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Ultrasonic sensors are devices used to measure distances, detect objects or monitor the level of liquids and bulk materials. They operate on the principle of emitting sound waves with frequencies higher than those audible to the human ear (usually above 20 kHz) and analyzing their reflection from encountered obstacles. In this article, we will present a detailed classification of ultrasonic sensors, discuss their types of outputs and show the most popular applications.
Lidar (Light Detection and Ranging) is a technology that uses laser light to precisely measure distances. Lidar laser scanners are used in many industries – from automotive to geodesy – and their ability to create three-dimensional maps of the surface of the terrain or objects makes them uniquely applicable in modern engineering and technological applications.
Rotary encoders are devices used to measure the angle of rotation, rotational speed and position in machines and automation systems. They enable precise monitoring of movement in industrial applications, robotics, and everyday devices. In this article, we will discuss the most popular types of rotary encoders: magnetic and optical, and their applications.