[Ovmsdev] Gas vs. battery metric?

Michael Balzer dexter at expeedo.de
Mon Jun 15 02:46:01 HKT 2020


I strictly vote against re-interpretation of the SOC metric. Where
metrics have clear semantics we should not make them dependent on some

A battery is not a fuel tank, and vehicles may have both. "v.b." is the
namespace "vehicle battery" and shall not be populated with non-battery

That's what I meant by adding technology specific metrics: if the
vehicle has a fuel tank, additional standard metrics describing that
fuel tank shall be present.

Fuel tank specific metrics might e.g. get the namespace "v.ft.", ICE
engine specific metrics might get "v.ice.", fuel cell metrics "v.fc.",
rocket thruster metrics "v.rt." … you get the idea.

Make a proposition for the metrics sets you need. Try to define them as
generalized as possible.

That will probably include duplicates of some metrics, like the ranges &
consumption. That's necessary to be able to describe a hybrid, and some
units among those will also need to be different (e.g. consumption in
litres / m³ per km).


Am 14.06.20 um 18:59 schrieb Chris van der Meijden:
> Thank you for considering my thoughts.
> I believe it is a good idea to use a v.tech variable and not using gas
> or gazoline. That gives OVMS enough flexibility and is also a (little)
> statement.
> I'm also looking forward to rocket propulsion add ons :-))
> Greetinx
> Chris
> Am Sonntag, den 14.06.2020, 08:21 -0700 schrieb Craig Leres:
>> On 2020-06-13 08:31, Michael Balzer wrote:
>>> How about adding an array or set metric like "v.ext" or "v.tech",
>>> for defined technology codes. A tag present in the metric means the
>>> additional metrics, commands & configs for that technology are
>>> available. 
>> My goal is to make it possible for the app to depict soc with something
>> other than a battery graphic when the energy source is not a battery.
>> How about v.tech with "battery" and "other" as the initial two possible
>> values?
>> 		Craig
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Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
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