Material detecting sensor(s) system.

Discussion in 'The Projects Forum' started by JJoll, Jun 11, 2015.

  1. JJoll

    Thread Starter Member

    May 7, 2013
    I am working on a project where i need to detect and differentiate between different
    types of containers. I am trying to build a system that sorts out different materials types.
    To be specefic, I need to sort out glass, metal, plastic and paper. So I need a sensor system that
    detects material types. Is this possible? if yes, how can I achieve this?
    Some people have told me that this is not possible and I need complex
    sensors and spectrometers for this. But I have also heard this can be done
    using array of sensors. 1 inductive sensor to detec metal and 1 capacitive sensor to detect non metals and metals and so on.
    Any ideas how to implement this? how capacitive sensors work? do they output different voltage when they are
    exposed to certain materials?

    I would be grateful if you point me to the right direction.