Hi there, I am currently working on a project where I need to somehow register when a bubble hits a surface. The idea is very simple, there is a bubble machine on one side of a room, and on the other side of the room is a surface with a sensor of some description on it. I need to know which sensor would be best for registering a reading either analog or digital, that tells me if the bubble has hit and burst off that surface. I have tried using a rain sensor module, but the problem is if it gets wet it is unreliable at reading the next bubble that hits and so I need something that can continuously register when a bubble hits. Wanted to ask here, so I'm not buying lots of different sensors. Would an ultrasonic sensor work for this??? I need it to be precise and cover a surface area of around 1 meter square. Any suggestions would be greatly appreciated!!! Let me know if I've not been clear enough in my description. Many thanks.
You are confusing me with your description. On the one hand you want to know when a bubble hits the surface, but on the other hand you want ot know when the bubble bursts. Which is the real goal?
Paul
What is the purpose of this device?
A link to a YouTube video showing the surface and bubbles would help people brainstorm sensors.
You could try an RPi with camera and OpenCV software.
Or, if the bubbles come slowly enough and there is no other ambient noise, perhaps you could detect the sound of the bursts.
A laser beam reflected from a liquid surface would be deflected by emerging bubbles.
Are you thinking that there might be a commercial sensor for such a quirky application?
I was hoping the OP would clarify. I also was thinking a sensitive mike and low noise amp would hear the popping.
Then light reflected off the surface you be reduced when a bubble came to the surface.
Both are possible.
Paul
Paul_KD7HB:
You are confusing me with your description. On the one hand you want to know when a bubble hits the surface, but on the other hand you want ot know when the bubble bursts. Which is the real goal?Paul
Hey, so they are soap bubbles, so they will indeed burst on impact. So hit the surface/burst would be the same thing. Cheers
DaveEvans:
What is the purpose of this device?A link to a YouTube video showing the surface and bubbles would help people brainstorm sensors.
You could try an RPi with camera and OpenCV software.
Or, if the bubbles come slowly enough and there is no other ambient noise, perhaps you could detect the sound of the bursts.
I should have been more detailed. I am a sound artist and I am working on sonifiying bubbles when they hit/burst off a surface. I would therefore not be able to use sound for sensing them actually as there will be interference
Soap contains an excess of oils and will quickly produce a surface scum. So reflectivity changes won't work.
Paul