TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC

It's raining it's pouring...

Discussion in 'Model S: User Interface' started by MartyL, Mar 7, 2018.

  1. MartyL

    MartyL Member

    Joined:
    Jul 22, 2017
    Messages:
    46
    Location:
    San Jose, CA
    How does the car know?
     
  2. Uncle Paul

    Uncle Paul Active Member

    Joined:
    Nov 1, 2013
    Messages:
    2,109
    Location:
    Canyon Lake,CA
    It's pretty smart.

    Most likely camera sees raindrops on the windshield.
     
  3. MartyL

    MartyL Member

    Joined:
    Jul 22, 2017
    Messages:
    46
    Location:
    San Jose, CA
    Sounds right.
     
  4. Travis Denardo

    Travis Denardo VTHokie195

    Joined:
    Feb 12, 2016
    Messages:
    28
    Location:
    Fairfax Station, VA
    What about you pre-AP cars?
     
  5. Derek Kessler

    Derek Kessler Active Member

    Joined:
    Apr 15, 2016
    Messages:
    1,001
    Location:
    Cincinnati
    Pre-AP and AP1 work the same as any older car with rain-sensing wipers: an infrared sensor picks up decreased IR light reflected of the inside of the window because the raindrops defract the light.
     
  6. Travis Denardo

    Travis Denardo VTHokie195

    Joined:
    Feb 12, 2016
    Messages:
    28
    Location:
    Fairfax Station, VA
    That’s awesome. Where is the IR sensor on those cars? At the top of the windshield?

    What is AP2 & higher doing? Using the cameras?
     
  7. Derek Kessler

    Derek Kessler Active Member

    Joined:
    Apr 15, 2016
    Messages:
    1,001
    Location:
    Cincinnati
    Typically, yes, the sensor was stuck top-center of the windshield by the mirror.

    AP2 cars ditched that sensor in favor of using the cameras to gauge how much water is on the window. Hope exactly it determines that isn't clear — both because Tesla hasn't told us and machine learning of this type is by its very nature opaque. I suspect that it's looking for the telltale signs of light distortion, since it seems to fire less often if there's not a strong light source (such as headlights or a street light) hitting the water-covered windshield.
     

Share This Page

  • About Us

    Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.
  • Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


    SUPPORT TMC