WO2015113488A1 - 乒乓球触台感应器、乒乓球比赛裁判系统 - Google Patents
乒乓球触台感应器、乒乓球比赛裁判系统 Download PDFInfo
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- WO2015113488A1 WO2015113488A1 PCT/CN2015/071641 CN2015071641W WO2015113488A1 WO 2015113488 A1 WO2015113488 A1 WO 2015113488A1 CN 2015071641 W CN2015071641 W CN 2015071641W WO 2015113488 A1 WO2015113488 A1 WO 2015113488A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/004—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring coordinates of points
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0023—Measuring of sport goods, e.g. bowling accessories, golfclubs, game balls
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
- A63B71/0605—Decision makers and devices using detection means facilitating arbitration
- A63B2071/0613—Automatic net-fault detectors
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
- A63B2102/16—Table tennis
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2220/00—Measuring of physical parameters relating to sporting activity
- A63B2220/50—Force related parameters
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
- A63B71/0605—Decision makers and devices using detection means facilitating arbitration
Definitions
- the invention relates to a referee assisting device for table tennis matches.
- the table tennis competition is still relying on the referee's own observation and experience to judge the score. Basically, there is no scientific technology and instruments to provide objective factual data in real time to assist in judgment. To provide scientific and technical support for referees, we must first be able to sense the situation of table tennis contact with the table and the net.
- the technology of table tennis contact net has been detailed in a Chinese utility model patent (ZL 2013 2 0040691.9).
- the present invention relates to a technique for sensing a table tennis contact table and using the two techniques to develop a detectable serve net. The situation and the electronic referee system that judges the score of the game.
- the situation of table tennis contact with the table can be divided into the collision level of the table and the edge of the table (ie, the edge).
- the former is easy to detect and occupy the majority, the latter is also very common, and once it occurs, it is difficult to detect and often cause
- the difference between the player and the referee is that the change in the trajectory of the ball caused by the ball touching the edge of the table is very small, and the sound produced is very weak. Not only is the eyes and ears difficult to detect clearly, but different people will have more Different judgments have led to controversy. There is still no technology or product in the world to solve this problem, but only based on the personal subjective judgment of the referee.
- the ear As for the method of sensing the sound of table tennis to touch the table, the ear is still used, but the referee and the hitting party are far from the touch point of the table, and it is difficult to determine whether the ball touches the table.
- the ideal table tennis touchpad sensor should be simple to use, sensitive and accurate, low power consumption, no interference with the game equipment and players, and quick and real-time judgment.
- One of the objects of the present invention is to provide a table tennis touchpad sensor that can solve the problem of detecting whether the ball touches the table and cannot determine the position of the table tennis landing point.
- Another object of the present invention is to provide a table tennis match referee system which can solve the problem that it is impossible to judge the table tennis serve and the automatic judgment score.
- the third object of the present invention is to propose a table tennis match referee system which can solve the problem that the table tennis landing point cannot be judged.
- a table tennis contact sensor comprising at least two piezoelectric sensors mounted on a side edge or bottom or inside of a table tennis table and a judging module, two of the nets of the table tennis table Each side has at least one of the piezoelectric sensors; each piezoelectric sensor has an identification;
- the piezoelectric sensor is configured to obtain a vibration signal generated by a table tennis table due to a collision of table tennis balls;
- the determining module is configured to compare the intensity or the generation time of the vibration signals respectively acquired by the at least two piezoelectric sensors, and determine the position of the table tennis on the table tennis table according to the comparison result.
- the table tennis contact sensor further comprises a filter amplifier equal in number to the piezoelectric sensors, each piezoelectric sensor being connected to the determination module via a corresponding filter amplifier; the filter amplifier for The vibration signal conforming to the vibration frequency of the table tennis table is subjected to signal amplification processing.
- the number of the piezoelectric sensors is an even number, and an even number of piezoelectric sensors are symmetrically distributed on both sides of the net with the net as an axis of symmetry.
- the number of piezoelectric sensors is an odd number.
- a table tennis match referee system comprising a table tennis touch table sensor as described above, at least one touch net sensor, a power supply module, a result output module and a processing module;
- the catenary sensor is configured to acquire a shift signal generated by a collision of a table tennis ball by a table tennis ball;
- the processing module is configured to: according to the falling point position and the shift signal, driving the result output module to perform one of a state prompt of retransmission, a left score of a table tennis table, and a right score of a table tennis table;
- the power module is configured to provide a working voltage for the table tennis referee system.
- the number of the catenary sensors is two or more, and the catenary sensors are evenly distributed along the length direction of the net.
- the result output module is a display module or a voice module.
- the processing module is further connected to a mode switch for selecting a semi-automatic mode and a fully automatic mode.
- a preliminary state switch for prompting the player to prepare for the serve.
- the processing module is further connected with a preparatory state switch for driving the result output module to output a prompting player to prepare a service indication.
