Introduction to the use of ultrasonic range finder
Ultrasonic distance measurement is mainly used for distance measurement of reversing reminders, construction sites, industrial sites, etc.
Ultrasound propagates at different speeds in gas, liquid and solid, with good orientation, concentrated energy, less attenuation during transmission, and strong reflection ability. Ultrasonic waves can propagate directionally at a certain speed and form reflections when encountering obstacles. Using this feature, the actual distance can be calculated by measuring the round-trip time of the ultrasonic wave, thereby realizing the non-contact measurement of the object distance. Ultrasonic distance measurement is fast, convenient, and not affected by factors such as light. It is widely used in hydrological liquid level measurement, construction site measurement, on-site position monitoring, vibration instrument vehicle reversing obstacle detection, mobile machine entry detection and positioning, etc. . The digital ultrasonic rangefinder designed in this paper counts the clock pulses input to the counter at a specific frequency within the ultrasonic round-trip time, and then displays the corresponding measurement distance.
