EP 1018001 A2 20000712 - METHOD AND DEVICE FOR PROCESS MONITORING
Title (en)
METHOD AND DEVICE FOR PROCESS MONITORING
Title (de)
VERFAHREN UND VORRICHTUNG ZUR PROZESSÜBERWACHUNG
Title (fr)
PROCEDE ET DISPOSITIF DE SURVEILLANCE DE PROCESSUS
Publication
Application
Priority
- SE 9801710 W 19980923
- SE 9703450 A 19970924
Abstract (en)
[origin: WO9915890A2] 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.
IPC 1-7
IPC 8 full level
G01N 29/04 (2006.01); G01N 29/30 (2006.01); G01N 29/44 (2006.01)
CPC (source: EP)
G01N 29/046 (2013.01); G01N 29/30 (2013.01); G01N 29/4427 (2013.01); G01N 2291/014 (2013.01); G01N 2291/02416 (2013.01); G01N 2291/02836 (2013.01)
Citation (search report)
See references of WO 9915890A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9915890 A2 19990401; WO 9915890 A3 19990520; AU 9290498 A 19990412; EP 1018001 A2 20000712; SE 9703450 D0 19970924; SE 9703450 L 19990325
DOCDB simple family (application)
SE 9801710 W 19980923; AU 9290498 A 19980923; EP 98945727 A 19980923; SE 9703450 A 19970924