铅球飞行参数即时反馈系统的研制  

A Study of Real Time Flying Variables Feedback System for Shot Put

作　　者：单信海[1] 金季春[2] 

机构地区：[1]山东师范大学体育学院,山东济南250014 [2]北京体育大学运动生物力学教研室,北京100084

出　　处：《西安体育学院学报》2004年第4期43-46,共4页Journal of Xi'an Physical Education University

基　　金：2001届北京体育大学博士学位论文(部分)。

摘　　要："铅球飞行参数即时反馈系统"利用减影技术,用两个CCD窄缝像机,对铅球飞行轨迹上的两个点的高度与时间实现了实时检测。在给定出手高度的条件下,计算机分别计算出铅球的出手角度、出手速度、最佳出手角度等飞行参数,然后提供一个角度大于或偏于最佳出手角的反馈信息。下一次投掷时,系统能够根据上一次投掷的情况给运动员提供一个建议,即出手角度应该高一点或低一点。实验研究表明,该系统能够做到实时检测、实时反馈,是一台运动员技术训练的理想辅助器材,该设备尤其适合于具有较高水平的铅球运动员。The feedback system was designed by using of two linear CCD cameras and the image-subtraction technique. The heights and the time of two points on the flying trajectory of the shot put after release were detected in real time. Given the release height, the computer then calculated the release angle, the release velocity and the optimum angle. The system made the feedback about the release angle larger or lower than the optimum one. It would give suggestion that in next shot putting, he/she adjust the release angle near to the optimum angle. The experiments showed that the system is helpful for the elite shot putter in technique training.

关 键 词：铅球 飞行参数 即时反馈系统 减影技术 出手角度 技术训练 运动学原理 

分 类 号：G824.1[文化科学—体育训练] G812.6[文化科学—体育学]