“…For monitoring rooms for physical experiments with increased environmental requirements, it is important to self-orientate the robot in the room. This is achieved by using 2Y0A21 infrared rangefinders to determine the distance to obstacles [3], as well as tachometers to determine the distance travelled. Since the directional pattern of IR sensors is 3o, it is advisable to use a system of three sensors that scan space in three directions (Fig.…”