Crash Trace Operation; Autogeofencing Settings - Teltonika FMB001 User Manual

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5.9.5 Crash Trace operation

If trace is enabled FMB will collect acceleration data every 40 msec. Buffer is big enough to

hold data for 5 seconds and on Crash Event detection, records will be generated from this buffer,

following these conditions:

• Every second

• Acceleration changed more then > 50mG

Data will be collected and records generated 5 seconds after the event using the same

conditions.

Every generated record will have accelerometer X Y Z values included. Each record will

have accurate timestamps in milliseconds (for detailed crash trace record structure refer to

FMB001 protocol document).

Usually between 20 to 30 records is generated on crash event detection.

AutoGeofence – the last known position after movement = off. If your car's being

taken away – you can be notified. The shape and size of the geofence zones are

parameters. It is possibility to state whether entering in or out of the geofence triggers an

asynchronous message.

Figure 10 Example of Crash Trace logic

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