Research on the Application of the Three-dimensional Information Collection System of Digital Discus to the Throwing Technique of the Discus Throwers

The authors developed a suit of the three-dimensional information collection system of digital discus, which has won the national invention patent. This system includes a digital discus, USB connecting line, position machine software and a personal computer. The digital discus is made up of the higher and lower shell, eyelets, circuit boards, accelerometer and angular rate sensor, etc. This system can be used to collect the real-time signals which are sent out during the whole throwing process and can carry out the dynamics analysis. By the synthetical use of both the system and the three-dimensional camera shooting, the research tests 3 excellent male athletes and obtains the result: the three-dimensional information collection system of digital discus is convenient, reliable and accurate. It provides a new way for the technical diagnosis and scientific research of the discus throw program.