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Sensor for Human detection

Discussion in 'Sensors and Actuators' started by rabhishek91, Mar 30, 2013.

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  1. rabhishek91

    rabhishek91

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    Feb 15, 2013
    Hi everyone.:)

    My latest project includes detecting whether the person is seated or not(in automobiles). This can be done by using a pressure sensor or just by a micro switch.

    Suppose i'll keep something heavy on the seat. Then the sensor detects it as a true condition and gives the output. But actually no one(Human being) is seated .
    As a solution to this problem i need to detect the presence of human along with the weight .

    This can be done by using image processing methods but i don't want to complicate my project . Is there any other sensor or a way which would help me in detecting the presence of human? :confused:
     
  2. Rleo6965

    Rleo6965

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    9
    Jan 22, 2012
    You can use proximity sensors.
     
  3. rabhishek91

    rabhishek91

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    Feb 15, 2013
    Thanks for your reply sir.
    Proximity sensors detects the presence of near by objects without physical contact. It detects both living and non-living things. So how can that be used to differentiate Humans from a object.
    What's your opinion about it sir ?
     
  4. cjdelphi

    cjdelphi

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    Oct 26, 2011
    Maybe an infrared sensor? to determine if the body is giving off some kind of heat source? might be useless on a hot day though lol, then you'd need to look for a cooler heat source.
     
  5. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,363
    2,758
    Jan 21, 2010
    Maybe a methane sensor under the seat?
     
  6. rabhishek91

    rabhishek91

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    Feb 15, 2013
    Thanks for your reply.
    Yes sir. That's a good option but again it won't work in hot day.
    Anyway i'll go through it once.
     
  7. alfa88

    alfa88

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    Dec 1, 2010
    An IR LED and detector looking for an obstruction(legs).
     
  8. rabhishek91

    rabhishek91

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    Feb 15, 2013
    Thanks for your suggestion sir .:)
    Could you elaborate how methane sensor will be useful in detecting the human? :confused:
    I googled about methane sensor , i didn't get much information about it. Please help.
     
  9. rabhishek91

    rabhishek91

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    0
    Feb 15, 2013
    Yes sir. This might work but where to place the sensor?
    I have attached the sketch . Would you suggest me the best position?:)
     

    Attached Files:

  10. alfa88

    alfa88

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    Dec 1, 2010
    Position1 looks good to me. you might need several to account for taller/shorter people.
     
  11. rabhishek91

    rabhishek91

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    0
    Feb 15, 2013
    Thank you sir. I too think position 1 is the best one.
    It's impossible to place a sensor on a gear box so i think its better if it is placed in the door(Exact opposite to position 1). :)
    Yes. i need to place at-least 3 sensors in a line cause i need to detect occupants irrespective of their age (It may be a child or an adult).
     
  12. alfa88

    alfa88

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    Dec 1, 2010
    Oh, and I think Steve was referring to a paad detector.
     
  13. rabhishek91

    rabhishek91

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    Feb 15, 2013
    Sir can you throw some light on PAAD detector ?
     
  14. alfa88

    alfa88

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    Dec 1, 2010
    Flatsulence?
     
  15. rabhishek91

    rabhishek91

    41
    0
    Feb 15, 2013
    Sir i don't think it works. :rolleyes: (There may be lot of reasons).
    Thanks a ton sir. I'll go with your advice:)
     
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