Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Design of a multipurpose device to support daily activities
Submission Author:
Alina de Souza Leão Rodrigues , SP
Co-Authors:
Alina de Souza Leão Rodrigues, Daniel Garcia-Ribeiro, Italo Leite de Camargo, Mateus Silva, Zilda de Castro Silveira
Presenter: Alina de Souza Leão Rodrigues
doi://10.26678/ABCM.COBEM2021.COB2021-0023
Abstract
This paper presents the conceptual design of an assistive device applied to daily living. The design development of assistive devices needs to incorporate health attributes related to safety, comfort, ergonomics, and independence levels. In addition, in the context of a multifactorial domain there is necessary frontier knowledge between engineering and health, specifically occupational therapists. This paper proposes a multipurpose assistive device concept to support daily activities based on a design for assistive technology. The first step, called design cross-domain (DCD), was to lead an interaction with researches on assistive technology to understand the functional profile attended by this kind of assistive technology and a prospection of the patents and commercial products in order to identify limitations and opportunities for design improvement. In the second phase, called conceptual spiral design, methods and techniques were applied in order to obtain the User Requirements to direct the technical characteristics deployment. The use of theory of inventive problem solving – TRIZ – linked to House of Quality from Quality Function Deployment (QFD) supports the exploration of contradictions scenery during the conceptual and technical choices. The resulting most important technical attributes and their relative weights were time to perform tasks (18.2%) and distance from the user hand to the center of mass (15.4%). The observed most relevant technical contradictions were 1) average roughness versus time of use until skin irritation; and 2) distance from the user hand to the center of mass versus length variation. The TRIZ application appointed the inventive principles of segmentation and nesting to resolve these conflicts. The patents and commercial researches indicated the gap of this kind of assistive product in Brazil. The use of a design methodology focused on customization/assistive technology allowed the participation of health professionals and researchers in early design phases, contributing to design learning for both areas, and included an end-user in some discussions after the virtual design.
Keywords
design for customization, design methods, assistive technology, universal design, open design
