Reducing crosstalk in array structures by controlling the excitation voltage of individual elements: A feasibility study

Bybi, Abdelmajid; Grondel, Sébastien; Assaad, Jamal; Hladky‐Hennion, Anne‐Christine; Granger, C.; Rguiti, Mohamed

doi:10.1016/j.ultras.2013.02.009

Cited by 14 publications

(10 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By applying a finite element algorithm to determine the electrical voltages of neighboring elements, Cugnet [6] Measurement Science and Technology Design of a fast echo matching algorithm to reduce crosstalk with Doppler shifts in ultrasonic ranging numer ically optimized the far-field directivity of an individual array element . After that, Bybi [7,8] not only verified the validity of Cugent's method for crosstalk correction experimentally, but also pointed out its applicability in large frequency bands. Improved directivity can reduce crosstalk from neighboring sensors (inside), but has limited effects for reducing crosstalk by sensors from different arrays (outside).…”

Section: Introductionmentioning

confidence: 83%

“…During coding, we initially consider m 0 = m 1 = 16 (in fact, m 0 > m 1 will benefit restraining echo trailing but increase calcul ation cost), and by substituting T p = 25 μs, c = 341.7 m s −1 , D = 10 m, into equations (7) and (8), N and T can be estimated as 150 and 60 ms, respectively.…”

Section: Experimental Layoutmentioning

confidence: 99%

“…Since the self-interference can be mostly canceled by structural optimization, the crosstalk is generally more responsible for calculating wrong distances under low-speed conditions. Researchers have developed methods to eliminate crosstalk from different views, such as directivity [6][7][8], echo matching [9,10], and sequence design [11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design of a fast echo matching algorithm to reduce crosstalk with Doppler shifts in ultrasonic ranging

Liu

Guo

2017

Meas. Sci. Technol.

View full text Add to dashboard Cite

2017). Design of a fast echo matching algorithm to reduce crosstalk with Doppler shifts in ultrasonic ranging. Measurement Science and Technology, 28(2), [025103]. AbstractCrosstalk is a main factor for wrong distance measurement by ultrasonic sensors, and this problem becomes more difficult to deal with under Doppler effects. In this paper, crosstalk reduction with Doppler shifts on small platforms is focused on, and a fast echo matching algorithm (FEMA) is proposed on the basis of chaotic sequences and pulse coding technology, then verified through applying it to match practical echoes. Finally, we introduce how to select both better mapping methods for chaotic sequences, and algorithm parameters for higher achievable maximum of cross-correlation peaks. The results indicate the following: logistic mapping is preferred to generate good chaotic sequences, with high autocorrelation even when the length is very limited; FEMA can not only match echoes and calculate distance accurately with an error degree mostly below 5%, but also generates nearly the same calculation cost level for static or kinematic ranging, much lower than that by direct Doppler compensation (DDC) with the same frequency compensation step; The sensitivity to threshold value selection and performance of FEMA depend significantly on the achievable maximum of cross-correlation peaks, and a higher peak is preferred, which can be considered as a criterion for algorithm parameter optimization under practical conditions.

show abstract

Section: Introductionmentioning

confidence: 83%

Section: Experimental Layoutmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design of a fast echo matching algorithm to reduce crosstalk with Doppler shifts in ultrasonic ranging

Liu

Guo

2017

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…3(b). A minimum section width of 0.04 mm and a length of 1.093 mm were obtained according to the advanced silicon deep reactive ion etching (DRIE) technique on 450 µm-thick silicon wafers 34,[38][39][40] in Fig. 4.…”

Section: Structural Design and Fabrication Of The Micropumpmentioning

confidence: 99%

Modeling, Vibration Analysis and Fabrication of Micropumps Based on Piezoelectric Transducers

Guan¹,

Meng²,

Liu³

et al. 2020

The International Journal of Acoustics and Vibration

View full text Add to dashboard Cite

The parametric and vibrational characteristics of PZTs (Piezoelectric Transducers) with different diameters before and after coupling are discussed by finite element analysis. It is shown that the vibration stability of the piezoelectric transducer decreases with increasing driving frequency. The PZT's variation of maximum displacement with frequency shows the same trend for different driving conditions according to vibration measurement under conditions of both free and forced vibration (before and after sealing with the pump body). The maximum displacement under forced vibration is less than that under free vibration. The maximum displacement is inversely proportional to the diameter of the transducer and directly proportional to the driving voltage under both free and forced vibration. Micropumps with diffuser/nozzle microvalves are designed and fabricated with different external diameters of the PZTs. Finally, the flow rate and pressure of the micropumps are measured, which are consistent with the vibrational results. Moreover, the maximum displacement is larger under a square-wave driving signal, followed by a sine-wave signal, and then a triangle-wave signal. For a PZT with an external diameter of $12$ mm, the maximum flow rate and pressure value are $150$~$upmu$l/min and $346$ Pa, respectively, under sine-wave driving at $100$ Vpp driving voltage.

show abstract

“…In some areas such as nondestructive testing or medical imaging, developing one-way routing networks is very crucial to isolate different elements that allow acoustic signals to be manipulated independently of each other in the integrated platform [11][12][13] . Under these conditions, acoustic signals are transmitted in one direction only, which is somewhat similar to the energy-rectification characteristics of electric diodes.…”

Section: Introductionmentioning

confidence: 99%

Acoustic one-way mode conversion and transmission by sonic crystal waveguides

Ouyang

et al. 2016

Journal of Applied Physics

View full text Add to dashboard Cite

Abstract:We proposed a scheme to achieve one-way acoustic propagation and even-odd mode switching in two mutually perpendicular sonic crystal waveguides connected by a resonant cavity.The even mode in the entrance waveguide is able to switch to odd mode in the exit waveguide through a symmetry match between the cavity resonant modes and the waveguide modes. Conversely, the odd mode in the exit waveguide is unable to be converted into the even mode in the entrance waveguide as incident waves and eigenmodes are mismatched in their symmetries at the waveguide exit. This one-way mechanism can be applied to design an acoustic diode for acoustic integration devices and can be used as a convertor of the acoustic waveguide modes.1 Shiliang Ouyang and Hailong He contributed equally to this work. a)

show abstract

Reducing crosstalk in array structures by controlling the excitation voltage of individual elements: A feasibility study

Cited by 14 publications

References 15 publications

Design of a fast echo matching algorithm to reduce crosstalk with Doppler shifts in ultrasonic ranging

Design of a fast echo matching algorithm to reduce crosstalk with Doppler shifts in ultrasonic ranging

Modeling, Vibration Analysis and Fabrication of Micropumps Based on Piezoelectric Transducers

Acoustic one-way mode conversion and transmission by sonic crystal waveguides

Contact Info

Product

Resources

About