Group 1 - The first flight test of China's self-developed 3D printed turbojet engine has been successfully completed, marking a significant breakthrough in the engineering application of 3D printed engines [2] - Yushu Technology launched its first wheeled humanoid robot, G1-D, which features a high-performance humanoid body and a comprehensive data collection and model training solution, with a height range of approximately 1260-1680mm and a maximum speed of 1.5m/s for the flagship version [2] - Yushu Technology's patent for a multi-floor composite navigation method and device for robots has been authorized, significantly improving the information retention and optimal path planning in multi-floor navigation scenarios [2] - Kailong High-tech introduced the "Huilingjia" robot series at the 2025 International Internal Combustion Engine and Power Equipment Expo, showcasing humanoid robots with high dynamic motion capabilities and multi-legged robots with strong adaptability in harsh environments [2]

Core Viewpoint - Yushu Technology Co., Ltd. has recently been granted a patent for a "multi-floor composite navigation method and device for robots," which aims to enhance navigation efficiency in multi-floor environments by improving the preservation of grid map information and optimizing path planning [1] Group 1: Patent Details - The patented invention belongs to the field of robot navigation technology [1] - Existing navigation solutions have low preservation of grid map information during multi-floor navigation, leading to suboptimal path planning [1] - The new method segments 3D point cloud maps by floor, significantly improving information preservation [1] Group 2: Methodology - Each floor's 3D point cloud map undergoes projection and rasterization to create multiple 2D maps for the same level [1] - The method analyzes inter-floor connections and structural features to generate an inter-floor connection map [1] - Topological path searching is conducted based on the inter-floor connection map and 2D same-level maps to derive the optimal planning path [1] Group 3: Application - The invention enables accurate navigation for robots within multi-floor environments of the same building [1]