The development of the optimal structure and design of the automated video monitoring system of fires

1. AN AUTOMATIC SCANNING SYSTEM FOR THE
MONITORING OF FIRES
Andrii Sofiienko
PhD, Chief Physicist,
Head of research laboratory
2011
Ukratominstruments Corporation

2. TASKS:
The development of the optimal structure
and design of the automated video
monitoring system of fires (VMSF);
Contract from 21.11.08 № 21-4/22, with the MOE of Ukraine "Creating a video monitoring
system of fires in the Chernobyl exclusion zone."
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3. BASIC REQUIREMENTS FOR A MODERN MONITORING SYSTEM:
 Auto scan mode of the area of interest;
 Wide temperature range: -15 0C to +50 0C;
 Detection time of the source of fire :  30 s;
 Detection distance of the source of fire with a volume
of 3 m3: 15 km;
 Transfer all data via radio channel;
 Independent power source for 24 hours;
 Multisensory system for scanning and detection of
the source of fire.
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4. MULTISENSORY SYSTEM TO SCAN AND DETECT THE SOURCE OF FIRE
Current developments in infrared spectroscopy (applied for the
wavelength range 2.5 - 5 microns, which corresponds to the
temperature of the burning of wood) can significantly complement the
existing video monitoring systems of fires, so we can talk about the
new direction in the monitoring – a multisensory control system, which
is based on the analysis of objects in multiple spectral ranges.
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CCD camera (0.3 - 1 micron) IR telescope (2.5 - 5 microns)

5. THE STRUCTURE OF THE MEASURING UNIT
The measuring module is an
automated device for finding and
identification of the sources of fires
with the ability to send the photos of
the detected fires via radio channel.
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6. FEATURES OF INFRARED TELESCOPE
IR receiver is based on a lead-selenium resistor
with a maximum sensitivity in the medium infrared
range. The most effective spectral range of the
infrared radiation to determine the source of fire
(the average temperature is 800 0C) is 2.8-5.2
m.
The telescope is equipped with a Cassegrain
optical system and performs a spatial selection
of heat sources in the medium infrared range 2.8-
5.2 m. The angular field of IR channel response
is 7 angular minutes.
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7. THE MECHANICAL SCANNER
Mechanical scanning device rotates the
telescope in azimuthal plane from 00 to
3600 and produces an offset angle of 7
angular minutes. Full scan cycle ends
when the angle on 70 below the
horizon. The scanner is installed on the
tower at a height of 30-40 m. that
allows to control the territory around by
a spiral from the horizon.
The rate of the azimuthal scan - one
turnover in 10 seconds. The full scan
time is about 5-6 min. 7

8. DIRECTION FINDING OF THE FIRE
For accurate direction of
the source of fire it is
necessary to use the data
from at least of three
scanning modules.
Preliminary coordinates of
the fire can be obtained
using the two modules.
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9. THE MAIN TECHNICAL CHARACTERISTICS
Parameters Value
Number of scanning modules in the system up to 128
The spectral range of IR channel 2.8 – 5.2 m
The spectral range of the video channel (2 Mpix) 0.3 – 1.0 m
Min. temperature resolution of IR channel 0.5 0С
Detection range of the source of fire, V = 3 m3 15 km
Confirmation time of the fire detection 30 s.
The area controlled by one module up to 700 km2
Time transmission of digital images 1 min.
Ability to connect external sensors up to 128
Energy consumption 90 W
Environmental temperature from -15 to +50 0C
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Contact information:
“Ukrainian atom instruments and systems” Corporation
Director General : Petrenko Valeriy Stepanovich
03150, Ukraine, Kiev, Gorkogo str., 152, office 224
Tel/fax: +38 044 5016178
E-mail: info@uap.kiev.ua