So I need to be able to map where pressure is applied by the foot. I know they have those DR Scholl's machines that map feet, but they claim to use "2000 sensors". I don't need to map the foot to that level of specification. What I'm looking for is more like, where pressure is being applied and then if the pressure is moved from side to side, kind of like if the person applying the pressure swayed, reapplying pressure to the outside of the foot then adjusting it back to center or maybe to the opposite outside of their foot.
Now here's where I'm having trouble I was reading about different kinds of load cells, and it seems to me like I need a Piezoelectric type load cell only because the pressure will be dynamic. But a strain gauge cell also sounds like it would be applicable, because it's malleable. Can anyone point me in the right direction of which load cell I'm looking for.
Also, out of whichever cell is suggested, I have some follow up questions. How thick can the surface material be between the person's foot, and the load cell. It has to be a malleable surface of course. However a user of this product would be using a shoe'd foot. So I'm guessing the sensor must have a high sensitivity for it to read pressure shifts of a ~ 180 lb human through a shoe and then another surface maybe a half inch thick. Any thoughts on that? Thanks guys, I really do appreciate any help!