CN101073704B

CN101073704B - Table-tennis table with edge-ball discriminating system

Info

Publication number: CN101073704B
Application number: CN2006100822957A
Authority: CN
Inventors: 赵健
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-18
Filing date: 2006-05-18
Publication date: 2011-04-13
Anticipated expiration: 2026-05-18
Also published as: CN101073704A

Abstract

The invention is concerned with the table for table tennis that is with the determinant system of edge ball, which the judge or the audience can determine the ball whether or not is a edge ball accurately. The characteristic is: sets the transducer or the system (-) under the table; the signal processing analyze system (-) determines whether or not transfer the caution image sound, display determinant result or sent out caution light by the sound image outputting equipment or the display lighting equipment (-) according to difference of the diagnostic information between the sound wave and the vibration wave of the edge ball and non-edge ball.

Description

Have edge ball and judge the table tennis table of detection system

1. technical field the present invention relates to a kind of table tennis table that detection system is judged in edge ball that has.The use of this table tennis table can make whether judge or easier the judging more accurately of spectators are edge balls.

2. background technology is present, known table tennis table is by billiard table, net, rack, compositions such as billiard table frame, according to the regulation of International Table Tennis Federation, the sportsman gets to ball on the opponent's court table top in the match, perhaps get to (being usually said edge ball) on the opponent's court mesa edge, be the fair ball that conforms with rule.The referee mainly depends on its vision and the sense of hearing to penalty in, but inaccurate sometimes to the penalty of some ball, and for example edge ball (comprising the side edge ball) causes the dispute between the sportsman often.Since edge ball moment flight path near straight line, coming penalty to be difficult to sometimes distinguish from vision is straight line or curve, the bump sound of edge ball simultaneously is less, if it is bigger to add the noise of competition area, judge whether to be close to from the sense of hearing and more be difficult to penalty, thereby might be judged to a fair ball out-of-bounds, cause erroneous judgement.International Table Tennis Federation has brought into use big ball at present, according to statistics, the use of big ball makes that the probability of edge ball obviously increases in the match, so Cai Pan erroneous judgement also correspondingly increases, thereby might be because the erroneous judgement of one or several edge ball changes hands a champion, this shows that the innovation of table tennis equipment is imperative.Up to the present, have edge ball and judge that the table tennis table of detection system does not also emerge.

3. summary of the invention the invention provides a kind of advanced person's table tennis table in order to overcome problem recited above, a kind of table tennis table that has edge ball judgement detection system.Table tennis table of the present invention is by billiard table, net, and rack, the billiard table frame, compositions such as detection system are judged in edge ball.Billiard table length and width height, the conformance to standard of feature such as elasticity of net length and width height and table top or technical indicator and International Table Tennis Federation.Table tennis table following by sensor or its system (1), signal processing analysis is recognition system (2) relatively, audiovideo output equipment or show flash unit compositions such as (3).The present invention not only meets the rule of International Table Tennis Federation, and can greatly improve the accuracy of edge ball penalty.

4. the present invention will be further described below in conjunction with accompanying drawing (side view) for description of drawings.Earlier the numbering among the figure is carried out as directed: 1. sensor or its system, 2. signal processing analysis recognition system relatively, 3. audiovideo output equipment or show flash unit.Wherein the sensor in sensor or its system (1) adopts acoustic detector, or vibration detector, or the combination of acoustic vibration detector, comprise the one or more dimensions vibrating sensor, the one or more dimensions sonic sensor, bottom surface installation at table tennis table is one or more, and multidimensional sensor claims multidirectional or many components or multiaxis to sensor again.See figure, when table tennis bump billiard table, the sound wave (comprising infrasound, ultrasonic wave and microwave) of the various frequencies that sensor or its system (1) can will receive at once and vibration wave signal transfer to relatively recognition system (2) of signal processing analysis.Signal processing analysis relatively recognition system (2) will carry out the sequential record to acoustic signals and vibration signal respectively simultaneously, conditioning (filter etc.), analyze, relatively, detection identifies whether contain special information of having of edge ball and feature, and determine whether spread out of caution, be very beneficial for referee's fair penalty, guaranteed the fair and reasonable of match by sound figure output equipment or demonstration flash unit (3).

