How to make a digital gall gauge?

Hello

I'll draw a fuel gauge digital that calculates the exact volume of fuel in the tank. I measure the volume of fuel convert it to digital format and it interface FPGA tool and display it on LCD. I also compare the price of the fuel to the volume injected into the reservoir. If they are not equal a diode blinks, just in case, to a control fuel theft. but I do not know how to start. If someone knows about it can you please help me? I enclose my paper with this post.

concerning

Surya

First, you must analyze your needs:

(Rate, uncertainty) input rate

Output (rate and uncertainty)

or
weight?

or

absolute volume (& temperature)

and think about how to implement that in a car...

Tags: NI Hardware

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