A Self-Powered Sport Sensor Based on Triboelectric Nanogenerator for Fosbury Flop Training

Abstract

Due to the high efficiency of low-frequency mechanical energy harvesting, wearable and flexible self-powered sport sensor based on triboelectric nanogenerators (TENGs) have become the hot research topic. Thus, we report a flexible and wearable cotton fabric (CF) coated with carbon oil- (CO-) based TENG (CC-TENG) with low processing costs, good electrical properties, and long working life. Meanwhile, we use a piece of flexible, microfibre-woven CF as the substrate for the CO. Moreover, the fibre surface characteristics of the cotton fabric provide higher surface roughness, which can make the TENG device work better. In detail, the CO layer serves as the triboelectric material and conductive electrode. According to the results, the CC-TENG shows good reliability, and the electric energy generated by CC-TENG can drive low-power electronic devices. Significantly, CC-TENG device can be applied to fosbury flop training to obtain training data and motion information monitoring, which will promote the wearable intelligent sports device.