Process control system with an embedded safety system

A process control system, process control technology, applied in the field of safety systems

Active Publication Date: 2004-09-01
FISHER-ROSEMOUNT SYST INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in many different and disconnected security systems that must be individually configured and monitored within the same installation

Method used

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  • Process control system with an embedded safety system
  • Process control system with an embedded safety system
  • Process control system with an embedded safety system

Examples

Experimental program
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Embodiment Construction

[0014] see now figure 1 , the process plant 10 includes a process control system 12 that integrates a safety system 14 (shown in phantom), which typically operates as a safety instrumented system (SIS) that monitors and overrides the control provided by the process control system 12 , used to maximize the possible safe operation of the process device 10 . The process plant 10 also includes one or more host workstations, computers or user interfaces 16 (which may be any type of personal computer, workstation, etc.) which may be accessed by plant members such as process control operators, maintenance personnel, configuration engineers, etc. Wait. Such as figure 1 As shown in the example, three user interfaces 16 are shown connected to two independent process control / safety control nodes 18 and 20 and configuration database 21 via a common communication line or bus 22 . The communication network 22 may be implemented using any desired bus-based or non-bus-based hardware, using...

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Abstract

A process plant includes a safety system that is physically and logically integrated with a process control system such that the safety system and the process control system can use common communication, diagnostic and display hardware and software within the process plant while still providing functional isolation between the safety system controllers and the process control system controllers. This integrated process control and safety system uses a common data communication structure for both the safety system and the process control system so that applications can send data to and receive data from devices in either system in the same manner, e.g., using the same communication hardware and software. However, the common data communication structure is set up to distinguish process control system devices from safety system devices using tags, addresses or other fields within the messages sent to or received from the devices, which enables data associated with the process control system to be distinguishable from data associated with the safety system, thereby enabling a diagnostic application within a user interface to automatically treat this data differently depending on the source (or destination) of the data.

Description

technical field [0001] The present invention relates generally to safety systems for process plants, and more particularly to safety systems embedded or integrated into process control systems of process plants. Background technique [0002] Process control systems, such as those used in chemical, petroleum, or other processes, typically include one or more process controllers communicatively connected to at least one host computer or operator workstation via an analog, digital, or hybrid analog / digital bus, and connection to one or more field devices. The field devices, which may be, for example, valves, valve positioners, switches and transmitters (eg, temperature, pressure, flow rate sensors), perform functions such as opening or closing valves and measuring process parameters in process devices. The process controller receives signals representing process measurements made by the field devices and / or other information related to the field devices, uses the information t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B9/03G05B23/02
CPCG05B23/027Y02P90/02G05B9/02G05B19/4184G05B23/02G06F13/10G05B19/02
Inventor 汤姆·阿尼威尔肯特·A·伯尔拉里·O·琼特加里·K·劳马蒂·J·刘易斯朱利安·K·奈多迈克尔·G·奥特
Owner FISHER-ROSEMOUNT SYST INC
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