- a table tennis match referee system comprising a table tennis touch-table sensor as described above, a power supply module, a result output module, a processing module and a drop-point follower switch;
- the processing module is configured to: when the landing point following switch is started, according to the position of the falling point, the driving result output module continuously prompts the falling point position;
- the power module is configured to provide a working voltage for the table tennis referee system.
- the piezoelectric sensor senses the slight vibration of the table, the volume is small, the sensitivity is high, and the table is not disturbed, and the game is not hindered.
- FIG. 1 is a schematic structural view of a table tennis match referee system according to a first embodiment of the present invention (including a table tennis touchpad sensor);
- FIG. 2 is a circuit block diagram of a table tennis match referee system according to Embodiment 1 of the present invention
- FIG. 3 is a schematic structural diagram of a table tennis match referee system according to Embodiment 2 of the present invention.
- FIG. 4 is a schematic structural diagram of a table tennis match referee system according to a third embodiment of the present invention.
- FIG. 5 is a schematic structural diagram of a table tennis match referee system according to Embodiment 4 of the present invention.
- FIG. 6 is a schematic structural diagram of a table tennis match referee system according to Embodiment 5 of the present invention.
- a table tennis match referee system includes a table tennis touchpad sensor, a catenary sensor 7, a power module 11, a result output module 6, a processing module 4, a mode switch 9, and a standby state. Switch 5.
- the table tennis touchpad sensor comprises eight side edge piezoelectric sensors 3 mounted on the table tennis table 1, eight filter amplifiers 8 and a judging module 10.
- the two sides of the net 2 of the table tennis table 1 have one of the piezoelectric sensors 3.
- the specific position of the piezoelectric sensor 3 may be close to the edge of the table tennis table 1 and close to the bottom surface of the table tennis table 1.
- Each of the piezoelectric sensors 3 has an identifier for providing a calculation basis for the determination module 10 to calculate the position of the drop point. If the position of the drop point is a coarse position (left half or right half), the identifier may be left and right. , that is, the identification of the piezoelectric sensor 3 of the left half of the table can be the pressure of the left and right half tables.
- the identifier of the electrical sensor 3 may be right. If the location of the drop point requires a precise position, the identifier may be a unique identifier.
- the number of the four piezoelectric sensors 3 on the left side of the table tennis table 1 is 001, 002, respectively. 003, 004, the four piezoelectric sensors 3 on the right are numbered 005, 006, 007, and 008, respectively.
- Each piezoelectric sensor 3 is connected to the determination module 10 via a corresponding filter amplifier 8.
- the eight piezoelectric sensors 3 are symmetrically distributed on both sides of the net 2 with the net 2 as an axis of symmetry.
- the piezoelectric sensor 3 may be fixed by a bonding glue, a tape, a screw, or the like, and the piezoelectric sensor 3 may be closely covered with a sound insulating material in order to prevent external sound interference.
- the piezoelectric sensor 3 is used to acquire a vibration signal generated by the table tennis table 1 due to the collision of the table tennis ball.
- the filter amplifier 8 is configured to amplify the vibration signal corresponding to the vibration frequency of the table tennis table 1 , and other electronic noises that do not meet the vibration frequency of the table tennis table 1 are filtered to eliminate interference.
- the judging module 10 is configured to compare the strengths of the vibration signals respectively acquired by the eight piezoelectric sensors 3 (may also compare the generation time, the detailed principle description is described below), and judge the ping pong according to the comparison result.
- the ball is at the landing position of the table tennis table 1.
- the catenary sensor 7 is configured to acquire a shift signal generated by the net 2 due to the collision of the table tennis ball.
- the number of the catenary sensors 7 may be one or plural, and if plural, it may be evenly distributed along the longitudinal direction of the net 2 .
- the touch screen sensor 7 is a prior art, and will not be described here. The structure, installation and principle can be seen in the "ball game" of the Chinese utility model patent No. 201320040691.9.
- the touch screen sensor 7 of the present embodiment may also be an inductor of other structure and type as long as it can sense that the net 2 is displaced due to vibration.
- the processing module 4 is configured to: according to the falling point position and the shift signal, drive the result output module 6 to perform retransmission, one of the left score of the table tennis table, and the right side of the table tennis table.
- the result output module 6 can be a display module or a voice module. If it is a display module, it can be composed of four LEDs, two of which are used for scoring status prompts, and one LED is used for resending status prompts. If it is a voice module, it can be re-issued by the voice prompt, the left side of the table tennis table and the right side of the table tennis table.
- the power module 11 is configured to provide an operating voltage for the table tennis referee system.
- the preparatory state switch 5 can be taken by the referee for driving the result output module 6 to output an indication that the player is ready to serve the ball. For example, another LED of the display module is illuminated (driven by the processing module 4) for reminding The player is ready.
- the mode switch 9 is configured to select a semi-automatic mode and a fully automatic mode.
