Re: 10m-10cm distance measurement with 1cm accuracy at a rate of 50Hz

From: Vidar Løkken (njus_at_vidarlo.net)
Date: 03/24/05 

Date: Thu, 24 Mar 2005 19:59:51 GMT

Yugo wrote:
> Do you know any small size, light weight distance sensor with the following
> specs;
> * Range : 10cm to 1000cm (10meter )
> * Rate : 50 Hz (50 measurements/sec)
> * Accuracy : 1cm
> * Must operate on any surface (except transparent surfaces like glass)
> * Power requirement : Less than 5W
> * Weight : Lighter than 500grams
> * Vibrartion sensitivity : Must operate 0-500Hz

No, but I guess they excist. You could use RADAR, simply send out sound,
and see how long time it takes for it to return (knowing sound travels
more or less 300m/s. This would make it dependent on the altitude, but
it'd be easier to make with a microcontroller than light/radio based
RADAR, since light would require really really good timing... 

-- 
MVH,
Vidar
www.bitsex.net