Crash Detection - Teltonika FMB1YX User Manual

Event Timeout" time, then event is generated. If configured - sends sms event or makes a call.
Function will be reactivated after FMB1YX again detects change of Ignition state from ON to OFF.
Activation timeout – Activation timeout is time
after which FMB1YX turns ON Towing detection function
if other requirement is met (Ignition OFF state
detected). It is measured in minutes.
Event timeout – defines time period (in seconds)
to check ignition state when Acceleration or Angle value
reach. If towing event is generated during this time
period, it is
skipped. It allows filtering out redundant towing events
while entering the car.
Make Call to – if function enabled makes call to
specified phone number (configured in predefined
numbers).
Threshold and Angle – values used to detect
towing when ignition is OFF.
Duration – defines time period to check
Acceleration and Angle values.

5.10.4 Crash Detection

Crash Detection functionality can be set according to these settings:
1. Threshold (mg)
2. Duration (ms)
If accident happens and FMB1YX detects acceleration value higher than set threshold value
during set time period, then device will generate an event. Threshold and duration values are set
depending of accident power which you want to detect. FMB1YX can detect a slight tapping on the
device (Threshold=100mg, Duration=1ms) or can detect severe accident (Threshold=4000mg,
Duration=5ms).
Crash Trace operation:
If trace is enabled FMB will collect acceleration data every 40 msec., аnd in the deep-sleep
mode too. 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:
1. Every second Acceleration changed more then > 50mG.
2. Data will be collected and records generated 5 seconds after the event using the same
conditions.
3. Every generated record will have accelerometer x y z values included.
4. Each record will have accurate timestamps in milliseconds.
Usually between 20 to 30 records is generated on crash event detection.
Figure 31 Towing detection configuration
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