- the LED for reminding the player to prepare is not automatically illuminated, and is controlled by the standby state switch 5; when the automatic mode is selected
- the preset teeing state is entered according to the preset time (for example, 6 seconds), and the corresponding LED is lit.
- the filter amplifier 8, the determination module 10, the processing module 4, the mode switch 9 and the power supply module 11 can constitute a control box which is mounted at the bottom of the table tennis table 1.
- the output module 6 can be mounted on the side of the net 2 or integrated with the control box.
- the preparatory state switch 5 can be constructed as a remote controller or integrated with the control box.
- Piezoelectric material is characterized in that when subjected to pressure, an electric field and a voltage are generated at both ends. Since the vibration is a cyclically varying pressure, the piezoelectric material can be subjected to a cyclically varying voltage, that is, an alternating voltage.
- a sensor made of a piezoelectric material i.e., the piezoelectric sensor 3 is in close contact with the table tennis table 1, so that the slight vibration of the table tennis table 1 caused by the table tennis table tennis table 1 and the edge of the table tennis table can be sensitively sensed. And convert it directly into an AC voltage.
- One of the features of this embodiment is that according to the time sequence in which the different piezoelectric sensors 3 sense the vibration of the table tennis table 1, the table tennis table 1 is judged to be the left or right half of the table tennis table 1 (with the net 2 as the boundary), and the principle is the table tennis table.
- the vibration of 1 originates from the table tennis falling point, and the mounting position of the piezoelectric sensor 3 of the left and right half of the table is symmetrical with respect to the net 2, so a piezoelectric sensor 3 closest to the landing point must be in the stage.
- the half-side table where the point is located, and this piezoelectric sensor 3 is also the first one to sense the vibration.
- the judging module 10 detects that one of the piezoelectric sensors 3 numbered 001 to 004 first senses the vibration, it can determine that the ball touches the half table on which it is located (ie, the approximate landing position of the table tennis), and vice versa.
- the piezoelectric sensors 3 numbered 005 to 008 first senses the vibration, it is determined that the ball touches the other half of the table.
- the judging module 10 can calculate the accuracy of the drop position more accurately.
- Position the principle is that the time when the vibration reaches the piezoelectric sensor 3 and the landing point are proportional to the distance between the piezoelectric sensor 3, and the four piezoelectric sensors 3 on one side of the landing point will sense the vibration successively, so according to each piezoelectric
- the sensor 3 senses the sequence and time difference of the vibration, and the mathematical equation can be used to calculate the difference between the different distances between the landing point and each piezoelectric sensor 3 and the accurate position of the table tennis.
- the ping-pong point is the source position, the position of the source will cause different piezoelectric sensors 3 to sense different vibration strengths, that is, the voltage intensity is different. Therefore, the intensity of the vibration or voltage signal can also be calculated. Falling position.
- the catenary sensor 7 transmits the shift signal of the table tennis touch net 2 to the processing module 4.
- the processing module 4 can make a judgment based on the ball example based on the fact that the table tennis has a touch of the net and the position of the drop point on the left or right half of the table.
- Example 1 In the state of preparing for the sensory serve, first sense that the ball is placed on the left side, then touch the net, and then drop it on the right side, it can be judged that the tee touch net must be re-transmitted.
- Example 2 In the state of preparing for the sensory serve, first sense that the ball is down on the left side, then touch the net, and then fall on the left side, you can judge that the serve is off the net and the right side scores.
- Example 3 In the state of preparing for the sensory serve, first sense that the ball is down on the left side, then drop it on the right side, and then drop it on the right side, then it can be judged that the ball is missed and the left side scores.
- the difference between this embodiment and the first embodiment is that the number of the piezoelectric sensor 3 and the filter amplifier 8 is different, and the number of the piezoelectric sensor 3 and the filter amplifier 8 of the present embodiment are both two.
- the position of the drop point judged by the judgment module 10 is rough, and the judgment result is left and right.
- the difference between this embodiment and the second embodiment is that the positions of the two piezoelectric sensors 3 are asymmetrical, and the algorithm of the judging module 10 is reset according to the positions of the two piezoelectric sensors 3.
- the difference between this embodiment and the first embodiment is that the number of the piezoelectric sensor 3 and the filter amplifier 8 is different, and the number of the piezoelectric sensor 3 and the filter amplifier 8 of the present embodiment is three.
- the three piezoelectric sensors 3 are not symmetrically arranged, and therefore, the algorithm of the judging module 10 is reset according to the positions of the three piezoelectric sensors 3.
- the piezoelectric sensor 3 of each of the above embodiments can also be mounted at the bottom or inside of the table tennis table 1 for the purpose of not disturbing the table tennis running line.
- the piezoelectric sensor 3, the filter amplifier 8, the determination module 10, the processing module 4, the catenary sensor 7, the result output module 6, and the preparatory state switch 5 may be wired or wirelessly connected.
- the determination module 10 can also be integrated with the processing module 4.
- a table tennis match referee system includes a table tennis touch table sensor, a power module 11, a result output module 6, a processing module 4, and a drop point follower as in the first embodiment.
