https://www.mdpi.com/2079-6374/11/5/147/pdf

A Portable and Flexible Self-Powered Multifunctional Sensor for Real-Time Monitoring in Swimming.

A Self-Powered Portable Flexible Sensor of Monitoring Speed Skating Techniques.

With the rapid development of the Internet of Things (IoTs), big data analytics has been widely used in the sport field. In this paper, a light-weight, self-powered sensor based on a triboelectric nanogenerator for big data analytics in sports has been demonstrated. The weight of each sensing unit is ~0.4 g. The friction material consists of polyaniline (PANI) and polytetrafluoroethylene (PTFE). Based on the triboelectric nanogenerator (TENG), the device can convert small amounts of mechanical energy into the electrical signal, which contains information about the hitting position and hitting velocity of table tennis balls. By collecting data from daily table tennis training in real time, the personalized training program can be adjusted. A practical application has been exhibited for collecting table tennis information in real time and, according to these data, coaches can develop personalized training for an amateur to enhance the ability of hand control, which can improve their table tennis skills. This work opens up a new direction in intelligent athletic facilities and big data analytics.

Light-Weight, Self-Powered Sensor Based on Triboelectric Nanogenerator for Big Data Analytics in Sports

The Beijing Winter Olympics put forward the concept of scientific and technological Winter Olympics. Digital driving and precision training have become the main melody and high-frequency words in the field of sports training. In this context, the monitoring of athletes’ sports
 technology is particularly important. Here, a selfpowered flexible sensor based on T-ZnO/PVDF, PAAM-LiCl hydrogel electrode and FEP is proposed to monitor athletes’ sports technology. Based on the piezoelectric effect, the outputting piezoelectric signal by the selfpowered flexible sensor
 is not only the power supply energy of micro electronic device, but also the biosensor signal. In addition, the hydrogel electrode has the functions of anti-metal fatigue and stretchable flexibility, which can improve the adaptability of human motion machinery. The hybrid of polarized PVDF
 and T-ZnO enhances the overall outputting piezoelectric performance of the sensor. This study provides a new application idea for human mechanical energy storage, motion technology monitoring and the application of flexible portable self-powered sensors.

A Self-Powered Flexible Sensor for Speed Skating Land Technology Monitoring

https://www.mdpi.com/2079-6374/10/7/75/pdf

A Self-Powered Biosensor for Monitoring Maximal Lactate Steady State in Sport Training.

Self-powered wearable sweat-lactate analyzer has been developed for training analysis of rowing. Tetrapodshaped ZnO nanowires are attached onto ordinary textiles to form a device. Based on the coupling of enzymatic reaction (lactate oxidase and lactic acid) and piezoelectric effect,\n the device can be attached to the tester to monitor the driving frequency, rowing distance and sweat lactic acid concentration of the tester in real-time. The relationship between the rowing frequency and physiological state is obtained by monitoring the rowing process of the tester, which\n is helpful to formulate a training plan belonging to the rowing tester. This study provides a new direction for the scientific monitoring of kinematics and accelerates the development of wearable sports equipment.

Self-Powered Wearable Sweat-Lactate Analyzer for Scheduling Training of Boat Race

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Self-Powered Wearable Sweat-Lactate Analyzer for Scheduling Training of Boat Race