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MSP430FR6047: MSP430FR6047

Part Number: MSP430FR6047
Other Parts Discussed in Thread: MSP430FR6043

Hello, we are starting to develop an ultrasonic spirometer (gas flow sensor) used in medicine, we have a few questions about your msp430fr6047 module. Briefly about the sensor. The diameter of the tube is 25 mm. 2 sensors are located opposite each other at an angle ᵠ. According to the international standard BS EN ISO 23747_2015, the sensor must measure the peak volumetric speed, namely the flow of 10 liters is collected in less than 100 miles of seconds. (excerpt from the standard will be attached below) the Error between several measurements should not exceed 5%.

1. What is the maximum sampling rate at which the microcontroller can operate.

2. What frequency of the probing signal is optimal to use in our case.

3. Will we be able to work on piezo/piezo receivers with an operating frequency of 300 kHz

4. If your counting algorithm will not be able to give this sampling frequency, if we can alter the algorithm under him to increase the sampling frequency.

Vasilchenko Dmitry

  • Hi Dmitry,

    First, about your application the ultrasonic spirometer, we suggest you to use the MSP430FR6043 instead of the MSP430FR6047.

    And second, the highest operating frequency you can set now is 50Hz limited by the communication speed with the GUI. I am communicate with our software team to see if it is possible to higher the frequency without GUI.

    Best regards,

    Cash Hao

      

  • Hi Dmitry,
    1.The operation frequency is 50Hz. Although it can be faster by modifying the software but we do not recommend that.
    2. If you are using a 300kHz transducer, we suggest you set 1MHz ADC sampling rate.
    3. MSP430FR6043 can support 300kHz transducer

    Best regards,
    Cash Hao

  • With an increase in the sampling rate, what parameters can go beyond the permissible errors?

    Our programmer asks you to clarify whether it is possible to change your algorithm of work and is there any file for further editing?

  • Hi Dmitry,
    I would like to separate out the MSP430FR6043 chip vs. Ultrasonic SW library.

    MSP430FR6043Chip:
    You can develop the algorithm that is suitable for your application. The chip does not put any of the restrictions that are mentioned in the queries above.

    Ultrasonic SW Library:
    The library is developed for a broad set of residential water flow meter and gas meter applications.

    Are you asking about how to build up your own algorithm based on the MSP430FR6043 chip?

    Best regards,
    Cash Hao

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