LDC1000 for linear displacement application

Panson Poon

I am thinking to use LDC1000 to measure linear displacement (<= 10 mm) of an conductive object. Is the inductance change linearly proportional to the distance between sensing coil and the object?

over 11 years ago

0 Natallia Holubeva1 over 11 years ago

TI__Expert 6550 points

Hello Panson,

The results show that data is somewhat monotonic and linear. To achieve perfect linearity, it is possible to modify the target shape from a triangle to a different shape that results in a linear output. However, it‘s usually easier to linearize the data output in software.The test data to your question can be found here:

http://e2e.ti.com/blogs_/b/analogwire/archive/2014/07/01/inductive-sensing-linear-position-sensing-part-1.aspx

http://e2e.ti.com/blogs_/b/analogwire/archive/2014/07/08/inductive-sensing-linear-position-sensing-part-2.aspx

Best Regards,

Natallia Holubeva

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LDC1000 for linear displacement application