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MSP430FR6043: Heat Meter Options

Kripa Venkat
Expert 5365 points
Part Number: MSP430FR6043
Other Parts Discussed in Thread: TIDM-02005, EVM430-FR6043, EVM430-FR6047, TMP117EVM, ADS1220EVM, MSP430F5529, ADS1120, LMT01, TMP116

Hi, 

I am looking to design a heat-meter using ultrasonic technology. Based on MSP430 ultrasonic website, http://www.ti.com/microcontrollers/msp430-ultra-low-power-mcus/ultrasonic-performance-sensing-mcus-overview.html there is mention of water and gas meters only. However, i am quite sure that i can design a heat meter using the MSP430FR6043 device. Can you please validate my idea of using this for heat meters? If my idea is valid, I need the following 

1. HW tools required to evaluate heat metering application

2. SW tools required to evaluate heat metering application

3. Any additional parts to measure temperature? 

4. Any additional reference designs and EVMs than the ones EVM430-FR6043 and TIDM-02005

Thank you

Kripa

 

  • 0
    TI__Intellectual 2100 points

    Hello,

    Below the answers...

    General: A heat meter is basically a flow meter that also measures the temperature of the forward flowing medium towards the heat exchanger and back flowing medium away from the heat exchanger. The medium is usually water, sometimes saline liquids or emulsions. The amount of heat that is consumed is calculated as product of "volume of flow [m^3]" * "difference of temperature [K]" * "specific heat capacity of the medium[MW/m^3/K]".

    Q1. HW tools required to evaluate heat metering application

    On 1: to build a heat meter simply use...

              - EVM430-FR6043 or EVM430-FR6047 (both measure the flow rate and volume)

              - Electronic/sensor to pick up the temperature either  digital sensing or analog sensing (your choice)

          - proposal for digital temp sensing: 2x TMP117EVM (this is a integrated digital temp sensor + USB adapter)

          - proposal for analog temp sensing: 2x PT1000 sensors e.g. immersion type + ADS1220EVM (this allows to pick temp up from PT1000 sensors)

              - a heat meter Pipe with ultrasound transducers and prepared for temp sensors/optional (this allows to pick up the flow and temperature nicely)

                 (TI has no certain preference which one you are using; you'll find plenty if you search on the web for "heat meter pipe")

                     The picture below was the first that popped up on my PC => that one is suitable...

      See the source image

            - some wires and connectors to connect the proposed EVMs   

    The given component selection is just one of many possible configurations. The chosen assembly here is based on existing EVMs. You can of course analyze the schematics and layouts of the EVM to constuct your own PCB; Still I recommend to have the EVMs handy for compare measurements in case debugging is required.

    And yes the 'FR6043 can be used to measure the amount of heat. However a complete heat meter as of 2020 might feature additional functions. Those are...

    - A radio link (check out out TI's Simple-Link devices for that)

    - A cable link for multiple measurement sensor points (check out out MSP432E401 for Ethernet or MSP430F5529 for USB)

    Q2. SW tools required to evaluate heat metering application

    On 2: You can use any IDE you like; The examples on the WEB are prepared for "CCS" and "IAR" those I strongly recommend.

    Q3. Any additional parts to measure temperature?

    On 3: The above selection in "answer 1" was just one choice; There is also the ADS1120 available (less resolution but lower in price) for analog measurements. The TMP116 for digital temperature measurements would do too. Alternatively you could use e.g. the LMT01.

    Q4. Any additional reference designs and EVMs than the ones EVM430-FR6043 and TIDM-02005

    On 4: This is also addressed in "answer 1".

    have a nice day

        Johann

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