skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Processing data, for improved, accuracy, from device for measuring speed of sound in a gas

Abstract

A method, used in connection with a pulse-echo type sensor for determining the speed of sound in a gas, for improving the accuracy of speed of sound measurements. The sensor operates on the principle that speed of sound can be derived from the difference between the two-way travel time of signals reflected from two different target faces of the sensor. This time difference is derived by computing the cross correlation between the two reflections. The cross correlation function may be fitted to a parabola whose vertex represents the optimum time coordinate of the coherence peak, thereby providing an accurate measure of the two-way time diffference.

Inventors:
Issue Date:
Research Org.:
Southwest Research Institute, San Antonio, TX (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175912
Patent Number(s):
7107851
Application Number:
10/894,084
Assignee:
Southwest Research Institute
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G - PHYSICS G01 - MEASURING G01H - MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
DOE Contract Number:  
FC21-96MC33033
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Citation Formats

Owen, Thomas E. Processing data, for improved, accuracy, from device for measuring speed of sound in a gas. United States: N. p., 2006. Web.
Owen, Thomas E. Processing data, for improved, accuracy, from device for measuring speed of sound in a gas. United States.
Owen, Thomas E. Tue . "Processing data, for improved, accuracy, from device for measuring speed of sound in a gas". United States. https://www.osti.gov/servlets/purl/1175912.
@article{osti_1175912,
title = {Processing data, for improved, accuracy, from device for measuring speed of sound in a gas},
author = {Owen, Thomas E.},
abstractNote = {A method, used in connection with a pulse-echo type sensor for determining the speed of sound in a gas, for improving the accuracy of speed of sound measurements. The sensor operates on the principle that speed of sound can be derived from the difference between the two-way travel time of signals reflected from two different target faces of the sensor. This time difference is derived by computing the cross correlation between the two reflections. The cross correlation function may be fitted to a parabola whose vertex represents the optimum time coordinate of the coherence peak, thereby providing an accurate measure of the two-way time diffference.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {9}
}

Patent:

Save / Share: