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PGA460: Proximity sensing solution behind the LCD glass

Miranda Gu
Genius 16632 points
Part Number: PGA460

Hi team,

My customer is looking for proximity sensing solution which put behind the LCD glass. 

Detection range: 1m, ±45°

Can PGA460 support such application? Or any other ultrasonic sensor is suitable?

  • 0
    TI__Expert 7485 points

    Hi Miranda,

    It is possible to sense through glass.  To do this, you will need to make sure there is a good mechanical connection between the transducer and the glass, which can be achieved by adding a little Cyanoacrylate adhesive.  Something similar was done in the following application note: https://www.ti.com/lit/an/snaa266a/snaa266a.pdf 

    Although it is possible to sense through glass, the customer will need to run a test to see if this would work for their specific system since there could be system-dependent factors that could affect the effectiveness of this approach.  To perform the test, the PGA460 EVM can be used for prototyping purposes.

    Regards,

    Mekre