Slashdot Technology Story | Best Man Rigs Newlyweds’ Bed To Tweet During Sex
So how does the device work? For instance, how are these weight measurements being made? If you just put a load cell under the middle of the bed, it isn’t going to measure the total mass. You’d need to use 4 load cells - one at each corner of the mattress. And the Mattress has to have a frame, like a box spring. Or you could use 1 load cell, but you’d have to build a special framework under the bed for it.
The next part is how do you translate these weight and vibration readings into a “sex detector”. Where do you set the threshold, such that if someone just rolls over or even flops on the bed it doesn’t set it off? Lots of ordinary acts, from scratching an itch to sitting up might create vibrations in the system that would fool a simple script into detecting “sex”.
Plus, some sex acts create a lot more vibration that others. Position also matters quite a bit.
This is an interesting problem. I think it’s solvable, to a reasonable level of accuracy. But you’d have to calibrate the system, which would require something that most slashdotters don’t have access to….
The sex detection part is some fairly trivial signal processing. You need a band pass filter with a passband of about 0.5-3 Hz (at a guess; better numbers exist, but I haven’t tried googling them). Then you need to detect extended signal within that band; there are a variety of options for this, any of which are likely to work.
Heh.
Hmm (Score:5, Funny)