[Force sensor resistance(FSR) sensor] characteristic curve clarification



  • Hello all,

    I am using Interlink electronics FSR sensors for my project which varies resistance when force is applied, while going through datasheet i came across the characteristic curve of the sensor which is as follows ;

    0_1511472674383_pic.PNG

    So my question is that , Force (g) on x axis is Newton ? or only weight in gram which can be converted into force using F =ma formula ?

    Your help in this regard will be highly appreciated.

    Regards,

    Saad Abbas


  • Mod

    I'd say grams, but did you try to see what results you get?



  • @gohan said in [Force sensor resistance(FSR) sensor] characteristic curve clarification:

    but did you try to see what results you get

    I actually applied the load of 5kg on the sensor then got resistance as output.

    But i am just confused with this chart at x-axis whether it is weight which can be converted into force using F = ma or it is Force ?



  • I would agree the graph shows resistance vs. grams. It looks your 5kg mass should read about .5 ohms. So if you want force (or wieght) multiply 5 x 9.81. The nice thing about this is f=ma is a linear function so you can make a similar graph for resisitance vs. force.

    The force value appears to be logarithmic compared to the resistance read this is where the heavy math is, reporting force or mass is a matter of constants. Hopefully the data sheet gives the formula.



  • @wallyllama Thankyou for your reply. Actually only voltage conversion formula is given in the data sheet , here is the following link for the data sheet :

    https://www.interlinkelectronics.com/datasheets/Datasheet_FSR.pdf

    But i again thankyou for your time that you clarified my confusion . 🙂


 

267
Online

7.8k
Users

8.7k
Topics

93.0k
Posts