3 ms·
Paper (linked in article) is here: https://homes.cs.washington.edu/~gshyam/Papers/powifi.pdf https://homes.cs.washington.edu/~gshyam/Papers/powifi.pdf Disregar
by rubidium 11y ago
Paper (linked in article) is here: https://homes.cs.washington.edu/~gshyam/Papers/powifi.pdf https://homes.cs.washington.edu/~gshyam/Papers/powifi.pdf
Disregarding the usual HN snark for media terms ("game-changing") and the usual criticism ("been done before", "won't be effective"), this is actually really cool. If we look at all the innovations in the past year, this is a pretty dang neat one.
They mention Tesla in the opening line of their paper. In short, the biggest innovation they came up with was solving the mismatch of Wifi operation and optimal power transmission. Read the paper; it's quite good stuff.
- jacquesm 11y agoIt is interesting and could be a game changer for the 'internet-of-things'. WiFi is everywhere and just to be able to run a device a couple of seconds per day without having wires attached to it could enable a huge number of applications.
- violentvinyl 11y agoThis got me excited about the idea. Like many others my first thought was that it can't be nearly efficient enough to charge my phone, but I hadn't even considered all the little low power sensors I could place around the house that I wouldn't bother with if they all needed to be wired into mains power. Think window break and door lock sensors, etc.
- jacquesm 11y agoYes, exactly. Charge slowly and discharge fast.
- TeMPOraL 11y ago> Think window break and door lock sensors, etc. A fun tech I had in my hands once that I haven't seen being use anywhere is turning kinetic energy into power. I've played with a light switch that can generate enough energy from you just pressing them, that they can boot up an internal uC, a radio, and then send a signal. The device had a typical home-automation range of several meters. I've been told that there are versions mounted into window handles, etc.
- evook 11y agoIt's not "game-changing" nor "interesting", because it's "been done before" and "won't be effective". Sorry, had to be done, because tit's the truth.