DE10253822A1 - Sensors, for monitoring the production of paper/cardboard webs, are given an on-line calibration, using laboratory measurement data which generate calibration software to correct sensor measurements - Google Patents
Sensors, for monitoring the production of paper/cardboard webs, are given an on-line calibration, using laboratory measurement data which generate calibration software to correct sensor measurements Download PDFInfo
- Publication number
- DE10253822A1 DE10253822A1 DE2002153822 DE10253822A DE10253822A1 DE 10253822 A1 DE10253822 A1 DE 10253822A1 DE 2002153822 DE2002153822 DE 2002153822 DE 10253822 A DE10253822 A DE 10253822A DE 10253822 A1 DE10253822 A1 DE 10253822A1
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- DE
- Germany
- Prior art keywords
- sensor
- laboratory
- calibration
- sensors
- measurement
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
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- 238000005259 measurement Methods 0.000 title claims abstract description 27
- 238000011545 laboratory measurement Methods 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000011111 cardboard Substances 0.000 title claims description 5
- 239000011087 paperboard Substances 0.000 title claims description 5
- 238000012544 monitoring process Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000012937 correction Methods 0.000 claims abstract description 6
- 238000004458 analytical method Methods 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 abstract description 9
- 239000002657 fibrous material Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 7
- 239000000725 suspension Substances 0.000 description 6
- 239000000123 paper Substances 0.000 description 4
- 238000000513 principal component analysis Methods 0.000 description 3
- 238000004886 process control Methods 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 241000819038 Chichester Species 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012628 principal component regression Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/78—Controlling or regulating not limited to any particular process or apparatus
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/0009—Paper-making control systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D1/00—Measuring arrangements giving results other than momentary value of variable, of general application
-
- 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
- G01N33/343—Paper pulp
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
- G01N35/00594—Quality control, including calibration or testing of components of the analyser
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
- G01N35/00594—Quality control, including calibration or testing of components of the analyser
- G01N35/00693—Calibration
Landscapes
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Quality & Reliability (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Die Erfindung betrifft eine Verfahren zum Kalibrieren von Sensoren, die bei der Herstellung einer Faserstoftbahn, insbesondere einer Papier- oder Kartonbahn, dazu dienen, für den Herstellungsprozess benötigte Parameter zu messen.The invention relates to a method for calibrating sensors used in the production of a fiber web, especially a paper or cardboard web, are used for the manufacturing process needed To measure parameters.
Aus der deutschen Offenlegungsschrift
Es ist die Aufgabe der Erfindung, das bekannte Messverfahren weiter zu verbessern.It is the object of the invention to further improve the known measuring method.
Erfindungsgemäß wird diese Aufgabe bei einem Verfahren der eingangs genannten Art dadurch gelöst, dass Labormessungen durchgeführt werden und dass die daraus gewonnenen Labor-Messdaten vorzugsweise nach jeder Messung zur Erzeugung einer Kalibriersoftware benutzt werden und dass die Labor-Messdaten zur Korrektur der von den Sensoren erzeugten Online-Messwerte benutzt werden.According to the invention, this task is performed by one Process of the type mentioned at the outset is achieved by carrying out laboratory measurements and that the laboratory measurement data obtained from this preferably after each Measurement can be used to generate calibration software and that the laboratory measurement data to correct the ones generated by the sensors Online measured values can be used.
Auf diese Weise lassen sich Abweichungen der von den Sensoren gemessenen Messdaten umgehend und einfach korrigieren. Die Korrektur erfolgt automatisch und erfordert keinen manuellen Eingriff.In this way, deviations of the Correct measurement data measured by the sensors immediately and easily. The correction is done automatically and does not require manual Intervention.
