WO2002097192A1 - Dispositif de surveillance - Google Patents
Dispositif de surveillance Download PDFInfo
- Publication number
- WO2002097192A1 WO2002097192A1 PCT/JP2002/005207 JP0205207W WO02097192A1 WO 2002097192 A1 WO2002097192 A1 WO 2002097192A1 JP 0205207 W JP0205207 W JP 0205207W WO 02097192 A1 WO02097192 A1 WO 02097192A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- paper
- light
- camera
- monitoring device
- image
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/8901—Optical details; Scanning details
- G01N21/8903—Optical details; Scanning details using a multiple detector array
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/04—Paper-break control devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/34—Paper
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S162/00—Paper making and fiber liberation
- Y10S162/09—Uses for paper making sludge
- Y10S162/10—Computer control of paper making variables
Definitions
- the present invention relates to a monitoring device for monitoring a continuously flowing belt-shaped object, and for example, to a monitoring device for monitoring a paper flow of a paper machine.
- the machine In conventional paper machines, operators regularly monitor the patrol during operation and check the operating status to ensure stable operation of the machine.
- a paper breakage detection sensor consisting of, for example, an infrared irradiator arranged on the front side of the traveling paper and a detector arranged on the back side of the traveling paper.
- the detector detects infrared light and recognizes that the paper has broken.
- a light source is placed on one side and multiple cameras are placed on the other side, and the light from the light source that has passed through the running paper is photographed by multiple cameras, and the running paper is separated from the roll. It monitors changes in points quantitatively and monitors for abnormalities in the paper machine.
- the present invention has been made in view of such a situation, and a monitoring device capable of detecting a paper traveling abnormality more reliably and preventing the traveling abnormality even in a poor installation environment, and preventing a paper break beforehand.
- the purpose is to provide. It is another object of the present invention to prevent a running abnormality of a continuously flowing strip-shaped object.
- the present invention has been made in order to solve such a problem, and irradiates light from a light source to a side end surface of a continuously flowing strip-shaped object to reflect the object, and reflects the object by the reflected light.
- the method is characterized in that by photographing the image and processing the image, quantitatively monitoring the amount of fluctuation of the traveling route of the object.
- the present invention can be applied to, for example, monitoring a place where a paper machine easily breaks. That is, the traveling paper in the paper machine is irradiated with light from a light source, the traveling paper is photographed by the reflected light, and the image is image-processed to obtain Diagnose abnormalities of the paper machine by quantitatively monitoring the amount of change in the peeling point of the running paper from the roll.
- a specific configuration of the present invention includes: a light emitting unit that shines light on a side end surface of a paper traveling by a roll in a paper machine; a photographing unit that captures light of the light emitting unit reflected on a side end surface of the paper; An image processing means for processing an image of the photographing means; and a diagnosis for diagnosing an abnormality of the paper machine by quantitatively monitoring a fluctuation amount of a peeling point of the paper from the roll based on a processing result of the image processing means. Means.
- the light emitting means and the photographing means can be installed only on the machine side.
- the present invention can be applied particularly to a case where a shooting environment of a monitoring part is bad, such as occurrence of a mist.
- a shooting environment of a monitoring part is bad, such as occurrence of a mist.
- the abnormality diagnosis conditions in advance based on the fluctuation amount of the target object in the normal state.
- the abnormality diagnosis condition is affected by various environmental conditions, it is preferable to change the abnormality diagnosis condition according to the change of the environmental condition.
- the conditions for diagnosing an abnormality in the diagnostic means can be changed according to the basis weight and paper amount of paper.
- the device is further provided with an adjusting means for adjusting the draw amount according to the result, thereby preventing the paper from running out.
- the basis weight as used herein refers to the weight per sheet of 1 m 2 paper, and the amount of drowsiness refers to the degree of tension between the parts of the paper machine, and each section of the paper machine. Is determined by the speed difference between the drive rolls.
- FIG. 1 is a side view schematically showing a press sheet of a paper machine to which a monitoring device according to an embodiment of the present invention is applied.
- Fig. 2 is an enlarged view of the Sen-Yu roll exit in the press part of Fig. 1.
- FIG. 3 is a system block diagram of the monitoring device according to one embodiment of the present invention.
- FIG. 4 is a plan view showing a state where a monitoring device is installed near the exit of the roll of FIG. 2 and (b) is a front view thereof.
- FIG. 5A is a longitudinal sectional view of the camera box
- FIG. 5B is a front view of the camera box viewed from the observation window side.