5. specific embodiment the present invention implements in the following way: under the bottom surface of the table tennis table that meets Table Tennis Union's regulation, sensor installation or its system (1), select acoustic detector or vibration detector for use, or the combined sensor of acoustic detector and vibration detector, sensor comprises the acceleration transducer of one or more dimensions (multidirectional), the speed displacement sensor, or sound wave ultrasonic sensor, bottom surface at table tennis table is installed one or more, comprise near the middle part or middle part that can be installed in bottom surface, wherein acoustic detector is that the sound wave that is used for surveying the various frequencies that table tennis and billiard table bump produce (contains infrasound, ultrasonic wave and microwave), comprise that detection is in air and the various frequency sound waves of billiard table internal communication, vibration detector is the vibration (comprising various frequencies) that is used for surveying table tennis table, signal processing analysis compares the bottom surface that recognition system (2) is installed in table tennis table, adopt single-chip microcomputer or PLC or DSP or PLD, CPLD or super simulation process, or use a computer and carry out data and handle, cost height only, can select the type of data processor according to user's needs, audiovideo output equipment or flash unit (3) are installed in that the judge spectators see clearly easily or the place heard gets final product, wherein signal processing analysis relatively recognition system (2) be to be used for respectively acoustic signals to the various frequencies of sensor output (comprising infrasound, ultrasonic wave and microwave) and vibration signal nurse one's health (filtration), analyze, identify the information that wherein whether contains the ripple of edge ball; When table tennis clashes into billiard table arbitrarily, sensor or its system (1) can (comprise infrasound with the sound wave that receives at once, ultrasonic wave and microwave) and vibration signal transfer to relatively recognition system (2) of signal processing analysis, signal processing analysis relatively recognition system (2) will (comprise infrasound to acoustic signals respectively, ultrasonic wave and microwave signal) and vibration signal carry out sequential record simultaneously, conditioning, filtering, analyze, relatively, different between the signal message feature that detection identifies edge ball and the non-edge ball, its difference mainly is that the sound wave of edge ball (contains infrasound, ultrasonic wave and microwave) and difference or difference or the contrast or the ratio of vibration wave frequency or frequency, the difference of phase place or phase place or difference or contrast or ratio, the difference of amplitude or amplitude or difference or contrast or ratio, the difference of displacement or displacement or difference or contrast or ratio, the difference of speed or speed or difference or contrast or ratio, the difference of acceleration or acceleration or difference or contrast or ratio, different between the distinctive information characteristics that the difference of waveform or waveform and pulsewidth or difference or contrast or ratio or time-domain and frequency-domain feature contrast these edge balls and the difference of non-edge ball signal or signal or difference or contrast or the ratio, whether thereby whether decision is spread out of caution sound or sent caution light or show by audiovideo output equipment or demonstration flash unit (3) is edge ball, and the billiard table which side is presented at is close to, table tennis normally clashes into table top interior or the side of bump billiard table or the lower limb position of side of billiard table, or racket, when hand is run into billiard table or adjacent billiard table and is close to, because passed through signal condition, its sound wave and vibration wave frequency or difference on the frequency or difference or contrast, phase place or phase difference or difference or contrast, amplitude or difference of vibration or difference or contrast ratio, velocity of displacement acceleration or its difference or difference or contrast or ratio, the information of waveform or waveform difference or difference or contrast and feature, with different between the difference of the peculiar signal message feature of edge ball or signal or difference or contrast or the ratio, so do not send caution, need to prove, " difference or difference or contrast or ratio " between the above-mentioned said sensor signal, not only comprise difference or difference or contrast or ratio between each sensor signal, also comprise difference or difference or contrast or the ratio of single multidimensional (multidirectional) sensor between the signal of different directions (or axial), have only when edge ball takes place, signal processing analysis relatively recognition system (2) has identified the acoustic characteristic information (characteristic information that contains the infrasound ultrasonic wave microwave of edge ball) of edge ball and the vibration performance information of edge ball simultaneously, audiovideo output equipment or demonstration flash unit (3) be the meeting instant alarm, promptly many (five) warning of reflecting, thus the wrong report that produces because of the various environmental disturbances factors in competition field or human factor avoided; In actual applications, situation according to user's specific requirement in the concrete match, adopt a mirror, two mirror, three mirror, four mirror, wherein a kind of during five mirror are reported to the police, if in real racetrack, do not adopt instant alarm in real time, detect the judgement edge ball and adopt hand to report to the police, if that is: both sides sportsman disputes on if occur to the penalty of edge ball in the match, match is with carrying out equally as usual at present, audiovideo output equipment or demonstration flash unit (3) do not show whether maybe need not show is edge ball, and when the dispute words that penalty occurs, the referee starts hand push button or remote control mode, thereby show " edge ball " or " non-edge ball " printed words (also may show " neither edge ball neither non-edge ball " printed words, this situation might appear in the judgement for side edge), if adopt the words of non-automatic instant alarm mode, signal processing analysis compares recognition system (2) after the referee starts manual button or remote control mode, begin to analyze identification, the table tennis table that different manufacturers is produced and the texture material and the structure of table tennis are different, the information characteristics of edge ball can be slightly different, but table tennis table for same model, the information characteristics of edge ball is basic identical, but has different with the information characteristics of non-edge ball.Through painstaking efforts for many years, made this sample that the table tennis table of detection system is judged in edge ball that has at present, result of use is fairly good, can use in match among the people or world match fully.

