| Session: | Controls |
| Chairman: | Mats Wilhelmsson |
| Secretary: | Pierre Ninin |
| Duration of session : | 110 min (presentations 55 min., discussions 55 min.) |
| Trends in Industrial Control Systems in ST Division and at CERN |
| Abstract
Since the 1970s, industrial systems have been introduced in ST Division and have formed the basis for the overwhelming majority of the equipment for which it is responsible. The first systems were independent and not integrated into the accelerator control networks. This first generation included the Technical Control Room (TCR) site and networks monitoring system supplied by Télémécanique. In 1980, this system was replaced by the BBC and the Landis & Gyr systems for the cooling and ventilation equipment. In 1979, the Sprecher & Schuh system for the control of the electrical generator sets (with CERN’s first PLC) was installed. Since the 1980s, these systems have been gradually integrated, initially using G64s as the interface with the PLCs, then, with the introduction of FactoryLink to handle H1 communications based on TCP/IP and, finally, with the Technical Data Server (TDS) and the TCP/IP communication replacing H1. |
| Automates Programmables et Réseaux de Terrain - Conception des Systèmes de Régulation |
| Abstract
Depuis le milieu des années 80, la division ST, plus particulièrement le groupe CV, intègre des automates programmables industriels pour le contrôle des différents processus. A l'origine, l'API suppléait un système de gestion conventionnel établi autour d'une architecture relais et logique électronique. L'API, au delà du simple fait qu'il reste une machine séquentielle, se place également comme un calculateur de processus grâce aux énormes progrès quant à la structure de base, la qualité et la diversité des outils proposés. Son intégration sur Fieldbus (Profibus Wordlfip), sur Ethernet, permet une interaction directe entre les applications. Les processus industriels liés au fonctionnement de l'accélérateur demandent une grande précision ainsi qu'une bonne stabilité. Le pilotage d'un processus fait appel à beaucoup d'éléments, mais il faut toujours un programme pour transformer le tout en un ensemble opérationnel répondant parfaitement aux besoins définis au cours de l'étude et de l'analyse du processus . |
| The Technical Supervision Interface |
| Abstract
The TCR equipment supervision tool, UMMI, is approaching its age of retirement and should be replaced before the start-up of the LHC. The Technical control room is currently using 30 different applications for the remote supervision of the technical infrastructure at CERN. These applications have all been developed with the CERN made "Uniform Man Machine Interface" tools built in 1990. However, the UMMI tool has run into a number of problems; the visualization technology has evolved phenomenally since 1990, the TDS has radically changed the architecture of our control system, the standardization and the maintenance of the applications have become important issues as their number increases. The Technical Supervision Interface (TSI) is intended to replace the UMMI and solve the above problems. Using a standard WWW-browser for the display, it will be inherently multi-platform and hence available for control room operators, equipment specialists and on-call personnel alike. |
| Système de Contrôle des Chargeurs de Batteries des Chariots Electriques de l’Anneau SPS |
| Abstract
Notre section ST/HM/PR assure le suivi et la maintenance de 2746 appareils de levage et de manutention répartis en 22 familles. De plus, notre section assure l'achat, l'installation et la mise en service des nouveaux équipements. Depuis novembre 96 nous avons installé un système de contrôle des chargeurs de batteries, pour les chariots RTL circulant dans l'anneau du SPS. Ce système nous permet, depuis un ordinateur installé dans nos bureaux, de visualiser les statuts des 45 chargeurs répartis sur les différents points du SPS, de vérifier la courbe de charge de chaque batterie, de déclencher le remplissage en eau et de démarrer le brassage électrolytique. Nous avons la possibilité de programmer les périodes de non enclenchement de nos chargeurs. Le système enregistre le temps d'utilisation d'un chariot, et nous indique la localisation et le numéro de chaque chariot. |
| Guest Speaker /Topic |
B. Denis SL/CO
|
| Control Systems Outsourcing Perspectives |
| Abstract
During the last years, the SL division has gained some experience with the outsourcing of control systems. Among other motivations, this approach was seen as a way to achieve better quality in terms of documentation, delivery time and conformance to specification. At the same time, in-house projects and projects involving collaborations with other institutes have adopted a similar approach to quality. These projects provide a good basis for a meaningful comparison between in-house and out-house developments. This presentation is aimed at identifying the relative risks and advantages of the approaches. The suitability of the outsourcing approach will be assessed against the nature of the project: the part of innovation, the level of the dependability requirements and the extent to which the system is CERN specific. The important aspect of maintenance will also be addressed. Doing so, the presentation identifies the key issues one has to consider before adopting the outsourcing solution. |
| Discussion |
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