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1. 发明公开

US20240393378A1 SINGLE-POINT SAMPLING OPTIMIZATION METHOD AND SYSTEM FOR FREQUENCY RESPONSE MEASUREMENT 审中-公开
公开(公告)号：US20240393378A1
公开(公告)日：2024-11-28
申请号：US18736991
申请日：2024-06-07
申请人： XI'AN JIAOTONG UNIVERSITY
发明人： Zipeng LIU , Jinjun LIU
IPC分类号： G01R23/18
CPC分类号： G01R23/18
摘要： The present disclosure discloses a single-point sampling optimized method and system for frequency response measurement. The frequency response measurement based on sinusoidal excitation is regarded as frequency domain sampling of system under test, the interpolation error between piecewise linear interpolation model of existing sampling value and the theoretical model of the system under test is estimated, and a single newly added sampling point is placed in the sub-frequency band with maximum interpolation error, so as to achieve steepest descent of an overall interpolation error. The present disclosure does not rely on specific hardware, is directly embedded into existing frequency response analyzer, has high usability, high precision and high stability, and has good data inheritance.

2. 发明公开

US20240319239A1 ELECTRICAL SIGNAL ANALYSIS AND APPLIANCE MONITORING 审中-公开
公开(公告)号：US20240319239A1
公开(公告)日：2024-09-26
申请号：US18578156
申请日：2021-07-12
申请人： Eaton Intelligent Power Limited
发明人： Niall CAHILL
IPC分类号： G01R19/25 , G01R22/10 , G01R23/18
CPC分类号： G01R19/2513 , G01R19/2503 , G01R22/10 , G01R23/18
摘要： A method of detecting states of an electrical load from an electrical signal. This involves first providing a mathematical model for the electrical signal. A sliding window can then be used to es-timate parameters of the model. In doing this, a plurality of windows are determined for the electrical signal, a window function is applied for each of the windows, and parameters of the model are determined by interpola-tion. The waveform can then be reconstructed from the determined para-meters and subtracted from the reconstructed waveform from the original signal to obtain a residual. State transitions can then be determined where a difference between the reconstructed waveform and the original signal exceeds a threshold. States are detected and determined as existing for the time period between successive state transitions. Methods of monitoring an electrical system using this approach are also described, as are electrical devices adapted to perform such methods.

3. 发明授权

US12044714B2 Anomaly detection apparatus, method and computer-readable medium 有权
公开(公告)号：US12044714B2
公开(公告)日：2024-07-23
申请号：US17270899
申请日：2018-08-30
申请人： NEC Corporation
发明人： Murtuza Petladwala , Mitsuru Sendoda , Yuko Ohta , Ryota Suzuki
IPC分类号： G01R23/10 , G01R23/14 , G01R23/18
CPC分类号： G01R23/10 , G01R23/145 , G01R23/18
摘要： Provided a method comprising: obtaining waveform data sets of a periodic electric waveform signal, with a length set to one cycle time; calculating a frequency spectrum for each waveform data set; extracting and separating odd and even frequency harmonics to create odd and even frequency harmonic matrices on which a canonical correlation analysis (CCA) being applied to obtain CCA features; performing linear transformation on the CCA features to obtain linear transformed features; generating a model based on the linear transformed features; performing magnitude quantization of frequency spectrums of waveform data sets to identify normal and anomalous waveform signals.

4. 发明公开

US20240168069A1 RECEIVER INTEGRATED REAL-TIME SPECTRUM ANALYSZER 审中-公开
公开(公告)号：US20240168069A1
公开(公告)日：2024-05-23
申请号：US18508383
申请日：2023-11-14
申请人： Sound Devices LLC
发明人： Matthew G. Anderson , James Gordon
IPC分类号： G01R23/18 , H04R1/22
CPC分类号： G01R23/18 , H04R1/222 , H04R2420/07
摘要： Methods and devices are provided for a live real time spectrum analyzer to run on a wireless microphone receiver system whereby color coding, distinctive plotting and labelling may be applied to allow users to differentiate the source of RF emissions contributing to observed peaks in the spectrum.

