Full-duplex ultrasonic through-wall communication and power delivery system with frequency tracking

Lawry, Tristan J.; Saulnier, Gary J.; Wilt, Kyle R.; Ashdown, Jonathan D.; Scarton, Henry A.; Gavens, Andrew

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Title: Full-duplex ultrasonic through-wall communication and power delivery system with frequency tracking

Abstract

A method and apparatus provide simultaneous bi-directional communications through a barrier using a pair of piezoelectric transducers. Outside-to-inside transmission of differentially encoded binary data is only sampled at the inside when a known repeated bit in a Barker sequence is transmitted in the other direction. Differentially encoded data is translated based on the absolute value of differences between each signal envelope sample and the previous signal envelope sample. Inside-to-outside data is transmitted by varying an electrical load on the inside transducer to vary the proportion of a continuous wave signal it reflects. The reflected portion of the continuous wave changes the electrical impedance of the outside transducer and this change is measured and interpreted as binary data. Two frequency selection algorithms select minimally sufficient and then optimal frequencies for power and data transmission by a frequency stepping process.

Inventors:: Lawry, Tristan J.; Saulnier, Gary J.; Wilt, Kyle R.; Ashdown, Jonathan D.; Scarton, Henry A.; Gavens, Andrew

Issue Date:: Tue Sep 27 00:00:00 EDT 2016

Research Org.:: Rensselaer Polytechnic Inst., Troy, NY (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1531950

Patent Number(s):: 9455791

Application Number:: 14/385,947

Assignee:: Rensselaer Polytechnic Institute (Troy, NY)

Patent Classifications (CPCs):: H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04B - TRANSMISSION

H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04L - TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION

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H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04B - TRANSMISSION
H04B11/00 - Transmission systems employing sonic, ultrasonic or infrasonic waves

H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04L - TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
H04L5/14 - Two-way operation using the same type of signal, i.e. duplex

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DOE Contract Number:: KN6000590

Resource Type:: Patent

Resource Relation:: Patent File Date: 2013-03-21

Country of Publication:: United States

Language:: English

Citation Formats


                    Lawry, Tristan J., Saulnier, Gary J., Wilt, Kyle R., Ashdown, Jonathan D., Scarton, Henry A., and Gavens, Andrew. Full-duplex ultrasonic through-wall communication and power delivery system with frequency tracking.  United States: N. p., 2016. 
        Web.

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                    Lawry, Tristan J., Saulnier, Gary J., Wilt, Kyle R., Ashdown, Jonathan D., Scarton, Henry A., & Gavens, Andrew. Full-duplex ultrasonic through-wall communication and power delivery system with frequency tracking.  United States.

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                    Lawry, Tristan J., Saulnier, Gary J., Wilt, Kyle R., Ashdown, Jonathan D., Scarton, Henry A., and Gavens, Andrew. Tue .  
        "Full-duplex ultrasonic through-wall communication and power delivery system with frequency tracking".  United States.  https://www.osti.gov/servlets/purl/1531950.

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@article{osti_1531950,

  title        = {Full-duplex ultrasonic through-wall communication and power delivery system with frequency tracking},

  author       = {Lawry, Tristan J. and Saulnier, Gary J. and Wilt, Kyle R. and Ashdown, Jonathan D. and Scarton, Henry A. and Gavens, Andrew},

  abstractNote = {A method and apparatus provide simultaneous bi-directional communications through a barrier using a pair of piezoelectric transducers. Outside-to-inside transmission of differentially encoded binary data is only sampled at the inside when a known repeated bit in a Barker sequence is transmitted in the other direction. Differentially encoded data is translated based on the absolute value of differences between each signal envelope sample and the previous signal envelope sample. Inside-to-outside data is transmitted by varying an electrical load on the inside transducer to vary the proportion of a continuous wave signal it reflects. The reflected portion of the continuous wave changes the electrical impedance of the outside transducer and this change is measured and interpreted as binary data. Two frequency selection algorithms select minimally sufficient and then optimal frequencies for power and data transmission by a frequency stepping process.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Sep 27 00:00:00 EDT 2016},

  month        = {Tue Sep 27 00:00:00 EDT 2016}

}

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