System Overview; Algorithm; Flame Detection Characteristics; Smoke Detection Characteristics - Bosch AVIOTEC IP starlight 8000 Operation And Commissioning Manual

AVIOTEC IP starlight 8000
3

System Overview

The video-based fire detection is the system of choice when reliable video motion and fire
detection is needed, e.g. applications which are not subjected to construction product
regulation or a supplementation to existing fire detection systems. AVIOTEC IP starlight 8000
operates as stand-alone unit and doesn't need a separate evaluation unit. Furthermore, it
contains all features of the Intelligent Video Analytics which allows analyzing and evaluating
moving objects in parallel. Video-based fire detection and Intelligent Video Analytics operate
independently from each other and are separately adjustable.
3.1

Algorithm

The intelligent smoke and flame algorithm analyzes video frames by means of characteristic
and predefined patterns and variables. The fast detection algorithm is based on a real-time
image processing on the camera firmware.
There are factors that can influence this kind of visual fire detection. It is important to avoid
obstructions in the field of view. Sometimes obstructions cannot be prevented, e.g. building
construction factors or huge machine parts. In this case it is necessary to analyze whether
there is any need for further video-based fire detection cameras.
3.1.1

Flame detection characteristics

Flames will be analyzed by means of their behavior. Flickering, brightness and constant
illumniated parts of white and orange are the basis colors for the algorithm to split off the
video image into important and unimportant areas. Further flame colors will not be
considered, for example a blue flame might not be detected.
Another algorithm characteristic to identify flames is the flickering of a flame. Objects with a
similar movement pattern might cause false alarms, e.g. loose fluttering objects. The video-
based fire detection offers subsequent adaption of flame detection settings for this purpose.
3.1.2

Smoke detection characteristics

Notice!
Different illumination levels can lead to different detection speeds. The poorer the ambient
illumination, the less the smoke stands out against the background. For this reason, poor
lighting < 7 lx may require a higher smoke density for reliable smoke detection.
Bosch Sicherheitssysteme GmbH Operation and Commissioning Manual
System Overview | en 13
2020.08 | 01 | F.01U.391.015