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RE: Ultrasonic sensor

Other Parts Discussed in Thread: TDC1000

Clancy

I just read your article in the October Product Design & Development magazine.  I had not seen the two stage threshold + integration method before for dealing with longer distance/SNR issues.  Can you point to any reference with more technical details? 

I am new to this form, so sorry if a second question has been answered, but I'm curious if theTDC1000 and TDC7200 or other TI products can detect pedestrians as well as vehicles at the longer distances mentioned.

Thanks

Bruce

  • Bruce,

    There is a good article about the single threshold algorithm available here:

    http://www.ti.com/lit/pdf/slyt481

    The TDC1000 family is low power and is better for shorter distance applications.  I believe that the output of the TDC1000 is a digital signal and that you determine the distance by counting the pulse width.  If that's the case, it doesn't have the flexibility of the PGA450 for programming your own detection algorithm.

    I'll share this thread with the folks that work with the TDC1000 so that they can comment on what the output is and what tuning is available.