Arrangement for controlling and testing a notification...

Details Arrangement for controlling and testing a notification... Arrangement for controlling and testing a notification...

G - Physics

08

B

G08B 29/12 (2006.01)

Patent

CA 2714482

An arrangement for use in a safety notification system includes a source of negative voltage, a first resistor arrangement, and a circuit arrangement. The first resistor arrangement is coupled between the source of negative voltage and the signal output of the safety notification system. The circuit arrangement is configured to detect a first voltage at the signal output of the safety notification system, and to generate a trouble signal output if the first voltage at the signal output is above a first threshold or below a second threshold.

L'invention concerne un dispositif à utiliser dans un système de notification de sécurité, qui comporte une source de tension négative, un premier dispositif de résistance, et un dispositif de circuit. Le premier dispositif de résistance est couplé entre la source de tension négative et la sortie de signal du système de notification de sécurité. Le dispositif de circuit est configuré de façon à détecter une première tension à la sortie de signal du système de notification de sécurité, et à générer une sortie de signal de défaillance dans le cas où la première tension à la sortie de signal est supérieure à un premier seuil ou inférieure à un second seuil.

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