6
5.1.1
The main system component is a bistatic microwave detector. Its principle of operation is
to generate a volumetric detection zone in the space between a transmitter (Tx) and a receiver (Rx).
5.1.2
Tx contains two radiators: upper and lower. In Rx there are two receivers of beaming:
upper and lower. The detection zone of the sector is formed by one beam between a radiator and a
receiver of beaming. Therewith,
the couple radiator-receiver of beaming of one sector must be either
upper or lower.
5.1.3
Each system Rx is marked with two figures (“1” and “2”, “3” and “4”…“19”and “20”),
one of these figures is referred to an upper receiver of beaming, the other – to a lower receiver of
beaming. According to these figures a number is given to a protective sector.
5.1.4
The upper Tx radiator and the upper Rx receiver of beaming can be turned around the
angle of azimuth about the lower ones within the 350
о
angle. It provides the creation of protective
boundaries of different configuration.
5.1.5
When an intruder enters a detections zone of any sector, Rx generates an alarm indicating
the number of this sector (according to an upper or lower receiver of beaming). An alarm is transmitted
to RC Rx over radio channel. RC Rx is a data acquisition and display device.
5.1.6
In addition to two alarms Rx can generate two functional reports: a Rx operability report
and a Rx SB discharge report.
5.1.7
RC Rx receives and indicates alarms with a sector number and functional reports with the
number of RX which generated it as well as it generates a generalized alarm (a sector number is not
indicated) and a combined functional report to an external DADS.
5.1.8
RC Rx indicates alarms by displaying “
№УЧАСТКА
” (i.e. the number of the sector where
an alarm is generated from 1 to 20) on the numeric display and by switching a tuneful audio signal.
Alarms are reset with “
СБРОС
” (reset) button.
Sector 20 is displayed by “0” figure.
Alarms are generated in 15-20 sec. until causes of alarms are eliminated.
To heighten reliability each alarm consists of two impulses. Their duration is about 2 sec. The
interval between them is 3-4 sec. If an alarm is received and “
СБРОС
” button (reset button) is pushed
before the second alarm impulse is over, a report is reset on the numeric display and repeats right now.
If several alarms are received at one time they are enqueued. After the previous report (alarm) is
reset, the following one is displayed automatically.
5.1.9
RC Rx displays functional reports only from those Rxs which are set to “Automatic control”
mode. Sectors are set to “Automatic control” mode in pairs relating to one Rx. They are set using 10
buttons “1-2”…”19-20”. Each button corresponds to a positional indicator lamp to indicate the state of
the sectors. The order of sector setting to “Automatic control” mode is given in Section 8.
5.1.10
If during 4 minutes there are not functional reports about operability from any Rx, RC Rx
generates “AC report” by switching a AC indicator and a corresponding positional indicator “1-2” – “19-
20”, and a audio signal. When displaying functional reports an audio signal differs from an alarm in tone.
