Virtual Telemetry Sensors

Dear Jeti,

I am thinking of building a two engine electric airplane. I plan to use 2 Mui sensors for each of the conrtollers on only 1 Battery. This way I can control the currents to each motor and can balance the power.

The feature I am missing on this setup is a virtual telemetry sensor, which I can use to get the overall current and the overall used capacity. Especially the capacity would be great for the capacity alarm. I am thinking of a function similar to the logic switches, where 2 telemetry Signals can be combined using + - * / leading to a virtual telemetry value which can be used like a real one (display, logging, alarm etc...).

This would also solve issues of real strong motors, that need more than the maximum 200A, one could just install 2 mui sensor in parallel and use the combined values.

I am sure people can think of endless possibilities of using this, maybe to create a value of Amperage/Speed, Amperage/rpm etc. Also if constant floating point values could be used in the equation, scaling of Telemtry inputs to other units than the provided metric ones can be used by the user without the need of adding endless unit conversions in the firmware.

What are you thinking about the Idea?

Regards

Peter

You will never find a radio which will calculate a+b.
The radio will just use binary.
+ is OR function
* is AND function
Result is TRUE / FALSE

Lagaffe wrote: You will never find a radio which will calculate a+b.
The radio will just use binary.
+ is OR function
* is AND function
Result is TRUE / FALSE

What a narrow minded thinking. It makes no difference for the microprozessor to calculate some user values, it is calculating a lot of values internally, or do you think the hole transmitter firmware consists of just binary connections? Have you ever programmed anything?

Hallo Peter,
Each of the two MUI sensor calculate the same data, because the use the same +- connector!!
The result is the overall capacity. What you need are two Speed Controller with rpm connector and
a box which calculate the PWM values out of the rpm input of the Speed Controllers to Balance the real
power on both Propeller. The current amperage of each Speed Controllers are not interesting, but the two
engines had to work with the same rpm.
A two engine aeroplane need sync RPM and not syn amperage to work.
With greets

Harald

Hello Harald,

you are right for the voltage, but the capacity especally the capacity alarm would be very nice if combined. The tendency is going towards big cells (see genace 9000mah, 12000mah up to 25000mAh). Also the other examples I wrote (scaling to other units, amperage per rpm, amperage per speed etc) would be really cool and outstanding features. I still think its a good and easy to implement idea.

Regards

Peter