---Video Overview---
Join me as I build and test out the performance of an electronic displacement sensor. It uses a 3d printed, plastic flexure to guide the motion and an opto-interrupter to get that motion into an electrical signal. I set out to design it to get digital data collection on tasks where I've been using a dial indicator and notebook to date.
Based on my testing, it is repeatable to better than 5 microns (it's actually closer to 2 microns based on the data, but I added some head room to account for some of the drift and such that wasn't captured over the limited measurement time.)
To help visualize the movement of the flexure, I show a couple of fusion 360 simulations.
---Build yourself one!---
If you'd like to build one, links to the models along with the rest of the details are all here: jfs-agri.com/index.php/bubsbu...
If you have a resin printer (you could try it with FDM, but no promises), and want to try out a different take on this same basic concept. A while back I also made this displacement sensor using diaphram flexures instead of the leaf flexures shown in the video. I haven't tested this one in detail, but I would expect it to perform similarly, if not a tad better: www.printables.com/model/4432...
---Alternate use case - Displacement sensor as Load Cell ---
These sensors can also be used as a load cell. I'm working on a project currently using the same sensors shown to make a mass balance. It's a work in progress, but additional info here: jfs-agri.com/index.php/bubsbu...
17 мар 2024