With the development of the Internet of Things (IoT), the requirement of wireless sensing operations is becoming increasingly desirable. Most of the current active wireless sensors require external power suppliers and complex active circuits, which limits their applications. A passive wireless sensor is a desired alternative. Hence, a passive wireless triboelectric sensor (PWTES) without active electronic components, a battery, or an energy harvester is proposed to meet the further demand for wireless monitoring. The key component of the PWTES is a surface acoustic wave resonator (SAWR). The sensing signal generated by the triboelectric nanogenerator (TENG) is applied to modulate the SAWR's response signal via a tuning network. A designed reader interrogates the SAWR and receives its response via the radiofrequency link, then demodulation is performed on the SAWR's response to obtain the sensing signal. Employing the designed PWTES, a wireless pressure sensor without a battery and an energy harvester is successfully demonstrated. The PWTES exhibited the wireless transmission of a sensing signal over a distance of 2 m, a sensitivity of 23.75 kHz/V within the TENG's voltage range of 0–5 V, and a measurement update rate of 12 kHz. The PWTES makes full use of the advantages of the TENG in sensing, and the properties of the SAWR in wireless communication, holding great potential for the miniaturization, integration, and continuous monitoring of wireless sensors in the era of the IoT.

随着物联网（IoT）的发展，对无线传感操作的需求变得越来越迫切。当前大多数有源无线传感器都需要外部电源和复杂的有源电路，这限制了它们的应用。无源无线传感器是理想的选择。因此，提出了无有源电子组件，电池或能量收集器的无源无线摩擦电传感器（PWTES），以满足无线监控的进一步需求。PWTES的关键组件是表面声波谐振器（SAWR）。摩擦电纳米发电机（TENG）产生的传感信号通过调谐网络应用于调制SAWR的响应信号。设计阅读器询问SAWR并通过射频链路接收其响应，然后对SAWR的响应进行解调以获得感测信号。使用设计的PWTES，成功演示了不带电池和能量收集器的无线压力传感器。PWTES展示了在2 m的距离内无线传输感测信号，在TENG的0-5 V电压范围内的灵敏度为23.75 kHz / V，测量更新率为12 kHz。PWTES充分利用了TENG在传感方面的优势，以及SAWR在无线通信中的特性，为物联网时代的无线传感器的小型化，集成和连续监控提供了巨大潜力。成功演示了无电池和能量收集器的无线压力传感器。PWTES展示了在2 m的距离内无线传输感测信号，在TENG的0-5 V电压范围内的灵敏度为23.75 kHz / V，测量更新率为12 kHz。PWTES充分利用了TENG在传感方面的优势，以及SAWR在无线通信中的特性，为物联网时代的无线传感器的小型化，集成和连续监控提供了巨大潜力。成功演示了无电池和能量收集器的无线压力传感器。PWTES展示了在2 m的距离内无线传输感测信号，在TENG的0-5 V电压范围内的灵敏度为23.75 kHz / V，测量更新率为12 kHz。PWTES充分利用了TENG在传感方面的优势，以及SAWR在无线通信中的特性，为物联网时代的无线传感器的小型化，集成和连续监控提供了巨大潜力。