Flexible strain sensor with a hat-shaped structure for in situ measurement of 3D deformation

Abstract

Flexible strain sensors that are currently available are mainly used in human motion recognition and medical health detection applications, and there is still an urgent need for sensors to realize real-time monitoring of the 3D deformation of industrial and agricultural products. In this work, a flexible strain sensor with a hat-shaped structure was fabricated using a molding technique to perform in situ measurement of 3D deformation. An algorithm for resistance change detection and linear calibration equations were proposed to enable analysis of the deformation data and calculation of local shape changes. The sensor was applied to monitor the growth deformation of a kumquat fruit, and the results were highly consistent with the algorithm. The proposed technique has great potential for application to 3D deformation detection of flexible objects.

Plant phenotyping relevance

柔軟ひずみセンサーと抵抗変化解析・校正式を開発し、カンキツ果実の成長変形という植物器官の形質を実測・検証しており、フェノタイピング手法が中心である。

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