Detailed Introduction of sonar transducer and ultrasonic transducer

Sonar transducer and underwater acoustic transducers are two kinds of detection devices that are often heard. Many people think that these are a kind of ultrasonic sensor. What is the difference between these two transducers?

The sonar transducer directly detects and recognizes the objects in the underwater and the outline of the bottom. The sonar transducer sends out a sound wave signal, which will be reflected back when it encounters the object. It calculates its distance and position according to the reflection time and wave mode. The piezoelectric ultrasonic transducer uses ultrasound sensor has been developed based on its characteristics. Ultrasound is a mechanical wave with a vibration frequency higher than that of sound waves. It is generated by the vibration of the transducers chip under the excitation of voltage. It has high frequency, short wavelength and small diffraction phenomenon, especially good directivity and can be oriented by rays. They are dissemination and other characteristics. Sonar transducers are mainly used to detect organisms, such as detecting which organisms are underwater and how large the organism. The device you often hear about detecting monsters is a sonar transducer.