The 77th International Exhibition of Inventions Nuremberg (iENA) was held at the Nuremberg International Exhibition Center in Germany from Nov 1 to 3, attracting 540 technological achievements from 21 countries.

The team from the School of Computer Science and Technology at the Beijing Institute of Technology (BIT) led by Liu Chi and Han Rui, participated alongside students Zhang Qinglong, Zhao Yinuo, and Cheng Yunlai. They earned the gold medal (with a winning rate of about 10 percent) and the silver medal (with a winning rate of about 20 percent).

The project "Air-Ground Collaborative Mobile Crowdsensing System and Method for Smart Cities," led by Liu Chi, won the gold medal. This project addresses three major challenges faced by drone and vehicle swarms: low connectivity coverage, poor collaboration efficiency, and limited computational resources. It proposes a connectivity coverage strategy under constrained communication conditions, a collaborative data collection method that optimizes charging efficiency, and a computation optimization theory for resource-limited conditions. These innovations are applied to typical smart city scenarios such as emergency communication during disasters, traffic accident response, and report generation, significantly enhancing group coordination efficiency.

The silver medal went to the project "Edge-Side Model Training Methods and Systems in Intelligent Manufacturing Scenarios," led by Han Rui. This project addresses three major challenges in intelligent manufacturing: limited resources, frequent environmental changes, and high data noise. It introduces three key technologies: block-granularity model scaling, collaborative training of models of different sizes, and noise-suppression training through adapter decoupling. These technologies are applied to typical intelligent manufacturing scenarios such as product defect detection and multi-domain vehicle connectivity. The solutions can significantly reduce carbon emissions and labor costs while improving the accuracy and efficiency of product defect detection, offering substantial economic benefits and application value.

Founded in 1984, iENA in Nuremberg, Germany, is one of the world's oldest and most influential international invention exhibitions.