Functional Description
Technical Handbook, AutroGuard Multicriteria Protector Series V-430, V-530, V-100, V110 and V-120,
AutroGuard-Technical-Handbook, Doc-1004339, Revision 1, 2020-06-29,
Autronica Fire and Security
Page 30
5.3 DYFI
3D
5.3.1 DYFI
3D
- Particle/Smoke Signature Analysis
The chamber has a multi angle/multi wavelength design (see
illustration in the previous chapter), where the angles and
wavelengths are used to separate between small and larger particles.
Two different wavelengths and two different angles provides a total
of three unique signals.
The optical detector uses the wavelengths and angles to measure the
different particles. Unique signatures are plotted in a three
dimensional space.
Each type of fire and nuisance source has its own unique signature
which is shown in the three dimensional space given by the ratios (in
this example black smoke from a flaming fire and smoke from
smouldering fires).
In this way, the optical detector can easily discriminate between
different types of fires, black and white smoke, steam and other
nuisance alarm sources.
Black smoke
flaming fires
Smouldering fires