Mittels der gemäß der vorliegenden Erfindung einsetzbaren online und automatisch messenden Sensoren lassen sich nicht nur die Stoffdichte oder der Aschegehalt einer Faserstoffbahn bestimmen, sondern auch alle anderen messbaren Parameter. Dies sind beispielsweise andere Faserstoffe, der pH-Wert, der Luftgehalt der Faserstoffbahn, deren Ladung, Feuchte, usw..By means of the according to the present invention online and automatically measuring sensors can be used not just the consistency or the ash content of a fibrous web determine, but also all other measurable parameters. these are for example other fibers, the pH value, the air content of the Fibrous web, its load, moisture, etc.
Vorteilhafte Weiterbildungen des Verfahrens ergeben sich aus den Unteransprüchen, der Beschreibung und aus der Zeichnung.Advantageous further developments of the Process result from the dependent claims, the description and from the drawing.
Von Vorteil ist bei einer Ausgestaltung des Verfahrens, dass aus einem Vergleich der Labor-Messdaten und der von einem Sensor gemessenen Daten die Abweichung jedes Sensor-Messwertes von dem Labor-Messwert errechnet wird und dass daraus ein Kalibrierparameter mittels einer Gewichtung neu berechnet wird.Is advantageous in one configuration of the method that from a comparison of the laboratory measurement data and the data measured by a sensor is the deviation of each sensor measurement is calculated from the laboratory measured value and that a calibration parameter is recalculated using a weighting.
Von Vorteil ist es außerdem, wenn nach jeder Messung eines Labor-Messwertes eine Korrektur des Online-Messwertes des Sensors erfolgt.It is also an advantage if after each measurement of a laboratory measured value a correction of the Online measured value of the sensor takes place.
In einer vorteilhaften Weiterbildung des Verfahrens werden zur Kalibrierung andere Prozessinformationen oder andere Sensor-Messwerte einbezogen. Dies bedeutet, dass die Sensor-Messwerte eines Sensors anhand von anderen Sensoren ermittelten Werten gewichtet und korrigiert werden. Dadurch lassen sich Abhängigkeiten einer von einem Sensor gemessenen Größe von anderen Messparametern berücksichtigen. Hierbei lässt sich auch beispielsweise eine zeitliche Drift von Messwerten etwa dergestalt berücksichtigen, dass die unmittelbar vor den aktuellen Messwerten gemessenen Werte stärker in die Korrektur der aktuellen Messwerte einfließen als ältere Messwerte.In an advantageous further training The process uses other process information for calibration or other sensor readings included. This means that the Sensor measured values of a sensor determined using other sensors Values are weighted and corrected. This allows dependencies a size measured by a sensor from other measurement parameters consider. Here leaves there is also, for example, a temporal drift of measured values consider, that the values measured immediately before the current measurement values stronger flow into the correction of the current measured values than older measured values.
Von Vorteil erweist es sich außerdem, wenn die Sensor-Messwerte mit multivariater Regression korrigiert werden. Grundsätzlich lassen sich die Sensor-Messwerte mit jedem Regressionsverfahren korrigieren.It is also an advantage if the sensor readings are corrected with multivariate regression become. in principle the sensor readings can be made using any regression method correct.
Als besonders geeignet erweisen sich folgende Verfahren: die Partial Least Square Regression, die Principle Component Analysis (NIPALS) oder die Ordinary Multivariate Regression. Diese Verfahren sind allgemein bekannt. Zum Nachweis wird hier beispielhaft auf das Buch „Multivariate Calibration" von H.Martens, T. Naes, Verlag John Wiley & Sons, Chichester, New York, Brisbane, Toronto, Singapore, 1998 verwiesen. Dort wird beispielsweise die „Principal Component Regression" beschrieben, die sich auf die „Principal Component Analysis (PCA)" stützt. Bei diesem Verfahren werden sogenannte Prinzipalkomponenten (principal components) einer Größe X berechnet und anschließend nur einige der Prinzipalkomponenten für eine Regression berücksichtigt. Zu den Algorithmen, die zu einer PCA-Lösung führen, gehört der NIPALS-Algorithmus, der die Tatsache ausnutzt, dass die Prinzipalkomponenten orthogonal zu einander sind (vgl. Kapitel 3.4.2 ff. des Buches).Prove to be particularly suitable the following procedures: the partial least square regression, the principle Component Analysis (NIPALS) or Ordinary Multivariate Regression. These methods are generally known. As an example, here is a demonstration to the book “Multivariate Calibration "by H.Martens, T. Naes, published by John Wiley & Sons, Chichester, New York, Brisbane, Toronto, Singapore, 1998. There, for example, the “Principal Component Regression " based on the “Principal Component Analysis (PCA) " In this process, so-called principal components (principal components) of a size X calculated and subsequently only some of the principal components are considered for a regression. The algorithms that lead to a PCA solution include the NIPALS algorithm, which takes advantage of the fact that the principal components are orthogonal to are mutually exclusive (see Chapter 3.4.2 ff. of the book).
