A self-powered, process-oriented wireless sensor with high discharge signal density

Constructing sensor nodes with high sensing accuracy, wireless transmission capabilities, and independence from power sources presents a significant challenge. Here, we develop a self-powered wireless sensing scheme with ultra-high signal density. By generating a continuous discharge breakdown signal flow based on the triboelectric effect and coupling it with a pair of inductive coils, we obtain a remarkably dense wireless transmission segment, with 311 signal counts within a single slide (1 Hz); this represents a significant enhancement in sensing signal density compared to existing devices. Our system is designed to capture the entirety of the mechanical motion process and achieves an excellent effective wireless transmission distance (>100 m). This research breakthrough provides a viable solution for developing self-powered wireless sensing with high accuracy and long-distance transmission.