Upfront let me say I know very little of LVDTs and have never used them, but they are a very elegant way of sensing linear displacement.
When you say they are inherently frictionless....although simple, they have moving parts so there must be some friction? And in wet/icy conditions they could get frozen?
Were I to encounter the problems of crosstalk I would try something like using different excitation frequencies for each LVDT, and have a narrowband filter in each signal conditioner. Are solutions like this used? But Alliance's solution is also clever. And I suspect thay know more than me about these things :-)
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Are the design challenges the same as with embedded systems, but with a little developer- and IT-skills added in? What do engineers need to know? Rick Merritt talks with two experts about the tools and best options for designing IoT devices in 2016. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.