AVR-Chat

Alex and the other guy who both said weigh them were correct.

Weigh them.

M5



--- On Tue, 1/13/09, Enki <enkitec@gmail.com> wrote:
From: Enki <enkitec@gmail.com>
Subject: [AVR-Chat] Liquid level measurement
To: AVR-Chat@yahoogroups.com
Date: Tuesday, January 13, 2009, 8:43 PM










    
            

	I need to measure the liquid level inside a transparent plastic 

bottle. I need to know when the liquid is below half bottle height and 

when the bottle is almost empty. Just two steps.

	The plastic bottle measures 12cm high x 8cm x 3cm.

	I'm not allowed to insert any probe in the bottle.

	There are four bottles side by side.



	I was thinking on metal plates mounted on each side of each bottle 

and using the capacitance method.



	Or a B&W video camera and some processing. I could generate four 

sample windows on each video line and integrate the samples. The four 

integrated signals would represent the liquid level on each bottle.

	An ATMEGA48 would do the level measurement with four ADCs.



	Comments, please.



	Thanks,

	Mark Jordan




      

    
    
	
	 
	
	








	


	
	


      

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