Fibrous flexible strain sensor and preparation method and application thereof

The invention relates to a fibrous flexible strain sensor as well as a preparation method and application thereof. The sensor comprises elastic fibers and a composite conductive material, wherein a composite conductive material is loaded on the surface of the elastic fiber. According to the invention, a brittle substance is introduced into the sensing layer of the fibrous flexible strain sensor, so that the sensor is easier to crack under tensile stress, and the sensitivity of the sensor is effectively improved. The prepared fiber sensor can detect tiny strain of a local area, and monitoring of weak physiological signals (such as laryngeal muscle movement and pulse beat during pronunciation) is achieved. The manufacturing process of the fibrous flexible strain sensor is simple and efficient, and the fibrous flexible strain sensor has a good application prospect in the field of intelligent wearable devices. 本发明涉及一种纤维状柔性应变传感器及其制备方法和应用，所述传感器包括弹性纤维、复合导电材料；其中弹性纤维表面负载复合导电材料。本发明通过在纤维状柔性应变传感器的传感层引入脆性物质，使其在拉应力下更易产生裂纹，