The RSL 400 safety laser scanner not only ensures that automated guided vehicles (AGVs) are operated safely by means of protective and warning fields, but it also simultaneously captures the measurement values for the navigation software
When the triangulation principle is used for navigation, AGVs are usually equipped with two different sensors: one for safety and one for navigation. The new RSL 400 safety laser scanner from Leuze electronic offers a true alternative: not only is it capable of handling the safety aspects, but it also provides all measurement values for the AGV’s navigation based on the natural-navigation principle. In addition to that, the measurement values have an extremely high angular resolution and accuracy. This is important to precisely determine the position of the AGV. This means that only one scanner is needed for safety AND navigation. Measurement value output of the RSL 400 is optimized for navigation software that functions according to the principle of natural navigation with SLAM (Simultaneous Localization and Mapping). With each revolution of its deflection unit, which last 40 milliseconds each, the safety laser scanner emits 2700 light pulses. These are scattered in all directions on obstacles. Parts of the scattered light are transmitted back to the scanner and used to calculate the distance to the obstacle. Similar to a map, the navigation software contains an image of the respective room, including all fixed boundaries. The current position of the AGV is then calculated by comparing the measurement values to the map. This concept is referred to as natural navigation. The more detailed and exact the measurement values of a scanner are, the more precisely the AGV can navigate. With an angular resolution of 0.1°, the RSL 400 can capture the environment in high detail over the entire measurement range up to 50 m. This is achieved through a particularly narrow laser spot that maintains its perpendicular shape over the entire scanning angle. It also reduces incorrect measurements, the likes of which can occur on edges.
