School of Physics, University of Electronic Science and Technology of China, Chengdu 611731, China.
Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China.
Biosensors (Basel). 2022 Jan 24;12(2):60. doi: 10.3390/bios12020060.
A novel self-powered wearable motion sensor for monitoring the spiking gesture of volleyball athletes has been manufactured from piezoelectric PVDF film. The PVDF film can convert body mechanical energy into electricity through the piezoelectric effect, and the flexible device can be conformably attached on the hand or arm. The sensor can work independently without power supply and actively output piezoelectric signals as the sports information. The sensor can detect the tiny and fine motion of spiking movement in playing volleyball, reflecting the skill. Additionally, the sensor can also real-time monitor the pulse changes and language during a volleyball match. The self-powered sensors can link to a wireless transmitter for uploading the sports information and building big sports data. This work can provoke a new direction for real-time sports monitoring and promote the development of big sports data.
一种新型自供电可穿戴运动传感器，用于监测排球运动员的扣球动作，它由压电 PVDF 薄膜制成。PVDF 薄膜可以通过压电效应将身体机械能转化为电能，而柔性器件可以贴合在手或手臂上。该传感器无需电源即可独立工作，并主动输出压电信号作为运动信息。该传感器可以检测打排球时扣球动作的微小精细运动，反映技术水平。此外，该传感器还可以实时监测排球比赛中的脉搏变化和语言。自供电传感器可以与无线发射器连接，用于上传运动信息并构建大数据。这项工作可以为实时运动监测开辟新的方向，促进大数据的发展。
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