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Digital Speedometer Design

johnnyjohn2009 johnnyjohn2009 is offline
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Join Date: Dec 2009
Posts: 8

I must first let you know that this is my final year project at University.

I have currently been doing research into how this could be acheived using VHDL. I plan to simulate the design in software only and perhaps implement it using an FPGA if I have time.

So far I have identified I need a pulse counter circuit counting an input pulse stream lets say every 1 second for simplicity. Taking this pulse count I plan to output the value onto a display after modifying the pulse count for calibration purposes. It all seems a bit too straight forward at the moment which is making me think I'm missing something drastic.

If anyone has any comments to point me in the right direction to aid research, that would be great. Also if anyone can suggest a book or resource they have found useful for learning VHDL I would be most grateful.

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jeppe jeppe is offline
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Join Date: Mar 2008
Location: Denmark
Posts: 348
An alternative solution could be to messure the time between two pulses - it all depend on the number of pulses/second.

Find inspiration in this: (copy the link to the Browser)

Last edited by jeppe; 12-03-2009 at 11:15 AM..
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