CN106621241A - Table tennis ball pressure and placement analysis system - Google Patents
Table tennis ball pressure and placement analysis system Download PDFInfo
- Publication number
- CN106621241A CN106621241A CN201610907705.0A CN201610907705A CN106621241A CN 106621241 A CN106621241 A CN 106621241A CN 201610907705 A CN201610907705 A CN 201610907705A CN 106621241 A CN106621241 A CN 106621241A
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- CN
- China
- Prior art keywords
- table tennis
- pressure
- piezoelectric membrane
- signal
- batting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B59/00—Bats, rackets, or the like, not covered by groups A63B49/00 - A63B57/00
- A63B59/40—Rackets or the like with flat striking surfaces for hitting a ball in the air, e.g. for table tennis
- A63B59/42—Rackets or the like with flat striking surfaces for hitting a ball in the air, e.g. for table tennis with solid surfaces
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
- A63B60/46—Measurement devices associated with golf clubs, bats, rackets or the like for measuring physical parameters relating to sporting activity, e.g. baseball bats with impact indicators or bracelets for measuring the golf swing
-
- 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
- A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
-
- 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
-
- 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
- A63B2220/56—Pressure
-
- 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
- A63B2220/80—Special sensors, transducers or devices therefor
- A63B2220/83—Special sensors, transducers or devices therefor characterised by the position of the sensor
- A63B2220/833—Sensors arranged on the exercise apparatus or sports implement
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
- A63B2225/50—Wireless data transmission, e.g. by radio transmitters or telemetry
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to a table tennis ball pressure and placement analysis system. The left and right parts of a table tennis racket are each provided with a rubber layer, a sponge layer and a base plate layer in sequence from outside to inside, a piezoelectric film is arranged between each rubber layer and the corresponding sponge layer in an array mode, each piezoelectric film is closely attached to the portion between each rubber layer and the corresponding sponge layer of the table tennis racket, the base plate is internally provided with an amplifying circuit, an A/D conversion module and a Bluetooth module, the piezoelectric films convert mechanical energy into an electric energy signal, the signal passes through the amplifying circuit, an analog signal is converted into a digital signal through the A/D conversion module, and the digital signal is sent and transmitted to a terminal through the Bluetooth module to conduct batting pressure and displacement analysis. A table tennis batting database is built by adopting a fractal theory. Fractal feature solving is conducted on collected batting, and a table tennis batting information database is built by means of a large amount of collected information. According to different purposes, the batting information collected again and data inside the database are compared, and different purposes are achieved through analysis and evaluation.
Description
Technical field
The present invention relates to a kind of Sports Development ancillary technique, more particularly to a kind of table tennis ball kicking pressure and drop point point
Analysis system.
Background technology
China is that table tennis big country even more makes the country prosperous.For a long time, compatriots have deep and special feelings to table tennis
Sense.Table tennis embodies in the world the spirit image of China.In twentieth century the seventies and eighties, table tennis is used as China
Peaceful and friendly symbol, is to promote the diplomatic cause of understanding and republic with countries in the world to play important function, becomes China
The tie of communication between world's different background, Different Culture, heterogeneous beliefs country.Exactly because a variety of historical backgrounds and right
The emotion of table tennis facilitates China becomes table tennis first power, not only with powerful professional troop, is also formed
Extensive mass foundation.
Shot of swinging the bat determines table tennis state of flight, is also the technical movements of athletic most critical, is sports
The embodiment of level.With speed is fast, rotating speed is high, track is changeable in table tennis flight course, general image documentation equipment is difficult to catch, no
It is easy to measurement.In reality, table tennis unordered chaotic change in time domain to racket pressure size and distribution in impact
Change, it is difficult to find out rule.Which results in the analysis motion state only from time domain unrealistic.Therefore, at present to the technology of table tennis
Judge often can only be based on qualitative description, such as：Ball revolves very much, and lifting the ball is excessive, bat too soft etc..It is right that shortage quantitative description is caused
Sportsman's level and performance analysis be not deep enough accurately.Although occurring using various kinds of sensors to each during table tennis
Product or patent that item parameter is measured, but still lack effective analysis method, the help such as training and event watching is had
Limit.
