Introduction
Range is the distance from a sensor to an object. It is also called depth. Range sensing is one type of external state sensing in Robotic Sensors.
Range sensors are used for:
- navigation and obstacle avoidance
- object location and shape recognition
How it works
Range sensors use one of two physical principles:
- Triangulation: find the range from the geometry of a light beam and a detector
- Time of flight: find the range from the time a signal takes to go to the object and come back