title: Measurement of ultrasonic velocity with improved accuracy in pulse echo setup.
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.
authors.affiliation: Department of Electronics, RSTM Nagpur University, Nagpur, Maharastra, India.
authors.forename: S
authors.initials: S
authors.lastname: Rajagopalan
authors.forename: S J
authors.initials: SJ
authors.lastname: Sharma
authors.forename: P K
authors.initials: PK
authors.lastname: Dubey
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D015203:Reproducibility of Results; D012212:Rheology / Q000295:instrumentation* / Q000379:methods; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014463:Ultrasonography / Q000295:instrumentation* / Q000379:methods