Study On Key Technology Of Badminton Objective Auxiliary Referee System With Fiber Array

At present, badminton referee system is completely subjective, and the location of the badminton's impacting point is entirely dependents on the observer's judgment with their eyes, so dissensions appear often in badminton referring. Even with the video playback, it is hard to determine the precise impacting point, since it also depends on observing the image by human eyes.Because of the difficulty of distinguish whether the ball is outside the boundary line or not in the badminton game, the paper puts forward an objective auxiliary badminton referee system with fiber array, which could objectively and accurately detect the precise point of contact between the movement ball and boundary line. There are mainly four parts in this system, including laser fiber coupling, optical fiber transmission, detection and signal acquisition and processing.In this paper, we mainly study the key technologies of badminton objective referee system, including system principle, structure design and experiment to verify the system. The paper does some researches as follows:1. Summarize a mass of information on distinguishing whether the ball is outside the boundary line or not in the badminton game, introduce and compare the various ways of distinguishing. Basing on them, we design the fiber array badminton objective referee system.2. Analyze the principle of the system, make sure the main framework of the fiber array badminton objective referee system and design the structure of the various parts in the system.3. After lots of simulations and experience, we statistic size of interface between badminton and ground. And then fiber array layout is the determined.4. With the image processing software basing on Visual C++, we use related computer image processing technologies to do some analysis.5. Design the system experimental project, complete the convex lens single-detector experiment, the direct detection of optical fiber and optical fiber array detection verification experiment. The experimental results meet expectations, certificate possibility of system's detection.The badminton objective auxiliary referee system with fiber array is low cost, high precision, easy to promote, it can be objective, accurate and quick determination of the landing location of badminton, it has important significance for the fairness penalty of badminton competition.