Als vorteilhaft erweist es sich auch, wenn die Kalibrierung der Sensoren in einem vorgegebenen Zeitabstand erfolgt. Dadurch ist sichergestellt, dass Änderungen der Messwerte im Laufe der Zeit ein bestimmtes Maß nicht überschreiten können.It also proves to be advantageous if the calibration of the sensors in a predetermined time interval he follows. This ensures that changes in the measured values in the Cannot exceed a certain level over time.
Die Erfindung bezieht sich ebenfalls auf eine Vorrichtung zur Durchführung eines Verfahrens. Die erfindungsgemäße Vorrichtung weist mindestens einen Sensor zur Durchführung einer Online-Messung auf. Ferner ist eine Labor-Messeinrichtung zur Gewinnung eines exakten Labor-Messwertes vorhanden.The invention also relates on a device for performing of a process. The device according to the invention has at least a sensor to carry out an online measurement. There is also a laboratory measuring device available to obtain an exact laboratory measurement.
In einer vorteilhaften Weiterbildung der Vorrichtung ist eine Recheneinrichtung vorhanden, die aus einem Vergleich der von der Labor-Messeinrichtung gewonnenen Messwerte mit den von dem Sensor gewonnenen Messwerten ein korrigiertes Messergebnis erzeugt, das dann dem Sensor oder den Sensoren zugeführt wird.In an advantageous further training the device has a computing device which consists of a Comparison of the measured values obtained from the laboratory measuring device a corrected measurement result with the measurement values obtained from the sensor generated, which is then fed to the sensor or sensors.
Nachfolgend soll die Erfindung an zwei Ausführungsbeispielen näher erläutert werden. In der beigefügten Zeichnung zeigt die einzige Figur einen schematischen Aufbau der erfindungsgemäßen Messanordnung.The invention is intended to be described below two embodiments are explained in more detail. In the accompanying Drawing shows the only figure a schematic structure of the Measuring arrangement according to the invention.
