Flexible vibration sensor based on PVDF film and preparation method thereof

Abstract

The invention relates to a flexible vibration sensor based on a PVDF film, and belongs to the technical field of sensing. The sensor provided by the invention has good flexibility and ductility, can be freely bent and even folded, is flexible and diverse in structural form, can be randomly arranged according to the requirements of the surface conditions of a measured object, can very conveniently detect the surface of a complex measured object, and the sensor can play an important role in the fields with irregular surfaces, such as biomedical treatment, bridges and the like. In addition, the invention also relates to a preparation method of the flexible vibration sensor based on the PVDF film, the method is flexible in applicable film size, the time for packaging the film into a device can be greatly shortened, meanwhile, the PVDF film cannot be damaged, and the method is compatible with the existing production process, and meanwhile, the packaging operation is convenient, the packaging time consumption is short, the packaging size is small, the response is sensitive and the like, the packaged PVDF device can well convert the received vibration signal into a charge signal, and the packaging method is suitable for large-scale popularization and application.

Description

technical field [0001] The invention belongs to the technical field of sensing, and in particular relates to a flexible vibration sensor based on PVDF film and a preparation method thereof. Background technique [0002] In recent years, highways, railway construction, bridges, aerospace and other fields are developing rapidly, and the safety of these facilities is not only related to economic development, but also related to people's safety and national security. In order to ensure the safety of these facilities, health monitoring of these facilities is required. Traditional piezoelectric ceramic sensors have the disadvantages of large volume, high hardness, and inability to bend. In actual application, the sensor often needs to collect signals on a specific irregular surface, so the application range has certain limitations. The flexible sensor has good flexibility, ductility, can be bent or even folded freely, and has a flexible and diverse structure. It can be arranged a...

AI Technical Summary

Problems solved by technology

Traditional piezoelectric ceramic sensors have the disadvantages of large volume, high hardness, and inability to bend. In actual application, the sensor often needs to collect signals on a specific irregular surface, so the application range has certain limitations.

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