Abstract
The aim of the present work is to develop a smart wheelchair by integrating multiple sensors for measuring user’s physiological signals and subsequently transmitting and monitoring the treated signals to the user, a designated person or institution. Among other sensors, force, accelerometer, and temperature sensors are successfully integrated within both the backrest and the seat cushions of the wheelchair; while a pulse sensor is integrated within the armrest. The pulse sensor is connected to an amplification circuit board that is, in turn, placed within the armrest. The force and temperature sensors are integrated into a textile cover of the cushions by means of embroidery and sewing techniques. The signal from accelerometer is transmitted through Wi-Fi connection. The electrical connections needed for power supplying of sensors are made by embroidered conductive threads.
Highlights
State-of-the-art Many wearable health monitoring systems have become available in the markets [1]
The percentage of the seniors would increase 80% in 2050 comparing to their percentage in 2005 [3]. Another possible solution to monitor their health status is by developing a health monitoring system based on a smart wheelchair; since it is more adequate for such a numerous audience and a wheelchair does not need as much care as wearable systems
On the other hand, based on literature survey, very few projects can be found concerning the development of smart wheelchair such as Connected Wheelchair project by Intel® Technology [4] and Chech@flash project by Altran Stream Vision [5]
Summary
The object of the present work is to develop a smart wheelchair based on a traditional one by integrating multiples sensors within its structure. The targeted sensors are pulse, force, accelerometer and temperature sensors, and the targeted integration structures are the armrest and the textile structures of both backrest and seat cushions. The force sensors used are of type FlexiForce A201 [11] (Figure 1-B) and purchased from Mescan, France [12].
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