Just a side information. On Andorid phones it can take 10 minutes to find the satelites if the time of the phone and the satelites is out of sync. And in that case the position can also be a few 100 meters off track. As soon as the times are in sync the GPS signal is immediately there and the position is correct. Regards Chris Am Freitag, den 12.02.2021, 12:24 +0100 schrieb sharkcow:
OK, in my case OVMS lost the GPS fix for one log entry, then apparently my car took a 400m dive! Strange theft approach... ;-)
Took about 10mins. for GPS to be back in the correct position.
So, would we want to implement a workaround? Maybe wait with the alert after fix is lost? But then again, if the car really is towed, I'd like to know asap...
Thanks,
sharkcow
Am 12.02.21 um 10:35 schrieb Michael Balzer:
Please check your "L" log at the time of the alert: what did your GPS data look like just before the alert?
There's the option of raising the alert threshold. It's 500 meters by default (config vehicle flatbed.alarmdistance). But we should first determine the cause of the false alerts.
Regards, Michael
Am 12.02.21 um 10:28 schrieb sharkcow:
I got the theft alert again last night, the car had been standing for several hours... so at least in my case I would think the alert trigger is too sensitive compared to the resolution/accuracy of the GPS measurement.
Best regards,
sharkcow
Am 09.02.21 um 18:40 schrieb Michael Balzer:
I found the reason for the false theft/flatbed alert in my case by checking my telemetry archive: the car lost GPS on the road. Coordinates were stale when I parked the car. The stale coordinates were taken as the initial park coordinates, causing an alert when the GPS receiver delivered the next valid data (the actual park position).
So the bad antenna placement actually was the cause in my case, but we can solve that in software.
I've just pushed a fix (untested) for this, consisting of a) making the location module aware of parking coordinate staleness and b) lowering the staleness thresholds for the GPS metrics to 10 seconds.
Please verify.
Regards, Michael
Am 09.02.21 um 10:29 schrieb Michael Balzer:
I had the alert once with my Mii, also shortly after parking. With the module being mounted with the GPS antenna placed under the hood, I assumed that to be the cause.
I doubt it, but I'll check if any of our changes could have had an impact on the GPS movement detection.
Regarding open changes to be included in 3.2.016: sharkcow is currently working on finishing the UpMiiGo TPMS feature, it's already been tested so we'll wait for that.
Regards, Michael
Am 09.02.21 um 09:57 schrieb sharkcow:
Hi all,
> Twice in the last few weeks I've gotten the "possible > theft/flatbed"
alert just as I was backing out of the garage. I have never received that alert before. I hadn't posted anything yet because I was waiting to drive the other car and see if has the same problem.
I get this too every once in a while with my e-Up. Mostly shortly after parking, I think (and tragically, the one time I'd have needed it because I actually _did_ get towed, I had crashed OVMS into a boot loop just before :-/).
sharkcow
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