By utilizing the motion capture system, human movement data can be transmitted to the collaborative robots for flexible collaboration. Through this method, collaborative robots can acquire real-time information on human movement and posture, allowing them to instantly imitate and collaborate with human experimenters.

Robotic light sensors are of two types: Photovoltaic cells and photoresistors. Photovoltaic cells are applied when changing solar radiation energy to electrical. Naturally, these sensors are commonly used in the production of solar robots.

Levels of robot safety The national bureau of standards defines three levels of safety sensor systems in robots: Level 1 --- perimeter penetration detection. Level 2 --- intruder detection inside the workcell. Level 3 --- intruder detection in the immediate vicinity of the robot.

There are two types of light sensors used in robot parts- photoresistors and photovoltaic cells. There are some more - CCDs, Phototubes, Phototransistors. However, these are very rarely used. Photoresistors change their resistance by changing light intensities.