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US Patent 7010459 - Process device diagnostics using process variable sensor signal

US Patent Issued on March 7, 2006
Estimated Patent Expiration Date: Icon_subject June 5, 2023Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

A diagnostic device for use in a process control system receives a sensor signal related to a process variable of a process sensed by a process variable sensor. A signal preprocessor provides a sensor power signal output as a function of a frequency distribution of power in the sensor signal. A process condition is determined based upon the sensor power signal.

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Inventors

Assignee

Application

No. 10455815 filed on 06/05/2003

US Classes:

702/182, Performance or efficiency evaluation700/174, Performance monitoring73/861.24, Movable sensor responsive to vortices137/14, Involving pressure control340/870.37, Capacitive transmitter73/861.12, With detecting electrodes73/861.22, Vortex shedders290/52, TURBOGENERATORS162/49, With testing, sampling or analyzing422/62, Automatic analytical monitor and control of industrial process137/10, By speed of fluid162/263, Measuring, testing, inspecting, indicating or illuminating340/501, With particular system function (e.g., temperature compensation, calibration)340/653, Electronic circuit or component318/490, WITH SIGNALS, METERS, RECORDERS OR TESTING DEVICES361/88, With specific voltage responsive fault sensor324/537, Of individual circuit component or element374/120, In spaced noncontact relationship to specimen340/825.2, Synchronizing374/173, By feedback in amplifier circuit or with constant current source in circuit374/170, Digital output73/168, BLOWER, PUMP, AND HYDRAULIC EQUIPMENT219/497, Comprising voltage and/or current measuring and comparing or combining means374/175, Thermal noise generated in conductor365/96, Fusible700/287, Turbine or generator control415/1, METHOD OF OPERATION73/116, MOTOR AND ENGINE TESTING73/660, Rotating machinery or device73/861.17, Selective or periodic sampling324/765, Test of semiconductor device310/319, Electrical output circuit73/659, Spectrum analysis324/713, With voltage or current signal evaluation340/870.38, Resistive transmitter73/118.1, Testing auxiliary unit324/705, With comparison or difference circuit324/718, To detect a flaw or defect359/885, ABSORPTION FILTER73/720, Strain gauge318/701, Hysteresis or reluctance motor systems73/718, Capacitive340/870.3, With particular transmitter (e.g., piezoelectric, dynamo)73/861.15, Plural pairs of detecting electrodes324/763, DUT including test circuit137/486, Responsive to change in rate of fluid flow73/861.04, Of selected fluid mixture component250/495.1, Including an infrared source73/724, Capacitive361/540, With terminal73/1.63, With reference source or attachment therefor374/1, THERMAL CALIBRATION SYSTEM162/65, Oxygen, ozone or air340/608, Stoppage374/210, MISCELLANEOUS340/870.17, Temperature73/861.357, Drive and sensor element located on straight conduit portion340/511, Threshold or window (e.g., of analog electrical level)73/1.35, With pressure measurement or plural flowmeters374/179, By thermoelectric potential generator (e.g., thermocouple)73/861.23, Acoustic374/185, Detail of resistive sensor374/2, By thermal radiation emitting device (e.g., blackbody cavity)701/109, Detection of O2 concentration73/861.66, Sensing at plural transverse locations700/79, Having protection or reliability feature702/102, Tare weight adjusted702/54, Acoustic or vibration sensor374/183, By current modifying sensor73/861.08, By measuring electrical or magnetic properties706/25, Learning method702/130, Temperature measuring system166/53, AUTOMATIC702/183, Diagnostic analysis600/310, Infrared, visible light, or ultraviolet radiation directed on or through body or constituent released therefrom710/63, Universal700/51, Statistical process control (SPC)361/23, Motor protective condition responsive circuits708/400, Transform330/296, Including particular biasing arrangement700/28, Optimization or adaptive control702/184, Maintenance700/83, Having operator control interface (e.g., control/display console)73/861.68, With heating element702/58, For electrical fault detection73/49.2, Receptacle700/2, Plural processors702/34, Wear or deterioration evaluation710/62, Peripheral adapting702/45, Flow metering702/56, Vibration detection73/579, Resonance, frequency, or amplitude study709/223, COMPUTER NETWORK MANAGING340/870.11, Plural transmitters702/188, Remote supervisory monitoring73/861.356, Signal processing or analysis details700/282, Flow control (e.g., valve or pump control)341/120, CONVERTER CALIBRATION OR TESTING700/159, Machining710/269, Handling vector700/17, Operator interface (e.g., display with control)341/118, CONVERTER COMPENSATION73/862.08, Responsive to torque343/701, Having electric space discharge device175/39, WITH BIT WEAR SIGNAL GENERATING700/97, Design or planning700/128Paper machine or subsystem control

Field of Search

702/45, Flow metering702/55, Liquid level or volume determination702/69, Signal quality (e.g., timing jitter, distortion, signal-to-noise ratio)702/104, Sensor or transducer702/105, For mechanical system702/183, Diagnostic analysis702/191, For noise removal or suppression702/195, Subtracting noise component702/182, Performance or efficiency evaluation73/1.69, Using or containing liquid73/861.354, Coriolis or gyroscopic73/861.355, Vibrated conduit73/861.356, Signal processing or analysis details73/861.357, Drive and sensor element located on straight conduit portion73/861.22, Vortex shedders340/606Flow rate

Examiners

Primary: Hoff, Marc S.
Assistant: Charioui, Mohamed

Attorney, Agent or Firm

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  • 5-122768 JP 05/01/1993
  • 06242192 JP 09/01/1994
  • 06-248224 JP 10/01/1994
  • 7-063586 JP 03/01/1995
  • 07234988 JP 09/01/1995
  • 8-054923 JP 02/01/1996
  • 8-102241 JP 04/01/1996
  • 8-136386 JP 05/01/1996
  • 8-166309 JP 06/01/1996
  • 8-247076 JP 09/01/1996
  • 8-313466 JP 11/01/1996
  • 2712625 JP 10/01/1997
  • 2712701 JP 10/01/1997
  • 2753592 JP 03/01/1998
  • 07225530 JP 05/01/1998
  • 10-232170 JP 09/01/1998
  • 11-083575 JP 03/01/1999
  • WO 94/25933 WO 11/01/1994
  • WO 96/11389 WO 04/01/1996
  • WO 96/12993 WO 05/01/1996
  • WO 96/39617 WO 12/01/1996
  • WO 97/21157 WO 06/01/1997
  • WO 97/25603 WO 07/01/1997
  • WO 98/06024 WO 02/01/1998
  • WO 98/13677 WO 04/01/1998
  • WO 98/14855 WO 04/01/1998
  • WO 98/20469 WO 05/01/1998
  • WO 98/39718 WO 09/01/1998
  • WO 99/19782 WO 04/01/1999
  • WO 00/41050 WO 07/01/2000
  • WO 00/55700 WO 09/01/2000
  • WO 00/70531 WO 11/01/2000
  • WO 01/01213 WO 01/01/2001
  • WO 01/77766 WO 10/01/2001
  • WO 02/27418 WO 04/01/2002

International Class

G06F 11/30

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