Excitation Characteristics of Ultrasonic Probe

the quality of ultrasonic transducer has a direct impact on the performance of ultrasonic flowmeter, the ultrasonic transducer function is converting the electrical signal to mechanical signal and mechanical signal to electrical signal, this process realizes the generation and reception of ultrasonic waves. The electrical signals of the excitation transducer are different, causing the effect of the transmitting transducer to be different. Based on different excitation signals, the transmitting transducer is urged to study the difference of receiving a signal under various excitations. At the same time, a COMSOL simulation method was proposed to simulate different excitation methods for single-channel ultrasound probes, and the difference in sound field distribution during transmission. Experiments verify the rationality of simulation results. The excitation signal is selected as a square wave, sine wave, with different burst number and burst time interval as the signal entry. Discuss the parameters such as the propagation trajectory, propagation time and sound pressure distribution of ultrasonic waves with the variation of excitation mode, and analyze its influence on the received signal.