Ultrasonic transducer driving method and system

The invention relates to the technical field of ultrasonic sensors, in particular to an ultrasonic transducer driving method and system. The ultrasonic transducer driving method comprises the following steps: driving to transmit an ultrasonic signal through a driving signal of a first frequency; receiving and processing a target echo signal generated by the ultrasonic signal, and judging whether the target echo signal exists in the signal; when it is judged that no obstacle is detected, the driving signal is gradually adjusted from the first frequency to the second frequency in the process of continuously transmitting the ultrasonic signal; when it is judged that the obstacle is detected, and it is determined that the distance to the obstacle is not further reduced, in the process of continuously transmitting the ultrasonic signal through the driving signal, continuously driving the ultrasonic signal to generate the ultrasonic signal through the driving signal of the third frequency; and when determining that