Method for monitoring and analyzing a process
AssigneeLiqum Paper Oy
InventorSakari Laitinen-Vellonen
Life of this patent
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Abstract
The invention relates to a method for monitoring and analyzing a production process. In the method, a large number of variables are measured from the process, with the aid of these variables, fingerprints according to a good and a poor process situation, relative to runnability, are defined in several sub-processes and are then stored in a memory, the stored fingerprints are compared with fingerprints obtained in a normal process situation, on the basis of the comparison, the difference, displayed graphically to the user, between the recorded good situation and the momentary process situation is defined.
Claims6
A method for monitoring and analysing a process, in which method
- a large number of variables are measured from the process,
- with the aid of these variables, a fingerprint according to a good process situation, relative to runnability, is defined and then stored in a memory,
- the stored fingerprints are compared with fingerprints obtained in a normal process situation,
- on the basis of the comparison, the difference, displayed graphically to the user, between the recorded good situation and the momentary process situation is defined,
- characterized in that the definition according to a good process situation is made separately in several sub-processes and at least one specific index in the selected sub-process is defined relative to runnability, according to a poor process situation, in order to detect a machine-specific critical situation.
Dependencies are inferred from the claim text.