D - Textiles – Paper – 21 – G
Patent
D - Textiles, Paper
21
G
D21G 9/00 (2006.01) D21F 7/04 (2006.01) G01N 21/89 (2006.01)
Patent
CA 2478862
The invention concerns a method and system for maintaining runnability in a paper or board machine, which machine for making paper or board includes two or more successive section complexes, such as a web formation section (10), a press section (11), a drying section (12) and a finishing device (13), and wherein at the section complex (10 - 13) (i) cleaning measures are carried out, (ii) the cleanness level is checked, (iii) if the cleanness level does not meet the criteria established for it, the procedure continues from step (i), otherwise, (iv) the cleanness level is accepted. Checking of the cleanness level is performed by using computer vision and the observations obtained by computer vision are compared with a criterion value established to correspond with the required cleanness level, and based on this value the procedure either continues with cleaning measures (i) or the cleanness level is accepted (iv).
L'invention concerne un procédé et un système permettant de maintenir le comportement machine dans une machine à papier ou à carton, laquelle comprend deux ou plus de deux complexes de parties successives, du type: partie formation de bande (10), partie presse (11), sécheuse (12) et dispositif de finissage (13). Un tel complexe (10-13) assure les opérations suivantes: (i) opérations de nettoyage, (ii) vérification du niveau de propreté, (iii) poursuite de la procédure depuis l'étape (i) si le niveau de propreté ne correspond pas aux critères établis, ou bien (iv) acceptation du niveau de propreté. La vérification du niveau de propreté est accomplie en vision par ordinateur compte tenu des observations que fournit cette vision, et comparée avec une valeur de critère établi, par rapport au niveau de propreté requis, et la procédure se poursuit, si la propreté est insuffisante par rapport à cette valeur, à partir de l'étape (i), ou bien le niveau de propreté est accepté (iv).
Ahvenainen Pasi
Hietanen Pekka
Kielinen Jari
Koljonen Veli-Pekka
Lampinen Jari
Gowling Lafleur Henderson Llp
Metso Paper Inc.
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