- the processing module 4 is configured to continuously prompt the landing result position according to the falling point position when the landing point following switch 12 is activated.
- the power module 11 is configured to provide an operating voltage for the table tennis referee system.
- the result output module 6 may include two LEDs, both facing the referee, and separating the left and right sides, corresponding to the left half and the right half.
- the landing follower switch 12 can be a software program built in the processing module 4, which is preset by the manufacturer, or the landing follower switch 12 is an external switch button.
- the table tennis touch sensor senses the vibration and determines the position of the table tennis falling point, whether it is the left half or the right half, and then the processing module 4 drives the corresponding LED to follow the falling position according to the falling position, for example
- the processing module 4 drives the corresponding LED to follow the falling position according to the falling position, for example
- the LED on the left side lights up once.
- the LED on the right side lights up once, and the two LEDs continuously follow the position of the falling point.
- the function is to provide reference for the referee when he suspects that the table tennis has rubbed the edge.
- the system of the embodiment does not judge the score side according to the ball example.
- the result output module of each of the above embodiments may also be an external computer, and the referee can judge the result of the location of the drop point through the external computer.
- the external computer may specifically be a desktop computer, a handheld computer or even a smart phone.
- the invention utilizes the piezoelectric material to sense the slight vibration of the ball table, and the advantages include the small thickness of the sensing component, the high sensitivity, the installation does not interfere with the table, and does not hinder the competition.
- the electronic components used include the judgment module, the processing module, etc., and the power consumption is very low.
- the hardware and software are designed to supply power to the components with higher power consumption only when necessary, and, without any inductive input for a period of time. After (such as 10 minutes), the system automatically goes to sleep, so even if you only use ordinary batteries, you can operate for hundreds of hours.