The content of the invention
The present invention be directed to table tennis unordered chaotic change in time domain to racket pressure size and distribution during ball
Change, it is difficult to find out the problem of rule, it is proposed that a kind of table tennis ball kicking pressure and drop point analysis system, measurement table tennis is waved
Table tennis pressure size and distribution on racket when flicking, and realized to sportsman's technology and performance using fractal principle
Divide shape, so as to realize improving training method, formulate tactics strategy and aid in the purposes such as event watching.
The technical scheme is that：A kind of table tennis ball kicking pressure and drop point analysis system, racket or so are from outside to inside
There are rubber layer, spongy layer and backplane level successively, have the piezoelectric membrane of array arrangement in rubber layer and sponge interlayer, piezoelectric membrane is tight
It is closely connected attached that amplifying circuit, A/D modular converters and bluetooth module are placed in backplane level and racket rubber layer and spongy layer between, press
Mechanical energy is converted into electric power signal by conductive film, and signal is through amplifying circuit, then analog signal is changed into several by Jing A/D modular converters
Word signal, data signal sends to transmit to terminal through bluetooth module carries out stroke pressure and drop point analysis.
The piezoelectric membrane is from the piezoelectric membrane that polyvinylidene is material.
The table tennis ball kicking pressure and drop point analysis system, table tennis acts on several piezoelectric membranes of array arrangement,
Simultaneously several pressure signals are received, different pressures size is compared, the piezoelectric membrane of the maximum that is stressed is nearest away from center ball strike；
Such as when there are some piezoelectric membrane consistent pressures or approximate, then make least radius circle and can envelope it is all these approximate
The piezoelectric membrane of pressure, determined by geometric center be defined as center ball strike.
The terminal communicates with bluetooth module, and signal is visualized output display by terminal, carries out data and is analyzed, and is used for
Training and competition broadcast.
The beneficial effects of the present invention is：Table tennis ball kicking pressure of the present invention and drop point analysis system, set up using a point shape
Theoretical table tennis ball kicking database.Solution fractal characteristic is carried out in the batting to collecting, and using more than a large amount of collections letters
Breath sets up table tennis ball kicking information database.Afterwards according to different purposes, by the impact information for arriving for gathering again and database
Interior data are contrasted, and are analyzed assessment and are realized different purposes.Achievable purpose includes：Competitiveness assessment, Analysis of Errors,
Play characteristic analysis, pre-games assessment, training method is formulated, sports equipment is improved, sportsman's health care and rehabilitation and event watching etc..
Description of the drawings
Fig. 1 is piezoelectric membrane of the present invention array arrangement schematic diagram on racket；
Fig. 2 is each layer internal circuit of racket of the present invention and piezoelectric membrane arrangement schematic diagram；
Fig. 3 is table tennis ball kicking pressure change schematic diagram of the present invention；
Fig. 4 is table tennis drop point distribution schematic diagram of the present invention；
Fig. 5 carries out schematic diagram using fractal characteristic for the present invention to table tennis analysis system embodiment.
