阈值，则产生故障警报信号，其中所述特征包括与在线内的数据的传输有关的特性 多个预定频带
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