Process state monitoring device

Abstract

This process state monitoring device displays a main screen for diagnosing abnormalities comprising: a trigger information display area for displaying diagnostic data; a criteria setting area for setting criteria for detecting changes in states in the trigger information display area; a factor candidate variable display area for listing the names of contributing factor candidate variables when there a change in the state of a process or an abnormality has been detected according to the diagnostic data in the trigger information display area and the criteria in the criteria setting area; a trend graph display link area for receiving instructions for displaying graphs of trends in the factor candidate variables displayed in the factor candidate variable display area; and a factor candidate variable trend display area for displaying graphs of trends in the factor candidate variables when an instruction has been entered in the trend graph display link area.

Description

technical field [0001] Embodiments of the invention relate to process state monitoring devices. Background technique [0002] In the operation and treatment of sewage treatment process, sludge digestion process, water purification process, water supply and distribution process, petrochemical process, semiconductor manufacturing process, etc. , Coexistence of cost saving application. [0003] Here, as an example of the predetermined target performance, compliance with the discharge water quality standard can be mentioned in the sewage treatment process, ensuring the predetermined production amount of generated energy (methane, hydrogen, etc.) in the sludge digestion process can be mentioned, and in the water purification process Among them, compliance with water supply and distribution water quality standards through disinfection, sterilization, and the like can be mentioned. [0004] On the other hand, as examples of energy-saving and cost-saving operations, reduction of b...

AI Technical Summary

Problems solved by technology

[0009] However, in the above-mentioned method, it is very difficult to always monitor the abnormality that will occur in which item of the equipment measurement items affecting hundreds to thousands of items, and it is actually necessary to monitor only a limited number of items.

[0010] In addition, although a plurality of process variables usually have a certain relationship (correlation, etc.) with each other due to physical and artificial constraints, in monitoring based on the management limit value, only the above-mentioned variables can be neglected. relationship monitoring

That is, when an abnormality occurs in a certain process variable, it is difficult to easily judge whether the abnormality occurs only in this variable, or whether the abnormality also occurs in other variables, and the relationship with other variables collapses. abnormality of the process

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