[clug] [OT] uBeam - wireless charging stations (ultrasonics, 50kHz)

Arjen Lentz arjen at lentz.com.au
Thu Jun 2 19:46:45 MDT 2011

Hi Jmi, all

> cooking everyone in the room?

Ya, having looked at the video, it seems like an atrociously bad idea for that reason and more.

See with an induction plate you can detect the presence of a device and regulate and even switch the system on/off. With the uBeam, it'd have to be on all the time and it's putting energy (in the form of the ultrasound waves) out all the time in to the room. The transmitter can't tell when there's an actual receiver, so it's a huge waste of energy for most of the time.

I think there are other issues with pumping lots of ultrasound into a room, but on the basis of energy wastage alone this is a serious problem. Not all tech is good.

Arjen Lentz, Exec.Director @ Open Query (http://openquery.com)
Remote expertise & maintenance for MySQL/MariaDB server environments.

Follow us at http://openquery.com/blog/ & http://twitter.com/openquery

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