Design and focus group evaluation of a bed-integrated weight measurement system for wheelchair users

Model System:

Reference Type:

Accession No.:

Journal:

Year, Volume, Issue, Page(s):

Publication Website:

Abstract:

Article describes the design, development, and testing of the Embedded Scale, or E-Scale, which is a bed-integrated bodyweight measuring system that allows wheelchair users to measure and track their weight. The E-Scale team followed a standard product development approach to build the prototype of the passive bodyweight measurement system. The E-Scale is a combination of sensor pods that are placed under the feet of a wheelchair user’s bed that connects to a bedside unit that displays weight and sends data for tracking purposes to a user’s phone. Bench testing results indicate that the performance of the prototype is on par with commercially available wheelchair scales (capacity = 1,200 lbs, accuracy = 1.73 lbs, and precision = ± 0.35 lbs over one-fourth rated capacity). Focus groups were conducted with 20 veterans who use wheelchairs for mobility to gather feedback about the design, which was very positive. Results suggest the E-Scale technology is feasible and may provide a valuable tool to help wheelchair users manage their weight.

Author(s):

Participating Centers: