Aspects of reliable ultrasonic sensor system design

Yongtae Do

doi:10.1117/12.298012

Abstract

Techniques for increasing the reliability of ultrasonic range measurements are described in this paper. Measurement errors are reduced considering two dominant error sources; environmental instability and random noise. To compensate for alterations in measurements due to surrounding conditions, a small reflector is placed at a known distance in front of the sensor and the measurements of the known distance are used as the reference for correcting the measurements of unknown distances. The conditions to prefer this way of compensation is determined by analyzing probable errors of the measurements. The reliability is increased further by tackling random noise with receivers employed redundantly. Assuming a jointly Gaussian distribution, signals of the receivers are combined to get statistically more accurate estimates. An experimental system is built with 40kHz transducers and the results show considerable reduction of measurement errors.

Citation Download Citation

Yongtae Do, Yongtae Do, } "Aspects of reliable ultrasonic sensor system design", Proc. SPIE 3201, Sensors and Controls for Advanced Manufacturing, (2 January 1998); doi: 10.1117/12.298012; https://doi.org/10.1117/12.298012

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years