Robot-Based Diver Safety Support Scenario and Concept Design for NADIA

This paper describes the definition of robot functions and conceptual design for the effective development of a diver safety support robot: the nautical advanced diving intelligent assistance system (NADIA). It is designed to support divers’ safe activities by monitoring them in close proximity, aiming to prevent the majority of diving accidents caused by individual negligence. Through literature analysis, expert consultations, and direct experience, we derived the concept of diver support for the robot, and based on existing diver-centered diving scenarios, we established robot-based diver support scenarios. This process allowed us to define the robot’s functions and derive specific design plans for their implementation. The derived functions require the robot to have a lightweight and compact form with high degrees of motion freedom for dexterous movement; AI-based capabilities to estimate the diver’s position, posture, and status; precise autonomous control and self-localization technologies for close-proximity support; and the ability to use a display, sound, or light to convey information and alerts during diving. To implement these functions, design elements such as modularization and vector arrangement of propulsion units were derived. By defining and refining these required functions, we aimed to enhance the robot’s practicality and enable the successful execution of the project.