Abstract
With the technological developments, autonomous machines have become used in most areas. The sensors used in these studies are of great importance. By means of sensors, objects can be identified, counted, positioned and classified. Infrared sensors are among the types of sensors that have taken their place in these activities. In this study, their numbers, areas, positions and classifications have been carried out in order to recognize the models at close range with the active infrared sensor. A three-dimensional infrared sensor system has been created with a unidimensional active infrared sensor. This sensor system stands out with its efficiency and cost.