Claims

1. one kind has the table tennis table that detection system is judged in edge ball, it can be accurate, sensitive, judge apace and detect table tennis and whether table top is close to, it is characterized in that: sensor installation or sensing system under the bottom surface of the table tennis table that meets International Table Tennis Federation's regulation, sensor is selected vibration detector for use, acoustic detector, or the combined type trans of acoustic detector and vibration detector, sensor comprises the one or more dimensions vibrating sensor, one or more dimensions sound wave ultrasonic sensor, install one or more at the bottom surface of table tennis table as required, acoustic detector is the various frequency sound waves that are used for surveying table tennis and the generation of billiard table bump, comprise that detection is in air and the various frequency sound waves of billiard table internal communication, and vibration detector comprises the acceleration transducer of one or more dimensions, velocity sensor, displacement transducer, it is the vibration wave that is used for surveying table tennis table, signal processing analysis comparison recognition system is installed in the bottom surface of table tennis table, adopt single-chip microcomputer or PLC or DSP or DCS or PLD, CPLD or computer carry out data to be handled, audiovideo output equipment or show that flash unit is installed in that the judge spectators see clearly easily or the place heard gets final product, wherein signal processing analysis comparison recognition system is to be used for respectively the signal of acoustic detector and vibration detector being nursed one's health filtration, analyze, detect, judge the peculiar information that wherein whether contains edge ball that relatively identifies, be the peculiar signal characteristic and non-different between the signal of being close to of edge ball, mainly be frequency or difference on the frequency or its difference or its contrast or its ratio that the edge ball vibration involves sound wave, phase place or phase difference or its difference or its contrast or its ratio, amplitude or difference of vibration or its difference or its contrast or its ratio, speed or speed difference or its difference or its contrast or its ratio, acceleration or acceleration difference or its difference or its contrast or its ratio, displacement or displacement difference or its difference or its contrast or its ratio, different between these peculiar information characteristics of waveform or waveform and pulse width difference or its difference or its contrast or its ratio or time-domain and frequency-domain difference and the non-edge ball signal, thereby whether decision reports to the police output shows, and the billiard table which side is presented at is close to, when table tennis clashes into billiard table arbitrarily, comprise that table tennis strikes the side of billiard table or the situation of side lower limb, sensor or its system can transfer to relatively recognition system of signal processing analysis with acoustic signals and the vibration wave signal that receives at once, signal processing analysis comparison recognition system is nursed one's health filtering simultaneously with acoustic signals and vibration signal respectively, analyze, relatively, detect judgement and identify information and the feature that whether contains edge ball, thereby determine whether spread out of caution sound or send caution light and the demonstration result of determination by audiovideo output equipment or demonstration flash unit, table tennis normally clashes into table top interior or the side of bump billiard table or the lower limb right angle of side of billiard table, or racket or hand is run into billiard table or when adjacent billiard table is close to, because its transducing signal is through conditioning, sound wave and vibration wave frequency or difference on the frequency or its difference or its contrast or its ratio, phase place or phase difference or its difference or its contrast or its ratio, amplitude or difference of vibration or its difference or its contrast or its ratio, waveform or waveform and pulse width difference or its difference or its contrast or its ratio or time-domain and frequency-domain difference, speed or speed difference or its difference or its contrast or its ratio, acceleration or acceleration difference or its difference or tool contrast or its ratio, the vibration information characteristic signal of the information characteristics of displacement or displacement difference or its difference or its contrast or its ratio signal and edge ball or normal ball or signal characteristic difference or its difference or its contrast or its ratio are obviously different, so do not send caution, need to prove, " difference or its difference or its contrast or its ratio " between the above-mentioned said sensor signal, not only comprise difference or difference or contrast or ratio between each sensor signal, also comprise difference or difference or contrast or the ratio of single multidimensional multidirectional sensor between different directions or axial signal; When edge ball takes place, signal processing analysis comparison recognition system has identified the acoustic characteristic information of edge ball simultaneously, the infrasound that contains edge ball, the signal message feature of the characteristic information of ultrasonic wave and microwave and edge ball, audiovideo output equipment or demonstration flash unit are just understood instant alarm, promptly five mirror are reported to the police, thereby avoid wrong report because of competition field disturbing factor or artificial disturbance generation, in actual applications, according to the penalty rule in the match and the difference of customer requirements, adopt a mirror, two mirror, three mirror, four mirror, wherein a kind of during five mirror are reported to the police, if require not adopt instant alarm in real time according to real racetrack, detect the judgement edge ball and adopt hand to report to the police, if that is: both sides sportsman disputes on if occur to the penalty of edge ball in the match, equally as usual, carry out at present between match, audiovideo output equipment or demonstration flash unit do not show whether maybe need not show is edge ball, and when the dispute words that penalty occurs, the referee starts edge ball and manually judges button or remote control mode, thereby the printed words that show " edge ball " or " non-edge ball ", or show " neither edge ball neither non-edge ball " printed words, this situation might appear in the judgement for side edge, if adopt the words of non-automatic instant alarm mode, signal processing analysis comparison recognition system starts after manual judgement connects key or remote control mode the referee, begins to analyze identification; The table tennis table that different manufacturers is produced and the texture material and the structure of table tennis are different, the information characteristics of edge ball can be slightly different, but for the table tennis table of same model, the information characteristics of edge ball is basic identical, but has different with the information characteristics of non-edge ball.

2. table tennis table according to claim 1 is characterized in that billiard table, net, rack, billiard table frame, and material, elasticity, size characteristic all with the conformance to standard of International Table Tennis Federation.