|OSID offers many advantages over traditional beam and spot detectors|
Large, open spaces – airports, train stations, stadiums and shopping malls – pose unique challenges to reliable fire detection due to their environmental nature and limitations. The limitations of traditional smoke detection technologies include:
Open-area Smoke Imaging Detection (OSID) by Xtralis is a new technology designed to overcome these common fire detection achieved by using a low-cost laser alignment tool to rotate the eye-ball until the laser beam from the alignment tool is within proximity to the Imager. No further alignment is required, resulting in extremely fast installation and set-up, which is a major benefit in large open space applications where access for installation is often limited or restricted.
The imaging chip also allows for the deployment of up to seven Emitters per Imager. These Emitters can be placed on different floors, providing detection at multiple levels of the facility, giving the fire engineer flexibility in providing extra protection at lower levels. Only the Imager has to be wired versus every receiver as is the case with traditional beam detectors.
OSID offers many advantages over traditional beam and spot detectors, the primary one being the use of dual light frequencies. Ultraviolet (UV) and infrared(IR) wave lengths assist in the identification of real smoke compared to larger objects such as insects and dust, thus reducing false alarms. By using two wavelengths of light to detect particles, the system is able to distinguish between particle sizes. The shorter UV wavelength interacts strongly with both small and large particles while the longer IR wave length is affected only by larger particles.
Dual wave length path loss measurements therefore enable the detector to provide repeatable smoke obscuration measurements, while rejecting the presence of dust particles or solid intruding objects. Systems that use single beams cannot discriminate between particle sizes and are prone to nuisance Furthermore, OSID is equipped with a CMOS imaging chip with many pixels rather than a single photo-diode, providing the OSID detector with a wide viewing angle to locate and track Emitters. This concept ensures easy alignment at installation, as well as excellent tolerance to building movement and vibration, without the use of moving parts. Optical filtering, high-speed image acquisition and intelligent software algorithms also enable the OSID system to provide new levels of stability and sensitivity with greater immunity to high level lighting variability.
OTHER BENEFITS OF OSID INCLUDE
In summary, the benefits of OSID are: