An intelligent insole based on wide-range flexible pressure sensor

Autor: Xilin Qian, Bowen Tian, Jiaqi Zhang, Ziyang Fan, Yitao Ren, Yifei Pan, Chengxi Guo, Chentao Wang, Lijie Kong, Huiyang Yu, Jianqiu Huang
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: AIP Advances, Vol 14, Iss 3, Pp 035128-035128-8 (2024)
Druh dokumentu: article
ISSN: 2158-3226
DOI: 10.1063/5.0193727
Popis: In this paper, an intelligent insole that contains five wide-range flexible capacitive pressure sensors is developed. The output signal of these five sensors is collected and processed by a portable microprocessor system, which is then transmitted to a cloud platform via a Wi-Fi module. The ensuing data visualization is constructed with a WeChat mini-program. The wide-range flexibility is achieved by employing composition materials with a high pressure-sensitive effect. A novel approach is proposed to fabricate flexible pressure-sensitive dielectrics, thereby significantly enhancing the sensitivity and detection range of pressure sensors. The fabrication process involves utilizing polydimethylsiloxane (PDMS) as a flexible substrate, incorporating nano-iron powder and polyvinylidene fluoride as sensitizing materials, and applying an external magnetic field to control the distribution of iron nanoparticles during the curing process of PDMS. Furthermore, a motion detection system tailored for these flexible sensors is developed. By integrating sensor networks with Internet of things technology, the application potential of wide-range flexible pressure sensors in kinematics and medical rehabilitation fields can be effectively realized.
Databáze: Directory of Open Access Journals