Led, accelrometer, proximity sensor project

Discussion in 'The Projects Forum' started by jdpinto, Jun 26, 2013.

  1. jdpinto

    Thread Starter New Member

    Jun 26, 2013
    2
    0
    Hi,
    I'm starting on a project, a small device for the elderly.

    It comprises of the following:
    - Battery
    - 2 Led
    - Buzzer
    - ACCELROMETER ( To guage movement of person)
    - PROXIMITY SENSOR (To guage if somthing come near around 1.6M)
    - Microprosessor

    Design attached

    My questions are:
    1) To guage movement/no movement what is the best way, ACCELROMETER?
    2) Whats is the best sensor type PROXIMITY? 1.6M, moving
    3) What else do I need?
    4) Can someone help share what is the best electronics to to fit this project from http://singapore.rs-online.com

    Thanks for the help
    JAmes
     
  2. bance

    Member

    Aug 11, 2012
    315
    34
    You probably should explain what this device is intended to do, if people are to help!
     
  3. jdpinto

    Thread Starter New Member

    Jun 26, 2013
    2
    0
    Hi Bance,

    Thanks, its to be mounted on a wheel chair.
    It will have the following states:
    - Off (Inactivity for 30sec)
    - On (Any Movement)-LED State, Flicker
    - On (When any object comes in within 1.6M infront) - LED state, On/High - Buzzer-On

    Thanks JAmes
     
  4. wayneh

    Expert

    Sep 9, 2010
    12,151
    3,058
    How precise do you need the distance measurement? "1.6M" sort of implies maybe 1.5-1.7M, which I think would require ultrasonic range detection. If you just mean "close", like an IR motion detector, well then you could use an IR motion detector.
     
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