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Sensor question

  1. Nov 2, 2015 #1
    I need to indentify this type of sensor.

    Need to work in dark.
    Need to scan only in x axis. ( not to have angle in y axis only in x ) Something like a plate.
    And needs to react when movement is changed in that plate.
  2. jcsd
  3. Nov 2, 2015 #2
  4. Nov 3, 2015 #3
    Hmm.. that may be it.
  5. Nov 4, 2015 #4


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    Staff: Mentor

    Can you post a sketch of what you want this sensor/scanner to do? And when you say "plate", do you maybe mean "plane"? :smile:
  6. Nov 4, 2015 #5
    Yea plane :) My bad.

    Well for example: if i put sensor 2m on my wall it need to detect movements on that height not lower. I am 2.1m and it detects me. My cat is .2m and it doesnt detect her.
    Also need to have range: 3-5m minimum.
  7. Nov 4, 2015 #6


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    Staff: Mentor

    Can you use a Passive InfraRed (PIR) sensor that only sees from 2m up?
  8. Nov 4, 2015 #7
    Interesting. Will search it.
  9. Nov 4, 2015 #8


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    Gold Member

    You can use a motion detector from a security system, and block off parts of the window with tape on the inside. Trial and error, but relatively cheap. Most have no/nc contacts for triggering another device.
  10. Nov 15, 2015 #9


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    Science Advisor
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    Gold Member

    You can buy IR beam systems. They comprise an IR transmitter and receiver. Alarm triggered when the beam between the two is broken.
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