Accuracy improvement in motion tracking of tennis balls using nano-sensors technology

被引:0
|
作者
Yan, Shuning [1 ]
Xiang, Chaozong [2 ]
Guo, Li [3 ]
机构
[1] Hubei Polytech Univ, Sports Dept, Huangshi 435003, Hubei, Peoples R China
[2] Coll Phys Educ & Hlth, Chongqing Metropolitan Coll Sci & Technol, Chongqing 402167, Peoples R China
[3] DONGFENG CITRO AUTOMOBILE CO LTD, Mfg Management Dept, Wuhan 430050, Hubei, Peoples R China
关键词
composite beam structure; impact instance; nano-sensors; Tennis ball tracking; OBJECTIVE DEPLOYMENT OPTIMIZATION; FORCED VIBRATION CHARACTERISTICS; FUNCTIONALLY GRADED BEAMS; STRAIN-STRESS GRADIENT; SPRING-MASS SYSTEMS; WAVE-PROPAGATION; FREQUENCY-CHARACTERISTICS; PIEZOELECTRIC ACTUATORS; FORMABILITY; PERFORMANCE;
D O I
10.12989/anr.2023.14.5.409
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Tracking the motion of tennis balls is a challenging task in using cameras around the tennis court. The most important instance of the tennis trajectory is the time of impact and touch the court which in some cases could not be detected precisely. In the present study, we aim to present a novel design of tennis balls equipped with nano-sensors to detect the touch of the ball to the court. In the impact instance, tennis ball receives significant acceleration and change in the linear momentum. This large acceleration could deform a small-beam structure with piezoelectric layer to produce voltage. The voltage could further be utilized to produce infrared waves which could be easily detected by infrared detection sensors installed on the same video cameras or separately near the tennis court. Therefore, the exact time of the impact could be achieved with higher accuracy than image analyzing method. A detailed dynamical property of such sensors is discussed using nonlinear beam equations. The results show that within the acceleration range of tennis ball during an impact, the piezoelectric patches of the nano-sensors in the tennis ball could produce enough voltages to propagate infrared waves to be detected by infrared detectors.
引用
收藏
页码:409 / 419
页数:11
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