The calculation of the echo energy transmission coefficient in ultrasonic liquid level testing
HE Xi-ping1, ZHANG Feng1, LI Bin2, ZHANG Dan1
(1 Physical Institute of Shaanxi Province, Xi′an 710062, Shaanxi, China; 2 College of Marine Engineering, Northwestern Polytechnical University, Xi′an 710072, Shaanxi, China)
Abstract:
According to the transfer matrix, the expression of the echo energy transmission coefficient come from multiple mediums in ultrasonic liquid level testing is derived. In a certain medium structure, the echo energy transmission coefficient changing with the ultrasonic testing frequency is studied and the maximum magnitude is obtained. The result shows that in order to obtain the strong echo signal, a suitable selection of the ultrasonic transducer operating frequency is necessary.
KeyWords:
echo energy; transmission coefficient; echo signal; testing frequency
