Self‐powered wearable devices have attracted significantly increased attention in human motion monitoring. These flexible physical sensors conformally attach to the surface of the skin to provide new applications in human‐activity monitoring. Herein, a highly flexible and self‐powered piezoelectric pressure sensor for real‐time human motion detecting using a piezoelectric thin film with high filling ratio of lead zirconate titanate (PZT) nanofibers (NFs) in polydimethylsiloxane (PDMS) is reported. Due to the large dielectric constant of PZT and elastic properties of PDMS, the sensor performs in a wide linear region (1.25–250 kPa) with great linearity (pressure–voltage 0.9909) and good reproducibility over 2000 cycles. Using the sensor, various human body motions are detected, including joint bending, subtle/large wrist deformations, wrist and some common sporting movements. In addition, a sensor array is successfully developed to realize motion tracking, showing strong potential for application in personal recognition.

中文翻译：

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柔性压电纳米纤维/基于聚二甲基硅氧烷的压力传感器，用于自供电人体运动监测

自供电可穿戴设备在人体运动监控中引起了极大的关注。这些灵活的物理传感器共形地附着在皮肤表面，为人类活动监控提供了新的应用。本文报道了一种高度灵活且自供电的压电压力传感器，该传感器使用具有在聚二甲基硅氧烷（PDMS）中高钛酸锆钛酸铅（PZT）纳米纤维（NFs）填充率的压电薄膜进行实时人体运动检测。由于PZT的介电常数大和PDMS的弹性，该传感器在宽线性区域（1.25-250 kPa）内表现出良好的线性（压力-电压0.9909），并且在2000个周期内具有良好的重现性。使用传感器，可以检测到各种人体运动，包括关节弯曲，手腕的细微/大变形，手腕和一些常见的运动动作。另外，成功开发了传感器阵列以实现运动跟踪，显示出在个人识别中应用的强大潜力。