Dimensional Dynamometer Shot, Developed And Measured

The shot put movement is one kind of velocity force mould movement item that takes velocity as the core takes force as the base .One phase of splendid history had been undergo in Chinese female shot put movement. The definition of "Chinese shot put technique" was arising at one time in the world. Yet the achievement of shot put has been to let down entirely. Because the training measure is unitary and reservation talented person is fault. The shot achievement of male has differences between greatly far away against the international level , How to change this kind of state at the moment .In order to make shot putters of Chinese treadle the table that receives a gold medal in the sports ground of track and field in the world. The most pressing matter of the moment is will train through the scientific knowledge, Genuinely achieve the strategy slogan about "Ask for the gold medal to the science and technology".In order to adapt to this kind of demand at the moment. Improve the tradition training and rating measure . Start off resolving the difficulty and key spot of the movement training practice. Apply the idea and measure of contemporary science and technology. Integrate the well-developed and scientific knowledge training means. Improve the scientific training and movement athletics level of Chinese athletes. Moreover positively answer the appeal about " Science and technology Olympic Games " proposed by our country. Stress to launch the research of scientific supervision about training and collect training message and research of the analytic system. With the only idea of making high science and technology produce unites the sports specific appliance. We jointed with robotic sensor laboratory of Institute of intelligent machines, Chinese Academy of Sciences and preparing a shot of three dimensions force testing which being used in the shot put education and training and scientific research. It can be collected tothree dimensions mechanics message in each phase of total throwing process. This system adopts the mature pressure sensor technique and uses relatively wide-ranging microcomputer processing system at the moment . By means of uniting the sports specific appliance shot achieved the dynamic force measurement of limb tip extremity during the actual movement. In addition provides comparatively richer the software process system , It can be speedily and conveniently and exactly feedback exertion feature of athletes during the entire throwing process. It may help the coach to carry on the technique diagnosis to athletes and draw up scientific training program .The system is verified by means of static state loading . The measure error of this three dimension force testing shot is be smaller than 5%. Through the comparison research of shot putters, this system can meet the demand of practice testing. After tested over two grades male shot putters . We acquired the relatively satisfactory result .The force curve that by means of uniting the movement image is analysed during the whole process of shot putting. Conclusions : (1)The force curve and the velocity changes tendency of the shot are essentially unanimous during the integrated shot putting process. The curve of resultant forces presents "Twin top moulds" during the putting shot and lashing of the finally exerted throwing. (2)The first top force arose in the instant of treadling and revolving by the right leg. When athletes ' body turn into the throwing orientation from the side . The second top force arose in the instant of shot departs from the collarbone nest of athletes, and elbow joint angle is at 90° around.