Measurement of ultrasonic velocity with improved accuracy in pulse echo setup.
Rev Sci Instrum
; 78(8): 085104, 2007 Aug.
Article
in En
| MEDLINE
| ID: mdl-17764352
ABSTRACT
In the present work a personal computer based circuit adopted in pulseecho setup has been developed for the measurement of time-of-flight between the two successive echoes using a differential time measurement with a 16 bit counter and an external clock frequency of 32 MHz. A control program is developed in C to display the time of flight and wave propagation velocity on a user screen. The technique, so developed, minimizes the errors in time delay measurements due to the variation in threshold trigger points of echoes and improves the ultrasonic velocity measurement.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Rheology
/
Signal Processing, Computer-Assisted
/
Ultrasonography
Type of study:
Diagnostic_studies
Language:
En
Journal:
Rev Sci Instrum
Year:
2007
Document type:
Article
Affiliation country:
India