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The sensors are the powerhouse of a robot’s feedback system and they act as eyes and ears. A wide
range of sensors is used in a robotic system to perform the tasks. These include:
Cameras allow a robot to construct a visual representation of its surroundings.
Microphones are used to detect sounds.
Thermometers in some robots are used to sense temperature.
Light sensors use laser light to detect objects in the pathway.
Sound sensors or ultrasonic sensors sensors use high-frequency sounds to detect objects.
Temperature sensors sense temperature.
Contact sensors are one of the most common sensors in robotics. They are used to detect changes
in position, velocity, force, etc.
Proximity sensors are used to measure the distance of any object from a robot.
Pressure sensors sense pressure.
Positioning sensors are used in the
automation industries for accurate Common sensors include cameras, microphones,
robotic arm movement. accelerometers, gyroscopes, and proximity sensors.
Power Supply
Just like human beings consume food when they need energy, robots need energy too, to function.
Electricity is the primary source of energy for most robots. Stationary robots used in the factories
use direct power. Mobile robots use high-capacity batteries. Robotic spacecrafts and satellites are
generally equipped with solar panels.
Parts of Robots 107