Bezüglich des Aufbaus einer Papier-
oder Kartonmaschine wird auf die eingangs bereits zitierte deutsche
Offenlegungsschrift
Bei einer derartigen Papier- oder
Kartonmaschine werden eine Vielzahl von Messgrößen mittels Sensoren an verschiedenen
Messstellen als Online-Messungen 1 (Figur) gemessen. Hierzu sind
entsprechende Sensoren entweder im Rahmen des Stoffzuführsystem
angeordnet, wie beispielsweise ein in der vorgenannten deutschen
Offenlegungsschrift
Zur Korrektur der von dem Sensor
Das bei der Labormessung
Optional fließen in den Kalibriervorgang
weitere Prozessinformationen
Die Online Calibration
- 11
- Online-MessungOnline measurement
- 22
- Sensorsensor
- 33
- Leitungmanagement
- 44
- Labormessunglaboratory measurement
- 55
- VentilValve
- 66
- Online CalibrationOn-line Calibration
- 77
- Labormessunglaboratory measurement
- 88th
- Bidirektionale Datenleitungbidirectional data line
- 99
- Prozessinformationenprocess information
- 1010
- Datenleitungendata lines
- 1111
- Steuerleitungcontrol line
- 1212
- Zentrales Prozessleitsystemcentral process Control System
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002153822 DE10253822A1 (en) | 2002-11-18 | 2002-11-18 | Sensors, for monitoring the production of paper/cardboard webs, are given an on-line calibration, using laboratory measurement data which generate calibration software to correct sensor measurements |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002153822 DE10253822A1 (en) | 2002-11-18 | 2002-11-18 | Sensors, for monitoring the production of paper/cardboard webs, are given an on-line calibration, using laboratory measurement data which generate calibration software to correct sensor measurements |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10253822A1 true DE10253822A1 (en) | 2004-05-27 |
Family
ID=32185828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2002153822 Withdrawn DE10253822A1 (en) | 2002-11-18 | 2002-11-18 | Sensors, for monitoring the production of paper/cardboard webs, are given an on-line calibration, using laboratory measurement data which generate calibration software to correct sensor measurements |
Country Status (1)
Country | Link |
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DE (1) | DE10253822A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1559835A1 (en) * | 2004-01-22 | 2005-08-03 | Voith Paper Patent GmbH | Apparatus and process for applying on both sides of a substrate a fluid or pasty medium with at least one coater on a traveling paper web, in particular of paper or cardboard, as well as a process useful in connection therewith for determining of surface related separate coatings |
EP1614801A1 (en) * | 2004-07-08 | 2006-01-11 | Voith Paper Patent GmbH | Machine for the manufacture of a fibrous web |
WO2008145448A1 (en) * | 2007-06-01 | 2008-12-04 | Voith Patent Gmbh | Method and device for the production of a fibrous web |
WO2018024663A1 (en) * | 2016-08-05 | 2018-02-08 | Voith Patent Gmbh | Sensor monitoring |
CN110108863A (en) * | 2019-05-23 | 2019-08-09 | 杭州衡正检测技术有限公司 | A kind of portable calibrating installation applied to paper and cardboard detecting instrument |
DE102020128966A1 (en) | 2020-11-03 | 2022-05-05 | Tews Elektronik Gmbh & Co. Kg | Procedure for calibrating a measuring device |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991010904A1 (en) * | 1990-01-11 | 1991-07-25 | Pulp And Paper Research Institute Of Canada | Acoustic emission monitoring of wood chip refiners |
DE3886336T2 (en) * | 1987-10-06 | 1994-06-09 | Measurex Corp | Method and device for the continuous determination of the strength of a paper web. |
DE4390253T1 (en) * | 1992-01-24 | 1995-01-26 | Abb Stroemberg Drives Oy | Method and device for determining the properties of wood pulp |
DE3854843T2 (en) * | 1987-10-05 | 1996-08-08 | Measurex Corp | Method and arrangement for the continuous determination of paper strength |
DE19510008C2 (en) * | 1995-03-23 | 1997-01-30 | Siemens Ag | Process and device for process control in pulp and / or paper production |
US5654799A (en) * | 1995-05-05 | 1997-08-05 | Measurex Corporation | Method and apparatus for measuring and controlling the surface characteristics of sheet materials such as paper |
DE19653477C2 (en) * | 1996-12-20 | 1999-04-22 | Siemens Ag | Process and device for process control in the manufacture of paper |