- the judgment result display can be provided in real time, and the utility model is flexible, and can not only assist the referee to judge, but also fully automatic operation when necessary, and automatically prepare the sensor to serve.
- the expansion performance of the system is strong, and the output of the judgment score can be externally connected to the display (not in the scope of the present invention), and the game score and the number of the game are displayed on the large screen, and the sensing data of each piezoelectric sensor can also be changed by changing the controller design (eg The difference between the sensing time and the length of the sensing time is externally transmitted to other controllers or computers (not in the scope of the present invention), and the exact position of the ball's landing point is calculated to create various viewer visual effects and statistical game technical data for analysis. Improve the scientific training level of table tennis.
- the method of detecting the landing point on the left or right half of the table is based on the vibration detected by the sensor of the left or right half of the table.
- the method is simple, fast and effective, and is suitable for a fast ball game.
- the touch panel sensor of the present invention it is possible to distinguish the situation of the starting ball touch net, and only display the situation that the referee should pay attention to, which greatly improves the practicability.
- the present invention can judge which scores are scored according to various competition conditions, and revolutionizes the game situation of the full-time hand referee.
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Abstract
一种乒乓球触台感应器包括至少二个安装在乒乓球台(1)的侧边缘的压电传感器(3)和判断模块(10)。乒乓球台(1)的球网(2)的两侧均具有至少一个压电传感器(3);压电传感器(3),用于获取乒乓球台(1)因受到乒乓球的碰撞而产生的震动信号;判断模块(10),用于比较至少二个压电传感器(3)所分别获取到的震动信号的强度或产生时间,并根据比较结果判断乒乓球于乒乓球台(1)的落点位置。还包括了具有此感应器的乒乓球比赛裁判系统。
Description
本发明涉及乒乓球比赛用的裁判辅助设备。
乒乓球比赛目前仍是依靠裁判员以人本身的观察和经验判断得分一方,基本上没有科学技术及仪器现场实时提供客观事实数据协助判断。要提供科学技术支持裁判,首先要能够感应乒乓球接触球台以及球网的情况。乒乓球接触球网的技术己在一中国实用新型专利(ZL 2013 2 0040691.9)中详述,本发明是有关感应乒乓球接触球台的技术以及利用该两种技术研制出一个可侦测发球触网情况及判断比赛得分一方的电子裁判系统。
乒乓球接触球台的情况可分为碰撞球台水平面和触碰球台边缘(即擦边),虽然前者易察觉及占大多数,但后者亦十分常见,且一但发生就很难察觉及经常引起球员和裁判员的不同意见,原因是球触碰球台边缘所引致球的飞行轨迹的变化很多时都十分小,所产生的声音亦十分微弱,不但眼睛和耳朵难以清楚察觉,不同人更会有不同的判断,因而引致争议。世界上至今仍未有技术及产品可解决这问题,而只是依据裁判员的个人主观判断作准。
理论上,要观察球的飞行轨迹有否因触碰球台反弹而改变,可利用高速摄影机拍摄球的飞行轨迹,然后再慢速回放以人眼判断飞行轨
迹有否改变。但实行上却很困难,因为审视重播需时,无可避免会延误球赛的进行,再加上高昂的系统费用,所以这方法并不实用,现时都是以人眼观察作准。网球比赛方面有人应用了这方法,使用多个高速摄影机同时拍摄网球的飞行轨迹,再用电脑图像处理软件分析找出球的落地点,从以判断球有否出界,但由于整个系统复杂昂贵,需专人安装及操作,作判断亦甚需时,所以只能在重要的国际网球比赛中使用,比赛时亦限制球员提出用电脑复核的要求次数,缺点甚多。
