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BOOSTXL-PGA460: Parameter to control the width of the detection distance.

ALAGAPPAN SOLAYAPPAN
Prodigy 40 points
Part Number: BOOSTXL-PGA460
Other Parts Discussed in Thread: PGA460-Q1, PGA460

Hi,

I am working on PGA460-Q1 EVM with the LaunchPad MSP430 MCU. I am getting object detection output in the GUI.

I have two questions,

1). By selecting the Record Time Length to 65.536 ms, maximum detectable distance (length) is 11.239 m, but would like to know the detectable width range of the ultrasonic sensor.

2). By changing which parameter can I control the width of the detection Zone.

Thanks and Regards,

Alagappan Solayappan.

  • 0
    TI__Mastermind 27950 points
    Hi Alagappan,

    The field-of-view (FOV, or width of detection zone as you call it) is determined solely by the transducer, and cannot be modified/controlled by the PGA460 device.

    The FOV is typically very wide for low frequency (30-80kHz) and/or very small diameter transducers.
    The FOV is typically very narrow for high frequency (180-480kHz) and/or or very wide diameter transducers.
    For instance, the 58kHz Murata MA58MF14-7N transducer on the PGA460-Q1 EVM was designed specifically for automotive park assist applications, so the FOV is wide in the horizontal axis, and narrow in the vertical. More specifically, 80deg. x35°(typ.) according to its specification ( www.murata.com/.../productdetail ). The other Murata MA40H1S-R transducer is also a low-frequency transducer (40kHZ), but has a more balanced wide spread at 80deg. x80°(typ.).

    You can filter and compare various transducer part numbers by their frequency and FOV on a transducer specification table I generated on E2E at:
    e2e.ti.com/.../620399