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    • 1. 发明授权
    • Machine fault detection using vibration signal peak detector
    • 使用振动信号峰值检测器进行机器故障检测
    • US5895857A
    • 1999-04-20
    • US840844
    • 1997-04-17
    • James C. RobinsonBrent VanvoorhisWojtek Miller
    • James C. RobinsonBrent VanvoorhisWojtek Miller
    • G01H1/00G01N29/11G01N29/12G01N29/46G01N29/48G01N29/00
    • G01N29/12G01H1/003G01N29/11G01N29/449G01N29/46G01N29/48G01N2291/2696
    • A signal processing device for processing a machine vibration signal includes a peak value detector for determining the peak vibration amplitude values during predetermined sample time periods. In one embodiment, the vibration signal is digitally processed prior to receipt by a digital peak value detector. In another embodiment, analog processing and peak value detection of the vibration signal is employed. The peak values are then made available for further processing. In many situations, the peak values will be associated with mechanical faults which will be detected at periodic rates corresponding to the mechanical component defect frequencies without additional signal enhancement. Further enhancement can be acquired by synchronous averaging the peak values with the speed of a rotating element. A signal representing the speed of a rotating element (target element) may be obtained directly from a speed sensor that is measuring the speed of the target element, or if the target element is inaccessible, a corrected pseudo-speed signal can be calculated from the speed of an accessible rotating element that is linked to the target element. Transformation of synchronous amplitudes to the frequency domain by means of a fast Fourier transform reveals information that can be used to assess whether or not a fault is present in the rotating machine element.
    • 用于处理机械振动信号的信号处理装置包括用于在预定采样时间段内确定峰值振幅值的峰值检测器。 在一个实施例中,振动信号在数字峰值检测器接收之前被数字处理。 在另一个实施例中,采用振动信号的模拟处理和峰值检测。 峰值随后可用于进一步处理。 在许多情况下,峰值将与机械故障相关联,机械故障将以对应于机械部件缺陷频率的周期速率检测,而不需要额外的信号增强。 可以通过使峰值与旋转元件的速度同步平均来获得进一步的增强。 可以从正在测量目标元件的速度的速度传感器直接获得表示旋转元件(目标元件)的速度的信号,或者如果目标元件不可访问,则可以根据目标元件的速度来计算校正的伪速度信号 连接到目标元件的可触及旋转元件的速度。 通过快速傅里叶变换将同步幅度转换到频域,显示可用于评估旋转机器元件中是否存在故障的信息。
    • 2. 发明授权
    • Enhanced detection of vibration
    • 增强振动检测
    • US06234021B1
    • 2001-05-22
    • US09243324
    • 1999-02-02
    • Kenneth R. PietyJames C. RobinsonWilliam S. JohnsonJames Brent Vanvoorhis
    • Kenneth R. PietyJames C. RobinsonWilliam S. JohnsonJames Brent Vanvoorhis
    • G01H1700
    • G01N29/42G01H1/00G01H3/00G01H3/10G01N29/14G01N29/348G01N2291/015G01N2291/02872G01N2291/2698G01V1/001G10K11/24
    • A device detects an emission source of a vibration signal against a background of noise, where the vibration signal is produced by a mechanical system and has one or more frequency components. A sensor senses the vibration signal and produces a sensor signal corresponding to the vibration signal. The sensor has a mechanical frequency selection structure for mechanically resonating at desired frequencies and for mechanically attenuating a frequency component of the vibration signal having a frequency outside the desired frequencies. The mechanical frequency selection structure thus produces a mechanically-tuned sensor signal. Electrical frequency selection filters electrically attenuate a frequency component of the mechanically-tuned sensor signal having a frequency outside the desired frequencies. The electrical frequency selection filters thus produce an electrically-tuned sensor signal. The device has at least one amplifier with gain for producing an amplified signal corresponding to the electrically-tuned sensor signal. An amplitude characteristic determination circuit determines an amplitude characteristic corresponding to the vibration signal's amplitude. The amplitude characteristic determination circuit also generates an amplitude indication based on the amplitude characteristic. The amplitude indication and adjusts the gain of the amplifier based at least in part on the amplitude indication.
    • 一种装置根据噪声背景检测振动信号的发射源,其中振动信号由机械系统产生并具有一个或多个频率分量。 传感器感测振动信号并产生对应于振动信号的传感器信号。 传感器具有机械频率选择结构,用于以期望的频率机械谐振,并机械地衰减具有期望频率之外的频率的振动信号的频率分量。 因此,机械频率选择结构产生机械调谐的传感器信号。 电频率选择滤波器对具有在期望频率之外的频率的机械调谐的传感器信号的频率分量进行电衰减。 因此,电频率选择滤波器产生电调谐的传感器信号。 该装置具有至少一个具有增益的放大器,用于产生对应于电调谐传感器信号的放大信号。 振幅特性确定电路确定对应于振动信号振幅的振幅特性。 幅度特性确定电路还基于振幅特性产生振幅指示。 振幅指示并且至少部分地基于振幅指示来调节放大器的增益。
    • 8. 发明授权
    • Enhancement of periodic data collection by addition of audio data
    • 通过添加音频数据来增强定期数据采集
    • US07538663B2
    • 2009-05-26
    • US11627606
    • 2007-01-26
    • Richard W. PietyJames C. RobinsonThomas E. Nelson
    • Richard W. PietyJames C. RobinsonThomas E. Nelson
    • G08B23/00
    • G01M13/028G01H9/008
    • A portable route-based machine data collector stores audio files to supplement associated machine performance data, such as vibration data. The audio files, which may include voice comments, audio segments of raw vibration data, or frequency-shifted components of the vibration data, are stored in the data collector as standard-format digital audio files and are later downloaded to a computer for further analysis. Test personnel can then replay the audio files for data analysis personnel to get second opinions regarding whether machine faults may be indicated by the recorded sounds. Also, audio files associated with normal and abnormal machine operation may be saved on the portable data collector and used as baselines or for training purposes. Verbal operating instructions may also be stored as audio files on the portable data collector for replay by test operators in the field. In a case where the portable data collector is an ultrasonic monitoring unit, frequency-shifted (audible) ultrasonic data may be stored in an audio file in association with non-shifted ultrasonic data.
