My research group and I are developing a machine to diagnose early stage knee osteoarthritis. It is essentially a inclined leg-press and we need to know the displacement of the plate you push. For this we need very high accuracy (preferrably <5 mm) over approximately 1 meter travel. Budget is around 150 £, but is flexible.
I have done a lot of searching for cheap common arduino sensors, but they all seem to have too low accuracy (Best i found was +- 2.5 cm, which is not nearly enough. I think it was the lidar).
I have also looked at industrial-grade laser sensors, which provide me the accuracy i require (ex. keyence IL-600), but i have a limited knowledge on the connective possibilities with these types and the arduino. Is is possible to use this kind of sensor with an arduino - or is there any simpler way to record output from this? Best case scenario would be to use matlab, if possible!
Any other ideas and poosibilities are most welcome!
Best Regards Alex Dalsgaard