An ultrasonic guided wave excitation circuit for rail monitoring

By constructing a highly integrated ultrasonic guided wave excitation circuit for rail monitoring, the problems of insufficient signal waveform, signal-to-noise ratio, and environmental adaptability in existing technologies have been solved, achieving high-quality signal generation and flexible voltage adjustment, thereby improving the accuracy and reliability of monitoring.

CN122084767APending Publication Date: 2026-05-26NANTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANTONG UNIV
Filing Date
2026-03-25
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing ultrasonic guided wave excitation circuits for rail monitoring have shortcomings in terms of signal waveform, signal-to-noise ratio, circuit performance, and environmental adaptability, which affect the accuracy and reliability of monitoring.

Method used

A highly integrated ultrasonic guided wave excitation circuit for rail monitoring is constructed by using a fully digital programmable signal source, differential amplifier circuit, monolithic integrated power amplifier chip, and replaceable step-up transformer to generate high-quality signals and flexibly adjust the output voltage.

Benefits of technology

It improves signal quality and circuit reliability, enhances anti-interference capabilities, simplifies debugging and maintenance, and adapts to the needs of different monitoring distances.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses an ultrasonic guided wave excitation circuit for rail monitoring, comprising a signal generation module, a signal conditioning module, a power amplification module, and a boost output module, sequentially connected along the signal transmission direction. The power amplification module employs a monolithic integrated power amplifier chip for high-reliability amplification, and the boost output module uses a step-up transformer whose output energy is adjusted by changing the turns ratio. This circuit generates a preset optimized waveform through the digital signal generation module, which, after conditioning and amplification, ultimately outputs a high-voltage, clean excitation signal. It features high signal quality, strong anti-interference capability, flexible output energy adaptability to different monitoring distances, high system integration, and easy debugging, making it particularly suitable for long-distance online rail monitoring in harsh railway environments.
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