High-sensitivity resistance-type flexible tensile strain sensor based on ball valve shape

Abstract

The invention discloses a high-sensitivity resistance-type flexible tensile strain sensor based on a ball petal shape, which comprises a PDMS stress loading layer, an upper electrode layer, a carbon black / silicone rubber flexible force sensitive film layer, two carbon black / silicone rubber cylindrical bases and a lower electrode layer, wherein the carbon black / silicone rubber flexible force sensitive film layer is of a spherical structure enclosed by six ball clacks which are uniformly distributed at intervals along the circumferential direction. The sensor is novel in structure, has higher detection sensitivity and a larger measurement range, and has a larger application prospect in the fields of intelligent robots, electronic skins, flexible wearable electronic devices, human-computer interaction and the like.

Description

technical field [0001] The invention relates to a tensile strain sensor, especially a high-sensitivity resistive flexible tensile strain sensor based on a spherical petal shape, which is mainly used in research fields such as intelligent robots, electronic skins, flexible wearable electronic devices, and human-computer interaction. . Background technique [0002] Today, with the popularity of smart products, wearable electronic devices present a huge market prospect. As one of the main core components, sensors will affect the functional design and future development of wearable devices. Due to the increasing demand for intelligent and miniaturized electronic devices, flexible stretchable strain sensors have attracted widespread attention due to their good flexibility and stretch rate. In addition, they are wearable, lightweight, portable, and biocompatible. , economy, environmental protection and other advantages, it has broad development prospects in personalized health m...

AI Technical Summary

Problems solved by technology

However, the significant improvement in sensitivity brought about by the introduction of microstructures is only reflected in a small pressure range, and microstructures that are too small will be deformed and saturated in the high-pressure detection range, resulting in a decrease in sensitivity, which cannot meet the needs of large-scale applications.

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