• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 47 subscribers
  • Views 503 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

PGA450Q1EVM: Self diagnostic feature of Sensor element

Arun C6
Intellectual 295 points

Part Number: PGA450Q1EVM
Other Parts Discussed in Thread: PGA450-Q1, TIDA-00151

Hi,

I want to implement self diagnostic feature in my system. Therefore in every startup my system able to check transducer working or not and inform to ECU.

Is any way to implement above feature in my system.

  • 0
    TI__Mastermind 28000 points
    Hi Arun,
    Referring to section "7.3.9 Transducer Saturation Time" of the PGA450-Q1 datasheet, this feature can be used as a diagnostic system diagnostic check of the transformer and/or transducer's operating status. By monitoring the saturation time, the device effectively is performing a resonant decay and SPL check of the transducer.

    Thus, if the saturation time is too long, this could indicate that there is a transducer defect or an impeding substance making contact with the transducer face (i.e. mud, ice, etc.). If the saturation time is too short, this could indicate that the transducer is disconnected or damaged. The saturation time of a working transducer will be known (with tolerance) for your master controller to be able to anticipate an expected saturation time.

    The saturation time check is performed in the following example code: "TIDA-00151 UART & LIN Demo Firmware for PGA450-Q1" ( www.ti.com/.../tidcab3 )