我国科研人员取得无线感知技术新突破

Core Insights - Tianjin University has made significant advancements in wireless sensing technology, transforming ordinary Wi-Fi signals into a "perceptive butler" for smart homes, enabling the analysis of human activity without voice commands [1][3] - The research addresses two major challenges in deploying high-precision sensing applications in real home environments: complex system deployment and low accuracy due to signal obstruction [1][3] Group 1: Deployment Challenges - The team innovatively repurposed the increasingly common robotic vacuum cleaners as "automatic data collectors" to simplify system deployment, allowing for automatic mapping of the home environment and Wi-Fi signal mapping with an accuracy of 0.1 meters [2] - Users only need to run the robotic vacuum once for system initialization, eliminating the need for professional installation and manual measurements [2] Group 2: Accuracy Improvements - The research team developed a new theoretical model that accounts for the complex propagation of Wi-Fi signals in cluttered home environments, moving away from traditional models that assume unobstructed signals [3] - This new model enables stable and reliable high-precision sensing in real household settings, overcoming previous limitations [3]