5. 发明申请

US20180059142A1 SIGNAL ANALYSIS IN TIME AND FREQUENCY 审中-公开
公开(公告)号：US20180059142A1
公开(公告)日：2018-03-01
申请号：US15804544
申请日：2017-11-06
申请人： Rohde & Schwarz GmbH & Co. KG
发明人： Luke Cirillo
IPC分类号： G01R13/02 , G01R23/18
CPC分类号： G01R13/029 , G01R13/0236 , G01R23/18
摘要： An arrangement for signal analysis provides at least one central data-processing unit and a screen unit connected to the at least one central data-processing unit, wherein the central data-processing unit calculates a spectrum and a spectrogram from a digitised signal. The at least one central data-processing unit is embodied in such a manner that it controls the screen unit in such a manner that the spectrogram of the digitised signal, the characteristic of the spectrum of the digitised signal and the characteristic of the digitised signal present in the time domain can be displayed together on the screen unit.

6. 发明申请

US20150088447A1 METHOD AND APPARATUS FOR A PARALLEL FREQUENCY-MASK TRIGGER 有权
标题翻译：并行频率触发器的方法和装置
公开(公告)号：US20150088447A1
公开(公告)日：2015-03-26
申请号：US14237558
申请日：2012-08-03
申请人： Nico Toender , Markus Reiband , Bernhard Nitsch
发明人： Nico Toender , Markus Reiband , Bernhard Nitsch
IPC分类号： G01R23/18 , G01R13/02
CPC分类号： G01R23/18 , G01R13/0254 , G01R13/029
摘要： The frequency-mask trigger unit comprises n trigger machines, where n≧2, in order to evaluate a total of n signal paths. In this context, the n trigger machines are connected to an evaluation unit. For this purpose, at least one trigger range is transferred to the n trigger machines. Moreover, a plurality of result vectors of a signal under analysis transformed into the frequency domain are transferred via the n signal paths to the n trigger machines. Finally, each of the n trigger machines checks whether at least one of the plurality of result vectors of the signal under analysis transformed into the frequency domain infringes the at least one trigger range.
摘要翻译：频率屏蔽触发单元包括n个触发器，其中n≥2，以便评估n个信号路径的总和。在这种情况下，n个触发器连接到评估单元。为此，至少有一个触发范围被传送到n个触发器。此外，转换成频域的分析信号的多个结果向量经由n个信号路径传送到n个触发机器。最后，n个触发机器中的每一个检查被分析的信号的多个结果向量中的至少一个被转换成频域是否侵害了至少一个触发范围。

7. 发明授权

US08630818B2 Method and device for the determination of a statistical measurement value 有权
标题翻译：用于确定统计测量值的方法和装置
公开(公告)号：US08630818B2
公开(公告)日：2014-01-14
申请号：US12516672
申请日：2007-10-25
申请人： Kurt Schmidt
发明人： Kurt Schmidt
IPC分类号： G01R23/18
CPC分类号： G01R23/18 , G01R13/0227 , G06F17/18
摘要： A method and a device for determining a statistical parameter for all frequencies of a frequency distribution of signal levels of a test signal registered respectively in several observation intervals counts the frequency of the signal level of the test signal measured in each case within the respective signal-level range and at the respective value of the time or frequency raster of the frequency distribution from new within every observation interval, and buffers it for display on a display device. After every observation interval, for every signal-level range and every value of the time or frequency raster of the frequency distribution, the respective statistical parameter from the respective, newly-buffered frequency and all respective frequencies measured and buffered at earlier observation intervals is determined and buffered.
摘要翻译：用于确定分别在几个观察间隔中登记的测试信号的信号电平的频率分布的所有频率的统计参数的方法和装置对在每个信号中的每种情况下测量的测试信号的信号电平的频率进行计数，电平范围，并在每个观察间隔内从新的频率分布的时间或频率光栅的相应值缓冲，以便在显示装置上显示。在每个观察间隔之后，对于频率分布的每个信号电平范围和时间或频率光栅的每个值，确定来自在较早观测间隔测量和缓冲的相应的新缓冲频率和所有相应频率的相应统计参数并缓冲。