    • 基于便携式路由的机器数据收集器存储音频文件以补充关联的机器性能数据,例如振动数据。 可以包括语音注释,原始振动数据的音频片段或振动数据的频移分量的音频文件作为标准格式的数字音频文件存储在数据收集器中,并且稍后下载到计算机进行进一步的分析 。 然后,测试人员可以重播数据分析人员的音频文件,以获得关于机器故障是否可以由录制声音指示的第二意见。 此外,与正常和异常机器操作相关联的音频文件可以保存在便携式数据收集器上,并用作基线或用于训练目的。 言语操作指令也可以作为音频文件存储在便携式数据收集器上,以便在现场的测试操作者重播。 在便携式数据收集器是超声波监视单元的情况下,频移(可听)超声波数据可以与非移动超声波数据相关联地存储在音频文件中。
    • 9. 发明授权
    • Low power vibration sensor and wireless transmitter system
    • 低功率振动传感器和无线发射机系统
    • US07424403B2
    • 2008-09-09
    • US11627476
    • 2007-01-26
    • James C. RobinsonJoseph C. BaldwinJames W. WalkerWilliam E. Childress
    • James C. RobinsonJoseph C. BaldwinJames W. WalkerWilliam E. Childress
    • G06F19/00G06F17/40
    • G01H1/00
    • A low power vibration sensor and wireless transmitter system has one or more sensors that sense parameters of a machine including vibration and produces dynamic signals representing the sensed parameters. The system converts the signals to a digital format, digitally filters the signals, and processes the signals. A processor determines a plurality of levels, which represent the characteristics of the signal such as the peak value of a predetermined set of data points of the digital signal. Together, the levels comprise a PeakVue waveform. The processor determines the peak level value for the PeakVue waveform. Also, a true root-mean-square is calculated as the signal is received at the processor. The peak level and the RMS value are communicated wirelessly by a communication module to a control protocol network such as a daisy chain HART or Fieldbus protocol network. The system power supply and the communication module power supply are separate and allow for low power operation.
    • 低功率振动传感器和无线发射机系统具有一个或多个传感器,其感测包括振动的机器的参数,并产生表示所感测的参数的动态信号。 系统将信号转换为数字格式,对信号进行数字滤波,并对信号进行处理。 处理器确定多个电平,其表示信号的特性,例如数字信号的预定数据点组的峰值。 一起,级别包括PeakVue波形。 处理器确定PeakVue波形的峰值电平值。 此外,当处理器接收到信号时,计算出真正的均方根。 峰值电平和RMS值通过通信模块无线地传送到诸如菊花链HART或现场总线协议网络的控制协议网络。 系统电源和通信模块电源分开,允许低功耗运行。
    • 10. 发明申请
    • LOW POWER VIBRATION SENSOR AND WIRELESS TRANSMITTER SYSTEM
    • 低功率振动传感器和无线发射机系统
    • US20080082296A1
    • 2008-04-03
    • US11627476
    • 2007-01-26
    • James C. RobinsonJoseph C. BaldwinJames W. WalkerWilliam E. Childress
    • James C. RobinsonJoseph C. BaldwinJames W. WalkerWilliam E. Childress
    • G06F19/00G06F17/40
    • G01H1/00
    • A low power vibration sensor and wireless transmitter system has one or more sensors that sense parameters of a machine including vibration and produces dynamic signals representing the sensed parameters. The system converts the signals to a digital format, digitally filters the signals, and processes the signals. A processor determines a plurality of levels, which represent the characteristics of the signal such as the peak value of a predetermined set of data points of the digital signal. Together, the levels comprise a PeakVue waveform. The processor determines the peak level value for the PeakVue waveform. Also, a true root-mean-square is calculated as the signal is received at the processor. The peak level and the RMS value are communicated wirelessly by a communication module to a control protocol network such as a daisy chain HART or Fieldbus protocol network. The system power supply and the communication module power supply are separate and allow for low power operation.
    • 低功率振动传感器和无线发射机系统具有一个或多个传感器,其感测包括振动的机器的参数,并产生表示所感测的参数的动态信号。 系统将信号转换为数字格式,对信号进行数字滤波,并对信号进行处理。 处理器确定多个电平,其表示信号的特性,例如数字信号的预定数据点组的峰值。 一起,级别包括PeakVue波形。 处理器确定PeakVue波形的峰值电平值。 此外,当处理器接收到信号时,计算出真正的均方根。 峰值电平和RMS值通过通信模块无线地传送到诸如菊花链HART或现场总线协议网络的控制协议网络。 系统电源和通信模块电源分开,允许低功耗运行。