AVIOTEC IP starlight 8000
Introduction | en
9
Bosch Sicherheitssysteme GmbH
Operation and Commissioning Manual
2020.08 | 01 | F.01U.391.015
Illumination is an important influencing factor for sensible optical systems. Natural light shows
the huge range of illumination values from direct sunlight (~100.000 lx) to full moon on a clear
night (~1.0 lx). A luxmeter can be used to measure the light levels.
The following table provides an overview of typical illumination values in different application
areas:
Application Area
Illumination (in lx)
Storage facility
50
Process plants
200
Sales room
300
Office space
500
In general a uniformly illuminated monitoring area is advantageous for the video-based fire
detection. Backlight should be avoided.
Dynamic range
The dynamic range is the ratio between the darkest spot compared to the lightest spot in the
application. Use a luxmeter to determine the brightness in your application. The dynamic
range in the camera image / the detection area must be equal or less than factor 5.
2.4.2
Focal length
The focal length of an optical system defines the distance between a light refracting lens and
the focal point. Field of view, maximum distance and field angle are dependant as shown in
the graphic below.
The maximum width of the field of view may be realized by the minimum focal length. This
adversely affects the maximum distance to a detectable fire (red).
Содержание AVIOTEC IPSTARLIGHT 8000
Страница 1: ...AVIOTEC IP starlight 8000 FCS 8000 VFD B Firmware 7 7x en Operation and Commissioning Manual ...
Страница 2: ......
Страница 69: ......