[Ovmsdev] 12V battery alerts
Håkon Markussen
hakon.markussen at gmail.com
Wed Nov 13 15:51:14 HKT 2013
False 12V alerts disappeared when triggering alert from ref - 2,0V.
// 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);
}
Br.
Håkon
2013/11/12 Håkon Markussen <hakon.markussen at gmail.com>
> 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>
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>> >> --
>> >> 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
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>> >
>> > --
>> > 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
>>
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