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Resistance Based Sensors

  1. Sep 11, 2006 #1
    Hey guys, i'm trying to propose an appropriate resistance based sensors to measure the deflection of a beam and the strain of the metal on the underside of the beam for an old peer with steel beams which are somewhat corroded. The system has to measure the strength of these beams.
    I'm trying to include simple circuit diagrams of the sensors and how they will be set up.
    I'm thinking of using a wheat-stone bridge, which has four resistors to my knowledge, but not quite sure how to apply it to the bridge or how to do the circuit diagrams. What could i expect for the output of the sensors?
    Any help or advice would be much appreciated, thanks.
     
  2. jcsd
  3. Sep 11, 2006 #2

    Gokul43201

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    Why not just buy a strain gauge?
     
  4. Sep 11, 2006 #3

    berkeman

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    Staff: Mentor

    Gokul's correct. That is the usual way to make the measurements that you are referring to:

    http://en.wikipedia.org/wiki/Strain_gauge
     
  5. Sep 12, 2006 #4
    Oh ok, thanks alot guys.
     
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