Picotrack 4G User Manual V1.2
Seite 15
Basic Features
The device can be configured either via serial cable by using the Telic Configuration tool or
remotely via SMS and GPRS. Please contact the Telic support team to receive more details about
the configuration procedure.
Event Types
The Picotrack’s primary task is to transmit GPS positioning data as well as additional status
information via a TCP/IP connection to the tracking server. If a message can’t be transmitted, it
will be stored in the device for transmission at a later point in time. There is a storage capacity of
about 1.000 position messages. The following events will generate a positioning message which
always contains the GPS position:
Time event:
the end of a time period of x seconds (x being configurable).
Distance Event:
after a distance of x meters (straight line distance to the previous event) in any
direction (x being configurable) has been travelled.
Angular change Event:
a direction change of a configurable minimum angle in x degrees (x
being configured) at a configurable minimum speed of y km/h (y being configurable).
Periodic Wakeup / Routine Message
: even when the unit is in stand-by mode, the message is
generated either every x hours (x being configurable) or at a fixed time (configurable) during the
day
Power event
: Switching on or off the device.
Connection Establishment Procedure
The GSM and GPS modules will power up after switching on the Picotrack device. After logging in
into the GSM network the Picotrack will attempt to establish a GPRS communication link. Finally,
a TCP/IP connection to the tracking server will be established to transmit the event messages.
The selection of the GSM network operator will take about 1 minute, plus the time to build up the
GPRS- and TCP/IP-connections to the tracking server. Therefore, after switching on the device, it
will take approximately 2-3 minutes until the first status message can be transmitted.
Independent of this procedure, GPS positions and status information will be generated and
stored in the internal memory for later transmission. Here follows the message structure:
