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IWR1443: Use of mmwave sensors on level sensing

Julia Sánchez Sánchez
Prodigy 115 points
Part Number: IWR1443
Other Parts Discussed in Thread: , IWR6843AOP, AWR1843AOP

Hello,

In my company we are studying the integration of mmwave sensors chips of TI. Our target application is level sensing of granular solids (and liquids), on a low power consumption device.

On our initial approach, we were over your available documentation and got to the conclusion that the best option for this target was IWR1443. We purchased an IWR1443BOOST and got familiar with mmwave sensing technologies and your mmwave chips solution. Now, we have come to some questions about our initial decision of choosing IWR1443.

The questions are mainly the following:

  1. Automotive (AWRx) vs Industrial (IWRx) sensors. When choosing between these two categories, what should be taken into account? Only the needed certifications and temperature range? Or is there something related to RF applications and performance?
  2. Frequency: which should be the criteria used when choosing between 60GHz an 77GHz sensors? On your paper "Fluid-level sensing using 77-GHz millimeter wave" we can find "the industry is moving towards 77GHz range on level-sensing", but then for example, the lab "Level Sensing" from Radar Toolbox is also available for IWR6843AOP, which emits on 60GHz.
  3. Which is the criteria that leads toward your recomendation of IWR1443 for level sensing application? We can find this recomendation on TIDEP0091 (designed for that chip), on the paper I referred to previously, on many forum questions... but we don't seem to find the exact motivations for those recomendations.

Our main doubt right now is if AWR1843AOP would be an efficient solution for our needs (level sensing, low power, integration). Apparently, it works on the same frequency range and should have the same measurement possibilities, and it offers the advantage of the AOP, which eliminates the necessity of a non-regular PCB being used for the antenna manufacturing. We would like to know the criteria to choose between IWR1443 and AWR1843AOP for our application.

Thanks in advance for your help and best regards,

Julia Sánchez.

  • 0
    TI__Mastermind 23067 points

    Hello Julia,

    Please give me a little more time to respond to all of your questions

    Best Regards,

    Pedrhom

  • 0 in reply to Pedrhom Nafisi
    Prodigy 115 points

    Hello Pedrhom,

    Okay. I will stand by. 

    Best regards,

    Julia.

  • +1 in reply to Julia Sánchez Sánchez
    TI__Mastermind 23067 points

    Hello Julia,

    Sorry for the wait.

    • Automotive (AWRx) vs Industrial (IWRx) sensors. When choosing between these two categories, what should be taken into account? Only the needed certifications and temperature range? Or is there something related to RF applications and performance

    Generally the performance difference between 60GHz and 77GHz is negligible, but the biggest reason is due to regulations seen in different countries. Some countries have 77GHz available for both automotive and level sensing use cases while others have it where 77GHz is exclusively automotive thus making the operable frequency for level sensing 60GHz. Level sensing is one of the most established usages of Radar alongside automotive cases, and its generally the newer applications under Industrial that is going to 60GHz.

    • Frequency: which should be the criteria used when choosing between 60GHz an 77GHz sensors? On your paper "Fluid-level sensing using 77-GHz millimeter wave" we can find "the industry is moving towards 77GHz range on level-sensing", but then for example, the lab "Level Sensing" from Radar Toolbox is also available for IWR6843AOP, which emits on 60GHz.

    Due to the noted regulation differences between countries, we want to make sure we have collateral available to the widest amount of people so this includes those who reside in countries where they must use 60GHz for level sensing.

    • Which is the criteria that leads toward your recommendation of IWR1443 for level sensing application? We can find this recommendation on TIDEP0091 (designed for that chip), on the paper I referred to previously, on many forum questions... but we don't seem to find the exact motivations for those recommendations

    Generally the recommendation is IWR1443 because it is the lowest power consumption and 77GHz. Level sensing generally does not use or need a lot of power, but if you want extra performance and budget having extra power, any other device will work for this application.

    Best Regards,

    Pedrhom Nafisi