[Ovmsdev] 12V battery alerts

Tue Nov 12 23:07:49 HKT 2013

When setting Notifications (parameter #3) to "IP" or "SMSIP" I finally
receive alerts - including Minimum SOC (feature #9) ;)

The 12V Critical Alert triggers quite often, even if my 12V-battery is new
and in top condition.
I've measured that the car_12vline reports ~0,5V less than the real battery
voltage, so I plan to change the file net.c (line 1458) from:

*    // Trigger 12V alert if voltage <= ref - 1.5 V:    if
(!(can_minSOCnotified & CAN_MINSOC_ALERT_12V)            && (car_12vline <=
(car_12vline_ref - 15)))    {      can_minSOCnotified |=
CAN_MINSOC_ALERT_12V;      net_req_notification(NET_NOTIFY_12VLOW);    }*

to:

    // Trigger 12V alert if voltage <= ref - 1.5 V:
    if (!(can_minSOCnotified & CAN_MINSOC_ALERT_12V)
            && (car_12vline <= (car_12vline_ref - *20*)))
    {
      can_minSOCnotified |= CAN_MINSOC_ALERT_12V;
      net_req_notification(NET_NOTIFY_12VLOW);
    }

and compile it to a local hex-build and test in on my Think City.
Keep you posted about the result.

