Ultrasound refers to mechanical waves with a frequency higher than 20 kHz. In order to use ultrasonic waves as a detecting means, it is necessary to generate ultrasonic waves and receiving ultrasonic waves. The device that performs this function is an ultrasonic sensor, which is customarily called a

The ultrasonic sensor is a sensor that is developed by using the characteristics of ultrasonic waves. Ultrasonic wave is a kind of mechanical wave with a vibration frequency which is higher than that of sound waves. It is generated by the vibration of the transducer wafer under the excitation of vol

The structure of the multi-node disk ultrasonic transducers, the horn function is to amplify the ultrasonic amplitude, and the large disk can improve the transducer's pointing. The working principle of this type of transducer is to connect a longitudinal conical horn and the longitudinal piezoelectr

The principle of drone technology and ultrasonic ranging transducer demonstrates the loss feasibility of measuring the obstacles in the electrical circuit corridor; the third chapter mainly introduces the ultrasonic ranging transducer system equipment, including selection of UAV equipment parameters