- FIG. 6 is a graph showing the variation of the peeling point obtained by the image processing apparatus, where the vertical axis represents the variation from the reference and the horizontal axis represents time (s).
- the monitoring device monitors the operation state of the paper machine.
- a paper machine is roughly divided into a stock inlet, a wire netting (wire part), a pressing unit (press part), and a drying unit (dry part). It has a winding machine (reel part).
- the selected pulp liquor is injected from a stock inlet onto an endless wire mesh (endless wire).
- Water absorption box (Suction It is dehydrated in a box and passes through a gap (slice) to a certain thickness.
- the felt rotates together with the press rolls, squeezing water and smoothing the paper surface at the same time (formation of paper web). Then, it is heated and dried in the drying section. With a gloss machine, the paper surface is smoothed to produce gloss. Finally, the web is wound by a winder.
- the press part of this embodiment shown in FIG. 1 has four stages of presses, from the first press (1P) to the fourth press (4P).
- a press bottom port 15, a suction port 16 and a paper roll 4 are provided.
- the wet paper web 1 is transported in the direction of arrow A by the rolls 2, 14 to 16, 4 and the felt 17.
- This wet paper web 1 is a paper web formed by a wire part and transferred to a press part.
- Felt 17 is moving in the direction of arrow B.
- a shower (not shown) is installed near the center-roll 2 to clean it.
- the wet paper web 1 is separated from the felt 17 and, as shown in Fig. 2, the wet paper web 1 separates from the surface of the paper roll 2 at the peeling point 3 (peeling). Then, it is transferred to the next process via the paper roll 4.
- the peeling point 3 since the wet paper 1 is not supported by the felt 17 or the like (open drawer), it is the place where the paper cutting (paper cut) is most likely to occur.
- monitoring of the peeling point 3 is an important factor in preventing paper breakage and ensuring stable operation.
- the monitoring device monitors the behavior change near the separation point 3.
- the peeling point 3 here is a point at which the paper edge in the width direction of the wet paper 1 is separated from the paper roll 2.
- the monitoring devices are camera 5, image processing device 6, monitor TV 7, A calculator 8 and a light source 9 are provided.
- the camera 5 is connected to an image processing device 6, and the image processing device 6 is connected to a mobile TV 7 and a computer 8.
- a metal halide light source (metal halide lamp) is used as the light source 9.
- This metal halide light source is a high-intensity discharge lamp that emits light by discharging in a mixture of a metal vapor and a dissociation product of a halide, and is a powerful light source with a flat wavelength distribution.
- the camera 5 is disposed at the same position as the light source 9, and the light emitting surface of the light source 9 and the lens of the camera 5 are both side end surfaces of the wet paper 1. Is aimed at 1a. That is, the light source 9 shines the light 9a on the side end face 1a of the wet paper 1, and the camera 5 captures the reflected light 9b.
- the camera 5 is completely covered by the camera box 10 as shown in (a) and (b) of FIG. Since the camera box 10 is provided with a transparent member observation window 10 a on the lens side 5 a of the camera 5, the camera 5 can capture external light even in the camera box 10.
- the outer surface of the observation window 10a is coated with an anti-staining coating. Furthermore, the following mechanism prevents the observation window 10a from being soiled. That is, a cover 11 having an opening 11 a is mounted above the observation window 10 a of the camera box 10. Air 12 is continuously supplied into the inside of the cover 11, whereby an air layer, that is, an air curtain 12 a flowing from top to bottom, is formed on the outer surface of the observation window 10 a.
- the air-curtain 12a prevents mist and the like from adhering to the outer surface of the observation window 10a, so that it is possible to eliminate or reduce a shooting obstacle of the camera 5 due to the mist.
- the coating and the air car The mist 12a is used to prevent mist adherence and remove mist adherence.
- the present invention is not limited to this.
- a configuration may be employed in which the mist attached by the centrifugal force generated by rotating the observation window 10a is removed.
- the camera 5 is an ultra-small color CCD camera, so the external dimensions of the camera box 10 can be reduced, requiring less installation space, and can be installed in places where space is tight, and the observation window 10a is also smaller. Therefore, the ratio of dirt due to mist adhesion can be reduced.
- mist is generated by the shower (not shown) for washing the roll 1 as described above.
- mist (not shown) provided in the roll 2 Therefore, mist countermeasures are important for peeling point monitoring using camera 5.
- the combination of the camera 5 and the light source 9 is arranged on the machine side.
- the present invention is not limited to this, and it is arranged on both the machine side and the operation side to monitor both end faces. Is also good.
