Flexible piezoelectric sensor based on 4D printing and its manufacturing method

摘要

Problem to be solved: to provide a flexible piezoelectric sensor based on a 4D printing including a magnetic portion and a conductive portion.SensorIncludes magnetic and conductive partsConductive sectionIncludes two relatively large substrates and helical structures disposed between the two substratesTwo substrates and helical structures areBoth are conductive metallic materials;Magnetic sectionRepresents a flexible porous structurePlaced between two substratesUsed to generate magnetic fields;When the substrate receives external pressureThe spiral structure and the magnetic part are simultaneously compressed.The magnetic flux passing through the spiral structure changes.Because the voltage on two substrates changes.By measuring the voltage change between the substrates and reflecting the change in external pressureA pressure measurement process is realized.Diagram