Kinda crazy that it worked but got no commercial interest. Hopefully someone suitable here sees it and can intervene Does it also work through other materials. i.e. through a drywall etc.
I built a mmWave material classification radar (2025)
21–30 of 61 posts
Re: I built a mmWave material classification radar (2025)
#22Re: I built a mmWave material classification radar (2025)
#23Kinda crazy that it worked but got no commercial interest. Hopefully someone suitable here sees it and can intervene Does it also work through other materials. i.e. through a drywall etc.
Like if you trained a machine learning algorithm to differentiate 10 samples of asbestos containing material from 10 non-asbestos containing materials I wouldn't believe it would work with all the many kinds of materials you would find out in the field in all the configurations that are out there.
All that talk of how the electromagnetic properties of asbestos-containing materials are different are pretty handwavy and lack a theoretical explanation of where the dividing line between different materials ought to be. Overall it strikes me as the kind of half-baked idea that people suddenly feel empowered to do thanks to AI.
Re: I built a mmWave material classification radar (2025)
#24Kinda crazy that it worked but got no commercial interest. Hopefully someone suitable here sees it and can intervene Does it also work through other materials. i.e. through a drywall etc.
It's a cool technology, but for it to gain commercial interest it needs to solve a problem better than the status quo. What problem is it solving and for who? If I was to buy that mmwave radar device it would probably cost more than the $60 test, and I would want assurances that it is as accurate as existing tests.
Re: I built a mmWave material classification radar (2025)
#25My dream (actually one of them) is to one day build a wall-e that can collect trash from the environment. This is exactly what I would need for it!
Re: I built a mmWave material classification radar (2025)
#26Unless I missed something, it seems the "POC" device still made no effort to address this, which is the core feature — it just demonstrated classifying some other common materials. If that's true then the conclusions make no sense to me - why would customers be lining up if you still haven't proven the actual concept?
Re: I built a mmWave material classification radar (2025)
#27Very cool! Six years ago I worked on a mmWave (76-81GHz) imaging radar with a Rotman lens Tx and Rx. Designed as a LiDAR replacement, but we could see pipes in walls, or detect concealed weapons at ~1km.
Isnt mmWave pretty similar (in theory) to short-ish range wireless directional antennas? What people used to call point to point "microwave" transmission?
Crazy idea but could your mmWave radar hardware also be (not simultanouslyl) used to transmit data? No idea what a Rotman Lens is but I would imagine that maybe it could be useful for transmission as well.
Re: I built a mmWave material classification radar (2025)
#28My netlify crashed fixing the website rn
just fixed it, hope it works
Re: I built a mmWave material classification radar (2025)
#29> however the big question to answer was : is the radar sensitive enough to tell the difference consistently between a material, and it's same counterpart with asbestos shards and at what concentration ? Unless I missed something, it seems the "POC" device still made no effort to address this, which is the core feature — it just demonstrated classifying some other common materials. If that's true then the conclusions…
(Of course, the place I've dealt with this the most was a former post office building from the late 1930s - we didn't really need tests, a historian would probably have just said "of course you have asbestos" :-) It does expose an interesting problem with the labeling part, though: USPS as an ancient federal agency has its own rules for things and had a distinct asbestos markers - an A in a point-down triangle - which we fortunately found documentation for, it isn't public record.)
Re: I built a mmWave material classification radar (2025)
#30Very cool! Six years ago I worked on a mmWave (76-81GHz) imaging radar with a Rotman lens Tx and Rx. Designed as a LiDAR replacement, but we could see pipes in walls, or detect concealed weapons at ~1km.
Super cool. Didn't even know mmWave was used for radar and imaging techniques! Isnt mmWave pretty similar (in theory) to short-ish range wireless directional antennas? What people used to call point to point "microwave" transmission? Crazy idea but could your mmWave radar hardware also be (not simultanouslyl) used to transmit data? No idea what a Rotman Lens is but I would imagine that maybe it could be useful for tr…