component that detects objects in the monitoring range

NOTE There are a variety of sensor principles listed below which could be used. The most common principle is the flight time measurement (e.g. radar, lidar, sonar). Active sensor elements create a pulsed or continuously modulated field of microwaves, (infrared) light, or ultrasonic sound. The reflected energy due to an object in the detection area is received, and the distance to the object is measured. The lateral position of the object is estimated based on the beam or field directional characteristics, or based on the timing relationships between sensors with overlapping coverage areas. Alternative principles include distance measurement by triangulation principle and passive sensor systems using image processing.