Specific embodiment
As shown in Figure 1 piezoelectric membrane array on racket arranges schematic diagram, the array arrangement piezoelectricity in racket effective hitting area
Film, the unordered confusion signal of the pressure size and distribution change of table tennis ball kicking, Neng Goutong are collected by piezoelectric membrane
When measurement pressure size and distribution, one piece of piezoelectric membrane is responsible for its near zone pressure condition, and adjacent sensor is responsible for region
It is connected with each other, arranges that sufficient amount of sensor realizes the measurement work to whole face.Polyvinylidene（PVDF）For material
Piezoelectric membrane.Piezoelectric membrane is by the polyvinylidene with piezo-electric effect（PVDF）Material is made, and can turn press
Electric energy is turned to, has the advantages that dynamic property is good, bandwidth, certainty of measurement are high, measurement sensitivity is high, can very well meet this
Invention needs.Additionally, piezoelectric membrane thickness of thin, can reach micron level, itself there is splendid flexibility, can closely attach
It is minimum to racket performance impact with rubber stress and deformation between racket rubber layer and spongy layer, it is ensured that sportsman's technology
Give full play to
Piezoelectric membrane is soft because of its thickness of thin, material, under being attached directly to rubber layer.When racket square stance, table tennis acts on ball
Subregion is clapped, causes the several piezoelectric membranes in certain area all to detect pressure presence, while output signal.To different pressures
Power size is compared, and the piezoelectric membrane for finding out the maximum that is stressed is nearest away from center ball strike.When existing, some piezoelectric membrane pressure are big
It is little consistent or approximate, then make least radius circle and be capable of the piezoelectric membrane geometric center of all these approximate pressures of envelope, this
When can be approximately considered center of the circle and be located approximately at center ball strike.Every piezoelectric membrane picks out two leads, is connected to amplification electricity
Road.
Fig. 2 is each layer internal circuit of racket and piezoelectric membrane arrangement schematic diagram, internal structure section view is amplified, left and right rubber
Layer is 1 and 2, and left and right spongy layer is 3 and 4, and backplane level is 5.In the piezoelectric membrane 6 and 7 that rubber layer and sponge interlayer are, piezoelectricity is thin
Thin film thickness, can reach micron level, itself have splendid flexibility, can closely attach and racket rubber layer and spongy layer
Between, it is minimum to racket performance impact with rubber stress and deformation, it is ensured that sportsman's technology gives full play to.In backplane level 5
Place the circuits 8 such as amplifying circuit, A/D modular converters and bluetooth module.Piezoelectric membrane has piezo-electric effect, internal by external force effect
Polarization phenomena are produced, positive and negative charge occurs in upper and lower surface, this process nature is that mechanical energy is converted into electric energy.Because producing pole
Change effect extremely faint, therefore need through amplifying circuit, could be the identification of A/D modular converters.After conversion, produced by film
Analog signal be changed into data signal.Data signal sends through bluetooth module and further transmits to terminal.Using bluetooth mould
Block can avoid long pair of connecting wires player motion from impacting.It is lithium battery in racket handle, is that above circuit is powered.
Additionally, because base plate interior hollows out cloth circuits, racket overall weight and barycenter change are necessarily caused, thus it is empty in handle and base plate
Counterweight lead is set at gap, balancing weight is reduced by addition and is made it possible to meet sportsman's custom.
Realized using bluetooth module and terminal communication.Signal can be visualized output display by terminal, further can be entered
Row data are analyzed, for training and competition broadcast.Using universal PC platform as terminal, based on high-level language to being input into PC
After middle signal-obtaining, editor's visualization window interface, while DAP is added, to sportsman's competitive state amount of carrying out
Change, there is provided analysis foundation.
In theory, table tennis pressure size and distribution are unordered chaotic distribution in time domain.Analyze only from time domain,
Rule cannot be drawn, therefore sportsman's play feature and defect can not be found, therefore also cannot be given play improve provide according to
According to.And only the chaotic table tennis of time domain is respectively presented to audience to data, can not fully help spectators to understand match, contrast
Match event watching property improves limited.
In practice, sportsman's batting is affected by factors such as play, competitive state and opponent's play, implies certain rule.Such as
If can be further that training method and strategy of game are carried to fully reflection sportsman's state by above rule can be found out
For foundation.The present invention is proposed according to this thinking, using fractal principle, data of batting is analyzed under various dimensions, sets up table tennis
Pang ball batting database and on this basis, refers to fractal dimension as analysis yardstick, draws sportsman's technical merit and spy
Point.
