| Description:
STAR and STAR-320 systems are designed to create alarm-broadcast,
dispatch and telephone communication in methane mines, coking,
chemical and petrochemical plants and others with high degree of
explosion hazard. These systems can be used in high noise, humidity
and dustiness level areas. Aforesaid systems combine telephone
functions in subscriber and dispatcher network (in cooperation with
telephone exchange) and special alarm-broadcast functions ensuring
loud-speaking simplex communication between dispatcher and ZITG or
ZITP signal phones. The systems also allow quick transmission
between the different information about appeared danger, between
workers and a dispatcher as well as dispatching conventional
evacuation signals and verbal messages. A basic version of the STAR
system with capacity of 16 to 160NN (optionally up to 192NN) can be
used in small mines. The STAR-320 version is designed to work in
large centralised mines requiring capacity of 320NN (optional up to
384NN) and also in the dispersed-structure mines in a distance,
which does not exceed transmission capabilities of used
telecommunication medium and transmission devices( HDSL modems and
copper wire - up to 5 km ,OLT modems and fibre-optical cable - up to
30 km). The STAR and STAR-320 perform the following functions:
establishing connections and making phone calls in automatic and
half-automatic modes of the integrated and intrinsically-safe
signalling phone ZITG (ZITP) subscribers using telephone exchange of
any type,- direct loud-speaking connection (simplex) of dispatcher
and subscribers in individual or group mode, - dispatcher netting
call in alarm mode by ZITG (ZITP) subscribers without necessity of
hook-on, - dispatcher netting call in normal mode by ZITG (ZITP)
subscribers without necessity of hook-on, - automatic connection
with telephone exchange or dispatcher in case of exceeding
established time of dialling a number, - broadcasting of alarm
messages,- listening from surroundings of ZITG (ZITP), - automatic
digital registration using SU-STAR maintenance stand and dispatcher
computer control desk PDK-STAR of alarm mode phone calls and normal
mode phone calls (on dispatcher request),- optical signaling of:
incoming call, message dispatch, evacuation signals broadcast and
dispatcher calling by ZITG (ZITP) subscribers,- automatic phone
calls with pulse modulation (PM) or dual tone multi-frequency DTMF
dialing, - phone calls in loud-speaking duplex mode,- system
initialisation, setting the priorities, archiving alarm calls and
emergency states at maintenance stand, report printing, Options
include up to 8 (16) phonecalls of ZITG (ZITP) subscribers through
the medium of dispatcher control desk PD-STAR-320 (PDK-STAR),-
operation with process visualisation system realised on dynamic
synoptic panels (large-format monitors or projectors), - creation of
(up to 64) freely programmable calling groups available at 8 levels,
- operation with local loud-speaking communication devices, -
bidirectional transmission of up to 256 bi-state signals along the
64 subscribers lines with use of signalling phones versions ZITG
(ZITP) with numbers started from T.
Innovative Aspects:
- use of PC computers and redundant industrial controllers
ensure high reliability of the system
- remote power supply of
all underground devices
- automatic monitoring of transmission
lines
Main Advantages:
- intrinsically-safe design of
underground devices allows to use them in methane mines and other
explosion hazardous zones,- capability to operate at the places of
high level of noise, humidity and dustiness, - integration of
telephone and dispatch communication, - dispatch communication
between branch houses of an industrial plant, |