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US 7,544,627 B2Granted
Pressure sensing fabric
AssigneeThe Hong Kong Polytechnic University
InventorsXiao-ming Tao, Hui Zhang
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AssigneeThe Hong Kong Polytechnic University
InventorsXiao-ming Tao, Hui Zhang
Estimating the term…
Existing pressure sensing fabrics may involve two portions, i.e., insulating and conductive portions in the fabric, which increases the complexity of the fabric system and more important, and the instablization of the resistance-strain relationship during dynamic deformation which limits the application fields due to intrinsic properties difference between the two portions. These fabrics commonly employ two or more layers to accomplish the detecting functions. Such arrangements increase the thickness, weight, and cost of the sensors with some other disadvantages such as low accuracy, instability, etc. This invention describes a pressure sensing fabric have a general structure as simple as a plurality of electrically conducting yarns forming interlocking loops of yarns. The pressure sensing fabric is found not only be able to sense pressure but also the magnitude of the pressure.
A pressure or strain sensing fabric, the fabric comprising at least one elongate electrically conductive yarn, wherein one or more of said electrically conductive yarns is arranged as a series of loops of the same yarn, at least one of the loops of said series of loops of said one or more yarns being interlocked with another loop of said series of loops;
A pressure and position sensing fabric including a first plurality of electrically conductive fabrics comprising a plurality of electrically conductive yarns, said electrically conductive yarns arranged so as to intersect at predetermined known positions, wherein one or more of said electrically conductive yarns is arranged as a series of loops of the same yarn, at least one of the loops of said series of loops of said one or more yarns being interlocked with another loop of said series of loops;
Dependencies are inferred from the claim text.