<div dir="ltr">Just a comment, for the i-Miev we don't have the ambient temperature available.<div>So for now we need a static diff that is grater then 1.5V</div><div><br></div><div>Regards, Thomas<br><div><br></div></div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">2013/10/30 Rolf Welde Skeie <span dir="ltr"><<a href="mailto:rwskeie@gmail.com" target="_blank">rwskeie@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Somehow I feel a few fingers pointing my way.. :)<br>
I can have a go, but do not have time until sometime next week.<br>
<br>
The algorithm I envision goes something like this:<br>
<br>
cold_lim = 10; // celcius that is..<br>
batt_diff = 2; // max difference between charged and non-charged<br>
batt_definitely_low = 12; // definite low level limit<br>
volts_per_degree = 0.05;<br>
<br>
// add cold weather component<br>
if (env_temp < cold_lim) {<br>
batt_diff += (cold_lim - env_temp)*volts_per_degree;<br>
}<br>
<br>
if ((batt_now < batt_definitely_low) || ((batt_charged - batt_now) > batt_diff))) {<br>
alarm_low();<br>
} else {<br>
alarm_cleared();<br>
}<br>
<br>
Any thoughts?<br>
<br>
Actually we should probably look at the server logs and create some statistics to measured correlated 'batt_now' and 'env_temp' to properly calibrate 'volts_per_degree'. Also look at peak highs and lows to see how the batteries out there are performing :)<br>
<br>
Regards<span class="HOEnZb"><font color="#888888"><br>
Rolf</font></span><div class="HOEnZb"><div class="h5"><br>
<br>
<br>
On 10/30/2013 12:54 AM, Mark Webb-Johnson wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Can someone try it at 2.0V (rather than 1.5V) and see if it solves the false-alerts problem?<br>
<br>
Regards, Mark.<br>
<br>
On 29 Oct, 2013, at 5:10 pm, Rolf Welde Skeie <<a href="mailto:rwskeie@gmail.com" target="_blank">rwskeie@gmail.com</a>> wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Ok, it seems like a few have similar issues.<br>
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.<br>
From my observations it seems like increasing this to 2.0V would take care of most mis-firing events.?..<br>
<br>
Disclaimer: I'm not an expert on batteries...<br>
<br>
Running on 2.5.5 experimental/TC<br>
<br>
Rolf<br>
<br>
On 10/29/2013 10:00 AM, Matt Beard OVMS wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Yup, I also get this message and it would be great if it were working<br>
properly, but it actually fires at 13.1V which is far too high.<br>
<br>
Matt<br>
<br>
<br>
<br>
On 29 October 2013 08:46, Rolf Welde Skeie <<a href="mailto:rwskeie@gmail.com" target="_blank">rwskeie@gmail.com</a><br>
<mailto:<a href="mailto:rwskeie@gmail.com" target="_blank">rwskeie@gmail.com</a>>> wrote:<br>
<br>
I have the following features set:<br>
#0=1, #8=1, #9=1, #15=1, all others =0.<br>
<br>
Can't remember which one made it work, but one of them did, my guess<br>
would be #9 :)<br>
<br>
Rolf<br>
<br>
<br>
On 10/29/2013 09:38 AM, Håkon Markussen wrote:<br>
<br>
I never get this alert.<br>
I have a Think City (as Rolf Skeie) and use the iOS-app.<br>
I have tested on both an exhausted aux-battery and on a brand new<br>
battery in perfect condition.<br>
<br>
Br.<br>
Håkon<br>
<br>
<br>
2013/10/29 Thomas Bergo <<a href="mailto:thomas.bergo@gmail.com" target="_blank">thomas.bergo@gmail.com</a><br>
<mailto:<a href="mailto:thomas.bergo@gmail.com" target="_blank">thomas.bergo@gmail.com</a><u></u>><br>
<mailto:<a href="mailto:thomas.bergo@gmail.com" target="_blank">thomas.bergo@gmail.com</a> <mailto:<a href="mailto:thomas.bergo@gmail.com" target="_blank">thomas.bergo@gmail.com</a><u></u>>__>><br>
<br>
<br>
I'm also get this alert.<br>
<br>
Regard, Thomas<br>
<br>
tirsdag 29. oktober 2013 skrev Rolf Welde Skeie følgende:<br>
<br>
Hi,<br>
<br>
I'm getting 12V battery alerts ala:<br>
"MP-0 PAALERT!!! 12V BATTERY CRITICAL (13.2V, ref=14.7V)"<br>
<br>
So the 1.5V hardcoded difference between charged and<br>
non-charged<br>
state seems to be too low. The battery is working just<br>
fine and<br>
has been tested without any issues, but seems to<br>
stabilize at<br>
approx. 12.8V.<br>
<br>
Is this a global issue; are others experiencing this as<br>
well?<br>
<br>
If this is a issue only relevant to my car: would it<br>
make sense<br>
to allow for controlling some of these kind of values<br>
through<br>
parameters?<br>
<br>
BTW, I believe the Think City module could be put in the<br>
production builds, it seems to be working fine.<br>
<br>
Best regards<br>
--<br>
Rolf Welde Skeie<br>
Solåsen 27, 5223 Nesttun, Norway<br>
<a href="tel:%2B47%2092403016" value="+4792403016" target="_blank">+47 92403016</a> <tel:%2B47%2092403016> <tel:%2B47%2092403016> /<br>
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Solåsen 27, 5223 Nesttun, Norway<br>
<a href="tel:%2B47%2092403016" value="+4792403016" target="_blank">+47 92403016</a> <tel:%2B47%2092403016> / <a href="mailto:rwskeie@gmail.com" target="_blank">rwskeie@gmail.com</a><br>
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<a href="tel:%2B47%2092403016" value="+4792403016" target="_blank">+47 92403016</a> / <a href="mailto:rwskeie@gmail.com" target="_blank">rwskeie@gmail.com</a><br>
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Solåsen 27, 5223 Nesttun, Norway<br>
<a href="tel:%2B47%2092403016" value="+4792403016" target="_blank">+47 92403016</a> / <a href="mailto:rwskeie@gmail.com" target="_blank">rwskeie@gmail.com</a><br>
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