Design And Realization Of The Intelligent Scoring System Of Table Tennis

Electronic timing and scoring device is one of the important equipment to record the time and score of the game.Playing table tennis a fast-moving sport about the movement of body because rely on the naked eye is not certain to quickly and accurately judge.Not only the cost of human judgment,has the disadvantage of poor objectivity of human.Still,there is no scientific way to judge.High sensitivity accelerometer application in this design are distributed symmetrically on the side of the table can greatly improve the poor subjective of the problem of people.To meet the demand of no referee scoring occasions,make table tennis scoring more convenient,rapid,accurate and unambiguous,which has the advantages of simple structure,convenient use,and bring more enjoyment to the user.This design uses adxl335 ADI acceleration sensor,which transfers acceleration signal of table tennis ball percussion table into electrical signals,collects a large number of target signal.Study on transient signal detection algorithm,analyzes the characteristics of the signal,and feasibility of the scheme was proved.The signal acquisition of signal was amplified and elevated before entering the main control chip MSP430F149.It mainly includes the design of hardware circuit,software development,hardware debugging,finally the digital tubes display the score of table tennis.The system realizes the schedule time setting,instant refresh both grades.The performance of signal conditioning circuit for a final test,in the analysis of various performance tests,the whole system test,laboratory and field test of hardware platform all work correctly,show that the design meets the design requirements of the system.Realize the hardware and software of the expected function scoring system of table tennis.In addition it can also make the game more tend to be fair,standardized,and reduce the friction and unhappiness caused by things in the game.This system has the advantages of simple operation,convenient installation,and has the advantages of low cost,stable performance and easy portability,which can be widely used in schools or small groups in the game to complete the timing function.