Event detection device with fault monitoring capability

Details Event detection device with fault monitoring capability Event detection device with fault monitoring capability

G - Physics

08

B

G08B 29/02 (2006.01) G08B 13/16 (2006.01) G08B 29/04 (2006.01) G08B 29/18 (2006.01)

Patent

CA 2241088

An event detection device comprising a sensing means for generating an output signal in response to the detection of an event, the device comprising a fault monitoring system which comprises: comparator means for comparing the output signal with a threshold signal and for activating a timed sequence processor when the output signal exceeds the threshold signal on a first occasion, the time sequence processor being adapted to activate a fault indicating circuit after a predetermined time interval unless the sensing means generates an output signal in response to the detection of an event on a second occasion within the predetermined time interval.

Ce dispositif de détection d'événements comporte un dispositif de détection, destiné à générer un signal de sortie en réponse à la détection d'un événement, et comprend un système de surveillance d'incident qui comporte un comparateur destiné à comparer le signal de sortie avec un signal de seuil et à actionner un processeur séquenceur lorsque le signal de sortie dépasse le signal de seuil en une première occasion. Ledit processeur séquenceur est adapté pour actionner un circuit indicateur d'incident après un laps de temps prédéterminé, à moins que le dispositif de détection ne génère un signal de sortie en réponse à la détection d'un événement en une deuxième occasion pendant le laps de temps prédéterminé.

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