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A wearable yarn-based piezo-resistive sensor

Huang, Ching-Tang and Shen, Chien-Lung and Tang, Chien-Fa and Chang, Shuo-Hung (2008) A wearable yarn-based piezo-resistive sensor. Sensors and Actuators A: Physical, 141 (2). 396 - 403.

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Smart textiles using fabric-previous termbased sensorsnext term to monitor gesture, posture or respiration have been exploited in many applications. Most of fabric-previous termbased sensorsnext term were fabricated by either coating previous termpiezo-resistivenext term materials on previous termanext term fabric or directly knitting conductive fibers into fabrics. Obviously, structures of textiles, including previous termyarnnext term structure and fabric structure, will affect the performances of previous term However, researches on the effects of the structures have not been explored yet. In this paper, previous termyarn-based sensorsnext term were fabricated by using previous termpiezo-resistivenext term fibers, elastic, and regular polyester fibers. Single and double wrapping methods were employed to fabricate the previous termyarn-based term Performances of the designed previous termyarn-based sensorsnext term were evaluated by measuring their resistance changes under variable loading. It is shown that slippage occurs between the previous termpiezo-resistivenext term fibers and the core fibers. The relationship of the resistance versus the strain cannot be described as previous termanext term linear function and should be modeled as previous termanext term second order equation. Due to the symmetric structure, the double wrapping previous termyarnnext term could resist the slippage and higher linearity in the resistance curve can be provided. Thus it can be served as previous termanext term better sensing element. The study also investigates the issue of the twist per meter (TPM) and finds that there are no significant effects for using different TPM. Finally, experiments were conducted on previous termanext term respiration monitoring system to prove the feasibility of the previous termyarn-based sensorsnext term and the results demonstrate that the previous termyarn-based sensornext term can track the respiratory signals precisely.

Item Type:Article
Uncontrolled Keywords:Smart textile; previous termYarn-based sensornext term; Piezoresistive
Subjects:Analytical Science > Nanotechnology for sensing and actuating
ID Code:4886
Deposited By:SPI
Deposited On:10 Apr 2009 06:54
Last Modified:10 Apr 2009 06:54

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