Fig. 3 is table tennis ball kicking pressure change schematic diagram.
Fig. 4 is table tennis drop point distribution schematic diagram.Stain is batting drop point on racket every time in figure.Figure grey area
1 is conventional hitting area, and gray area 2 is lifting the ball hitting area, and gray area 3 is bullet Pull shot area.
Fig. 5 to table tennis analysis system implementation using fractal characteristic to being illustrated.First, the table tennis of Erecting and improving
Ball batting database.Afterwards based on database, needed to analyze sportsman's competitiveness information according to difference.
Using piezoelectric membrane racket set forth in the present invention, by the training forces at different levels such as national, provincial and every table tennis
Pang ball match thing is used, and the different sportsmen of collection, different play, Different climate environment, home-away situation and different competitive states are inferior
Batting data.The extensive mass foundation of China's table tennis and competitiveness advanced in the world can necessarily obtain abundance and hit
Ball data.Fractal characteristic is solved to obtaining batting data, and is added according to factors such as sportsman's play, competitiveness, space enrironments
To classify, set up using the table tennis ball kicking database of fractal theory.
When using database, according to different purposes by Data Comparison in freshly harvested batting data fractal characteristic and storehouse,
It is analyzed and assesses, realizes different purposes.
Following purpose can be reached by fractal analysis method.
（1）Competitiveness is assessed.By sportsman to be assessed batting data fractal characteristic competitiveness fortune different from database
Fractal characteristic is mobilized to be compared, it is determined that sportsman's competitiveness to be estimated；
（2）Analysis of Errors.The fractal characteristic that different factors cause to slip up is found out, with the lower batting data fractal characteristic of sportsman's error
It is analyzed, draws the error origin cause of formation；
（3）Play characteristic analysis.Class database is sorted out like play sportsman, fractal characteristic is found；
（4）Pre-games is assessed.According to compete at hand varying environment and human factor, comparison database data with existing, analyze with
Upper factor may be impacted to match, and correspondence tactics are formulated in help；
（5）Training method is formulated.Sportsman's play feature is drawn using fractal characteristic, specific aim formulates training opportunity；
（6）Sports equipment is improved.Contrast different motion equipment batting fractal characteristic, improves and assesses sports equipment；
（7）Sportsman's health care and rehabilitation.According to different motion person's batting fractal characteristic, analysis may easily occur motion portion of straining
Position, carries out in time sports health and rehabilitation；
（8）Event watching auxiliary.To pass through to have sportsman in match to bat data fractal characteristic play feature, performance level for drawing etc.
Information presents to audience, and helps spectators to be better understood by match and judges situation on the court.
Claims (4)
1. a kind of table tennis ball kicking pressure and drop point analysis system, racket or so have successively from outside to inside rubber layer, spongy layer and
Backplane level, it is characterised in that have the piezoelectric membrane of array arrangement in rubber layer and sponge interlayer, piezoelectric membrane is closely attached and ball
Clap between rubber layer and spongy layer, place amplifying circuit, A/D modular converters and bluetooth module in backplane level, piezoelectric membrane is by machine
Tool can be converted into electric power signal, and signal is through amplifying circuit, then analog signal is changed into data signal by Jing A/D modular converters, number
Word signal sends to transmit to terminal through bluetooth module carries out stroke pressure and drop point analysis.
2. table tennis ball kicking pressure and drop point analysis system according to claim 1, it is characterised in that the piezoelectric membrane choosing
With the piezoelectric membrane that polyvinylidene is material.
3. table tennis ball kicking pressure and drop point analysis system according to claim 1, it is characterised in that table tennis acts on battle array
Several piezoelectric membranes of row arrangement, while receiving several pressure signals, compare to different pressures size, the pressure of the maximum that is stressed
Conductive film is nearest away from center ball strike；Such as when there are some piezoelectric membrane consistent pressures or approximate, then least radius circle is made
And be capable of the piezoelectric membrane of all these approximate pressures of envelope, determined by geometric center be defined as center ball strike.
