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Velocity of sample

John Docherty
Prodigy 70 points

What to do about the change of impedence do to  the velocity of the sample regardless of  distance.

  • 0
    TI__Intellectual 1690 points

    Hello John Docherty,

    Do you want to measure the speed of a moving object keeping the distance between the sensor and target fixed?

    Can you provide more information on your application? Thanks.

    -Best Regards,

     Suhas R C

  • 0 in reply to Suhas Raja Chandragupta55
    Prodigy 70 points

    I want to measure tension in a bicycle chain indirectly by measuring  the amount the chain rides up on the sprockets. it should be about a difference of 0.3mm or less. but the change in inductance caused by the difference in the speeds of the chain overwhelms the difference due to height. although i will know the speed of the chain by counting links .

  • 0 in reply to John Docherty
    Prodigy 70 points

    Or am i completly wrong and the change in values is actually caused by the chain moving more than I thought  or some other reason not related to speed .  what Im asking is the sensor oblivious to speed in a homogenious   material zooming past  but maintaining a constant distance from the  ldc1000.

  • 0 in reply to John Docherty
    TI__Intellectual 1690 points

    John Docherty,

    The change in amount of metal over the sensor over time can cause change in inductance. Also, if there is any difference in distance between the sensor and the target, that can also cause change in inductance.

    In your case, if the distance is maintained constant, then you will be measuring the speed due to change in inductance (as there will be break in bicycle chain). Also, make sure there is no other metal interference happening in the vicinity of the sensor. Can you provide more information by providing a picture of your system?

    -Best Regards,

     Suhas R C