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Method for enhancing reliability of process based on distributed control node used in open process automation system

A technology for controlling nodes and nodes, applied in the field of management systems, can solve the problem that the system is difficult to achieve reliability

Active Publication Date: 2019-03-29
YOKOGAWA ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult for a system developed under an open architecture to achieve the same level of reliability as a proprietary system developed by a particular manufacturer

Method used

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  • Method for enhancing reliability of process based on distributed control node used in open process automation system
  • Method for enhancing reliability of process based on distributed control node used in open process automation system
  • Method for enhancing reliability of process based on distributed control node used in open process automation system

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Embodiment Construction

[0026] Specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. For consistency, the same elements in the various figures are indicated by the same reference numerals.

[0027] In the following detailed description of embodiments of the invention, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. In other instances, well known features have not been described in detail to avoid unnecessarily complicating the description.

[0028] Under the open architecture, the DCN used in PAS is limited to handle the minimum number of I / O signals, so it requires a relatively lower level of reliability and availability than traditional controllers. However, even in an open-architecture PAS, critical processes still exist, which require ...

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Abstract

A management system for a plant facility is disclosed. The system includes a first field device that measures a process value, a first control node that calculates a first control value based on the process value, a second field device that operates according to the first control value, and an application node that configures one or more parameters for calculating the first control value. The first control node compares the first control value with a second control value calculated by one of the first field device, the first control node, a second control node, and the application node. When determining that the first and the second control value are identical, the first control node sets the first control value to the second field device.

Description

technical field [0001] The present invention generally relates to a management system for a plant and a method for managing a plant. More specifically, the present invention relates to a method and corresponding system for improving process reliability using distributed control nodes in an open process automation system. Background technique [0002] Factories typically utilize process automation systems (PAS) to implement advanced automated operations for controlling and managing various types of process data (eg, pressure, temperature, flow, etc.) in industrial processes. [0003] In particular, PAS used in plants producing chemicals, oil or gas related products must meet high standards in terms of availability and reliability. Availability refers to the ability of a system to continue operating even when errors occur, while reliability refers to the ability to detect errors and stop the system and / or switch to a backup system for continued operation without damage to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCG05B19/4184G05B19/042G06F11/1608G06F11/1629G06F11/1637G06F11/1654G06F11/2025G05B2219/25428G06F13/20Y02P90/02H04L9/40G05B19/0426H04L49/351H04L67/10H04L67/12
Inventor 佐藤敦
Owner YOKOGAWA ELECTRIC CORP
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