Suggestion to detect a cover shield !?

Status
Not open for further replies.
R

ric_vas

Member level 4
Joined
Jun 30, 2005
Messages
71
Helped
3
Reputation
6
Reaction score
0
Trophy points
1,286
Activity points
1,663
Hello,

Not sure if it is the right forum....anyway

I need to check if a block of money bills inside a cabinet is covered by any other material like a sheet or plastic film or if there´s nothing on top of it only the bills. The main idea it to detect someone placed a cover shield over the bill block.

I´m looking for suggestion for sensors, circuits or any technique approach to this matter.

Thanks in advance,

Ric
 

Are your bills new or old? I was thinking along the lines of using a laser/coloured light source shining at the bills at a low angle (30 degrees?) and a photo detector looking at the reflections. So if some one put a sheet of some thing that had markedly different reflectance you could see the difference from the detectors.
Frank
 

Hi chuckey!

They can be both, new or old. What kind of difference I would get from this approch? Signal Amplitude?

Thanks again.

Ric
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…