Best regards.
Håkon

2013/10/30 Mark Webb-Johnson <mark at webb-johnson.net>

>
> Can someone try it at 2.0V (rather than 1.5V) and see if it solves the
> false-alerts problem?
>
> Regards, Mark.
>
> On 29 Oct, 2013, at 5:10 pm, Rolf Welde Skeie <rwskeie at gmail.com> wrote:
>
> > Ok, it seems like a few have similar issues.
> > The logic behind the calculations seems to be reasonable, it is the
> assumption that there is a 1.5V difference between charging/non-charging
> state which is not generally applicable.
> > From my observations it seems like increasing this to 2.0V would take
> care of most mis-firing events.?..
> >
> > Disclaimer: I'm not an expert on batteries...
> >
> > Running on 2.5.5 experimental/TC
> >
> > Rolf
> >
> > On 10/29/2013 10:00 AM, Matt Beard OVMS wrote:
> >> Yup, I also get this message and it would be great if it were working
> >> properly, but it actually fires at 13.1V which is far too high.
> >>
> >> Matt
> >>
> >>
> >>
> >> On 29 October 2013 08:46, Rolf Welde Skeie <rwskeie at gmail.com
> >> <mailto:rwskeie at gmail.com>> wrote:
> >>
> >>    I have the following features set:
> >>    #0=1, #8=1, #9=1, #15=1, all others =0.
> >>
> >>    Can't remember which one made it work, but one of them did, my guess
> >>    would be #9 :)
> >>
> >>    Rolf
> >>
> >>
> >>    On 10/29/2013 09:38 AM, Håkon Markussen wrote:
> >>
> >>        I never get this alert.
> >>        I have a Think City (as Rolf Skeie) and use the iOS-app.
> >>        I have tested on both an exhausted aux-battery and on a brand new
> >>        battery in perfect condition.
> >>
> >>        Br.
> >>        Håkon
> >>
> >>
> >>        2013/10/29 Thomas Bergo <thomas.bergo at gmail.com
> >>        <mailto:thomas.bergo at gmail.com>
> >>        <mailto:thomas.bergo at gmail.com <mailto:thomas.bergo at gmail.com
> >__>>
> >>
> >>
> >>             I'm also get this alert.
> >>
> >>             Regard, Thomas
> >>
> >>             tirsdag 29. oktober 2013 skrev Rolf Welde Skeie følgende:
> >>
> >>                 Hi,
> >>
> >>                 I'm getting 12V battery alerts ala:
> >>                 "MP-0 PAALERT!!! 12V BATTERY CRITICAL (13.2V,
> ref=14.7V)"
> >>
> >>                 So the 1.5V hardcoded difference between charged and
> >>        non-charged
> >>                 state seems to be too low. The battery is working just
> >>        fine and
> >>                 has been tested without any issues, but seems to
> >>        stabilize at
> >>                 approx. 12.8V.
> >>
> >>                 Is this a global issue; are others experiencing this as
> >>        well?
> >>
> >>                 If this is a issue only relevant to my car: would it
> >>        make sense
> >>                 to allow for controlling some of these kind of values
> >>        through
> >>                 parameters?
> >>
> >>                 BTW, I believe the Think City module could be put in the
> >>                 production builds, it seems to be working fine.
> >>
> >>                 Best regards
> >>                 --
> >>                 Rolf Welde Skeie
> >>                 Solåsen 27, 5223 Nesttun, Norway
> >>        +47 92403016 <tel:%2B47%2092403016> <tel:%2B47%2092403016> /
> >>        rwskeie at gmail.com <mailto:rwskeie at gmail.com>
> >>                 ___________________________________________________
> >>                 OvmsDev mailing list
> >>        OvmsDev at lists.teslaclub.hk <mailto:OvmsDev at lists.teslaclub.hk>
> >>        http://lists.teslaclub.hk/____mailman/listinfo/ovmsdev
> >>        <http://lists.teslaclub.hk/__mailman/listinfo/ovmsdev>
> >>
> >>                 <http://lists.teslaclub.hk/__mailman/listinfo/ovmsdev
> >>        <http://lists.teslaclub.hk/mailman/listinfo/ovmsdev>>
> >>
> >>
> >>             _________________________________________________
> >>             OvmsDev mailing list
> >>        OvmsDev at lists.teslaclub.hk <mailto:OvmsDev at lists.teslaclub.hk>
> >>        <mailto:OvmsDev at lists.__teslaclub.hk
> >>        <mailto:OvmsDev at lists.teslaclub.hk>>
> >>
> >>        http://lists.teslaclub.hk/__mailman/listinfo/ovmsdev
> >>        <http://lists.teslaclub.hk/mailman/listinfo/ovmsdev>
> >>
> >>
> >>
> >>
> >>        _________________________________________________
> >>        OvmsDev mailing list
> >>        OvmsDev at lists.teslaclub.hk <mailto:OvmsDev at lists.teslaclub.hk>
> >>        http://lists.teslaclub.hk/__mailman/listinfo/ovmsdev
> >>        <http://lists.teslaclub.hk/mailman/listinfo/ovmsdev>
> >>
> >>
> >>    --
> >>    Rolf Welde Skeie
> >>    Solåsen 27, 5223 Nesttun, Norway
> >>    +47 92403016 <tel:%2B47%2092403016> / rwskeie at gmail.com
> >>    <mailto:rwskeie at gmail.com>
> >>    _________________________________________________
> >>    OvmsDev mailing list
> >>    OvmsDev at lists.teslaclub.hk <mailto:OvmsDev at lists.teslaclub.hk>
> >>    http://lists.teslaclub.hk/__mailman/listinfo/ovmsdev
> >>    <http://lists.teslaclub.hk/mailman/listinfo/ovmsdev>
> >>
> >>
> >>
> >>
> >> _______________________________________________
> >> OvmsDev mailing list
> >> OvmsDev at lists.teslaclub.hk
> >> http://lists.teslaclub.hk/mailman/listinfo/ovmsdev
> >>
> >
> > --
> > Rolf Welde Skeie
> > Solåsen 27, 5223 Nesttun, Norway
> > +47 92403016 / rwskeie at gmail.com
> > _______________________________________________
> > OvmsDev mailing list
> > OvmsDev at lists.teslaclub.hk
> > http://lists.teslaclub.hk/mailman/listinfo/ovmsdev
>
> _______________________________________________
> OvmsDev mailing list
> OvmsDev at lists.teslaclub.hk
> http://lists.teslaclub.hk/mailman/listinfo/ovmsdev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openvehicles.com/pipermail/ovmsdev/attachments/20131112/786594a6/attachment.htm>