- the present invention even if it is arranged on both the machine side and the operation side, there is a concern that light from the other light source will enter one camera, but since the width of the wet paper 1 is generally several meters, It is not affected by the light of the other light source.
- the color image obtained by the camera 5 is analyzed by the image processing device 6, and unnecessary lines are deleted. That is, a monochrome image is extracted from the color image using the green component, and after removing the noise component, the side end surface of the wet paper 1 is emphasized and binarized using the spatial filter.
- the roll portion in the image is registered as a mask image, and the break at the peeling point on the side end face 1a is extracted from the binarized image from which the mask image has been removed.
- This image processing is a simple and effective algorithm, Image processing can be performed at high speed, and frequency analysis of side edge surface variation can be performed.
- the image processing After the image processing, it is output to the monitor TV 7 (see Fig. 3). Since the image on the monitor TV 7 has the same viewpoint as when the operator visually monitors the image, the operator does not feel uncomfortable and is operator friendly.
- the vertical axis represents the amount of change from the reference
- the horizontal axis represents time (s).
- the peeling point 3 of the wet paper 1 fluctuates as shown in the figure, and the state of the fluctuation can be grasped from this graph. Therefore, the variation of the peeling point 3 and the allowable value of the peeling point variation period (abnormality diagnosis condition) can be set in the computer 8 (see FIG. 3).
- the computer 8 is provided with a function (diagnosis means) for quantitatively monitoring the amount of change in the peeling point and diagnosing the abnormality of the paper machine. May be provided. In this way, it is possible to predict in advance a machine abnormality that will result in a sheet break.
- an alarm or the like can be issued to notify the operator of the abnormal situation, and the draw amount can be changed so as not to cause a paper break. That is, by changing the draw amount, it is possible to control the press part so that the shape of the profile is adjusted.
- the amount of change in the peeling point is important in predicting the paper breakage, and can prevent the paper breakage.
- the adjustment of the amount of the drawer may be configured to be automatically controlled by adjusting means (not shown) connected to the computer 8.
- the peeling point is controlled to a fixed peeling position.
- the monitoring device applies light from a light source to a side end surface of a continuously flowing strip-shaped object, reflects the light, captures the object by the reflected light, and processes the image by image processing. By doing so, the amount of change in the travel route of the target object is quantitatively monitored, so that a change in travel of the target object can always be grasped, and accurate monitoring can be performed.
- the monitoring device includes: a light emitting unit that shines light on a side end surface of a paper traveling by a roll in a paper machine; Image processing means for processing the image of the photographing means, and diagnosis for diagnosing abnormality of the paper machine by quantitatively monitoring the amount of change of the peeling point of the paper from the roll based on the processing result of the image processing means. Means, the change of the traveling route of the traveling paper can always be grasped, and accurate monitoring can be performed. If the light emitting means and the photographing means are installed only on the machine side, it is not necessary to install the light emitting means and the photographing means on the operation side. .
- a means for preventing contamination of the light receiving window of the photographing means is further provided, it is possible to eliminate or reduce a photographing trouble and obtain a good image.
- a metal halide light source is used as a light source in the light emitting means, it is possible to improve the separation from peripheral devices in image processing, and to perform accurate monitoring even in a poor imaging environment.
