C program for water velocity measurements

[dioross]

hi to all!

i am working on a velocity meter that measures average velocity in an open channel waterflow and i am planning to implement it using PIC microcontroller.. i dont have an idea about the algorithm that can accurately obtain the measurement..i have a rotary incoder that outputs pulses..and i need to interpret those pulses to have the measurement..help me pls!!..

best regards

 

[nickdean1]

Try to think about the problem mathematically:

average velocity = change in distance / change in time ------ (Vav = dD/dt)

read the datasheet for the rotary encoder to find out number of pulses per revolution

use the number of revs per min to calculate the distance travelled and plug everything into the top equation

There - you will have an algorithm -Good luck