Siemens OOH740-A9-Ex - Features of Fire Detection Functionality

Structure and function
3
Setup
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Building Technologies A6V10367521_h_en_--
Fire Safety 2015-02-02
3.1.2 Features of fire detection functionality
The point detector OOH740-A9-Ex has the following features in terms of its fire
detection functions:
l Dynamic influence on the parameter sets
l Pattern recognition
l Real time interpretation of the situation
l Process- and time-controlled switchover of the parameter sets
Signal processing is based on ASAtechnology (ASA = Advanced Signal Analysis).
ASAtechnology can also be characterized as second generation algorithms. Signal
processing with ASAtechnology allows for optimum adaptation of detector behavior
to the corresponding ambient conditions.
Operating mode: Signal processing with ASAtechnology
The figure below shows signal processing in the form of a diagram:
C
Dynamic influence
of parameter
Environment
Evaluation of the
situation
Danger
level
Result
Algorithms
Signal analysisSensory
Signal processing with ASAtechnology
Sensory
The signals captured by the sensory are transmitted to the algorithm. The
algorithms are set by selecting the parameter set.
Algorithms
In comparison to the detection algorithms (DA), the individual parameters of the
selected parameter set can be adapted with ASAtechnology. A real time
interpretation of the situation leads to a dynamic influence on the algorithm. The
real time interpretation results in a broadening of the application range of the
parameter set and thus of the detector. The detector reacts more sensitively in the
event of fire, and more robustly in the event of deceptive phenomena.