Systems and methods for implementing a dynamic cache in a...

G - Physics – 05 – B

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G05B 19/418 (2006.01) G05B 15/02 (2006.01) G06F 15/177 (2006.01)

Patent

CA 2297001

The present invention provides systems and methods for controlling processes of a process facility and, in particular, for distributing data among nodes of a real time process control system controlling such a fa-cility. An exemplary process control system includes a plurality of sensors, control-lable devices, and communication paths, and a computer system. The sensors and con-trollable devices are associated with various ones of the processes of the process facil-ity, and the communication paths couple the sensors and controllable devices to the com-puter system. The computer system oper-ates on data related to the process facility, and distributes the data among both client and process nodes. The client nodes de-sire data associated with processes of the facility and the process nodes control such process data. The computer system includes (i) a cache having a short access time for re-trieving records, and (ii) a supervisory controller, associated with the client and process nodes, that controls storage of the process data in the cache and selectively transfers the process data from the cache to the client nodes.

La présente invention concerne des systèmes et des procédés permettant de gérer un dispositif de traitement, et en particulier de répartir des données entre les noeuds d'un système de gestion industrielle en temps réel, commandant un tel dispositif. Un système de gestion industrielle comprend généralement des capteurs, des dispositifs pouvant être commandés, des voies de communication, et un système informatique. Les capteurs et dispositifs pouvant être commandés sont associés à divers processus du dispositif de traitement, les voies de communication permettant de coupler ces capteurs et dispositifs audit système informatique. Ce dernier fonctionne sur la base de données liées au dispositif de traitement, et répartit ces données entre des noeuds clients et des noeuds traitement. Les noeuds clients demandent des données liées aux processus du dispositif, les noeuds traitement gérant ces données. Le système informatique comprend: i) une antémémoire dont le temps d'accès est réduit, afin de consulter des documents, et ii) un ordinateur-interpolateur, associé audits noeuds client et noeuds traitement, cet ordinateur-interpolateur gérant le stockage des données liées au dispositif de traitement dans l'antémémoire et transférant de manière sélective ces données de l'antémémoire aux noeuds client.

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