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Development and evaluation of a new body-seat interface shape measurement system

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4 Author(s)
Yue Li ; Dept. de Genie de la Production Automatisee, Ecole de Technol. Superieire, Montreal, Que., Canada ; Aissaoui, R. ; Lacoste, M. ; Dansereau, J.

A new system has been developed to capture the body-seat interface shape. It can repeatedly and accurately measure interface deformation. The shape sensing array system uses optical fiber technology and is noninvasive. The system can cover an interface as large as 400×480 mm and the shape is measured over a 10×12 array of sensors laminated on ribbon substrates. The accuracy and repeatability of this system were assessed. Measurement errors were evaluated by comparing the shape with a reference shape obtained by a mechanical digitizer. The root-mean-square error in the Z direction for the system was 3.79 mm. The repeatability of the system was within 0.38 mm under controlled conditions. Different interface materials noticeably affected measurements. With the development of this interface shape measurement device, the basic information gathered through its use may prove to be fundamental in the successful design of generic-shape contoured support surfaces. Furthermore, we expect that the new shape measurement device will provide a quick and effective tool for cushion evaluation and clinical guidelines for cushion prescription.

Published in:

Biomedical Engineering, IEEE Transactions on  (Volume:51 ,  Issue: 11 )

Date of Publication:

Nov. 2004

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