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CCS/MSP430FR6047: Multi-Transducer Based Measuring

highfreq
Prodigy 40 points
Part Number: MSP430FR6047
Other Parts Discussed in Thread: TIDA-01486, EVM430-FR6047

Tool/software: Code Composer Studio

Hello,

I have been researching ultrasonic based liquid measuring long time. Nowadays, I am working  with 3 inch large pipe and my target  relative error is  under %0.2.

I am considering use 3 or 4 pair transducer pair on the pipe (X or Z angled) in order to pass instaneous flow error and volumetrical error (<%0.2). 

Can I get any design consideration?

is the MSP430FR6047 adequate for topics below?

1. Can manage more than one transducer pair synchronously (or more chip required)?

2. What is minimum (or considered) gap between Tups and Tdns?

3. What is minimum  (or considered) gap between UPS0 and UPS1  ...UPSn  (for one pair)?

  • 0
    TI__Mastermind 45685 points

    Hi,

    1. Yes, it can run more than one transducer pair. Please refer to this link

    2. The gap between Tups and Tdns is meanly depends on how long your transducer keeps ringing after excitation. The more energy you excite the longer time gap you need. Normally, we set 3ms for 20 pulses excitation signal.

    3.   UPS0 to UPS1 for one channel depends on the calculation time. Normally, it will take under 20 to 30ms. It should be okay if you set at 50ms.

    Best regards,

    Cash Hao 

  • 0 in reply to Cash Hao11
    Prodigy 40 points

    Hi. Thank you for help.

    According to your linked documents, I can connect 2 pair (total 4) transducer to TIDA-01486 expansion board. Am I right?

    And I have two question;

    1. Does satandart demo application source file need any changes? (I have a EVM430-FR6047 board)

    2. What can I do if I want to connect 5 pairs transducer for large pipe?

  • 0 in reply to highfreq
    TI__Mastermind 45685 points

    Hi,

    1. The source code is in the application note. You can find it and use it.

    2. I do not know exactly what you should do. But you may need to change the schematic first. Add more channels on it. And the software change will be needed too.

    Best regards,

    Cash Hao

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