Design and development of smart AI-based voice assistive ergonomic commode wheelchair for mobility and rehabilitation

Abstract This study focuses on enhancing assistive devices for the elderly and disabled, primarily addressing the challenges associated with traditional wheelchairs. While wheelchairs are widely used for basic mobility, the research identifies several issues in existing products, such as a lack of attention to ergonomic features, anthropometric principles, and limited technological interventions. One major concern is the discomfort experienced by users over extended periods, especially when essential design elements like height and back adjustments are neglected. Another challenge highlighted is the issue of defecation, particularly in the absence of a caregiver. This dependency on caretakers can be mentally burdensome for users, raising privacy concerns during such personal activities. To address these issues, this research proposes a solution that integrates ergonomic features and incorporates low-cost technological interventions, including artificial intelligence-based voice assistance. The ultimate goal of this paper is to design and introduce an AI-based voice-assisted ergonomic wheelchair that not only supports basic mobility but also ensures comfort over extended periods. The proposed solution aims to incorporate a commode feature for defecation within a smart ergonomic wheelchair equipped with voice assistance and provide comfort to the user(s). The design prioritizes anthropometric dimensions, ensuring comfort and convenience for users across various age groups. Employing SolidWorks software, a stable and robust model has been designed, and its durability was assessed through stress analysis using the SolidWorks simulation tool by applying a 981 Newton load on the wheelchair's frame using two different materials (steel and aluminum). The maximum stress value is less than the yield strength, and the deformation is 2.57 e+00 mm for the steel frame, indicating that the design is stable and durable compared to the aluminum structure. The proposed voice-assistive, ergonomic, AI-based wheelchair with a commode cavity is a revolutionary development for the healthcare sector in terms of innovation.