Fault tolerant multipoint control and data collection system

G - Physics – 01 – D

Patent

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G01D 21/00 (2006.01) G06F 17/40 (2006.01) H04Q 9/14 (2006.01)

Patent

CA 2214852

A multipoint data collection system (Fig. 1) uses multiple parallel data buses (12) connecting a central controller (10) to addressable sensor interfaces (Fig. 4) to permit any sensor (14-16) to be connected to a central controller (10) over any one of the data buses (12). Both ends of each data bus (12) are connected to the central controller (10), allowing sensor interfaces (Fig. 4) to be addressed even if all data buses are cut. Faults on a data bus (12) and defective sensor interfaces (Fig. 4) may be bypassed through one or more bypass buses (406) that may be addressably switched into use as desired.

Cette invention concerne un système multipoint de collecte de données (Fig. 1) qui utilise de multiples bus de données parallèles (12) connectant un contrôleur central (10) à des interfaces de capteurs adressables (Fig. 4) afin que tout capteur (14-16) soit relié au contrôleur central (10) par l'intermédiaire de n'importe quel bus de données (12). Les deux extrémités de chacun des bus de données (12) sont connectées au contrôleur central (10), ce qui rend possible l'adressage des interfaces de capteurs (Fig. 4) même si tous les bus de données sont coupés. Il est possible de contourner les défaillances d'un bus de données (12) et les interfaces de capteurs défectueux (Fig. 4) en empruntant un ou plusieurs bus de dérivation (406) qui peuvent être activés par adressage lorsque cela est nécessaire.

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