Ultrasonic Displacement Sensors and Laser Rangefinders
Ultrasonic displacement sensors and laser rangefinders/distance measuring displacement sensors are two widely used tools for measuring distance, and they have advantages over each other. When choosing, it is necessary to analyze the specific situation and see which type of sensor is more suitable for use. Let's talk about the differences in measurement principles and performance between them.
MIRAN Ultrasonic Displacement Sensor Non Contact MCSB1000-U-A
The principles of ultrasonic displacement sensor and laser rangefinder/displacement sensor:
Ultrasonic rangefinder/displacement sensor measures based on the known propagation speed of ultrasonic waves in air and the characteristics of ultrasonic waves reflecting back when encountering obstacles. The ultrasonic transmitter emits ultrasonic waves in a certain direction and starts timing at the same time. The ultrasonic waves propagate in the air and immediately return when they encounter obstacles. The ultrasonic receiver stops timing immediately when it receives reflected waves, and then calculates the actual distance from the emission point to the obstacle based on the time difference between transmission and reception. By continuously detecting the echoes reflected by obstacles after wave emission, the time difference T between the emission of ultrasonic waves and the reception of echoes is measured, and then the distance L is calculated. Ultrasonic displacement sensors/distance measuring sensors consist of ultrasonic generation circuits, ultrasonic reception amplification circuits, counting and display circuits.
Laser rangefinder/distance sensor is a sensor that uses laser to accurately measure the distance to a target. The laser rangefinder emits a very thin laser beam towards the target during operation, and the reflected laser beam is received by the photoelectric element. The timer measures the time from emission to reception of the laser beam and calculates the distance from the observer to the target. Laser rangefinder is currently the most widely used distance sensor, which can be classified into handheld laser rangefinder/distance sensor and telescope laser rangefinder/distance sensor.
