[Ovmsdev] GPS theft alert

[Alexander K]

I also had theft alerts in the past. The reason  - gps stop
updating location in the middle of the trip. I don't think it happens due
to a bad signal.

Regards,
Alexander

пт, 12 февр. 2021 г. в 11:29, sharkcow <sharkcow at gmx.de>:

> 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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> >> OvmsDev at lists.openvehicles.com
> >> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
> >
> > --
> > Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
> > Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
> >
> >
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> > http://lists.openvehicles.com/mailman/listinfo/ovmsdev
> >
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