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GV300 @Track Air Interface Protocol

3.2.17. Harsh Behavior Monitoring

The command AT+GTHBM is used to monitor the harsh behavior of drive with GPS. Two harsh

behaviors are monitored, the harsh braking and the harsh acceleration. According the speed read

from GPS, 3 levels of speed are defined including high speed, medium speed and low speed. For

each speed level, 2 thresholds of speed change are defined to determine the harsh braking and

harsh acceleration. If the change of speed within 5 seconds are greater than the corresponding

threshold, the device will report +RESP:GTHBM message to the backend server to indicate the

harsh behavior. The same harsh behavior within 30 seconds only reports once. For this function to

work, the <GPS on Need> in AT+GTCFG must set to 0.

¾ AT+GTHBM=

Example:

AT+GTHBM=gv300,1,,,100,21,6,,60,21,6,,,21,15,,1,1,8,3,,,,,0010$

Parameter Length(byte) Range/Format Default

Password 4 – 6 '0' – '9' 'a' – 'z' 'A' – 'Z' gv300

Enable 1 0|1 0

Reserved 0

High Speed <=3 100 – 400km/h 100

∆Vhb <=3 0 – 100km/h 0

∆Vha <=3 0 – 100km/h 0

Reserved 0

Medium Speed <=3 60 – 100km/h 60

∆Vmb <=3 0 – 100km/h 0

∆Vma <=3 0 – 100/km/h 0

Reserved 0

∆Vlb <=3 0 – 100/km/h 0

∆Vla <=3 0 – 100/km/h 0

Reserved 0

Output ID 1 0 – 3 0

Output Status 1 0|1 0

Duration <=3 0 – 255(×100ms) 0

TRACGV300AN002 – 47 –

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Queclink GL200 Spezifikationen Seite 48