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公开(公告)号：US20060036404A1
公开(公告)日：2006-02-16
申请号：US11205745
申请日：2005-08-17
申请人： David Wiklund , Kadir Kavaklioglu , John Miller , Ross Lamothe , Evren Eryurek
发明人： David Wiklund , Kadir Kavaklioglu , John Miller , Ross Lamothe , Evren Eryurek
IPC分类号： G06F11/30
CPC分类号： G01F1/363 , G01F1/50 , G01F25/0007 , G05B13/0275 , G05B21/02 , G05B23/0229 , G05D7/0635
摘要： A process variable transmitter with diagnostics based on power spectral density (PSD) analysis of a process variable sensor signal is provided. In one embodiment, the process variable transmitter is a pressure transmitter and the diagnostics are used to diagnose impulse line obstruction or impending obstruction. Other diagnostics are also useful such as diagnosing primary element degradation. The sensor signal is digitized and the digitized signal is transferred into the frequency domain. The power of the frequencies on the sensor signal is examined to provide the enhanced diagnostics. In one aspect diagnostics are generated directly with the sensor PSD data. In another aspect, the PSD analysis is used to tune a filter in order to enhance traditional diagnostic algorithms.
摘要翻译： 提供了一种基于过程变量传感器信号功率谱密度（PSD）分析诊断的过程变量发生器。 在一个实施例中，过程变量发射器是压力变送器，并且诊断用于诊断脉冲线阻塞或即将发生的阻塞。 其他诊断也是有用的，例如诊断主要元素降解。 传感器信号被数字化，数字化信号被传送到频域。 检查传感器信号上的频率的功率以提供增强的诊断。 在一个方面，使用传感器PSD数据直接生成诊断。 另一方面，PSD分析用于调整滤波器以增强传统的诊断算法。
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公开(公告)号：US20050066703A1
公开(公告)日：2005-03-31
申请号：US10675214
申请日：2003-09-30
申请人： David Broden , Timothy Fogarty , David Wiklund , Terry Beachey , Mark Schumacher
发明人： David Broden , Timothy Fogarty , David Wiklund , Terry Beachey , Mark Schumacher
CPC分类号： G01L27/005
摘要： A pressure sensor of a process device, is characterized by applying a plurality of pressures to the process sensor. Outputs of the plurality of pressures are received. A compensation relationship is determined based upon the pressure sensor output. The characterization data is collected in a distribution which is non-uniform across the pressure range.
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