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GSM 900/1800 or GSM 850/900/1800/1900 mobile carrier network
is used as a medium for data transfer. To determine the coordinates,
NAVSTAR GPS system is used. To detect vehicle movement, the data
obtained from GPS or GPS/GLONASS and internal acceleration meter are
used.
The device must be installed in a spot unavailable to a driver.
Principle of Operation
In real time, the tracking device:
using an in-built GPS or GPS/GLONASS receiver, determines the
location and motion parameters of an object (time, geographical
coordinates, speed, direction of travel);
collects and processes information coming from analog and
discrete sensors;
controls actuators upon the command from the operator panel.
The data obtained are recorded and stored in the internal log that
is based on a non-volatile memory chip. Records from this log are
transferred to the operator panel through a GSM channel with a
predetermined frequency or on an event basis. Information exchange is
done via GPRS and SMS. Voice communication is also supported.
On-line terminal operation is only possible provided there is GSM
coverage. Beyond the GSM network coverage area, the tracking device is
in the mode of a "black box", i.e. it records all logged information to the
non-volatile memory and transfers it when a vehicles enters into a GSM
coverage area.
Specifications
Table 1. Device Specifications
No.
Item
Specifications
1
Data transfer standard
GSM 900/1800 or GSM
850/900/1800/1900
2
GSM network communication channel
GPRS, SMS, voice
communication
3
GPRS grade
10
4
Navigation system types
GPS or GPS/GLONASS
5
GPS and GSM antennas
External
6
Auxiliary digital interfaces
RS-485
7
Motion sensor
Acceleration meter
