Remote Evaluation System of Tennis Batting Action Standard Based on Acceleration Sensor

Abstract

This paper studies the remote evaluation system of tennis batting action standard based on acceleration sensor, which aims to help improve the standard degree and technical level of tennis batting action. The system includes a data acquisition module to collect original signal data of tennis batting action by the acceleration sensor signal acquisition device in the bracelet and upload to the personal computer (PC) for storage, data preprocessing module to smooth original signal data and extract the key time and frequency domain features as the evaluation basis, and remote evaluation module to assess tennis batting action standard. We applied our system to five tennis trainees from the experimental university, and the results show that the batting action standard level of student c and student e is lower. Student c is weak mainly in the best position of the hitting point and the timing of the lead shot, while student e mainly shows poor performance in the timing of movement and the stability of the overall center of gravity. Compared with the proposed system or device, our system has a short real-time delay under the concurrent use of different types of users indicating stable and high real-time evaluation performance. More importantly, our system strictly protects the user’s privacy when uploading the user’s data remotely. In short, the evaluation results obtained by our system can be used as a scientific basis to improve the tennis batting action standard.

Walking Position Data in Football Training Based on Embedded Action Recognition System

“…Players only need to wear segment points with sensors, and they can connect to the network normally in any corner of the field and transmit sensor data to co, which is responsible for identifying different terminal segment points and different types of sensor data. In the end, co will transmit the aggregated information with the identification of each athlete to the terminal through the serial port in real time for display [9]. On the contrary, the terminal can also send instructions to the co in real time, such as suspending the data transmission of a certain segment or speeding up the data transmission of a certain segment.…”

Retracted: Remote Evaluation System of Tennis Batting Action Standard Based on Acceleration Sensor

“…Tis article has been retracted by Hindawi, as publisher, following an investigation undertaken by the publisher [1]. Tis investigation has uncovered evidence of systematic manipulation of the publication and peer-review process.…”