Safe & Sound Wearables - Smart Safety Glasses #1: Introduction"

RE: Safe & Sound Wearables - Smart Safety Glasses #1: Introduction"

DAB — Sun, 26 Feb 2017 19:20:48 GMT

Great project idea.

There are number of possible solutions.

I would consider using an RPI with a camera that could do facial recognition and identify when the operator is not wearing the safety glasses appropriately.

I suspect visual confirmation is the only reliable way to make sure.

DAB

RE: Safe & Sound Wearables - Smart Safety Glasses #1: Introduction"

msimon — Sun, 26 Feb 2017 15:35:27 GMT

I think the combination of #2 and #3 will work. If you think you have time, you can check the simple form of brain activity.

Mehmet

RE: Safe & Sound Wearables - Smart Safety Glasses #1: Introduction"

balearicdynamics — Sun, 26 Feb 2017 08:29:33 GMT

Hello!

according with what [mention:8fb233e8974445138ef0af2b63b49f94:e9ed411860ed4f2ba0265705b8793d05] says the glasses wearing detection is the most interesting and difficult challenge in this project. Seeing your design in this proof of concept explanation I would like suggest you a possible method that probably it is the worth to investigate on it. I tried to answer to the question:

What are the conditions that says the safety glasses (with the elastic band on the back) are correctly in place without involving too much heavy and disturbing electronics and sensors on them?

The idea is almost easy, IMHO; three force sensors that self-calibrate the first time the safety eyeglasses are used able to detect the tension and its direction on both sides of the glasses, just where the elastic band is attached. With these three simple values (one on every side, I mean six total force sensors) we know if the glasses are up, but not on top of the head leaving the eyes under risk and not on any other wrong position than correctly in place protecting eyes. A very small couple of board acting as the elastic band joint with the glasses can provide a lot of information: tension value, direction, position change and so on.

What do you think ? Enrico

RE: Safe & Sound Wearables - Smart Safety Glasses #1: Introduction"

mcb1 — Sun, 26 Feb 2017 04:49:14 GMT

[mention:12b3a4a265f24213a0e2dc827646e77f:e9ed411860ed4f2ba0265705b8793d05]

biggest challenge of the project will be to reliably detect when an operator is wearing the safety glasses

You're quite right, but the concept and implementation of the concept is the important part of this design IMO.

Perfecting the actual sensing is something that can be perfected later, as long as you recognise that it can be fooled and try to help prevent it, you're unlikely to be judged poorly.

In theory most power tools should require Ear Muffs, and I wonder if you can't combine RFID with the tags being in the ear muffs.

If someone wanted to fool it then you'd need to wire the glasses and have the ear muffs close as well.

Good luck sounds like a good idea.

Mark