SE9703450D0 - Methods and apparatus for process monitoring - Google Patents
Methods and apparatus for process monitoringInfo
- Publication number
- SE9703450D0 SE9703450D0 SE9703450A SE9703450A SE9703450D0 SE 9703450 D0 SE9703450 D0 SE 9703450D0 SE 9703450 A SE9703450 A SE 9703450A SE 9703450 A SE9703450 A SE 9703450A SE 9703450 D0 SE9703450 D0 SE 9703450D0
- Authority
- SE
- Sweden
- Prior art keywords
- vibration characteristics
- recorded
- vibrations
- vibration
- place
- Prior art date
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
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.
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 |
PCT/SE1998/001710 WO1999015890A2 (en) | 1997-09-24 | 1998-09-23 | Method and device 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 |
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 true SE9703450D0 (en) | 1997-09-24 |
SE9703450L 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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
SE516861C3 (en) | 2000-07-14 | 2002-04-17 | Abb Ab | Raffinörstryrning |
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 |
US10107785B2 (en) | 2015-09-24 | 2018-10-23 | Frito-Lay North America, Inc. | Quantitative liquid texture measurement apparatus and method |
US11243190B2 (en) | 2015-09-24 | 2022-02-08 | Frito-Lay North America, Inc. | Quantitative liquid texture measurement method |
US10969316B2 (en) | 2015-09-24 | 2021-04-06 | Frito-Lay North America, Inc. | Quantitative in-situ texture measurement apparatus and method |
US10598648B2 (en) | 2015-09-24 | 2020-03-24 | Frito-Lay North America, Inc. | Quantitative texture measurement apparatus and method |
US10070661B2 (en) | 2015-09-24 | 2018-09-11 | Frito-Lay North America, Inc. | Feedback control of food texture system and method |
US9541537B1 (en) | 2015-09-24 | 2017-01-10 | Frito-Lay North America, Inc. | Quantitative texture measurement apparatus and method |
Family Cites Families (9)
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 |
-
1997
- 1997-09-24 SE SE9703450A patent/SE9703450L/en not_active Application Discontinuation
-
1998
- 1998-09-23 EP EP98945727A patent/EP1018001A2/en not_active Withdrawn
- 1998-09-23 AU AU92904/98A patent/AU9290498A/en not_active Abandoned
- 1998-09-23 WO PCT/SE1998/001710 patent/WO1999015890A2/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP1018001A2 (en) | 2000-07-12 |
WO1999015890A3 (en) | 1999-05-20 |
AU9290498A (en) | 1999-04-12 |
SE9703450L (en) | 1999-03-25 |
WO1999015890A2 (en) | 1999-04-01 |
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Legal Events
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---|---|---|---|
NAV | Patent application has lapsed |
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