The Research Of Dynamic Force Measurement System

Board-beating force means the acting force on the ground during the moment of take-off for the high jumper. The purpose of the dynamic measurement for board-beating force is to obtain the changing real-time data and the curves. Based on a series of real-time data and the changing curves, the variation law of board-beating force can be can be found and used. Moreover, compared measured data on board-beating force with corresponding tests performance, it can be analyzed and obtained that which kind of change law of board-beating force has effect on enhancing the sports performance. Depending on these best change curves, the trainer may draw up exercise prescriptions, which vary with each individual in the training. For example: how to accomplish decomposition movements, how to adjust take-off posture. Therefore, this measuring has deep meaning in actual using value.This paper has mainly carried on the research from the following several aspects in order to realize dynamic measurement for board-beating force. Firstly, the design scheme of strain gauge force platform has been analyzed and proposed theoretically, which can collect vertical components of board-beating force. Secondly, based on the microcomputer C8051F020, middle data acquisition link was built, which can complete the analog-to-digital conversion for analog obtained from the sensor and realize the acquisition and transmission for data. Finally, with Delphi software and SPComm control, the function of data transmission, data management and curve drawing in PC were all realized. In this paper, the design proposal of force platform for vertical components of board-beating force was put forward, and the theoretical analysis was processed by strength theory of material science and the related theory of mechanical vibration science.This system can realize the dynamic measurement for vertical components of board-beating force. Besides the design conception and method of this system has certain reference value for other similar dynamic measurement systems.