Based on 51 ultrasonic ranging

Ultrasonic distance measurement is a method that uses acoustic wave characteristics, electronic counting, and photoelectric switches to achieve non-contact distance measurement. Due to the good directivity of ultrasonic waves, slow power consumption, and long propagation distances in media, ultrasonic waves are often used for distance measurement. The use of ultrasonic waves to detect distances is relatively simple in design, simple in calculation and processing, and can also be achieved in terms of measurement accuracy. Meet daily use requirements. Ultrasound is a sound wave with a frequency above 20khz. As a special sound wave, it also has the basic physical properties of sound wave transmission: reflection, refraction, interference, diffraction and scattering. It is closely related to physics and has flexible applications. And it is more suitable for working in harsh environments such as high temperature, high dust, high humidity and strong electromagnetic interference. Ultrasonic ranging is better in terms of accuracy and reliability. The use of ultrasonic ranging is often faster, more convenient, simpler to calculate, and easier to achieve real-time control. It has broad application prospects.