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公开(公告)号：US20120197594A1
公开(公告)日：2012-08-02
申请号：US13382046
申请日：2010-06-23
IPC分类号： G06F17/18
CPC分类号： G01N29/07 , G01N29/4427 , G01N29/4463 , G01N29/46 , G01N2291/044 , G01N2291/2634 , G06F17/148
摘要： The invention relates to a method for filtering measurement signals by way of wavelet filtering, wherein the signals are first transferred to the wavelet domain by way of a wavelet transform, are subjected to threshold analysis, and the threshold values can then be varied in the wavelet domain commensurate with the respective measurement situation. The measurement signals are filtered by a plurality of filters arranged in segmentation levels and a statistical parameter is calculated based on an adjustable number of already calculated wavelet coefficients of a segmentation level and is then multiplied with a value that can be adjusted.
摘要翻译： 本发明涉及一种通过小波滤波滤波测量信号的方法，其中信号首先通过小波变换传送到小波域，进行阈值分析，然后阈值可以在小波变化 与相应的测量情况相称。 测量信号通过以分段级布置的多个滤波器进行滤波，并且基于已经计算的分段级别的小波系数的可调整数量来计算统计参数，然后与可调节的值相乘。
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公开(公告)号：US20080210010A1
公开(公告)日：2008-09-04
申请号：US11997043
申请日：2006-07-28
申请人： Thomas Orth , Stefan Nitsche , Till Schmitte
发明人： Thomas Orth , Stefan Nitsche , Till Schmitte
IPC分类号： G01N29/00
CPC分类号： G01N29/041 , G01N29/11 , G01N29/2412 , G01N29/4427 , G01N29/46 , G01N2291/044 , G01N2291/2634
摘要： A method for nondestructive testing of the pipes for detecting surface flaws is disclosed. With of the method, flaws can be detected and analyzed in near-real-time while the pipe is produced. The data obtained by ultrasound sensors are digitized in a time window following a trigger pulse, and the digitized data are processed in a digital processor, for example a DSP, using wavelet transforms. The evaluated quantity is compared with a reference value, wherein a determined flaw-based signal can be uniquely associated with the flaw located on the pipe surface.
摘要翻译： 公开了一种用于检测表面缺陷的管道的非破坏性测试方法。 通过该方法，可以在生产管道时近距离地检测和分析缺陷。 通过超声波传感器获得的数据在触发脉冲之后的时间窗中被数字化，并且使用小波变换在数字处理器（例如DSP）中处理数字化数据。 将评估的量与参考值进行比较，其中确定的基于缺陷的信号可以与位于管表面上的缺陷唯一地相关联。
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公开(公告)号：US07783432B2
公开(公告)日：2010-08-24
申请号：US11997065
申请日：2006-07-28
申请人： Thomas Orth , Stefan Nitsche , Till Schmitte
发明人： Thomas Orth , Stefan Nitsche , Till Schmitte
CPC分类号： G01N27/9026 , G01N27/82
摘要： A method for nondestructive testing of the pipes for detecting surface flaws using magnetic leakage flux is disclosed. With of the method, flaws can be detected and analyzed in near-real-time while the pipe is produced. The data obtained with inductive coils, Hall sensors or GMR sensors are digitized, the digital data are buffered in a first memory, and a subset of the digital data are copied into a second memory. The copied data are transformed with a wavelet transformation and the resulting wavelet coefficients are filtered and/or modified. In an alternative embodiment, the digital data can be continuously supplied to a routine for wavelet transformation, which is performed using cascaded digital signal processing routines. The evaluated variable is compared with a reference value, wherein a determined flaw-based signal can be unambiguously associated with the position of the flaw.
摘要翻译： 公开了一种用于使用漏磁通检测表面缺陷的管的非破坏性测试方法。 通过该方法，可以在生产管道时近距离地检测和分析缺陷。 使用感应线圈，霍尔传感器或GMR传感器获得的数据被数字化，数字数据被缓冲在第一存储器中，并且数字数据的子集被复制到第二存储器中。 复制的数据用小波变换进行变换，并且所得到的小波系数被过滤和/或修改。 在替代实施例中，可以将数字数据连续提供给使用级联数字信号处理程序执行的用于小波变换的例程。 将评估变量与参考值进行比较，其中确定的基于缺陷的信号可以明确地与缺陷的位置相关联。
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公开(公告)号：US07779693B2
公开(公告)日：2010-08-24
申请号：US11997043
申请日：2006-07-28
申请人： Thomas Orth , Stefan Nitsche , Till Schmitte
发明人： Thomas Orth , Stefan Nitsche , Till Schmitte
IPC分类号： G01N29/00
CPC分类号： G01N29/041 , G01N29/11 , G01N29/2412 , G01N29/4427 , G01N29/46 , G01N2291/044 , G01N2291/2634
摘要： A method for nondestructive testing of the pipes for detecting surface flaws is disclosed. With of the method, flaws can be detected and analyzed in near-real-time while the pipe is produced. The data obtained by ultrasound sensors are digitized in a time window following a trigger pulse, and the digitized data are processed in a digital processor, for example a DSP, using wavelet transforms. The evaluated quantity is compared with a reference value, wherein a determined flaw-based signal can be uniquely associated with the flaw located on the pipe surface.
摘要翻译： 公开了一种用于检测表面缺陷的管道的非破坏性测试方法。 通过该方法，可以在生产管道时近距离地检测和分析缺陷。 通过超声波传感器获得的数据在触发脉冲之后的时间窗中被数字化，并且使用小波变换在数字处理器（例如DSP）中处理数字化数据。 将评估的量与参考值进行比较，其中确定的基于缺陷的信号可以与位于管表面上的缺陷唯一地相关联。
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公开(公告)号：US20080228412A1
公开(公告)日：2008-09-18
申请号：US11997065
申请日：2006-07-28
申请人： Thomas Orth , Stefan Nitsche , Till Schmitte
发明人： Thomas Orth , Stefan Nitsche , Till Schmitte
IPC分类号： G01N27/87
CPC分类号： G01N27/9026 , G01N27/82
摘要： A method for nondestructive testing of the pipes for detecting surface flaws using magnetic leakage flux is disclosed. With of the method, flaws can be detected and analyzed in near-real-time while the pipe is produced. The data obtained with inductive coils, Hall sensors or GMR sensors are digitized, the digital data are buffered in a first memory, and a subset of the digital data are copied into a second memory. The copied data are transformed with a wavelet transformation and the resulting wavelet coefficients are filtered and/or modified. In an alternative embodiment, the digital data can be continuously supplied to a routine for wavelet transformation, which is performed using cascaded digital signal processing routines. The evaluated variable is compared with a reference value, wherein a determined flaw-based signal can be unambiguously associated with the position of the flaw.
摘要翻译： 公开了一种用于使用漏磁通检测表面缺陷的管的非破坏性测试方法。 通过该方法，可以在生产管道时近距离地检测和分析缺陷。 使用感应线圈，霍尔传感器或GMR传感器获得的数据被数字化，数字数据被缓冲在第一存储器中，并且数字数据的子集被复制到第二存储器中。 复制的数据用小波变换进行变换，并且所得到的小波系数被过滤和/或修改。 在替代实施例中，可以将数字数据连续提供给使用级联数字信号处理程序执行的用于小波变换的例程。 将评估变量与参考值进行比较，其中确定的基于缺陷的信号可以明确地与缺陷的位置相关联。
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