Water level Monitor

Discussion in 'General Electronics Chat' started by Phil Taylor, Feb 13, 2013.

  1. Phil Taylor

    Thread Starter New Member

    Feb 13, 2013
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    Hi I live beside a river in a very low lying house. I have been flooded twice. I would like to build a devive that monitors the water level out side my house when we are in a flood threat time. I need this device to sense a rise or fall over time of say 2m in depth and have an accuracy of 1mm scale. The average rise and or fall in flood times is approx. 1-2cm per hour. The idea would be to see if the water is tending to rise or fall over time and to set alarm points. It would be good to log the data but not esential. Has anyone got any ideas please? Phil
     
  2. MrChips

    Moderator

    Oct 2, 2009
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    My idea would be to move to higher ground. Your problems with flooding is only going to get worse.
     
  3. #12

    Expert

    Nov 30, 2010
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    Learn microprocessors. It's going to require a lot of programming to detect 2 meters, within 1/10th of 1%, and log the data for days or weeks.
     
  4. DC_Kid

    Distinguished Member

    Feb 25, 2008
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    its easier to buy a off-the-shelf device that does this.
     
  5. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    Just buy a buoy..

    What are you gonna do when the "monitor" tells you the water is higher anyways?
     
  6. sheldons

    Well-Known Member

    Oct 26, 2011
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    Heres a simple circuit to try.....
     
  7. DC_Kid

    Distinguished Member

    Feb 25, 2008
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    when the siren sounds in middle of the night there is no need to look, you just hop in the boat ;)
     
  8. gerty

    AAC Fanatic!

    Aug 30, 2007
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    Is this going to be located outdoors, where it will have the tendency to freeze, or have ice form on it?
    A simple float switch such as used on sump pumps would work ,but, wouldn't have your required accuracy.
     
  9. crutschow

    Expert

    Mar 14, 2008
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  10. Duane P Wetick

    Active Member

    Apr 23, 2009
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    You can probably make a fairly accurate reflective level sensor using off the E-bay shelf photoelectric devices; A-B or other industrial types...mount it up high enough where it won't get flooded; 20ft. may not be high enough. I live 100 ft. above the water and have never been flooded.

    Cheers, DPW [Everything has limitations...and I hate limitations.]
     
  11. crutschow

    Expert

    Mar 14, 2008
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    How would a photoelectric device detect water level to the accuracy he desires? :confused:
     
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