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    • 22. 发明授权
    • Multi-scale enveloping spectrogram signal processing for condition monitoring and the like
    • 用于状态监测的多尺度包络光谱图信号处理等
    • US07602985B2
    • 2009-10-13
    • US11521090
    • 2006-09-14
    • Robert X. GaoRuqiang Yan
    • Robert X. GaoRuqiang Yan
    • G06K9/36B24B49/00
    • G06K9/00523G01H1/06
    • A signal processing technique that decomposes complex, dynamically changing non-stationary signals from machine components such as bearings into different scales by means of a continuous wavelet transform. The envelope signal in each scale is then calculated from the modulus of the wavelet coefficients. Subsequently, Fourier transform is performed repetitively on the envelope of the signal at each scale, resulting in an “envelope spectrum” of the original signal at the various scales. The final output is a three-dimensional scale-frequency map that indicates the intensity and location of the defect-related frequency lines. The technique is generic in nature, and applicable not only to machine condition monitoring, but also to the health monitoring of a wide range of dynamic systems, including human beings.
    • 一种信号处理技术,其通过连续小波变换将复杂的,动态变化的非平稳信号从诸如轴承的机器部件分解成不同的尺度。 然后从小波系数的模数计算每个刻度中的包络信号。 随后,在每个刻度的信号的包络上重复执行傅里叶变换,从而产生各种尺度上原始信号的“包络谱”。 最终的输出是一个三维的比例 - 频率图,它指示与缺陷相关的频率线的强度和位置。 该技术本质上是通用的,不仅适用于机器状态监测,还适用于包括人类在内的广泛动态系统的健康监测。
    • 23. 发明申请
    • MULTI-SCALE ENVELOPING SPECTROGRAM SIGNAL PROCESSING FOR CONDITION MONITORING AND THE LIKE
    • 用于条件监测和类似的多尺度信号光谱信号处理
    • US20090222228A1
    • 2009-09-03
    • US11521090
    • 2006-09-14
    • Robert X. GaoRuqiang Yan
    • Robert X. GaoRuqiang Yan
    • G06F19/00G01R13/00
    • G06K9/00523G01H1/06
    • A signal processing technique that decomposes complex, dynamically changing non-stationary signals from machine components such as bearings into different scales by means of a continuous wavelet transform. The envelope signal in each scale is then calculated from the modulus of the wavelet coefficients. Subsequently, Fourier transform is performed repetitively on the envelope of the signal at each scale, resulting in an “envelope spectrum” of the original signal at the various scales. The final output is a three-dimensional scale-frequency map that indicates the intensity and location of the defect-related frequency lines. The technique is generic in nature, and applicable not only to machine condition monitoring, but also to the health monitoring of a wide range of dynamic systems, including human beings.
    • 一种信号处理技术,其通过连续小波变换将复杂的,动态变化的非平稳信号从诸如轴承的机器部件分解成不同的尺度。 然后从小波系数的模数计算每个刻度中的包络信号。 随后,在每个刻度的信号的包络上重复执行傅里叶变换,从而产生各种尺度上原始信号的“包络谱”。 最终的输出是一个三维的比例 - 频率图,它指示与缺陷相关的频率线的强度和位置。 该技术本质上是通用的,不仅适用于机器状态监测,还适用于包括人类在内的广泛动态系统的健康监测。
    • 24. 发明授权
    • Method for identifying a signal source
    • 识别信号源的方法
    • US06892152B2
    • 2005-05-10
    • US10717643
    • 2003-11-21
    • Pierre RamillonLuc CollorecHenri Cassan
    • Pierre RamillonLuc CollorecHenri Cassan
    • G01H1/06G01H3/08G06F19/00
    • G01H1/06G01H3/08
    • A method for identifying a signal source in a predetermined space, the method including inventorying a set of identified signatures corresponding to a plurality of signal sources and recording a signal simultaneously at different locations of the predetermined space. Parameters related to the conditions under which the recordings are made are then stored, and a spectrum of the signal is determined. The method also includes detecting a line emerging from background noise of the spectrum by using a predetermined emergence threshold. The line is then compared with some or all of the signatures included in the set of identified signatures, and at least one signature corresponding to the line is selected to create at least one signature/line pair. Finally, a source of the signal is identified based on the selecting step.
    • 一种用于在预定空间中识别信号源的方法,所述方法包括对与多个信号源相对应的一组识别的签名进行清点,并在预定空间的不同位置同时记录信号。 然后存储与进行记录的条件相关的参数,并且确定该信号的频谱。 该方法还包括通过使用预定的出现阈值来检测从频谱的背景噪声中出现的线。 然后将线与包括在所识别的签名集合中的一些或所有签名进行比较,并且选择对应于该行的至少一个签名以创建至少一个签名/线对。 最后,基于选择步骤来识别信号源。
    • 27. 发明授权
    • Device for testing the tune of musical instruments
    • 用于测试乐器调音的装置
    • US3896697A
    • 1975-07-29
    • US40719073
    • 1973-10-17
    • IANNONE GARY L
    • IANNONE GARY L
    • G01H1/06G10G7/02
    • G10G7/02G01H1/06
    • A device for testing the tune of musical instruments comprises an adjustable, active, band-pass filter for transmitting in-tune electrical signals and for rejecting out-of-tune electrical signals corresponding to tones of improper pitch produced by a musical instrument to be tuned. The device also includes an indicator operated in response to transmitted signals. The musical instrument, itself, may be provided with means for converting a generated musical tone to an electrical signal, which is then fed into the device, or the device may include such means.
    • 用于测试乐器乐曲的装置包括可调节的,有源的带通滤波器,用于发送调谐电信号并且用于拒绝对应于待调谐乐器产生的不正确音调的音调的失调电信号 。 该装置还包括响应于发射信号而操作的指示器。 乐器本身可以设置有用于将生成的乐音转换为电信号的装置,然后将其馈送到装置中,或者装置可以包括这种装置。