Process for construction of a safety controller and a...

Details Process for construction of a safety controller and a... Process for construction of a safety controller and a...

G - Physics

06

F

354/227

G06F 11/00 (2006.01) G06F 11/16 (2006.01) G06F 11/267 (2006.01)

Patent

CA 1186060

TITLE: Process for construction of a safety controller and a controller constructed in accordance with the process (invented by Rémy Fourré and Bruno de Langre) APPLICANT: SOCIETE D'ETUDES ET CONSEILS A E R O (Automation . Electronique . Recherche Opérationnelle) ABSTRACT A process designed for construction of logic and digital "safety" controllers comprising a system of error detection by comparison between two identical sub-controllers operating on the same input signals. The invention consists of a particular layout of the combinational devices and of the memory registers of each of the sub-controllers that provides exhaustive testing of the registers and of the truth tables of the combinational devices of each of the sub- controllers. Controllers constructed in accordance with this process can, particularly, be used in railway safety techniques. FIGURE 1

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