METHOD AND APPARATUS FOR IMPROVING SENSITIVITY OF VACUUM TESTING OF VACUUM SWITCH
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United States of America
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Feb 13, 2025
app pub date -
Dec 29, 2023
filing date -
Dec 29, 2023
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Disclosed is a method for improving sensitivity of vacuum testing of a vacuum switch, including the following steps: S100: smearing a water-soluble metal nanoparticle reagent evenly on a surface of a target material of a to-be-tested vacuum switch, performing standing and forming a metal nanoparticle coating on the surface of the target material; S200: bombarding, by using laser pulse, the surface of the target material where the metal nanoparticle coating is formed, so as to generate plasma on the surface of the target material; S300: obtaining a plasma image by collecting the plasma, and obtaining a plasma spectrum by performing spectroscopic analysis on the plasma image; and S400: obtaining a vacuum degree of the to-be-tested vacuum switch based on the plasma spectrum. The present disclosure can effectively improve a laser focusing degree and laser pulse stability and reduce noise interference, so as to lower testing limits and improve the sensitivity of online vacuum testing of the vacuum switch.
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