Robot is a complex machine controlled by computer, which has limbs and sensory functions similar to those of human beings. Flexible action plan; Have a certain intelligence; You can work without relying on manual operation. Robot sensor plays a very important role in robot control. It is precisely because of the sensor that robots have the perceptual function and reaction ability similar to human beings.

In order to detect the relationship between the working object and the environment or between the robot and them, the robot is equipped with tactile sensor, visual sensor, force sensor, proximity sensor, ultrasonic sensor and auditory sensor, which greatly improves the working conditions of the robot and enables it to complete complex work more fully. Because the external sensor is a product that integrates many disciplines, some aspects are still being explored. With the further improvement of external sensors, the function of robot is becoming more and more powerful, and it will make greater contributions to human beings in many fields.