Football,as the world ’ s No.1 sport,has developed a new full-offensive and full-defense model today.The offensive and defensive transitions of both teams,the faster and faster pace of offensive and defensive games,and the increasing number of team tactics participating in the game,are bound to This leads to an increase in covert fouls and physical conflicts,resulting in a proportional increase in the probability of player injuries and referee misjudgments.With the continuous innovation and rapid development of technology at this stage,the participation of high-tech technology in sports to assist referees in law enforcement has become a way to defend the fairness and justice of the event,prevent the referees from making unfair judgments on some key penalties,and protect the legality of participating athletes.A means of rights and interests,the VAR(Video Assistant Referee)system is the product of the combination of man and machine in response to this trend.The research mainly adopts the method of literature data,video observation,mathematical statistics,logical analysis,and case analysis.The research methods of the group stage,knockout stage,semi-finals and finals of the 2018 Russia World Cup are based on the VAR system in 64 games.Inspecting and intervening incidents as the research object,the conclusions are as follows: 1)The use of the VAR system has significantly improved the accuracy of the judgment of this World Cup,which is of positive significance for promoting fairness and justice on the green field.2)The intervention method of the VAR system is mainly that the video assistant referee actively communicates with the referee through the headset system.The number of penalties in the court is the highest.The content of the intervention judgment mainly refers to the penalty of penalty kicks;3)The use of the VAR system reduces the occurrence of red card incidents.It also increases the penalty rate of penalty kicks,which has a certain warning effect on athletes’ foul thoughts in the penalty area;4)The positive aspects of the introduction of the VAR system are: to assist the referee to improve the accuracy of the game’s penalty and effectively reduce the number of football items Occurrence of misjudgment and misjudgment;further standardize the range of actions of football players on the field,gradually improve the level of professional ethics,enhance the viewing of TV broadcasts,and actively promote the healthy and sustainable development of football.The downsides are: increasing the pressure of the referee on the court,and the use of some VAR systems disrupts the continuity of the game and affects the rhythm of the game for all players on both sides.5)Through case analysis,it is found that the intervention of the VAR system will adversely affect the psychological mood of the players and the referee on the court,the fluency and viewing of the game.The revision of the VAR system will cause an imbalance in the athletes’ mentality,thereby increasing the referee’s The pressure of law enforcement has caused a decline in the authority of the referees,or caused the referees to rely too much on VAR technology to assist in the judgment,develop an inert law enforcement attitude,and lose their sole right to speak in the game.The suggestions are as follows: 1)It is necessary to gradually update and improve the use rules of the VAR system,so that the relevant rules of the VAR system are coordinated with the general rules and regulations of football;2)The coaches should actively learn the relevant rules and systems,strengthen business training,and use the VAR system rationally.To assist in the judgment to ensure the smoothness and viewing of the game,and to maintain a good game environment;3)From the perspective of players and coaches,under the premise that the initiative to apply for challenge permissions has not been opened at this stage,it should be controlled when disputes arise.Use the VAR system intervention time rationally for your own emotions;4)All video assistant referees in the VAR system should coordinate and cooperate in a timely manner to increase tacit understanding and reduce the use time of the VAR system;5)FIFA should update the VAR system software,hardware and system in a timely manner Algorithms,reduce the maintenance cost of VAR system facilities,and use technological advances to promote the orderly development of football. |