Shuttlecock drop point judging device and method

Abstract

The invention discloses a shuttlecock drop point judging device and method. The device comprises a pressure sensing layer used for detecting the falling point of a shuttlecock, an electromagnetic induction layer used for sensing the approach of the shuttlecock, a magnetic substance arranged on the shuttlecock, a signal processing system and a judgment result output module, wherein the pressure sensing layer and the electromagnetic induction layer are arranged on a playground to form a sensing area; when the shuttlecock body falls into the induction area, the electromagnetic induction layer transmits an induced current signal to the signal processing system; when the shuttlecock body falls into the sensing area, the pressure sensing layer transmits a first falling point position signal of the shuttlecock body to the signal processing system; and the signal processing system is used for receiving signals of the pressure sensing layer and the electromagnetic induction layer, carrying outdrop point judgment and transmitting a judgment result to the judgment result output module. According to the technical scheme, the falling point of the shuttlecock can be accurately judged, whether the shuttlecock is out of bound or not is automatically judged, fairness and objectivity during competition are improved, competition cost is reduced, and healthy development of the badminton industryis promoted.

Description

technical field [0001] The invention relates to a position judging device, in particular to a ball drop point judging and scoring device and method. Background technique [0002] In many ball games, it is basically necessary to determine the landing point of the ball to determine whether to score, and it often happens that the landing point is located near the boundary line and is difficult to distinguish. The traditional method of judging the landing point relies on manual labor, requires more referees, and is not accurate enough. For example, in the traditional badminton game, there are the following problems: 1. The two-person game also needs as many as 13 supporting personnel such as referees, which is six times as many as the players in the game, and the high cost can be imagined. In this state, it is not difficult to imagine that it has seriously restricted and affected the development of the sport. 2. Judgment of the ball's drop point during the game mainly depends ...

AI Technical Summary

Problems solved by technology

The traditional method of judging the landing point relies on manual labor, requires more referees, and is not accurate enough

For example, in a traditional badminton game, there are the following problems: 1. The two-person game also requires as many as 13 referees and other supporting personnel, which is six times as many as the players in the competition, and the high cost can be imagined

Therefore, there are often misjudgments and inconsistent judgments between athletes and referees, and then verify the correctness of judgments in the form of Hawkeye video. According to regulations, there are only 3 chances, which is a very troublesome and time-consuming method. , seriously affect the emotions of the athletes and affect the smooth progress of the game

3. There is only manual scoring method, no automatic scoring and real-time automatic display of scoring technology. In the absence of referees, the phenomenon of "misremembering scores" often occurs in games, which not only affects the fairness of the game, but also Affects the athlete's mood

Its shortcomings are: 1. Since the judgment of whether the ball is out of bounds is determined by the position where the ball lands for the first time, if the ball lands in the bounds for the first time and then rolls to the alarm board, it will also cause a short circuit between the two electrodes. Therefore, it is misjudged as out-of-bounds, and there is a judgment error; moreover, when the ball lands at the transition position between the field boundary and the alarm board, the ball may touch the boundary line and the alarm board at the same time, which will also cause a short circuit between the two cross electrodes, and the ball is considered out-of-bounds, but In the actual penalty, if the ball presses to the boundary line, it should be regarded as within the bounds, which will also lead to penalty errors; 2. In order to be able to contact and conduct with the conductive sensing material on the ball, the printed circuit of the alarm board is exposed. It is easy to be damaged due to wear, impact and other factors, and the reliability is not high

Its disadvantages are: 1. Due to the use of electromagnetic induction to judge the landing point of the shuttlecock, as long as the head of the shuttlecock with a hard magnet is close to the coil, an induced current can be generated, and the judgment of the landing point of the shuttlecock requires the head of the shuttlecock The position where the head touches the ground first, so there will be misjudgment. For example, when the head of the shuttlecock is approaching the ground, it may have triggered the induction coil at the corresponding position when it is about to touch the ground. Due to the induced current generated at this time After being detected, the single-chip microcomputer no longer receives the induced current from the back, thinking that this part is the landing point. In fact, the head of the badminton will continue to move and then touch the ground. If the touch point and the induction coil that first generates the current are just inside and outside the boundary line , it will be mistaken as being in the bounds, resulting in misjudgment; 2. When the shuttlecock lands between two adjacent induction coils, both induction coils may generate an induced current, which will cause multiple diodes to emit light at the same time, which cannot be accurately detected. Judging where the badminton falls

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