Rain Sensing Wipers

Discussion in 'The Projects Forum' started by furkamania, Oct 19, 2008.

  1. furkamania

    Thread Starter New Member

    Oct 19, 2008
    i have been doing this project...

    im doing it using the IR sensing technique...
    i.e IR transmits and received beam of light after reflection from windscreen from inside...when there is no water outside windscreen then there is more light received at the receiver end ...when rain occurs some of light is lost resulting in less amount of light enters the receiver hence this triggers the system....

    anyone has help on this one...the circuit diagrams etc
    any help is much appreciated...
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    It would be faster if you could post up your work so we can see how you are trying to do this. How do you allow for dirt accumulation? What is the critical angle for the sensor?
  3. hobbyist

    Distinguished Member

    Aug 10, 2008
    I don't think using a variance in light reflected will work, cause there is a lot of refracted light to deal with as well as the change in lighting continually happening which could throw off the detector, since rain is the key factor try some sort of a moisture detector.
    Just my opinion.
  4. pradeep d rajmane

    New Member

    Dec 22, 2008
    U just have to place ur senser at the bottom of bonnet (inside ) just below the wiper and when it rains . It will get wet and then will trigger the circuit .