Università di Pisa: A sensing glove for recognising hand postures

The Università di Pisa designed and realized a sensing glove able to detect hand posture and gesture. The glove is directly applied to a textile substrate and can be worn for a long time with no discomfort. Conductive Elastomer (CE) material is directly spread over a Lycra/cotton fabric. The CE composites show piezoresistive properties when an external deformation occurs. When subjects wearing the glove move their hand, CE sensors detect local deformations on the fabric.

In a preliminary study algorithms were formulated for mapping sensor values into user hand posture for data interpretation. Each hand posture is associated to a given set of values of the sensors on the glove. If the number of sensors is large enough, the values presented are unique for the position considered. The sensing glove showed good capabilities of repeatability, even when it is removed and re-worn (by the same subject). In this way, it is possible to identify different postures (see figure below).

(a) American Sign Language Recognition using the sensing Glove. (b) Writing on a PC screen by using the glove.
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