What is meant by Sensors? Explain with the reference to Robotics.

Sensors are devices that detect changes in physical conditions such as light, temperature, pressure, motion or distance and convert these changes into electrical signals.

In robotics, sensors act like the sense organs of a robot. They collect information from the robot’s surroundings or internal conditions and send it to the robot’s control unit (controller/brain). The controller uses this data to make decisions and control the robot’s actions.

Example: A proximity sensor helps a robot detect obstacles and avoid collisions, while a vision sensor (camera) helps in object recognition and accurate handling of objects.