至于感应乒乓球触碰球台声音的方法,迄今为止仍是用人耳,但裁判员和击球一方都距离球台触碰点较远,难以肯定球有否触碰球台。理想的乒乓球触台传感器应该简单易用、灵敏准确、低功耗、不干扰比赛器材和球员以及可作快速实时判断。
发明内容
本发明的目的之一在于提出一种乒乓球触台感应器,其能解决侦测球有否触碰球台及无法判断乒乓球落点位置的问题。
本发明的目的之二在于提出一种乒乓球比赛裁判系统,其能解决无法判断乒乓球发球触网及自动判断得分一方的问题。
本发明的目的之三在于提出一种乒乓球比赛裁判系统,其能解决无法判断乒乓球落点的问题。
为了达到上述目的之一,本发明所采用的技术方案如下:
乒乓球触台感应器,其包括至少二个安装在一乒乓球台的侧边缘或底部或内部的压电传感器和一判断模块,所述乒乓球台的球网的两
侧均具有至少一个所述压电传感器;每一个压电传感器具有一标识;
所述压电传感器,用于获取乒乓球台因受到乒乓球的碰撞而产生的震动信号;
所述判断模块,用于比较所述至少二个压电传感器所分别获取到的震动信号的强度或产生时间,并根据比较结果判断所述乒乓球于所述乒乓球台的落点位置。
优选的,该乒乓球触台感应器还包括与所述压电传感器数量相等的滤波放大器,每一个压电传感器通过对应的一个滤波放大器与所述判断模块连接;所述滤波放大器,用于将符合乒乓球台震动频率的震动信号进行信号放大处理。
优选的,所述压电传感器的数量为偶数,且偶数个压电传感器以所述球网为对称轴,对称分布在所述球网的两侧。
优选的,所述压电传感器的数量为奇数。
为了达到上述目的之二,本发明所采用的技术方案如下:
乒乓球比赛裁判系统,其包括一如上所述的乒乓球触台感应器、至少一触网传感器、一电源模块、一结果输出模块和一处理模块;
所述触网传感器,用于获取球网因受到乒乓球的碰撞而产生的移位信号;
所述处理模块,用于根据所述落点位置和所述移位信号,驱动结果输出模块进行重发、乒乓球台的左方得分和乒乓球台的右方得分中的其中一种状态提示;
所述电源模块,用于为该乒乓球裁判系统提供工作电压。
优选的,所述触网传感器的数量为二个或以上,触网传感器沿所述球网的长度方向均匀分布。
优选的,所述结果输出模块为显示模块或语音模块。
优选的,所述处理模块还连接一用于选择半自动模式和全自动模式的模式开关。一用于提示球员准备发球的预备状态开关。
优选的,所述处理模块还连接一用于驱动结果输出模块输出提示球员准备发球指示的预备状态开关。
为了达到上述目的之三,本发明所采用的技术方案如下:
乒乓球比赛裁判系统,其包括一如上所述的乒乓球触台感应器、一电源模块、一结果输出模块、一处理模块和一落点跟随开关;
所述处理模块,用于在落点跟随开关启动时,根据所述落点位置,驱动结果输出模块对落点位置进行持续提示;
所述电源模块,用于为该乒乓球裁判系统提供工作电压。
本发明具有如下有益效果:
利用压电传感器感应球台轻微的震动,体积细小,灵敏度高,不干扰球台,不妨碍比赛。
图1为本发明实施例一的乒乓球比赛裁判系统的结构示意图(包含乒乓球触台感应器);
图2为本发明实施例一的乒乓球比赛裁判系统的电路方框示意图;
图3为本发明实施例二的乒乓球比赛裁判系统的结构示意图;
图4为本发明实施例三的乒乓球比赛裁判系统的结构示意图;
图5为本发明实施例四的乒乓球比赛裁判系统的结构示意图;
图6为本发明实施例五的乒乓球比赛裁判系统的结构示意图。
附图标记:1、乒乓球台;2、球网;3、压电传感器;4、处理模块;5、预备状态开关;6、结果输出模块;7、触网传感器;8、滤波放大器;9、模式开关;10、判断模块;11、电源模块;12、落点跟随开关。
下面,结合附图以及具体实施方式,对本发明做进一步描述。
实施例一
结合图1和图2所示,一种乒乓球比赛裁判系统,其包括乒乓球触台感应器、触网传感器7、电源模块11、结果输出模块6、处理模块4、模式开关9和预备状态开关5。
所述乒乓球触台感应器包括八个安装在乒乓球台1的侧边缘压电传感器3、八个滤波放大器8和判断模块10。所述乒乓球台1的球网2的两侧均具有一个所述压电传感器3。压电传感器3的具体位置可以是靠近乒乓球台1的边缘并紧贴乒乓球台1的底面。每一个压电传感器3具有一标识,为判断模块10计算落点位置提供计算基础,若所述落点位置为粗略位置(左半台或右半台),则所述标识可为左和右,即左半边台的压电传感器3的标识都可以是左,右半边台的压
电传感器3的标识都可以是右,若所述落点位置需要精确位置,则所述标识可为唯一标识,例如,乒乓球台1左边的四个压电传感器3的编号分别为001、002、003、004,右边的四个压电传感器3的编号分别为005、006、007、008。每一个压电传感器3通过对应的一个滤波放大器8与所述判断模块10连接。八个压电传感器3以所述球网2为对称轴,对称分布在所述球网2的两侧。压电传感器3的固定方式可以是结合胶、胶布、螺钉等,并且,为了防止外来声音干扰,还可以用隔音材料对压电传感器3进行紧密覆盖。
所述压电传感器3,用于获取乒乓球台1因受到乒乓球的碰撞而产生的震动信号。
所述滤波放大器8,用于将符合乒乓球台1震动频率的震动信号进行信号放大处理,其它不符合乒乓球台1震动频率的电子噪声将被过滤,以排除干扰。
所述判断模块10,用于比较所述八个压电传感器3所分别获取到的震动信号的强度(也可以比较产生时间,详细原理说明请见下文描述),并根据比较结果判断所述乒乓球于所述乒乓球台1的落点位置。
所述触网传感器7,用于获取球网2因受到乒乓球的碰撞而产生的移位信号。所述触网传感器7的数量可以是一个,也可以是多个,若为多个,则可以沿所述球网2的长度方向均匀分布。触网传感器7为现有技术,在此不再赘述,其结构、安装及原理可见申请号为201320040691.9的中国实用新型专利所公开的“球类比赛擦网球感
