Scientists develop sensitive skin for robots: The centerpiece of the new robotic shell is a 5 square centimeter hexagonal plate or circuit board. Each small circuit board contains four infrared sensors that detect anything closer than 1 centimeter. "We thus simulate light touch," explains Mittendorfer. "This corresponds to our sense of the fine hairs on our skin being gently stroked." There are also six temperature sensors and an accelerometer. This allows the machine to accurately register the movement of individual limbs, for example, of its arms, and thus to learn what body parts it has just moved. "We try to pack many different sensory modalities into the smallest of spaces," explains the engineer. "In addition, it is easy to expand the circuit boards to later include other sensors, for example, pressure."
Plate for plate, the boards are placed together forming a honeycomb-like, planar structure to be worn by the robot.