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<p>Compared with conventional ultrasonic transducer arrays, the addressed excitation method offers significant advantages in flexibility and circuit complexity. However, researchers have not yet developed systems tailored for industrial nondestructive testing. This study proposes an addressed excitation circuit solution for lead zirconate titanate ultrasonic transducer arrays that was implemented on an 8+8 (64-element) array. The design features row and column gating excitation circuits controlled by negative voltage and pulse-width modulation signals, enabling flexible selection of excitation and reception regions while effectively suppressing electrical crosstalk. The echo amplitude and frequency characteristics under different aperture configurations of addressed excitation were evaluated for echoes from an aluminum block bottom surface. The experimental results demonstrated that increasing the excitation aperture significantly improved the signal-to-noise ratio (SNR), and increasing the reception aperture enhanced the echo peak voltage. The “full-array excitation, full-array reception” mode achieved the best signal quality with a peak voltage of 9.11V and SNR of 34.84 dB, whereas the “full-column excitation, full-column reception” mode achieved the best bandwidth ratio of 32.1%.</p>

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Addressing Excitation Circuit and Electrical Characteristics of Ultrasonic Transducer Array

  • 期刊论文

  • 发表日期：

    2025年6月21日

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  • Shoupeng Song,
  • Qichao Shen,
  • Wenjin Shao

摘要

Compared with conventional ultrasonic transducer arrays, the addressed excitation method offers significant advantages in flexibility and circuit complexity. However, researchers have not yet developed systems tailored for industrial nondestructive testing. This study proposes an addressed excitation circuit solution for lead zirconate titanate ultrasonic transducer arrays that was implemented on an 8+8 (64-element) array. The design features row and column gating excitation circuits controlled by negative voltage and pulse-width modulation signals, enabling flexible selection of excitation and reception regions while effectively suppressing electrical crosstalk. The echo amplitude and frequency characteristics under different aperture configurations of addressed excitation were evaluated for echoes from an aluminum block bottom surface. The experimental results demonstrated that increasing the excitation aperture significantly improved the signal-to-noise ratio (SNR), and increasing the reception aperture enhanced the echo peak voltage. The “full-array excitation, full-array reception” mode achieved the best signal quality with a peak voltage of 9.11V and SNR of 34.84 dB, whereas the “full-column excitation, full-column reception” mode achieved the best bandwidth ratio of 32.1%.