SE9703450L - Methods and apparatus for process monitoring - Google Patents

Methods and apparatus for process monitoring

Info

Publication number
SE9703450L
SE9703450L SE9703450A SE9703450A SE9703450L SE 9703450 L SE9703450 L SE 9703450L SE 9703450 A SE9703450 A SE 9703450A SE 9703450 A SE9703450 A SE 9703450A SE 9703450 L SE9703450 L SE 9703450L
Authority
SE
Sweden
Prior art keywords
vibration characteristics
recorded
vibrations
vibration
place
Prior art date
Application number
SE9703450A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9703450D0 (en
Inventor
K Anders Bjoerk
Original Assignee
Sca Graphic Sundsvall Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sca Graphic Sundsvall Ab filed Critical Sca Graphic Sundsvall Ab
Priority to SE9703450A priority Critical patent/SE9703450L/en
Publication of SE9703450D0 publication Critical patent/SE9703450D0/en
Priority to EP98945727A priority patent/EP1018001A2/en
Priority to AU92904/98A priority patent/AU9290498A/en
Priority to PCT/SE1998/001710 priority patent/WO1999015890A2/en
Publication of SE9703450L publication Critical patent/SE9703450L/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/4409—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison
    • G01N29/4427—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison with stored values, e.g. threshold values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
    • G01N29/046—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks using the echo of particles imparting on a surface; using acoustic emission of particles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/30—Arrangements for calibrating or comparing, e.g. with standard objects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/014—Resonance or resonant frequency
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/024—Mixtures
    • G01N2291/02416—Solids in liquids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02836—Flow rate, liquid level

Landscapes

  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Paper (AREA)

Abstract

The invention relates to a method and a device, in a manufacturing process, for example in the paper pulp, paper, pharmaceutical, food, building material industries, to indicate the characteristics and contents in a suspension in a fluid which flows through a conveying device, e.g. a conveyor line. The mechanical vibrations are recorded directly from the conveying device (12) at least at one place with minimal external influence for a precise time. The recorded vibrations from each place are graded by a data manipulating program (18) according to predetermined characteristics, e.g. frequency, angular and average differences, levels of significance or the like, and a vibration characteristics and/or at least one value related to a vibration characteristics is generated. Stored vibration characteristics and/or values in a memory (19B) relating to earlier vibration recordings with suspensions flowing through the conveyor with analysed contents are compared at each recording with acceptance of the vibration characteristics and/or the value which lies closest to that which is the case for the recorded vibrations. The recorded vibrations can then be used: for controlling the process in a suitable way; for raising alarm when there is a fault; for showing changed tendencies or the like.
SE9703450A 1997-09-24 1997-09-24 Methods and apparatus for process monitoring SE9703450L (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9703450A SE9703450L (en) 1997-09-24 1997-09-24 Methods and apparatus for process monitoring
EP98945727A EP1018001A2 (en) 1997-09-24 1998-09-23 Method and device for process monitoring
AU92904/98A AU9290498A (en) 1997-09-24 1998-09-23 Method and device for process monitoring
PCT/SE1998/001710 WO1999015890A2 (en) 1997-09-24 1998-09-23 Method and device for process monitoring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9703450A SE9703450L (en) 1997-09-24 1997-09-24 Methods and apparatus for process monitoring

Publications (2)

Publication Number Publication Date
SE9703450D0 SE9703450D0 (en) 1997-09-24
SE9703450L true SE9703450L (en) 1999-03-25

Family

ID=20408358

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9703450A SE9703450L (en) 1997-09-24 1997-09-24 Methods and apparatus for process monitoring

Country Status (4)

Country Link
EP (1) EP1018001A2 (en)
AU (1) AU9290498A (en)
SE (1) SE9703450L (en)
WO (1) WO1999015890A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE516861C3 (en) 2000-07-14 2002-04-17 Abb Ab Raffinörstryrning
SE516979C2 (en) * 2000-07-14 2002-03-26 Abb Ab Active acoustic spectroscopy
US9772311B2 (en) 2000-07-14 2017-09-26 Acosense Ab Active acoustic method for predicting properties of process fluids comprising solid particles or gas/liquid volumes based on their size distribution and concentration
US9678015B2 (en) 2014-09-26 2017-06-13 Frito-Lay North America, Inc. Method for elemental analysis of a snack food product in a dynamic production line
US10070661B2 (en) 2015-09-24 2018-09-11 Frito-Lay North America, Inc. Feedback control of food texture system and method
US11243190B2 (en) 2015-09-24 2022-02-08 Frito-Lay North America, Inc. Quantitative liquid texture measurement method
US9541537B1 (en) 2015-09-24 2017-01-10 Frito-Lay North America, Inc. Quantitative texture measurement apparatus and method
US10598648B2 (en) 2015-09-24 2020-03-24 Frito-Lay North America, Inc. Quantitative texture measurement apparatus and method
US10969316B2 (en) 2015-09-24 2021-04-06 Frito-Lay North America, Inc. Quantitative in-situ texture measurement apparatus and method
US10107785B2 (en) 2015-09-24 2018-10-23 Frito-Lay North America, Inc. Quantitative liquid texture measurement apparatus and method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906780A (en) * 1972-10-12 1975-09-23 Mobil Oil Corp Particulate material detection means
US3991603A (en) * 1975-03-10 1976-11-16 Westinghouse Electric Corporation Moisture indicating apparatus
US4060716A (en) * 1975-05-19 1977-11-29 Rockwell International Corporation Method and apparatus for automatic abnormal events monitor in operating plants
US4357603A (en) * 1980-11-24 1982-11-02 The United States Of America As Represented By The Depart Of Energy Method and apparatus for acoustically monitoring the flow of suspended solid particulate matter
GB2156520B (en) * 1984-03-27 1987-08-19 Trade & Industry Secretary Of Monitoring of process steps
AT390516B (en) * 1985-02-14 1990-05-25 Vasipari Kutato Fejleszto METHOD FOR CONTROLLING A HETEROGENIC DIFFUSION-KINETIC CONVERSION PROCESS IN A TURBULENT LIQUID FLOW
GB2183037B (en) * 1985-11-14 1989-12-13 Rolls Royce Sensors for controlling processes or machines
GB2211938A (en) * 1987-11-05 1989-07-12 Atomic Energy Authority Uk Acoustic monitoring of plant operation
US4824016A (en) * 1987-12-10 1989-04-25 Exxon Research And Engineering Company Acoustic monitoring of two phase feed nozzles

Also Published As

Publication number Publication date
SE9703450D0 (en) 1997-09-24
WO1999015890A2 (en) 1999-04-01
WO1999015890A3 (en) 1999-05-20
AU9290498A (en) 1999-04-12
EP1018001A2 (en) 2000-07-12

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