Wheelchair seating evaluation system ∼ Introduction of system functions ∼

Akihiko Hanafusa, K. Ouki, K. Miyazaki, T. Komeda, T. Ikeda, N. Suzuki, A. Hattori

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, a system for evaluating the wheelchair seating posture is introduced. The system consists of three subsystems: a seating posture changing system, a seating posture analysis system, and a propulsion analysis system. The seating posture changing system uses pneumatically controlled airbags installed in the wheelchair seat to change the posture of the patient and aims to generate a good posture heuristically. The seating posture analysis system uses seat sensors, video cameras, and whose analysis software to measure and analyze the current posture by seat sensors. One of the features of the analysis system is that the shape of the spine is estimated virtually, as the shape is one of the best indicators of a patient's posture. From the current seating posture, the propulsion analysis system estimates the posture, driving force, and muscular forces necessary to propel the wheelchair. Basic hardware and software for the pneumatically controlled functions have been developed for the posture changing system, and the displacements of the human body were measured by a 3D motion analysis system when four airbags were filled with air independently. A method to estimate the spinal shape by the finite element method (FEM) using beam elements has been developed for the seating posture analysis system. This method has a fast processing time and takes external forces into consideration. A method that can estimate the position of the neutral axis of the spine from markers placed on body surfaces was also developed. For the propulsion analysis system, propulsion motion and muscular forces of a subject in the wheelchair with a seat cushion or a back seat cushion were analyzed. Future work includes the development of the remaining functions, such as the overlay display function of the video camera images and sensor data, and the integration of the entire system.

Original languageEnglish
Title of host publication2012 9th France-Japan and 7th Europe-Asia Congress on Mechatronics, MECATRONICS 2012 / 13th International Workshop on Research and Education in Mechatronics, REM 2012
Pages307-312
Number of pages6
DOIs
Publication statusPublished - 2012
EventJoint 2012 9th France-Japan and 7th Europe-Asia Congress on Mechatronics, MECATRONICS 2012 and 13th International Workshop on Research and Education in Mechatronics, REM 2012 - Paris
Duration: 2012 Nov 212012 Nov 23

Other

OtherJoint 2012 9th France-Japan and 7th Europe-Asia Congress on Mechatronics, MECATRONICS 2012 and 13th International Workshop on Research and Education in Mechatronics, REM 2012
CityParis
Period12/11/2112/11/23

Fingerprint

Wheelchairs
systems analysis
Seats
Propulsion
evaluation
Video cameras
Sensors
video
Display devices
System of systems
Hardware
Finite element method
subsystem
hardware
Processing
Air
air

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Education

Cite this

Hanafusa, A., Ouki, K., Miyazaki, K., Komeda, T., Ikeda, T., Suzuki, N., & Hattori, A. (2012). Wheelchair seating evaluation system ∼ Introduction of system functions ∼. In 2012 9th France-Japan and 7th Europe-Asia Congress on Mechatronics, MECATRONICS 2012 / 13th International Workshop on Research and Education in Mechatronics, REM 2012 (pp. 307-312). [6451025] https://doi.org/10.1109/MECATRONICS.2012.6451025

Wheelchair seating evaluation system ∼ Introduction of system functions ∼. / Hanafusa, Akihiko; Ouki, K.; Miyazaki, K.; Komeda, T.; Ikeda, T.; Suzuki, N.; Hattori, A.

2012 9th France-Japan and 7th Europe-Asia Congress on Mechatronics, MECATRONICS 2012 / 13th International Workshop on Research and Education in Mechatronics, REM 2012. 2012. p. 307-312 6451025.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hanafusa, A, Ouki, K, Miyazaki, K, Komeda, T, Ikeda, T, Suzuki, N & Hattori, A 2012, Wheelchair seating evaluation system ∼ Introduction of system functions ∼. in 2012 9th France-Japan and 7th Europe-Asia Congress on Mechatronics, MECATRONICS 2012 / 13th International Workshop on Research and Education in Mechatronics, REM 2012., 6451025, pp. 307-312, Joint 2012 9th France-Japan and 7th Europe-Asia Congress on Mechatronics, MECATRONICS 2012 and 13th International Workshop on Research and Education in Mechatronics, REM 2012, Paris, 12/11/21. https://doi.org/10.1109/MECATRONICS.2012.6451025
Hanafusa A, Ouki K, Miyazaki K, Komeda T, Ikeda T, Suzuki N et al. Wheelchair seating evaluation system ∼ Introduction of system functions ∼. In 2012 9th France-Japan and 7th Europe-Asia Congress on Mechatronics, MECATRONICS 2012 / 13th International Workshop on Research and Education in Mechatronics, REM 2012. 2012. p. 307-312. 6451025 https://doi.org/10.1109/MECATRONICS.2012.6451025
Hanafusa, Akihiko ; Ouki, K. ; Miyazaki, K. ; Komeda, T. ; Ikeda, T. ; Suzuki, N. ; Hattori, A. / Wheelchair seating evaluation system ∼ Introduction of system functions ∼. 2012 9th France-Japan and 7th Europe-Asia Congress on Mechatronics, MECATRONICS 2012 / 13th International Workshop on Research and Education in Mechatronics, REM 2012. 2012. pp. 307-312
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