Title :
Experimental determination of the reflective index of ultrasound waves from homogenous mediums by means of piezoelectric transducers
Author :
Simeonov, Ivan S.
Author_Institution :
Dept. Comput. Syst. & Technol., Tech. Univ. of Gabrovo, Bulgaria
Abstract :
A method of approach for determination of the reflective index m of homogenous mediums by measuring the amplitude of ultrasound waves with a work frequency 40 kHz is presented in the paper. Ultrasound piezoceramic transducers type UST40T and UST40R are used as a transmitter and receiver. Their work is based on the direct and reverse piezoeffect. The excitation of the transducers is performed with impulse-modulated signals, formed by the microcontroller PIC16F84A.
Keywords :
microcontrollers; piezoceramics; piezoelectric transducers; pulse modulation; ultrasonic transducers; ultrasonic waves; UST40R receiver; UST40T transmitter; amplitude measurement; homogenous medium; impulse-modulated signals; microcontroller; reflective index; ultrasound piezoceramic transducers; ultrasound waves; Acoustic refraction; Piezoelectric materials; Piezoelectric transducers; Process control; Surface acoustic waves; Surface impedance; Transmitters; Ultrasonic imaging; Ultrasonic transducers; Ultrasonic variables measurement;
Conference_Titel :
Telecommunications in Modern Satellite, Cable and Broadcasting Service, 2003. TELSIKS 2003. 6th International Conference on
Print_ISBN :
0-7803-7963-2
DOI :
10.1109/TELSKS.2003.1246351
