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Title: Method of making self-calibrated displacement measurements

Abstract

A method for monitoring the displacement of an object having an acoustically reflective surface at least partially submerged in an acoustically conductive medium. The reflective surface is designed to have a stepped interface responsive to an incident acoustic pulse to provide separate discrete reflected pulses to a receiving transducer. The difference in the time of flight of the reflected acoustic signals corresponds to the known step height and the time of travel of the signals to the receiving transducer provides a measure of the displacement of the object. Accordingly, the reference step length enables simultaneous calibration of each displacement measurement.

Inventors:
 [1]
  1. Richland, WA
Publication Date:
Research Org.:
Hanford Engineering Development Lab., Richland, Wash. (USA)
OSTI Identifier:
862768
Patent Number(s):
US 4008455
Assignee:
Westinghouse Electric Corporation (Pittsburgh, PA)
DOE Contract Number:  
AT(45-1-)2170
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; self-calibrated; displacement; measurements; monitoring; acoustically; reflective; surface; partially; submerged; conductive; medium; designed; stepped; interface; responsive; incident; acoustic; pulse; provide; separate; discrete; reflected; pulses; receiving; transducer; difference; time; flight; signals; corresponds; step; height; travel; provides; measure; accordingly; reference; length; enables; simultaneous; calibration; measurement; reflected pulses; acoustic signals; reflective surface; conductive medium; acoustic signal; acoustic pulse; provide separate; receiving transducer; partially submerged; reflected pulse; acoustically conductive; /376/73/367/

Citation Formats

Pedersen, Herbert N. Method of making self-calibrated displacement measurements. United States: N. p., 1977. Web.
Pedersen, Herbert N. Method of making self-calibrated displacement measurements. United States.
Pedersen, Herbert N. Sat . "Method of making self-calibrated displacement measurements". United States. https://www.osti.gov/servlets/purl/862768.
@article{osti_862768,
title = {Method of making self-calibrated displacement measurements},
author = {Pedersen, Herbert N},
abstractNote = {A method for monitoring the displacement of an object having an acoustically reflective surface at least partially submerged in an acoustically conductive medium. The reflective surface is designed to have a stepped interface responsive to an incident acoustic pulse to provide separate discrete reflected pulses to a receiving transducer. The difference in the time of flight of the reflected acoustic signals corresponds to the known step height and the time of travel of the signals to the receiving transducer provides a measure of the displacement of the object. Accordingly, the reference step length enables simultaneous calibration of each displacement measurement.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {1}
}

Patent:

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