Technical Discussions: Re: Ultrasonic interference pattern recognition products

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Re: Ultrasonic interference pattern recognition products
Posted by: Martin Nyman , E-mail: cii99mn1_nospam_@i.lth.se, on December 08, 2004 at 10:53 :
In Reply to: Re: Ultrasonic interference pattern recognition products posted by : David Forsyth , E-mail: david.forsyth@nrc-cnrc.gc.ca, on December 07, 2004 at 19:21 :
Thank you for your quick reply,
The reason for using ultrasonic equipment would mainly be the price, I don't know the exact cost of the systems you mentioned but the ones I have seen are fairly expensive (1000$ and upwards). We need a cheaper solution. Also, we only need a resolution of 0.3mm or better.

----------- Start Original Message -----------
: Without knowing everything about your application, I may be missing some important reason to use UT. However, for accurate and practical distance measurements, we have used these sensors:
: http://www.keyence.com/products/vision/laser/lk/lk.php
: and I am sure there are other vendors of similar products.
: Dave.
: : Hi,
: : I'm looking for manufacturers of systems for automatic recognition/control of objects. What we want to do is to check whether a screw is fully down or not. (Measurement of the distance between the top of the screw and the surface which it is screwed against, preferably with some kind of interference pattern recognition.)
: : Thanks in advance,
: : Martin Nyman
------------ End Original Message ------------

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----------- Start Original Message ----------- : Thank you for your quick reply, : The reason for using ultrasonic equipment would mainly be the price, I don't know the exact cost of the systems you mentioned but the ones I have seen are fairly expensive (1000$ and upwards). We need a cheaper solution. Also, we only need a resolution of 0.3mm or better. : : : Without knowing everything about your application, I may be missing some important reason to use UT. However, for accurate and practical distance measurements, we have used these sensors: : : http://www.keyence.com/products/vision/laser/lk/lk.php : : and I am sure there are other vendors of similar products. : : Dave. : : : Hi, : : : I'm looking for manufacturers of systems for automatic recognition/control of objects. What we want to do is to check whether a screw is fully down or not. (Measurement of the distance between the top of the screw and the surface which it is screwed against, preferably with some kind of interference pattern recognition.) : : : Thanks in advance, : : : Martin Nyman ------------ End Original Message ------------

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