- the conditions for diagnosing abnormalities in the diagnostic means can be changed depending on the basis weight and the amount of draw of the paper, the accuracy of diagnosis is improved, and optimal monitoring can be performed.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Paper (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02733241A EP1391551A4 (en) | 2001-05-30 | 2002-05-29 | MONITORING DEVICE |
US10/474,041 US7138036B2 (en) | 2001-05-30 | 2002-05-29 | Monitoring device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001-161885 | 2001-05-30 | ||
JP2001161885A JP3524888B2 (ja) | 2001-05-30 | 2001-05-30 | 監視装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002097192A1 true WO2002097192A1 (fr) | 2002-12-05 |
Family
ID=19005097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/005207 WO2002097192A1 (fr) | 2001-05-30 | 2002-05-29 | Dispositif de surveillance |
Country Status (5)
Country | Link |
---|---|
US (1) | US7138036B2 (ja) |
EP (1) | EP1391551A4 (ja) |
JP (1) | JP3524888B2 (ja) |
CN (1) | CN1234935C (ja) |
WO (1) | WO2002097192A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4560772B2 (ja) * | 2004-04-13 | 2010-10-13 | 王子製紙株式会社 | 抄紙機紙切れ予測装置、抄紙機紙切れ予測方法およびコンピュータプログラム |
CA2609029C (en) * | 2005-06-16 | 2014-08-05 | Thermo Gamma-Metrics Llc | In-stream spectroscopic elemental analysis of particles being conducted within a gaseous stream |
FI121859B (fi) * | 2008-11-25 | 2011-05-13 | Metso Automation Oy | Menetelmä rainan paikkauksen ohjaamiseksi välirullaimella vastaava järjestelmä |
FI126031B (fi) | 2011-04-14 | 2016-05-31 | Valmet Technologies Inc | Menetelmä tapahtumien tarkastelemiseksi sellukuivaimen päätyosan alueella ja sellukuivain |
CN102901747B (zh) * | 2012-10-24 | 2016-05-18 | 湖南三德科技股份有限公司 | 一种用于提高灰熔融性测试仪取像质量的方法及其装置 |
US11920299B2 (en) | 2020-03-06 | 2024-03-05 | Ibs Of America | Formation detection system and a process of controlling |
US11932991B2 (en) * | 2022-08-03 | 2024-03-19 | Industrial Video Solutions Inc. | Systems and methods for monitoring and controlling industrial processes |
US11816893B1 (en) | 2022-08-03 | 2023-11-14 | Industrial Video Solutions Inc. | Systems and methods for monitoring and controlling industrial processes |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1987004248A1 (fr) * | 1985-12-31 | 1987-07-16 | Centre Technique De L'industrie Des Papiers, Carto | Dispositif pour detecter une amorce de dechirure sur une feuille lors de sa fabrication |
JPH0465594A (ja) * | 1990-05-30 | 1992-03-02 | Mitsubishi Paper Mills Ltd | 抄紙乾燥機の断紙検知方法およびそれに使用されるドライヤーカンバス |
JPH06294092A (ja) * | 1993-04-06 | 1994-10-21 | Toshiba Corp | 抄紙機制御装置 |
EP1002754A1 (en) * | 1998-11-17 | 2000-05-24 | Mitsubishi Heavy Industries, Ltd. | Monitoring apparatus |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4486098A (en) * | 1982-02-23 | 1984-12-04 | Hauni-Werke Korber & Co. Kg | Method and apparatus for testing the ends of cigarettes or the like |
GB8622972D0 (en) | 1986-09-24 | 1986-10-29 | Crosfield Electronics Ltd | Sensing device |
JP2738066B2 (ja) | 1989-10-17 | 1998-04-08 | 石川島播磨重工業株式会社 | 抄紙機における地合制御方法及び装置 |
JPH0659361A (ja) | 1992-08-07 | 1994-03-04 | Fuji Photo Film Co Ltd | ハロゲン化銀カラー写真感光材料 |
JPH07315647A (ja) | 1994-05-27 | 1995-12-05 | Toshiba Corp | 紙弛み調整制御装置 |
-
2001
- 2001-05-30 JP JP2001161885A patent/JP3524888B2/ja not_active Expired - Lifetime
-
2002
- 2002-05-29 CN CNB028079663A patent/CN1234935C/zh not_active Expired - Fee Related
- 2002-05-29 US US10/474,041 patent/US7138036B2/en not_active Expired - Fee Related
- 2002-05-29 EP EP02733241A patent/EP1391551A4/en not_active Withdrawn
- 2002-05-29 WO PCT/JP2002/005207 patent/WO2002097192A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1987004248A1 (fr) * | 1985-12-31 | 1987-07-16 | Centre Technique De L'industrie Des Papiers, Carto | Dispositif pour detecter une amorce de dechirure sur une feuille lors de sa fabrication |
JPH0465594A (ja) * | 1990-05-30 | 1992-03-02 | Mitsubishi Paper Mills Ltd | 抄紙乾燥機の断紙検知方法およびそれに使用されるドライヤーカンバス |
JPH06294092A (ja) * | 1993-04-06 | 1994-10-21 | Toshiba Corp | 抄紙機制御装置 |
EP1002754A1 (en) * | 1998-11-17 | 2000-05-24 | Mitsubishi Heavy Industries, Ltd. | Monitoring apparatus |
Non-Patent Citations (1)
Title |
---|
See also references of EP1391551A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1391551A4 (en) | 2005-01-05 |
CN1501999A (zh) | 2004-06-02 |
US7138036B2 (en) | 2006-11-21 |
US20040112560A1 (en) | 2004-06-17 |
JP3524888B2 (ja) | 2004-05-10 |
CN1234935C (zh) | 2006-01-04 |
JP2002348794A (ja) | 2002-12-04 |
EP1391551A1 (en) | 2004-02-25 |
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