Monitoring device and monitoring method for monitoring at least one step of a process run on an industrial site

Abstract

The present invention describes a monitoring device and a monitoring method for monitoring at least one step of a process carried out at an industrial site, which allows to be based on measurement results (MR) by a measuring device (MD) involved in the execution of this step. MD ) provides and detects disturbances quickly, reliably and efficiently based on easily available information determined by the model of this step, which includes: a first-level model for the measuring device (MD), which includes the measurement results representing the device (MD) (MR MD )’s time-dependent basic function (f MD (t;C MD )), by converting the basic function (f MD (t;C MD )) with the measurement results (MR) obtained by the corresponding measuring device (MD) MD ) first attribute (K1) determined by best fit; the second-level model for each first-level model consists of the measurement results (MR) obtained by the corresponding measuring device (MD) MD ) and the corresponding fitting function (f MD (t,D MD ))) between the residuals (Δ MD ); the associated measurement result (MR) is presented for the fault-free execution of the corresponding step MDa ,MR MDb ) of those measuring device pairs (MD a ,MD b ), each three-level model includes measurement results (MR) obtained simultaneously by a corresponding pair of measuring devices (MDa, MDb) during the execution of the corresponding step. MDa ,MR MDb ) between Corr(MR MDa ,MR MDb )) gives the third attribute (K3), and the reference range (R) for each of the attributes (K) K ), including the range within which the corresponding property (K) is expected to occur during trouble-free execution of this step.

Description

technical field [0001] The invention relates to a monitoring device and a monitoring method for monitoring at least one step of a process running at an industrial site for carrying out a predefined process, said industrial site comprising means for running said process at said site, A control unit is included which controls the initiation and execution of the steps of the process, and the monitoring of the measuring equipment involved in the execution of the steps for measuring process-related quantities. Background technique [0002] In almost all industrial sectors, industrial sites designed to perform predefined processes, such as production processes, are used. [0003] An industrial production site is usually quite complex and includes the means for running the process on the site, including a control unit controlling the initiation and execution of the steps of the process and a large number of measuring devices for measuring the quantities related to each of the steps...

AI Technical Summary

Problems solved by technology

[0011] Clearly, identifying process changes that can be used for statistical process monitoring and identifying and determining the appropriate statistical measures to apply to them is not an easy task, and many field devices may not have implemented statistical data collection blocks

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