article_snippet.sent: Each robot is equipped with four infrared sensors, and five ultrasonic microphones to detect surrounding objects, even in the dark.
article_snippet.sent: And, based on the differing speeds of sound and light waves, an impressive weight system determines the relative positions of the robots within a 172 square feet (16 metre square) space.
article_snippet.sent: Each robot is equipped with four infrared sensors, and five ultrasonic microphones to detect surrounding objects, even in the dark.
article_snippet.sent: And, based on the differing speeds of sound and light waves, this system determines the relative positions of the robots within a 172 square ft (16 metre square) space.