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Initial Development of a Portable Acoustic Array on a Large-Scale E-Textile Substrate

Published online by Cambridge University Press:  11 February 2011

K. A. Luthy,
L. S. Mattos,
J. C. Braly,
E. Grant,
J. F. Muth,
A. Dhawan,
K. Natarajan,
T. Ghosh and
A. Seyam
K. A. Luthy
Affiliation:
Center for Robotics and Intelligent Machines, Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC
L. S. Mattos
Affiliation:
Center for Robotics and Intelligent Machines, Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC
J. C. Braly
Affiliation:
Center for Robotics and Intelligent Machines, Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC
E. Grant
Affiliation:
Center for Robotics and Intelligent Machines, Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC
J. F. Muth
Affiliation:
Center for Robotics and Intelligent Machines, Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC
A. Dhawan
Affiliation:
Department of Textile and Apparel Technology and Management, North Carolina State University, Raleigh, NC
K. Natarajan
Affiliation:
Department of Textile and Apparel Technology and Management, North Carolina State University, Raleigh, NC
T. Ghosh
Affiliation:
Department of Textile and Apparel Technology and Management, North Carolina State University, Raleigh, NC
A. Seyam
Affiliation:
Department of Textile and Apparel Technology and Management, North Carolina State University, Raleigh, NC
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Abstract

Electronic textiles offer possibilities for producing large-area sensors circuits on conformal substrates. To demonstrate this concept, a 5×4 element acoustic array was produced on a 3m × 1m fabric substrate. In the course of fabricating the acoustic array a variety of production issues were identified that impacted the performance of the prototype when experimental tests were carried out with this prototype acoustic array. Fabric-based acoustic array design and production, along with design issues related to scaling an acoustic array to handle larger numbers of microphones on large-area fabrics, are the focus of this paper.

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References

REFERENCES

Walworth, M. and Mahajan, A., “3D Position Sensing using the Difference in the Time-of-Flights from a Wave Source to Various Receivers,” in Proc. 8th International Conference of Advanced Robotics (ICAR '97), Monterey, CA, July 7–9, 1997, pp. 611–616.Google Scholar
Dhawan, A., “Woven fabric-based electrical circuits“, Masters Thesis Dissertation under the supervision of T. K. Ghosh, A. Seyam, and J. Muth, North Carolina State University, December, 2001.Google Scholar
[3] Dhawan, A., Ghosh, T., Seyam, A., and Muth, J., “Woven Fabric-based Electrical Circuits“, Proceedings of the Textile Technology Forum organized by the Industrial Fabrics Association International and the Textile Institute, Charlotte, NC, October 23, 2002.Google Scholar