超声显微测量系统的信号激励接收方法研究
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作者单位:

1.北京工业大学;2.北京航天测控技术有限公司

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TH878 TN782

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国家重点基础研究发展计划2023YFF0716601,国家重点基础研究发展计划2022YFC3005002,国家自然科学基金面上项目(No.12072004)资助项目


Research on Ultrasonic Signal Excitation and Reception Method of Ultrasonic Micromeasurement System
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    摘要:

    超声显微测量技术是一种广泛应用于工业、航空航天、医疗等领域的无损检测方法。为了减小对100MHz以上高频超声激励接收仪的进口依赖,研究高频信号激励接收方法。本文超声激励电路利用三级管雪崩击穿特性,以及MARX拓扑电路的电压倍增原理,通过减小激励脉冲脉宽时间,提升带宽覆盖范围。研究了高频超声信号接收电路,并集成超声激励接收仪。研究实现了设备的国产化替代,填补国内超声领域100~500MHz高频脉冲收发仪的空白。实验结果表明,设计产生的高频激励信号峰峰值不小于128V、上升沿时间小于0.47ns、脉宽小于3.5ns,系统工作带宽覆盖500MHz,满足高频超声测量系统的需求。

    Abstract:

    Ultrasonic microscopy measurement technology is a non-destructive testing method widely used in various fields such as industry, aerospace, and medicine. In order to reduce dependence on imported equipment, particularly for high-frequency ultrasonic excitation and reception devices operating above 100MHz, research into methods for high-frequency signal excitation and reception is crucial. This paper introduces an ultrasonic excitation circuit utilizing the avalanche breakdown characteristics of a transistor and the voltage multiplication principle of the MARX topology circuit to minimize the excitation pulse width, thus enhancing the bandwidth coverage. Additionally, research on high-frequency ultrasonic signal reception circuits and the integration of an ultrasonic excitation reception instrument are presented. The research realized the localization replacement of the equipment, filling the gap of 100~500MHz high-frequency pulse transceiver in the domestic ultrasonic field. Experimental results demonstrate that the designed high-frequency excitation signal has a peak-to-peak amplitude of not less than 128V, a rise time of less than 0.47ns, and a pulse width of less than 3.5ns, with a system operating bandwidth covering 500MHz, meeting the requirements of high-frequency ultrasonic measurement systems.

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  • 收稿日期:2024-02-23
  • 最后修改日期:2024-04-12
  • 录用日期:2024-04-12
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