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IWR1443: IWR1443

peter mccormick
Expert 1110 points
Part Number: IWR1443
Other Parts Discussed in Thread: PGA460, AWR1642, AWR1443, , , IWR1642, IWR1642BOOST, MSP430F5529

We have used your PGA460 ultrasonic product extensively for fluid tank level measurement. Tanks are typically about 9ft deep. Your mm wave product seems vaguely similar to the PGA460. We build chemical tank level measurement sensors among other products.

I saw 4cm as accuracy-resolution in one technical article and sub mm mentioned in others. What is expected distance accuracy or resolution if we use a WR1443 mounted 4ft above a tank of water? We need a few mm accuracy but only 10ft range. Is mm wave a good fit?

Should we use the AWR1443 or AWR1642?

How close can the antenna be to the fluid being detected?

Is this a good kit to start with the IWR1443-MMWAVE-BNDL ?

We have had to get FCC approval for prior telemetry products.  Is FCC approval difficult for the mm wave products since it is relatively low power?

Thanks, Peter

  • 0
    TI__Guru 50240 points
    Hi Peter,

    I'd highly recommend getting the IWR1443BOOST and looking at the High Accuracy Range Measurement Lab on the TI-Resource Explorer: dev.ti.com/.../

    With this you are going to see accuracy better than 2 mm for your specific application and with a precision mount and appropriate tank your accuracy will be much better.

    Just to clarify, TI's mmWave devices have very fine accuracy but range resolution of about 4 cm. In this instance resolution means the distance between two objects for the sensor to distinguish that two different objects are there.

    I would say the Bundle is going to be more than you will need and the IWR1443BOOST should be more than appropriate for you.

    I cannot comment on FCC regulations because I do not know enough about your application. It has not been a problem for most of our customers but I am unable to provide you with a declaration either way.


    Cheers,
    Akash
  • 0 in reply to Akash Gondalia
    Expert 1110 points

    Akash,

    What is the difference between the IWR1443-MMWAVE-BNDL and IWR1643-MMWAVE-BNDL? I see that the 1443 raw chip is about $30 and the 1643 is $130 which makes our end product more expensive. Can we get 1mm distance accuracy with the 1443 ?

    Is there an easy to use evaluation software package (such as your PGA ultrasonics) with the Bundle or do we use the  High Accuracy Range Measurement – 14xx software eval package? Is using the BNDL easier or the same eval software ?

     

    Do we use the CCS for the majority of the integration (we now use CCS with the MSP430-4619 for our products).?

     

    Can we use the SCI 'RS232' Tx Rx  lines to send all commands and parameters to the 1443 or do we need SPI ?

     

    Do customers typically use your CCS libraries to operate the 1443?   Is it impractical to simply send and receive parameters and commands over a serial port as done on your PGA ultrasonic products?

     

    We measure tank fluid levels. Is there a good electromagnetic reflection from water, acids, slurrys …?

     

    Thanks, Peter

  • 0 in reply to peter mccormick
    TI__Guru 50240 points
    Peter,

    First, There is discrepancy on pricing. IWR1443 is listed at $19.99 and IWR1642 is 23.99. However you should talk to your local TI Sales Representative for more accurate pricing information.

    BNDL means BoosterPack and Dev Pack are included. You do not need the Dev Pack for the High Accuracy Range Measurement Lab so either the IWR1443BOOST or IWR1642BOOST will be appropriate. It might be in your interest to test both since IWR1642 will tend to have better accuracy due to processing power of on-board DSP.

    IWR1443 will have better than 1 mm accuracy for solid objects and better than 2 mm accuracy for liquids. This can be improved with an appropriate mount and setup.

    Lastly, CCS is our recommended IDE but I also believe others including IAR are supported. Chirp parameters and commands are sent over UART for most of the labs but other interfaces including SPI are definitely supported.

    Let me know if you have more questions.

    Cheers,
    Akash
  • 0 in reply to Akash Gondalia
    Expert 1110 points

    ti_mmwve_install_problems.docxWe have used the MSP430F5529 Launchpad with the PGA ultrasonic sensor Dev kit and it worked well.  It used a special Eval software.  Does the MMWAVE-BNDL have similar easy to use eval software?

     Does the IWR1642-MMWAVE-BNDL include a plug into the IWR1642BOOST similar to the Launchpad ?

    Is testing and setup easier with the complete IWR1642-MMWAVE-BNDL or do we still use the CCS IDE?

    It sounds as if the IWR1642BOOST is all that we need but we will get the IWR1642-MMWAVE-BNDL if it saves setup time or has special easy to use software.

    Thanks, Peter

  • 0 in reply to peter mccormick
    Expert 1110 points

    Do you have this IWR1443 schematic in Orcad, or DXF or DWG format to import as a starting point for our design?  It is your IWR1643BOOST board ?

    Thanks, Peter

  • 0 in reply to peter mccormick
    Expert 1110 points
    Correction schematic for IWR1443BOOST