Ultrasound wave to misure displacement

[Skatto]

Hello,
i'm a italian engineer and i'm developing a project to measure the distance between a ultrasonic sensor trasmitter and a receiver.
The range distance 5-10 m, pressure and temperature costants.
Could you help me to find any kind of documentation about this problem (for ex. precision, methods to analize the signal, and so on) ?
My background on acoustics is limited.
Thank you.

 

[therealkilkenny]

Hi Skatto,

I am working in Ultrasonics at the University of Sheffield. I need more information. What material are you looking through? What resolution do you want? Is it just distance that you are looking at?
The material that you are looking through will have an associated acoustic attenuation that will determine the distance that you are able to look though. I suspect that at that kind of distance you are looking at a very low frequency transducer, and not particularily good resolution. Why use ultrasound?
Regards.

 

[Skatto]

Hi therealkilkenny ,
The material is air and i'm looking for more accurate is possible. I'm trying to improve the precision in different ways. Have you any suggest?
The distance range is minimun 3 meter and max 10 meter. My goal is to realize a device with 3 or more receivers and one emitter to reduce the error.
What alternative have i ? The ultrasound is cheap and it has a good range. The only problem is the resolution, i think.
With radio pulse emitter i should have the same resolution problem.
thank you for your help.

 

[unclesyd]

The Polaroid Company did have a division that promoted distance measuring with ultrasound. .
Here is the websites that use Polaroid.

http://www.polaroid-oem.com/products/ultrasonic.htm

This site list an outlet in Italy

http://www.senscomp.com/ultrasonic.htm

 

[Skatto]

Thanks unclesyd,
i watched the site but there are a lot of different series. What 's the best one for my goal?
There are alternative to obtain a measure of distance with very high precision (.1 mm)?
Regards.