应器”,本实施例的触网传感器7还可以是其他结构和型号的感应器,只要其能感应到球网2因震动而产生移位即可。
所述处理模块4,用于根据所述落点位置和所述移位信号,驱动结果输出模块6进行重发、乒乓球台的左方得分和乒乓球台的右方得分中的其中一种状态提示。所述结果输出模块6可以是显示模块或语音模块。若为显示模块,则可由四颗LED构成,其中两颗LED用于得分状态提示,一颗LED用于重发状态提示。若为语音模块,则可为由扬声器,由语音提示重发、乒乓球台的左方得分和乒乓球台的右方得分提示。
所述电源模块11,用于为该乒乓球裁判系统提供工作电压。
所述预备状态开关5,可由裁判员拿取,用于驱动结果输出模块6输出提示球员准备发球的指示,例如,显示模块的另一颗LED点亮(由处理模块4驱动),用于提醒球员准备。
所述模式开关9,用于选择半自动模式和全自动模式,当选择半自动模式时,用于提醒球员准备的LED不会自动点亮,由预备状态开关5控制点亮;当选择全自动模式时,当判断重发或得分后,根据预设时间(如6秒)进入预备发球状态,点亮对应的LED。
滤波放大器8、判断模块10、处理模块4、模式开关9和电源模块11可构成一控制盒,所述控制盒安装在乒乓球台1底部。结果输出模块6可以安装在球网2侧边,也可以与控制盒做成一体。预备状态开关5可做成一遥控器结构,也可以与控制盒做成一体。
本实施例的工作原理如下:
当乒乓球碰撞乒乓球台1时,无论是碰撞乒乓球台1的水平面或边缘,都会因碰撞而使乒乓球台1震动,我们听到的碰撞声其实就是由这震动引起,再经过空气传到耳朵,但空气还传播了很多其他声音,阻碍耳朵听到微弱的擦边声,所以感应乒乓球碰撞乒乓球台1的最根本办法就是直接感应乒乓球台1的震动。压电材料(Piezoelectric material)的特性是当受到压力时,两端就会产生电场和电压,由于震动就是循环变化的压力,所以可以使压电材料产生循环变化的电压,亦即是交流电压。本实施例使用压电材料制成的传感器(即压电传感器3)紧贴着乒乓球台1,因而可以灵敏地感应到乒乓球碰撞乒乓球台1水平面及擦边所引致乒乓球台1的轻微震动,并将其直接转化为交流电压。
本实施例的其中一个特点是根据各个不同压电传感器3感应到乒乓球台1震动的时间先后,判断乒乓球碰撞乒乓球台1(以球网2为界线)的左或右半边,原理是乒乓球台1的震动源自乒乓球落台点,而左右两半边球台的压电传感器3的安装位置相对于球网2是对称的,所以距离落台点最近的一个压电传感器3必定是在落台点所在的半边台,而这个压电传感器3亦是最早感应到震动的一个。所以如果判断模块10测到编号为001至004的压电传感器3的其中一个首先感应到震动,就可确定球触碰其所在的半边台(即乒乓球大概的落点位置),反之如果测到编号为005至008的压电传感器3的其中一个首先感应到震动,就可确定球触碰另半边台。
除此之外,判断模块10还可以更精确的计算到落点位置的准确
位置,原理是震动到达压电传感器3的时间和落台点与压电传感器3之间的距离成正比例,落台点一方的四个压电传感器3将先后感应到震动,所以根据各个压电传感器3感应到震动的先后和时间差别,就可利用数学方程式计算出落台点与各个压电传感器3之间不同距离的差别和乒乓球的准确落点位置。同理,由于乒乓球落台点为震源位置,震源位置会引起远近不同的压电传感器3感应到不同的震动强度,即电压强度亦不一样,因此,也可以由震动或电压信号的强度计算落点位置。
触网传感器7将乒乓球触碰球网2的移位信号传到处理模块4。处理模块4根据乒乓球有否触网以及落点位置在左或右半边球台的事实,便可以根据球例作出罗辑判断。
例一:在准备感应发球状态下,先感应到球在左方落台,然后触网,再在右方落台,便可判断为发球触网须重发。
例二:在准备感应发球状态下,先感应到球在左方落台,然后触网,再在左方落台,便可判断为发球落网,右方得分。
例三:在准备感应发球状态下,先感应到球在左方落台,然后在右方落台,再在右方落台,便可判断为接发球失误,左方得分。
在感应到球落台后,如经过一段时间,如五秒,仍未再感应到球触碰球台,则判断为回球失误。
实施例二
本实施例与实施例一的区别在于压电传感器3和滤波放大器8的数量不一样,本实施例的压电传感器3和滤波放大器8的数量均为二
个。判断模块10判断的落点位置则为粗略的,判断结果为左方和右方。
实施例三
本实施例与实施例二的区别在于二个压电传感器3的位置是不对称的,判断模块10的算法要根据二个压电传感器3的位置重新设定。
实施例四
本实施例与实施例一的区别在于压电传感器3和滤波放大器8的数量不一样,本实施例的压电传感器3和滤波放大器8的数量均为三个。三个压电传感器3做不到对称设置,因此,判断模块10的算法要根据三个压电传感器3的位置重新设定。
此外,上述各实施例的压电传感器3还可以安装在乒乓球台1的底部或内部,以达到不干扰乒乓球运行线路的目的。压电传感器3、滤波放大器8、判断模块10、处理模块4、触网传感器7、结果输出模块6和预备状态开关5之间可以是导线连接或无线连接。判断模块10还可与处理模块4集成为一体。
实施例五
如图6所示,一种乒乓球比赛裁判系统,其包括一与实施例一相同的乒乓球触台感应器、一电源模块11、一结果输出模块6、一处理模块4和一落点跟随开关12。
所述处理模块4,用于在落点跟随开关12启动时,根据所述落点位置,驱动结果输出模块6对落点位置进行持续提示。
所述电源模块11,用于为该乒乓球裁判系统提供工作电压。
所述结果输出模块6可包括两颗LED,均面向裁判员,并且分居左右两边,与左半边台和右半边台对应。所述落点跟随开关12可为内置于处理模块4的软件程序,由厂商预设其启闭状态,或者所述落点跟随开关12为外置式开关按键。
使用时,乒乓球触台感应器感应到震动并判断乒乓球的落点位置,是左半边台还是右半边台,然后处理模块4根据落点位置驱动对应的LED跟随落点位置点亮,例如,乒乓球每与左半边台接触一次,左边的LED就点亮一次,乒乓球每与右半边台接触一次,右边的LED就点亮一次,两颗LED就持续不断地跟随落点位置闪亮,作用是提供裁判员在怀疑乒乓球有否擦边时参考之用,本实施例的系统并不会根据球例判断出得分一方。
