Abstract. Vibrating wire sensor has advantages of strong anti-interference ability, high sensitivity, easy to long-distance transmission, etc. However, currently only used for static testing technique, in geotechnical engineering and other fields. In order to make the advantages into full play, expand its application field and make it widely used in the areas of port crane, requires further study of dynamic testing technique. Based on research and analysis of static testing technique, the exploratory research of dynamic testing technique is being in popular. This paper creatively puts forward a method for filtering environmental interference and noise and on this basis, constructs an algorithm for dynamic testing, namely the HHT spectrum filtering algorithm based on wavelet threshold pretreatment. The new algorithm provides a viable direction for the vibrating wire sensors used for dynamic testing.

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