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5
OPERATIONAL BASICS
5.1
Operational principals
FM3200 module is designed to acquire records and send them to the server. Records contain
GPS and I/O information. Module uses GPS receiver to acquire GPS data and is powered with three
data acquire methods: time-based, distance-based and angle-based method. Method's details are
described in GPS section. All data is stored in flash memory and later can be sent via GPRS or SMS
channels. GPRS mode is most preferred data sending mode. SMS mode is mostly used in areas
without GPRS coverage or GPRS usage is too expensive.
GPRS and SMS settings are described in GPRS section. FM3200 communicates with server
using special data protocol. Data protocol is described in "FM4100 FM2100 and FM2200 Protocols"
document.
FM3200 can be managed by SMS commands. SMS Command list is described in SMS
COMMAND LIST
section.
Configuration parameters and modes are described in "FM4100 FM2100 and FM2200 Protocols"
document.
5.2
Sleep mode
FM3200 can enter sleep mode (standby mode) under two conditions:
• FM3200 does not detect movement.
•
FM3200 does not send or receive any data for 5 minutes. This means that if coordinate
recording interval is less than 5 minutes, FM3200 will never go to sleep mode.
FM3200 exits sleep mode when it detects movement again.
While in sleep mode, FM3200 sets GPS receiver to sleep mode, therefore it does not record or
send any data. The power usage also decreases saving vehicle's battery.
5.3
Virtual odometer
Virtual odometer is used to calculate traveled distance in FM3200 as a separate I/O element.
When FM3200 detects movement, it starts counting distance using GPS signal: every second it checks
current location and calculates distance between current and previous point. It keeps adding these
intervals until it is time to make a record, then FM3200 records its location and adds odometer value,
which is equal to the sum of all distances, measured every second. When record is made, odometer
resets to zero and distance calculation starts all over again. Note, that FM3200 does not measure
distance between coordinates, that it records using time, distance or angle change intervals. Instead, it
uses virtual points, which are established every second, and calculates distance between them.
Module configuration can be performed over TCP or via SMS.
18
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