Combined fire alarming and firefighting device for rail vehicle, has evaluating device for evaluating smoke level of smoke detector and designed such that validating times for fire alarming and firefighting are separately determined

摘要

The device has an evaluating device for evaluating a smoke level of a smoke detector and triggering fire alarm when the smoke level permanently exceeds a threshold (S) over a validating time (t1) for fire alarming. The evaluating device is designed such that the validating time for fire alarming and a validating time (t2) for firefighting are separately determined. The exceedance of the threshold does not trigger firefighting only during the validating time for fire alarming, where the validating time for fire alarming is set shorter than the validating time for firefighting.