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Ultrasonic sensor distance range from 50mm to 1000mm

Jairo Berrio
Prodigy 30 points
Other Parts Discussed in Thread: PGA450-Q1, PGA460, MSP-EXP430F5529LP, MSP430F5529

I am currently working on an application that requires an ultrasonic sensor to determine the ice level in an ice making machine.

I need to be able to read levels from 50mm to 1000mm.  I have looked into using the PGA450-Q1, but  the application note has a distance range from 7 meters to under 1 meter.  Will it go as low as 50mm?

There is one other issue that concerns me.  I see that the PGA450 has an integrated 8051, but how much code would I be writing on the 8051 for an application such as mine?  In my case I will have a processor in the design and would much rather have all my code there instead of maintaining two separate ones.

What would you recommend in my case?

  • 0
    TI__Expert 7665 points

    Hi Jairo,

    Since the PGA460 has numerous enhancements compared to the PGA450, I would recommend the PGA460 here. The PGA460 supports multiple communication interfaces, which can be used to configure the device using an external microcontroller. The BOOSTXL-PGA460 EVM specifically shows the use of the PGA460 with the MSP430F5529 microcontroller that is in the MSP-EXP430f5529LP Launchpad board.

    In regards to your question on distance, Section 2.8 of SLAA907C provides more details on how to improve the minimum detection range.

    Regards,

    Mekre