Operational Basics; Operational Principles; Operational Modes; Accelerometer - Teltonika FM5300 User Manual

5 OPERATIONAL BASICS

5.1 Operational principles

FM5300 module is designed to acquire records and send them to server. Records contain
GPS and I/O information. Module uses GPS receiver to acquire GPS data and is powered with 3
data acquire methods: time-based, distance-based and angle-based. Method's details are
described in Data Acquisition chapter 8. All data is stored in flash memory and later can be sent
via GPRS or SMS channels. GPRS mode is the most preferred data sending mode. SMS mode is
mostly used in areas without GPRS coverage or when GPRS usage is too expensive.
GPRS and SMS settings are described in chapters 6.3.1.2.1 and 6.3.1.2.3. FM5300
communicates with server using special data protocol. Data protocol is described in "FMXXXX
Protocols" document.
FM5300 can be managed by SMS commands (SMS Command list is described in SMS
Command List section) and GPRS commands (GPRS Command list is described in GPRS Command
List section). Module configuration can be performed over TCP or via SMS. Configuration
parameters and modes are described in "FMXXXX Protocols" document.

5.2 Operational Modes

FM5300 is designed to operate in two different modes: Normal Mode and Deep Sleep
Mode (Standby mode). Normal Mode means that FM5300 is fully functional and performs all the
functionality mentioned above in Operational principals section.
Deep Sleep Mode is designed to dramatically reduce power consumption. It is a separate
mode and certain conditions must be fulfilled to switch from Normal operation and enter this
mode. Detailed information about how FM5300 enters/exits Deep Sleep Mode and what
functions does FM5300 perform while in this mode can be found in chapter 9.

5.3 Accelerometer

FM5300 has a built in 3 axis accelerometer which allows the device to indicate if vehicle is
moving or not, as well as measure acceleration. Accelerometer sensitivity can be configured – it
has 2 configurable global parameters: start and stop timeouts that define time intervals in
seconds. To indicate that a vehicle is moving, FM5300 constantly (in frequency of 10 Hz) checks
for g force change on X, Y and Z axes. If measured g force keeps exceeding the set limit (it is not
configurable) for defined time interval in "Movement Filter Start" field (Figure 10), then the
vehicle is considered as moving. Same settings for idle indication apply – if g force change is less
than the set limit for time interval defined in "Movement Filter Stop" field then the vehicle is
considered as idle (not moving).
Example for default parameters: Movement Filter Start = 1 and Movement Filter Stop = 30
means that movement will be detected after 1 second and stop will be detected after 30 seconds
of inactivity.
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