Man Jiandong, Jin Zhenhu, Chen Jiamin
State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
Adv Sci (Weinh). 2024 Mar;11(12):e2306832. doi: 10.1002/advs.202306832. Epub 2024 Jan 18.
Due to the high application value in intelligent robots, tactile sensors with large sensing area and multi-dimensional sensing ability have attracted the attention of researchers in recent years. Inspired by bionics of hairs on human skin, a flexible tactile sensor based on magnetic cilia array is developed, showing extremely high sensitivity and stability. The upper layers of the sensor are multiple magnetic cilia containing magnetic particles, while the lower layer is a serpentine flexible circuit board with a magnetic sensor array. When magnetic cilia are bent under force, the magnetic sensor array can detect changes in the magnetic field, thereby the magnitude and direction of external force can be obtained. The proposed sensor has a resolution of 0.2 mN with a working range of 0-19.5 mN and can distinguish the direction of external force. The large sensing area and short response time make this sensor suitable for sliding tactile detection, and experiments show that the sensor can be also applied in object recognition with a success accuracy of 97%. In addition to the shape of objects, the sensor can identify whether there is magnetism inside objects, making it of significant value in intelligent robots and modern medicine.
由于在智能机器人中具有很高的应用价值，近年来，具有大传感面积和多维传感能力的触觉传感器引起了研究人员的关注。受人类皮肤毛发仿生学的启发，开发了一种基于磁纤毛阵列的柔性触觉传感器，具有极高的灵敏度和稳定性。传感器的上层是多个含有磁性颗粒的磁纤毛，而下层是带有磁传感器阵列的蛇形柔性电路板。当磁纤毛在力的作用下弯曲时，磁传感器阵列可以检测磁场的变化，从而获得外力的大小和方向。所提出的传感器分辨率为0.2 mN，工作范围为0-19.5 mN，能够区分外力方向。大传感面积和短响应时间使该传感器适用于滑动触觉检测，实验表明该传感器在物体识别中也能应用，成功率达97%。除了物体形状外，该传感器还能识别物体内部是否有磁性，这使其在智能机器人和现代医学中具有重要价值。
