What sensor can be used to constantly measure the curvature of the spine?

Question

Circuit design

I decided once and for all to accustom myself not to break the spine in the lower back (when you sit on the sacrum, lounging). To do this, I want to assemble a device that just a little - slightly shocks. Just a little - this is an excess of the bend of the spine in the lower back.
Something cloudy looms in my head, like a patch with a sensor inside. The question is what kind of sensor ... Or tell me an alternative, as you would do.

Answer 1

Sensor, for example, this Flex Sensor. When bending, the resistance changes.

Answer 2

Share the design of the device when you assemble

Answer 3

but in principle, in the area of ​​\u200b\u200bthe coccyx, attach one end of the cord, on the neck - the other. When bent, the cord is stretched and pulls out, for example, a contact.

Answer 4

Hide post.
Poor students...

Answer 5

For a long time I saw on TV in “very skillful hands” how Bakhmetyev collected such crap using a sensor from a musical postcard! When bending the back, heavy metal about bunnies began to play.

Answer 6

Are you afraid of the nervous system?

Answer 7

A long time ago, I saw somewhere a simple contraption with a squeaker for posture control: a medallion on a string that hangs around the neck. When the back is even, it touches the chest, and if you stoop, it hangs and squeaks.

Answer 8

Or maybe someone saw such a device on sale: you set the time and, for example, every 5 minutes it either makes a small electric shock or vibrates?

Answer 9

I, too, fall apart during the working day, slide down from my chair and at the end often sit on the sacrum, but I don’t see this as a particular problem - probably my back gets tired of sitting straight.