Global Patent Index - EP 1018001 A2

EP 1018001 A2 2000-07-12 - 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

EP 1018001 A2 (EN)

Application

EP 98945727 A

Priority

  • SE 9801710 W
  • SE 9703450 A

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 (main, further and additional classification)

G01N 29/02

IPC 8 full level (invention and additional information)

G01N 29/04 (2006.01); G01N 29/30 (2006.01); G01N 29/44 (2006.01)

CPC (invention and additional information)

G01N 29/4427 (2013.01); G01N 29/046 (2013.01); G01N 29/30 (2013.01); G01N 2291/014 (2013.01); G01N 2291/02416 (2013.01); G01N 2291/02836 (2013.01)

Citation (search report)

See references of WO 9915890A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9915890 A2 19990401; WO 9915890 A3 19990520; AU 9290498 A 19990412; EP 1018001 A2 20000712; SE 9703450 D0 19970924; SE 9703450 L 19990325

INPADOC legal status


2002-10-16 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020403

2000-07-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000401

2000-07-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE