Echo-Cancellation for Ultrasonic Data Transmission through a Metal Channel

Primerano, Richard; Wanuga, Kevin; Dorn, Jennifer L.; Kam, Moshe; Dandekar, Kapil R.

doi:10.1109/ciss.2007.4298426

Cited by 17 publications

(14 citation statements)

References 1 publication

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“…Sherrit et al [8,9] and Bao et al [1,10] investigated the energy loss of this transmission method by experiments and finite element computations, and demonstrated experimentally 110W power through the wall at 88% efficiency. Saulnier et al [11] and Primerano et al [12] have studied wireless communication through a steel wall by using ultrasound piezoelectric transducers, where conventional radio-frequency communications cannot be applied due to shielding of the steel.…”

Section: Introductionmentioning

confidence: 99%

Wireless energy transmission through a sealed wall using the acoustic-electric interaction of piezoelectric ceramics

Xue

et al. 2009

SPIE Proceedings

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We propose a system to transmit and store electric energy by using transmitting element, a chargeable battery, and a rectifier together with a dc-dc converter to connect the two components as an integrated system. The transmitting element is modeled by two piezoelectric transducers. One is as the driving transducer for generating acoustic wave; the other is as the receiving transducer for converting the acoustic energy into electric energy. A dc-dc converter employed in the storage circuit is to match the optimal output voltage of the receiving transducer with the battery voltage for efficient charging. A synchronized switch harvesting on inductor (SSHI) in parallel with the receiving transducer is introduced to artificially extend the closed circuit interval of the rectifier. This analysis extends a previous one by considering that influence of wall thickness which always exists in the application. The characteristics of the energy-transmitting element are studied. Performance of the energy-transmitting element is optimized by synthetic adjusting parameters of the element, and carefully choosing input frequency of electric source.

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Section: Introductionmentioning

confidence: 99%

Wireless energy transmission through a sealed wall using the acoustic-electric interaction of piezoelectric ceramics

Xue

et al. 2009

SPIE Proceedings

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“…sherrit et al [8], [9] and bao et al [1], [10] investigated the energy loss of this transmission system by experiments and finite element computations. saulnier et al [11] and Primerano et al [12] have used ultrasound piezoelectric transducers to study wireless communication through a solid steel wall, where the conventional radio frequency communications cannot be applied due to the shielding of the steel.…”

Section: Introductionmentioning

confidence: 99%

A system of two piezoelectric transducers and a storage circuit for wireless energy transmission through a thin metal wall

Chen

et al. 2008

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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A system to wirelessly convey electric energy through a thin metal wall is proposed in the paper, where 2 piezoelectric transducers are used to realize energy transformation between electric and mechanical, and a rechargeable battery is employed to store the transmitted energy. To integrate them as a whole, an interface of a modulating circuit is applied between the transducer system and the storage battery. In addition, a synchronized switch harvesting on inductor in parallel with the transducer system is introduced to artificially extend the closed interval of the modulating circuit. The process of transmitting energy is computed, and the performance of the transducer system is optimized in detail for a prescribed external electric source. The results obtained are useful for understanding and designing wireless energy supply systems.

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“…Alternatively, many approaches have been presented that utilize piezoelectric transducers to transmit power and/or data through metallic barriers using ultrasound. [2][3][4][5][6][7][8][9][10][11] This work presents a practical methodology for electrically characterizing and optimizing the power transfer efficiency through an acoustic-electric channel. The channel is formed by coaxially aligning and acoustically coupling a pair of piezoelectric disk transducers to opposite sides of a thick metallic barrier.…”

Section: Introductionmentioning

confidence: 99%

Electrical optimization of power delivery through thick steel barriers using piezoelectric transducers

et al. 2010

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In many commercial, industrial, and military applications, supplying power to electronics through a thick metallic barrier without compromising its structural integrity would provide tremendous advantages over many existing barrier-penetrating techniques. The Faraday shielding presented by thick metallic barriers prevents the use of electromagnetic power-transmission techniques. This work describes the electrical optimization of continuouswave power delivery through thick steel barriers using ultrasound. Ultrasonic channels are formed by attaching pairs of coaxially-aligned piezoelectric transducers to opposite sides of thick steel blocks. The thickness of the steel considered is on the order of, or greater than, one quarter wavelength of the acoustic power signal inside of steel, requiring the use of wave propagation theory to properly analyze the system. A characterization and optimization methodology is presented which measures the linear two-port electrical scattering parameters of the transducersteel-transducer channel. Using these measurements, the simultaneous conjugate impedance-matching conditions at both transducers are calculated, and electrical matching-networks are designed to optimize the power transfer from a 50Ω power amplifier on one side of the steel block to a 50Ω load on the opposite side. In addition, the impacts of, and interactions between, transducer and steel geometries are discussed, and some general guidelines for selecting their relationships are presented. Measurements of optimized systems using transducers designed to resonate at 1 MHz with diameters from 12.7 mm to 66.7 mm, and steel block thicknesses from 9.5 mm to 63.5 mm, reveal power transfer efficiencies as high as 55%, and linear delivery of 81 watts through an optimized channel.

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Echo-Cancellation for Ultrasonic Data Transmission through a Metal Channel

Cited by 17 publications

References 1 publication

Wireless energy transmission through a sealed wall using the acoustic-electric interaction of piezoelectric ceramics

Wireless energy transmission through a sealed wall using the acoustic-electric interaction of piezoelectric ceramics

A system of two piezoelectric transducers and a storage circuit for wireless energy transmission through a thin metal wall

Electrical optimization of power delivery through thick steel barriers using piezoelectric transducers

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