A Risk Assessment Method That Enables the Consideration of Daily Behavior and Environment

Abstract

This study proposes a novel risk assessment method that considers daily objects and behaviors in living spaces. The method enables us to assess the risk of injury occurrence in an environment by considering the arrangement of furniture, daily behavior, and a large-scale database of domestic accidents. To verify its feasibility, we developed a prototype system. This digital twin system consists of an accident database, 3D scanning from smartphones or devices, posture data measurement via RGB cameras, and real-time and post-event risk visualization. Validation experiments in a simulated environment confirmed that the system can assess changes in average injury severity due to different movement paths and object arrangements. Additionally, expert interviews were conducted using the prototype to identify potential applications and related challenges.