DE69610460T2 (en) * | 1995-05-30 | 2001-02-08 | Abb Industrial Systems Inc., Columbus | Method and device for monitoring and calibration of a process measuring device |
DE10043142A1 (en) * | 2000-08-31 | 2001-03-01 | Voith Paper Patent Gmbh | Stock inlet control uses pulp density sensors and flow meters to register the pulp condition for comparison with nominal values for deviations to be corrected rapidly by a control circuit |
DE19653532C2 (en) * | 1996-12-20 | 2001-03-01 | Siemens Ag | Process and device for process control in the production of wood pulp |
DE10121775A1 (en) * | 2001-05-04 | 2002-11-07 | Voith Paper Patent Gmbh | Method and device for calibrating material density sensors |
-
2002
- 2002-11-18 DE DE2002153822 patent/DE10253822A1/en not_active Withdrawn
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3854843T2 (en) * | 1987-10-05 | 1996-08-08 | Measurex Corp | Method and arrangement for the continuous determination of paper strength |
DE3886336T2 (en) * | 1987-10-06 | 1994-06-09 | Measurex Corp | Method and device for the continuous determination of the strength of a paper web. |
WO1991010904A1 (en) * | 1990-01-11 | 1991-07-25 | Pulp And Paper Research Institute Of Canada | Acoustic emission monitoring of wood chip refiners |
DE4390253T1 (en) * | 1992-01-24 | 1995-01-26 | Abb Stroemberg Drives Oy | Method and device for determining the properties of wood pulp |
DE19510008C2 (en) * | 1995-03-23 | 1997-01-30 | Siemens Ag | Process and device for process control in pulp and / or paper production |
US5654799A (en) * | 1995-05-05 | 1997-08-05 | Measurex Corporation | Method and apparatus for measuring and controlling the surface characteristics of sheet materials such as paper |
DE69610460T2 (en) * | 1995-05-30 | 2001-02-08 | Abb Industrial Systems Inc., Columbus | Method and device for monitoring and calibration of a process measuring device |
DE19653477C2 (en) * | 1996-12-20 | 1999-04-22 | Siemens Ag | Process and device for process control in the manufacture of paper |
DE19653532C2 (en) * | 1996-12-20 | 2001-03-01 | Siemens Ag | Process and device for process control in the production of wood pulp |
DE10043142A1 (en) * | 2000-08-31 | 2001-03-01 | Voith Paper Patent Gmbh | Stock inlet control uses pulp density sensors and flow meters to register the pulp condition for comparison with nominal values for deviations to be corrected rapidly by a control circuit |
DE10121775A1 (en) * | 2001-05-04 | 2002-11-07 | Voith Paper Patent Gmbh | Method and device for calibrating material density sensors |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1559835A1 (en) * | 2004-01-22 | 2005-08-03 | Voith Paper Patent GmbH | Apparatus and process for applying on both sides of a substrate a fluid or pasty medium with at least one coater on a traveling paper web, in particular of paper or cardboard, as well as a process useful in connection therewith for determining of surface related separate coatings |
EP1614801A1 (en) * | 2004-07-08 | 2006-01-11 | Voith Paper Patent GmbH | Machine for the manufacture of a fibrous web |
US7520962B2 (en) | 2004-07-08 | 2009-04-21 | Voith Paper Patent Gmbh | Machine for producing a fibrous web |
WO2008145448A1 (en) * | 2007-06-01 | 2008-12-04 | Voith Patent Gmbh | Method and device for the production of a fibrous web |
WO2018024663A1 (en) * | 2016-08-05 | 2018-02-08 | Voith Patent Gmbh | Sensor monitoring |
CN110108863A (en) * | 2019-05-23 | 2019-08-09 | 杭州衡正检测技术有限公司 | A kind of portable calibrating installation applied to paper and cardboard detecting instrument |
DE102020128966A1 (en) | 2020-11-03 | 2022-05-05 | Tews Elektronik Gmbh & Co. Kg | Procedure for calibrating a measuring device |
WO2022096342A1 (en) | 2020-11-03 | 2022-05-12 | TEWS ELEKTRONIK GmbH & Co.KG | Method for calibrating a measuring device |
DE102020128966B4 (en) | 2020-11-03 | 2022-12-08 | Tews Elektronik Gmbh & Co. Kg | Procedure for calibrating a measuring device |
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Date | Code | Title | Description |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: VOITH PATENT GMBH, 89522 HEIDENHEIM, DE |
|
8110 | Request for examination paragraph 44 | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20130601 |