Teltonika FMB001 User Manual page 37

• second vector was not saved yet;
• vehicle driving in the same direction with 5⁰ tolerance;
• vehicle speed increase by 7km/h within 1 second.
For next vector. Second vector will be taken if all conditions match. Immediately after
second vector is received, it will be multiplied by first (ground) vector, the result of these
vectors is vector multiplication cross product which is the right side of a car. By using
same vector multiplication method, device front, left side will be calculated. At this point
calibration is successfully ended as indication device sends an SMS/GPRS message with
"Device is calibrated, to recalibrate send:auto_calibrate:set".
Note: SMS/GPRS message will be sent only if auto calibration functionality was triggered by
SMS/GPRS message.
For user convenience in case auto calibration functionality fails then notification message
will be sent. For exact messages, check algorithm section.
Note: SMS/GPRS message will be sent only if auto calibration functionality was triggered by
SMS/GPRS message.
To get current calibration status "auto_calibrate:get" SMS/GPRS command must be sent to
the device. If device is calibrated it will respond with "Calibration state: calibrated" or otherwise
"Calibration state: not calibrated". Also this command returns saved Ground and Side vectors.
After every TRIP START event, device starts shadow calibration. This type of calibration is
running in parallel with already saved vectors (this means that vectors does not reset until
shadow calibration have both new vectors). After shadow calibration is done, device updates the
vector values to the new ones. There are two conditions when shadow calibration does not run
at TRIP start event:
• Normal calibration is still running.
• Shadow calibration is still running from previous TRIP event.
To take ground vector these conditions should be met:
• Ignition is ON
• Device got GPS FIX
• Vehicle speed = 0km/h
Device will check these conditions every 1sec until they will pass.
To take side vector these conditions should be met:
• Vehicle speed >= 20km/h
• Device got GPS FIX
• Ignition is ON
• Device angle does not change more than 5 degrees in past 1 sec
• Speed need to increase by 7km/h in 1s period.
Device will check these conditions every 1 sec until they will pass.
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