Flexible and wearable hydrogel-based triboelectric nanogenerator for self-power sensing in boxing match

Abstract

Real-time monitoring of the interaction between boxing gloves and protective gear can provide extremely important information for high-quality guidance of the individual fighting training. However, the existing visual monitoring system is difficult to reflect the specific interaction force and the accurate hit position. Here, we designed a self-powered hydrogel-based triboelectric nanogenerator for real-time monitoring of combat training and rule judgment. The triboelectric nanogenerators with this unique structure can be manufactured on a large scale through a simple process. As a result, the developed sensor exhibits excellent sensitivity (0.93 uA/N•S) and ultra-fast response time (21 ms). On this basis, we made a 2×4 combat protective gear, which can obtain the strike position and punch speed in real time, and provide assessment and personal guidance for the athletes’ training. It is true that this work has not only opened up a new way to surpass the existing visual detection system for the real-time monitoring of the strike position and punch speed in combat training or competition, but also opened up a new way for the development of artificial intelligence electronic technology to intelligent sports.