Integrating sensory devices with wireless power transfer technology for remote sensing (RS) requires the implementation of complex electronic circuitry and communication protocols. To overcome this challenge and remotely monitor mechanical force, we directly integrated piezo-responsive porous multiwalled carbon nanotubes (MWCNTs)/polydimethylsiloxane (PDMS) nanocomposites with a near-field wireless power transfer system. The wireless system transfers power bidirectionally between the transmitter and the sensing receiver at the resonant frequency of 13.56 MHz. The detection principle is based on the mechanical force-induced impedance changes in the receiver circuit. The modulated impedance signal is detected wirelessly at the transmitter circuit via a full-bridge rectifier and a smoothing capacitor. Furthermore, we demonstrate the wireless monitoring of finger bending and applied force using our flexible and disposable sensor without using any energy storage devices. The results suggest a response and recovery time of 400 ± 50 ms, strain sensitivity of 24.73, and pressure sensitivity of 0.98. Our approach adds a new path for disposable haptic-based sensory applications that do not require complex communication protocols in medical, robotics, and other fields.

中文翻译：

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基于电力路由的多端 VSC-HVDC 电网故障检测策略


将传感设备与无线功率传输技术集成以进行遥感 (RS) 需要实施复杂的电子电路和通信协议。为了克服这一挑战并远程监测机械力，我们直接将压电响应多孔多壁碳纳米管（MWCNT）/聚二甲基硅氧烷（PDMS）纳米复合材料与近场无线功率传输系统集成。无线系统以 13.56 MHz 的谐振频率在发射器和传感接收器之间双向传输功率。检测原理是基于接收电路中机械力引起的阻抗变化。调制阻抗信号通过全桥整流器和平滑电容器在发射器电路处无线检测。此外，我们演示了使用灵活的一次性传感器对手指弯曲和施加的力进行无线监控，而不使用任何能量存储设备。结果表明，响应和恢复时间为 400 ± 50 ms，应变灵敏度为 24.73，压力灵敏度为 0.98。我们的方法为一次性基于触觉的传感应用增加了一条新途径，这些应用在医疗、机器人和其他领域不需要复杂的通信协议。