此外,上述各实施例的结果输出模块,还可以是外置电脑,裁判员可通过外置电脑看到落点位置结果判断。所述外置电脑具体可以是台式电脑、手持电脑甚至是智能手机等。
本发明利用压电材料感应球台轻微的震动,优点包括感应组件厚度少,灵敏度高,安装不干扰球台,不妨碍比赛。所使用的电子组件包括判断模块、处理模块等,功耗十分低,硬件及软件的设计更做到只在必要时才短暂供电给功耗较高的组件,而且,在没有任何感应输入一段时间后(如10分钟),系统自动进入睡眠状态,因此就算只用普通电池亦可运作数百小时。
全系统安装后不需要调校,简单易用,不需专人操作,不昂贵,
可实时提供判断结果显示,用途灵活,既可辅助裁判员判断,亦可在有需要时全自动运作,自动预备感应发球。系统的扩展性能强,判断得分的输出可外接计分显示器(不在本发明范围),显示比赛得分及局数于大屏幕,亦可通过改变控制器设计,将各个压电传感器的感应数据(如感应时间的先后差别长短)外输到其他的控制器或电脑(不在本发明范围),计算球的落台点的准确位置,用以创造各种观众视觉效果及统计比赛技术数据作分析,大大提升乒乓球的科学训练水平。
侦测落台点在左或右半边台的方法是根据震动首先由左或右半边球台的传感器侦测到,方法简单快速有效,适合快速进行的球赛。
如只单独使用已有的触网传感器的话,只可以做到凡触网都发出显示,使得经常发生但并不影响裁判的非发球触网情况都亮灯显示出来,干扰了裁判员的注意力。但配合本发明的触台传感器后,可以分辨出发球触网的情况,只显示裁判员须注意的情况,大大提高实用性。再加上设置了回球时限,本发明可按各种比赛情况判断何方得分,革命性的改变了全用人手裁判员的比赛情况。利用科学技术侦测客观事实数据如触网擦边,大大减低了主观因素如裁判员个人经验、视力及听力等对比赛裁判质量的影响,在减轻裁判员压力之余,亦提高了比赛的科学形象及比赛的可观性。
对于本领域的技术人员来说,可根据以上描述的技术方案以及构思,做出其它各种相应的改变以及变形,而所有的这些改变以及变形都应该属于本发明权利要求的保护范围之内。
Claims (10)
- 乒乓球触台感应器,其特征在于,包括至少二个安装在一乒乓球台的侧边缘或底部或内部的压电传感器和一判断模块,所述乒乓球台的球网的两侧均具有至少一个所述压电传感器;每一个压电传感器具有一标识;所述压电传感器,用于获取乒乓球台因受到乒乓球的碰撞而产生的震动信号;所述判断模块,用于比较所述至少二个压电传感器所分别获取到的震动信号的强度或产生时间,并根据比较结果判断所述乒乓球于所述乒乓球台的落点位置。
- 如权利要求1所述的乒乓球触台感应器,其特征在于,还包括与所述压电传感器数量相等的滤波放大器,每一个压电传感器通过对应的一个滤波放大器与所述判断模块连接;所述滤波放大器,用于将符合乒乓球台震动频率的震动信号进行信号放大处理。
- 如权利要求1所述的乒乓球触台感应器,其特征在于,所述压电传感器的数量为偶数,且偶数个压电传感器以所述球网为对称轴,对称分布在所述球网的两侧。
- 如权利要求1所述的乒乓球触台感应器,其特征在于,所述压电传感器的数量为奇数。
- 乒乓球比赛裁判系统,其特征在于,包括一如权利要求1-4任一项所述的乒乓球触台感应器、至少一触网传感器、一电源模块、一结果输出模块和一处理模块;所述触网传感器,用于获取球网因受到乒乓球的碰撞而产生 的移位信号;所述处理模块,用于根据所述落点位置和所述移位信号,驱动结果输出模块进行重发、乒乓球台的左方得分和乒乓球台的右方得分中的其中一种状态提示;所述电源模块,用于为该乒乓球裁判系统提供工作电压。
- 如权利要求5所述的乒乓球比赛裁判系统,其特征在于,所述触网传感器的数量为二个或以上,触网传感器沿所述球网的长度方向均匀分布。
- 如权利要求5所述的乒乓球比赛裁判系统,其特征在于,所述结果输出模块为显示模块或语音模块。
- 如权利要求5所述的乒乓球比赛裁判系统,其特征在于,所述处理模块还连接一用于选择半自动模式和全自动模式的模式开关。
- 如权利要求5所述的乒乓球比赛裁判系统,其特征在于,所述处理模块还连接一用于驱动结果输出模块输出提示球员准备发球的预备状态开关。
- 乒乓球比赛裁判系统,其特征在于,包括一如权利要求1-4任一项所述的乒乓球触台感应器、一电源模块、一结果输出模块、一处理模块和一落点跟随开关;所述处理模块,用于在落点跟随开关启动时,根据所述落点位置,驱动结果输出模块对落点位置进行持续提示;所述电源模块,用于为该乒乓球裁判系统提供工作电压。
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CN114307116A (zh) * | 2021-12-24 | 2022-04-12 | 杭州电子科技大学 | 基于系统评分的智能数字化乒乓球训练系统及其工作方法 |
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KR101579755B1 (ko) * | 2014-11-20 | 2015-12-24 | 주식회사 여우전자 | 다중 충격감지센서를 포함하는 탁구경기 진행시스템 및 이를 이용한 탁구 경기 점수표시방법 |
CN105327493B (zh) * | 2015-11-30 | 2017-08-25 | 上海斐讯数据通信技术有限公司 | 乒乓球训练系统及方法 |
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CN111821645B (zh) * | 2020-06-14 | 2021-07-30 | 上海百禄动漫科技有限公司 | 蹦床安全防护平台及方法 |
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