Seeking high-resolution ultrasound system

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Article #896

#896

From: Ralph Siemsen
Date: Tue, 10 Nov 1992 04:22

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We're looking for some ultrasonic (or otherwise) detector to measure
distances of 5-15 cm to an accuracy of +- 0.5cm or better.

The intended application is to measure the angle (by triangulation)
of a monopod robot relative to the ground. We have considered
accelerometers, but the bouncing action of the robot makes them
innefective. Commercial angle sensors are expensive ($1500) and we
really only care about a small range of angles (20 degrees), rather
than the full 180 degrees that most commercial units offer.

So it would be quite easy to measure the distance to the ground from
a platform atop the robot. All we need is a nice sensor.

Perhaps it is possible to adapt the Polaroid Ultrasonic Kit for use over
this shorter range, and improve the sensitivity somehow. Anyone have
any experience?

Any ideas would be greatly appreciated.

Ralph Siemsen / Engineering Physics / Queen's University at Kingston
E-mail:  <3034871@QUCDN.QueensU.CA>

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Path: arc1-ca.pugleaf.net!sparky!uunet!utcsri!torn!news.ccs.queensu.ca!qucdn!3034871
Organization: Queen's University at Kingston
Date: Tue, 10 Nov 1992 00:22:52 EDT
From: Ralph Siemsen <3034871@QUCDN.QueensU.CA>
Message-ID: <92315.0022523034871@QUCDN.QueensU.CA>
Newsgroups: comp.robotics
Subject: Seeking high-resolution ultrasound system
Lines: 21