Safety relay selection algorithms based on fuzzy relationship for wireless sensor networks

Feng, Tung-Huang; Shih, Neng-Yih; Hwang, Min‐Shiang

doi:10.1007/s11227-018-2547-7

Cited by 1 publication

(1 citation statement)

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“…In the actual volleyball competition, if the players lack the ability of selfprotection and adaptability, the wrist force is too large when making the volleyball spiking action, it is easy to cause the problem of upper limb joint movement. e trajectory extraction technology of volleyball spike action is introduced, and real-time analysis of spike action state information is carried out to reduce the loss rate of the game and improve the quality of the game [4]. Volleyball spiking trajectory extraction has become an important factor restricting the technical level of volleyball, which has attracted the attention of many experts and scholars.…”

Section: Introductionmentioning

confidence: 99%

An Extraction Method of Volleyball Spiking Trajectory and Teaching Based on Wireless Sensor Network

Wang

Liang

2021

Security and Communication Networks

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It is helpful to analyze volleyball spiking technology and improve spiking quality to extract volleyball spiking trajectory. This article studies the extraction method and teaching method of volleyball spiking trajectory based on a wireless sensor network. The acceleration sensor and gyroscope sensor are used to collect the spiking action state information of volleyball players. The collected information is transmitted to the PC terminal through the wireless sensor network, including physical layer, data link layer, network layer, transmission layer, and application layer, using the LEACH clustering routing protocol algorithm. In the PC terminal, the feedback filtering method is used to preprocess the received information and calculate the integral of each sensor node’s acceleration, connecting the spatial coordinates of each time to obtain the upper limb trajectory in three-dimensional space and realize the trajectory extraction of volleyball spike action. The experimental results show that the position error is less than 0.01 m and the speed error is less than 0.15 m/s. The application of this method in volleyball teaching can effectively improve the quality of volleyball teaching.

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Section: Introductionmentioning

confidence: 99%