Research on Laser Positioning System of a Underground Inspection Robot Based on Signal Reflection Principle

With the rapid development of social economy, more and more modern cities have to be served by its underground spaces that made life possible for millions of citizens, including urban rail transit and utility tunnel. This underground space needs routine inspection and maintenance which is usually unaccessible for its narrow and confined space, but an intelligent robot with accurate positioning system can take its advantages and provide an ideal solution. This positioning module can work by a signal reflection principle with robot and multiple reflective stickers. By testing on robot platform, it can provide real-time positioning coordinates in an efficient and accurate way, help robot navigate and inspect in an auto and even blind mode in an enclosure, which validates it is a feasible proposal.