Ultrasonic Sensors

Ultrasonic sensors are developed by the characteristics of ultrasonic wave. Ultrasonic is a mechanical wave of vibration frequency above acoustic waves, which is produced by the vibration of the transducer under the excitation of the voltage, it has the characteristics of high frequency, wave length and diffraction phenomenon, especially directional and can be the directional propagation of Ray. Ultrasonic waves to liquids, solids penetration ability is very large, especially in the sunlight opaque solids, it can penetrate dozens of meters depth. Ultrasonic waves encounter impurities or the interface will produce a significant reflection of the formation of ECHO, touching objects can produce Doppler effect. The sensors based on ultrasonic characteristics are called "ultrasonic sensors", which are widely used in industry, defense, biomedicine and so on.