Preparation and Characterization of Resistive Strain Sensor Based on Braided Skin-Core Rope

This study proposed a new yarn-like strain sensor on the basis of the braided skin-core rope,and investigated the effect of braiding structures on the sensing properties of sensors.The morphology and electromechanical properties of the strain sensor with different braiding structures were compared and evaluated.The results show that the sensing performance of the sensor from a braided skin-core rope depends on both the number of yarns in braiding and the metallized process of braided rope.Generally,the present stretchable skin-core rope-based sensor provides a basis for the formation of a highly sensitive sensing structure.

包覆度对包覆纱应变传感器基本传感性能的影响

弹性包覆纱具有螺旋包缠结构,在纱线应变传感器的设计中得到了广泛应用。但是,目前还没有关于包覆纱结构参数与其传感性能之间关系的研究。针对包覆纱的结构参数——包覆度和包覆纤维结构,分别制作了包覆度20~40捻/cm的单层和双层包覆纱线,并进行聚吡咯原位聚合形成导电纱,通过测试在拉伸应变下的电阻响应,评价其作为传感器的灵敏性、敏感阈值和重复稳定性。试验结果显示:包覆纱应变传感器的电阻响应随包覆度不同而变化,灵敏性在包覆度为40捻/cm时最好,能检测应变低至0.5%的拉伸运动;单层包覆结构传感器的包覆度越小,重复稳定性越好,而双层包覆结构正好相反。