Neomatica LLC. Vehicle tracker ADM333BLE GLONASS/GPS. Ver. 1.2 dd 13.07.2019
6
⎯
the straight-ahead travel is performed at a distance, which is longer than the pre-set
one;
⎯
the pre-set acceleration limit is broken;
⎯
the time for putting the point while traveling (parking) is expired;
⎯
device status change (description is given in
Appendix
А. Description of the bits of
the field
«STATUS»
);
⎯
an event occurs at analogue input.
In this way, route points might be saved with the time interval from one second to several
minutes allowing for a quality routing, recording any changes without a surfeit of information saved
in the “black box” and increase in GPRS traffic.
After connection to the power supply, the tracker starts receiving data from GLONASS and/or
GPS satellites, locating itself, identifying time, speed, travel direction, and in case of GSM network
availability establishes connection with the server. After connection to the server, the tracker
transmits the data packets with the pre-set frequency or when an event occurs. If for any reason the
connection to the server fails, all the information will be saved in the tracker non-volatile memory
and transmitted as soon as the connection is restored.
If there is no signal from GLONASS and/or GPS satellites and there is GPRS connection the
time is synchronized via NTP protocol with one of the available public servers. The points will be
recorded without data about location.
Data transmitted by the tracker
:
⎯
GMT date and time;
⎯
coordinates (latitude, longitude, altitude);
⎯
speed, acceleration and travel direction;
⎯
number of satellites when fixing a navigation problem;
⎯
precision loss factor in a horizontal plane;
⎯
voltage values at analogue inputs
⎯
data about events occurred;
⎯
device status;
⎯
data from the sensors connected via radio channel Bluetooth Low Energy
2 Technical specifications
⎯
GLONASS/GPS receiver:
chipset:
МТ3333 (MediaTek);
frequency bands: GLONASS
– L1 (СT-code), GPS - L1 (С/А code);
