Osmand/Tablet Samsung reports speed as 0 for majority of the time

Sandreli3 months ago

Hi,

I am sorry if this question was put before but could not find it.

I have a traccar server used for both Teltonika devices and tablets with Traccar Client.

The issue is that the tablets with Traccar Client do not report always the speed. Looking at a bus driving and maybe just 10% of the cases have speed >0, even if the rest (distance, altitude, totaldistance) are populated.
This pretty much affects the trips/stops identification.

The devices are set to high accuracy.

DB events for one tablet

  1. Is there a way to fix this on the devices (Samsung Active tablets) or should I just use computed attributes ?
  2. If computed attributes are the way to go, should i change the motion to true if distance greater then a specific value. I guess computed value for speed will not impact motion afterwards.

Thanks in advance for any help

Anton Tananaev3 months ago

Zero speed usually indicates that the position is not a GPS, but cell/wifi based. Check the accuracy value to confirm. You can enable filtering by accuracy if you want to filter out those data points.

Sandreli3 months ago

I also think the issue might be that is not GPS as it does not have course aswell. however the accuracy on some of these values is sometimes lower then the values that have speed so i cannot filter on the accuracy

Accuracy

I am trying with computed attribute for motion to solve this. The lack of speed is not a major deal. the impact on trips and stops is.