8. 发明授权

US08452559B2 Density trace measurement 有权
标题翻译：密度跟踪测量
公开(公告)号：US08452559B2
公开(公告)日：2013-05-28
申请号：US12778730
申请日：2010-05-12
申请人： Kathryn A. Engholm , Alfred K. Hillman, Jr. , John F. Turpin , David H. Eby
发明人： Kathryn A. Engholm , Alfred K. Hillman, Jr. , John F. Turpin , David H. Eby
IPC分类号： G01R13/02
CPC分类号： G01R23/18 , G01R13/0254
摘要： A “density trace” according to an embodiment of the present invention is formed by measuring the density of each column of a frequency domain bitmap above a user-specified “amplitude threshold.” The density of each column equals the sum of the densities of all of the pixels in the column that are above the amplitude threshold divided by the sum of the densities of all of the pixels in the column. A density trace provides a convenient way to define and represent the occupancy for a large number of columns, and also allows density data to be quickly transmitted from one instrument or computer to another. In some embodiments, a density trace is incorporated into a trigger detector of a test and measurement instrument and used to generate a trigger signal. The trigger detector compares the density trace to a user-specified “density threshold” and generates the trigger signal when the value of any point of the density trace violates the density threshold.
摘要翻译：根据本发明的实施例的“密度迹线”是通过测量频域位图的每列的密度高于用户指定的“振幅阈值”来形成的。每列的密度等于列中高于振幅阈值的所有像素的密度之和除以列中所有像素的密度之和。密度跟踪提供了一种方便的方法来定义和表示大量列的占用，并且还可以将密度数据从一个仪器或计算机快速传输到另一个。在一些实施例中，将密度迹线并入到测试和测量仪器的触发检测器中，并用于产生触发信号。触发检测器将密度跟踪与用户指定的“密度阈值”进行比较，并且当密度跟踪的任何点的值超过密度阈值时，触发信号产生触发信号。

9. 发明授权

US07889198B2 Display method for signal analyzer 有权
标题翻译：信号分析仪显示方式
公开(公告)号：US07889198B2
公开(公告)日：2011-02-15
申请号：US11129605
申请日：2005-05-13
申请人： Akira Nara
发明人： Akira Nara
IPC分类号： G06T11/20 , G09G5/22 , G01R13/00 , G01R13/02
CPC分类号： G01R23/18 , G01R13/029 , H04B17/23
摘要： A rectangle marker on a display of a signal analyzer simultaneously designates time and frequency intervals of data from a signal under test for analysis. The data of the signal under test is displayed as a graph having time and frequency axes. Sub-graphs show data designated by the rectangle marker as processed in the time domain, frequency domain and modulation domain. The resulting display provides an overview of the signal under test and simultaneously provides displays of measurements and analyzes for a designated portion of the data.
摘要翻译：信号分析仪的显示器上的矩形标记同时指定待测信号的数据的时间和频率间隔，用于分析。被测信号的数据显示为具有时间轴和频率轴的图形。子图显示在时域，频域和调制域中处理的矩形标记指定的数据。所得到的显示屏提供了被测信号的概述，同时提供了指定部分数据的测量和分析的显示。

10. 发明申请

US20080062209A1 Displaying time sequence of 2-dimensional data 失效
标题翻译：显示2维数据的时间序列
公开(公告)号：US20080062209A1
公开(公告)日：2008-03-13
申请号：US11521269
申请日：2006-09-13
申请人： David E. Burgess
发明人： David E. Burgess
IPC分类号： G09G5/10
CPC分类号： G01R13/00 , G01R23/18 , G01S7/04
摘要： A method of displaying a time sequence of 2-dimensional data represents each data set in the time sequence as a normalized figure based upon a reference set of data. The perimeter of the normalized figure is color coded to represent deviations from a data standard that corresponds to the 2-dimensional data. For subsequent data sets in the time sequence each normalized figure is sized to form a series of concentric figures for display representing all the data sets in the time sequence so that patterns of both rotational and magnitude changes are visually apparent.
摘要翻译：显示二维数据的时间序列的方法基于参考数据集，表示时间序列中的每个数据集作为归一化图形。标准化图形的周边被颜色编码以表示与对应于二维数据的数据标准的偏差。对于时间序列中的后续数据集，每个归一化图形的尺寸被设计成形成用于显示的一系列同心图，表示时间序列中的所有数据集，使得旋转和幅度变化的图案在视觉上是显而易见的。

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