4. table tennis ball kicking pressure and drop point analysis system according to claims 1 to 3 any one, it is characterised in that institute
State terminal to communicate with bluetooth module, signal is visualized output display by terminal, carry out data and be analyzed, for training and race
Relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610907705.0A CN106621241A (en) | 2016-10-18 | 2016-10-18 | Table tennis ball pressure and placement analysis system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610907705.0A CN106621241A (en) | 2016-10-18 | 2016-10-18 | Table tennis ball pressure and placement analysis system |
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| Publication Number | Publication Date |
|---|---|
| CN106621241A true CN106621241A (en) | 2017-05-10 |
Family
ID=58856255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610907705.0A Pending CN106621241A (en) | 2016-10-18 | 2016-10-18 | Table tennis ball pressure and placement analysis system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106621241A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111939541A (en) * | 2020-06-23 | 2020-11-17 | 北京瑞盖科技股份有限公司 | Evaluation method, device, equipment and system for table tennis training |
| CN113750485A (en) * | 2021-09-23 | 2021-12-07 | 西安理工大学 | Table tennis bat with piezoelectric sensor array and preparation method thereof |
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| WO2004112919A1 (en) * | 2003-06-20 | 2004-12-29 | Julian Renton | Electronic circuit and plaything incorporated |
| CN2730434Y (en) * | 2004-10-19 | 2005-10-05 | 管永 | Novel table tennnis bat |
| CN203694544U (en) * | 2013-12-13 | 2014-07-09 | 张中举 | Intelligent table tennis bat |
| CN204121689U (en) * | 2014-08-15 | 2015-01-28 | 南京优触电子科技有限公司 | Mutual table tennis bat |
| CN204411630U (en) * | 2014-12-17 | 2015-06-24 | 江苏国星体育器材有限公司 | There is elastomeric table tennis bat |
| CN204910672U (en) * | 2015-09-11 | 2015-12-30 | 盐城市艾斯特体育器材有限公司 | Intelligence table tennis bat system |
| CN105327493A (en) * | 2015-11-30 | 2016-02-17 | 上海斐讯数据通信技术有限公司 | Table tennis training system and method |
| CN105879338A (en) * | 2016-06-29 | 2016-08-24 | 韩辉 | Table tennis bat for training |
-
2016
- 2016-10-18 CN CN201610907705.0A patent/CN106621241A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004112919A1 (en) * | 2003-06-20 | 2004-12-29 | Julian Renton | Electronic circuit and plaything incorporated |
| CN2730434Y (en) * | 2004-10-19 | 2005-10-05 | 管永 | Novel table tennnis bat |
| CN203694544U (en) * | 2013-12-13 | 2014-07-09 | 张中举 | Intelligent table tennis bat |
| CN204121689U (en) * | 2014-08-15 | 2015-01-28 | 南京优触电子科技有限公司 | Mutual table tennis bat |
| CN204411630U (en) * | 2014-12-17 | 2015-06-24 | 江苏国星体育器材有限公司 | There is elastomeric table tennis bat |
| CN204910672U (en) * | 2015-09-11 | 2015-12-30 | 盐城市艾斯特体育器材有限公司 | Intelligence table tennis bat system |
| CN105327493A (en) * | 2015-11-30 | 2016-02-17 | 上海斐讯数据通信技术有限公司 | Table tennis training system and method |
| CN105879338A (en) * | 2016-06-29 | 2016-08-24 | 韩辉 | Table tennis bat for training |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111939541A (en) * | 2020-06-23 | 2020-11-17 | 北京瑞盖科技股份有限公司 | Evaluation method, device, equipment and system for table tennis training |
| CN113750485A (en) * | 2021-09-23 | 2021-12-07 | 西安理工大学 | Table tennis bat with piezoelectric sensor array and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170510 |