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Author Topic: Sensor  (Read 1874 times)

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Offline fallenangelTopic starter

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Sensor
« on: September 12, 2008, 12:21:30 PM »
Which would be the best sensor to detect non-conductive materials such as glass and plastic?

Offline ArcMan

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Re: Sensor
« Reply #1 on: September 12, 2008, 12:49:01 PM »
That depends on the application.  Is it for collision avoidance?  If so, ultrasonic would be a good choice.  Of course, contact sensors like limit switches could be used.

Offline fallenangelTopic starter

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Re: Sensor
« Reply #2 on: September 12, 2008, 06:49:48 PM »
It's not to avoid collision. I need to detect plastic bottles and glass bottles in a close range field, about 10'x10' and be able to differentiate between the two. Someone had suggested an optical sensor, but I haven't seen any that will meet the requirement I'm looking for.

Offline Ro-Bot-X

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Re: Sensor
« Reply #3 on: September 12, 2008, 07:36:56 PM »
Get a camera on the robot. Try the Blackfin camera.
Check out the uBotino robot controller!

Offline Tsukubadaisei

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Re: Sensor
« Reply #4 on: September 12, 2008, 11:14:23 PM »
depends on the plastic and glasses. What color are they? Are they transparent?

A camera might be the best option. Light sensors can work depending on the material.
A.I.(yes those are my initials)

Offline fallenangelTopic starter

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Re: Sensor
« Reply #5 on: September 13, 2008, 11:33:49 AM »
Yes, they are transparent. They are coke products actually. I'll see what I can do with a camera.

Offline ArcMan

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Re: Sensor
« Reply #6 on: September 13, 2008, 07:57:09 PM »
If you go with the camera solution, check out Cognex if you have alot of money available.

Offline Admin

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Re: Sensor
« Reply #7 on: September 16, 2008, 10:48:25 AM »

Offline Gertlex

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Re: Sensor
« Reply #8 on: September 16, 2008, 01:24:12 PM »
A camera seems excessive.

You could certainly use a couple of metal probes to touch the item and see if it conducts...  Making that reliable would be the tricky part, though. (And this assumes touching the item isn't a problem)
I

 


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