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MSP430FR6047: How do you recommend setting up the wave?

Jack Son
Prodigy 30 points
Part Number: MSP430FR6047

Tool/software:

Hi, The following is two signal using the same circuit and transducer with the Number of Pulses set to 8(left) and 16(right). 

Of course the Gain Control is little different.

I will be using this system in a noisy environment.

How do I set it up so that it's close to the standard for signal processing(1) and meet fewer errors?(2)

16Pluses

  • 0
    TI__Genius 10550 points

    Hi Jack,

    When you take a look at the waveforms tab, are the measured dToF, AToF, and flow rate correct? I would advise that with each configuration, you check to see how the calculation outputs look. I have seen waveforms similar to all four of the above give good quality measurements.

  • 0 in reply to Dylan OBrien
    Prodigy 30 points

    Hi Dylan.

    Thanks for your reply.

    At First, I apologize for the incorrect post.
    The picture2,3,4 is same picture.  So please just see, the Picture1(8pulses), Picture2(16pulses)

    I saw in the post that the standard number of Pulse is 20.
    So I asked. 

    About the flow rate, in my test, Picture1 much more error than picture2.

    Can I think that the number of sine-wave in the received signal does not matter?

     
  • 0 in reply to Jack Son
    TI__Genius 10550 points

    The number of sine waves should be roughly equal to the number of pulses you've set in the GUI, with consideration for the excitation time and the ring-down time on the transducers. That is, if I am understanding what you mean correctly. If it sounds like I do not understand what you mean please correct me and elaborate so I can help more.

    The number of sine waves/ pulses in the received signal certainly does matter. However, some test cases work best with more pulses, other test cases work better with fewer. It is up to you to try a range of different values to see what works best for yours.

    If you notice that more pulses gives you more accurate ToF calculations then by all means increase it, but you should continue to test lower ones as well.

    You may find it helpful to view the USS academy for more information and step by step guides on calibrating the device properly.

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