A Self‐Powered Basketball Hoop Goal Sensor Based on a Triboelectric Nanogenerator

Real‐time monitoring of successful shots during basketball training is crucial for coaches to assess player performance and formulate training plans. Existing visual monitoring systems are greatly affected by variations in illumination intensity and color differences, resulting in significant detection errors. To address this limitation, this study presents a self‐powered basketball hoop goal sensor based on a triboelectric nanogenerator (TENG). The sensor utilizes the basketball’s gravity to induce friction between internal aluminum and polyimide electrodes, achieving both goal detection and power generation. Experimental results demonstrate that the sensor exhibits desirable measurement characteristics, with output signal voltage and current amplitudes of 5.5 V and 60 nA, respectively. The measurement error is less than 1.5%, and the sensor operates reliably within a temperature range of −20 to 70°C and a relative humidity range of 5% to 95%. Furthermore, the sensor incorporates a power generation function, achieving a maximum output power of 46.5 nW when an external 20 MΩ resistor is connected in series.