AI 中文总结
本文提出一种基于WPT供电的无电池室内无线传感节点，集成多传感器、低功耗计算与AES-128加密，利用1比特反向散射整流天线实现能量采集和极化通信，实验验证了低能耗下的可靠传感与加密传输。
AI 中文摘要
本文介绍了一种室内无电池无线传感节点，该节点通过辐射式无线功率传输（WPT）供电。所提出的平台旨在实现安全、节能的主动传感，并克服了先前许多无电池方法的局限性，这些方法通常既不提供节点上计算，也不提供加密保护。该节点将温度、湿度、气压和挥发性有机化合物（VOC）测量与低功耗微控制器相结合，微控制器执行传感器校准、推导VOC指数、格式化有效载荷，并在无线传输前应用AES-128加密。能量采集和通信由1比特控制的反向散射整流天线（BR）实现，该天线既能收集入射射频功率，又能产生正交极化的反向散射信号，以实现稳健的极化操作。实验结果验证了可靠的多传感器读出和加密数据传输，同时为完整的感知-计算-加密-传输周期维持了极低的能量预算。
英文摘要
This work introduces an indoor Battery-Free Wireless Sensing Node powered through radiative Wireless Power Transfer (WPT). The proposed platform targets secure, energyefficient active sensing and overcomes key limitations of many prior battery-free approaches, which commonly provide neither on-node computation nor cryptographic protection. The node combines temperature, humidity, pressure and Volatile Organic Compound (VOC) measurements with a low-power microcontroller that executes sensor calibration, derives a VOC index, formats the payload, and applies AES-128 encryption before wireless transmission. Energy harvesting and communication are enabled by a 1-bit controlled Backscatter Rectenna (BR), which both scavenges incident RF power and produces an orthogonally polarized backscattered signal for robust polarimetric operation. Experimental results validate reliable multi-sensor readout and encrypted data transfer, while maintaining a very low energy budget for the complete sense-compute-encrypt-transmit cycle.
Journal ref2026 IEEE Wireless Power Technology Conference and Expo (WPTCE), Jul 2026, Halifax, Canada. pp.1-6
