CN107823871A - A kind of identifying system and method for losing points of receiving based on table tennis touching - Google Patents
A kind of identifying system and method for losing points of receiving based on table tennis touching Download PDFInfo
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- CN107823871A CN107823871A CN201711075907.4A CN201711075907A CN107823871A CN 107823871 A CN107823871 A CN 107823871A CN 201711075907 A CN201711075907 A CN 201711075907A CN 107823871 A CN107823871 A CN 107823871A
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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
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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
- A63B2220/10—Positions
- A63B2220/14—Geo-tagging, e.g. for correlating route or track location data with specific information related to that specific location
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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
- A63B2220/56—Pressure
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- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of identifying system and method for losing points of receiving based on table tennis touching.Its system include read historical data and determine whether legal ball module, obtain ball table pressure sensing data and judge receive whether lose points module, obtain net pressure sensing data and judge receive whether lose points module, obtain racket pressure sensing data and judge receive whether lose points module, judge whether table tennis lands module.Both sides come and go and received in table tennis is played a game, when certain side's racket is received, server hits the historical data before table tennis judges whether it is legal ball according to racket, identifies whether the trend of table tennis loses points so as to judge that the party receives according to the pressure sensing data for hitting table tennis desktop after table, pressure sensor is sent on racket face and net face.The present invention solves the problems, such as that the table tennis system based on Internet of Things simply and effectively can not identify to receive and lost points.
Description
Technical field
The invention belongs to smart table tennis Motion Technology field, more particularly to a kind of mistake of receiving based on table tennis touching
Divide identifying system and method.
Background technology
Need to carry out simple and effective judgement to receiving to lose points in the existing table tennis system based on Internet of Things, but mesh
It is preceding without can simply and effectively identify the technical scheme receiving and lose points.A kind of mistake of receiving based on table tennis touching is proposed for this
Divide identifying system and method.
The content of the invention
The technical problems to be solved by the invention are that the table tennis system based on Internet of Things can not simply and effectively be known
Do not receive the problem of losing points, propose a kind of identifying system and method for losing points of receiving based on table tennis touching.
Ball of the present invention refers to the table tennis for flying over to come from other side in playing a game；Legal ball of the present invention
Refer to the table tennis for meeting table tennis rule for flying over to come from other side in playing a game.
Applying pressure sensor of the present invention, pressure sensor after object pressure by deforming upon so as to produce pressure sensing
Data.As shown in figure 1, disposing pressure sensor respectively in table tennis desktop, racket face and net face obtains pressure sensing data,
Server is then forwarded to, server obtains the pressure sensing data of same sampling instant, judges whether table tennis hits table, by ball
Clap and hit or hit net.Both sides come and go and received in table tennis is played a game, and when certain side's racket is received, server hits table tennis according to racket
Historical data before pang ball judges whether it is legal ball, according to hit table tennis desktop after table, pressure on racket face and net face
Whether the trend for the pressure sensing data identification table tennis that sensor is sent loses points so as to judge that the party receives.
It is the summary that net is hit to table tennis that table tennis of the present invention, which hits net,；The table of the present invention that hits is to table tennis
The summary of pang ball impact ball table.Desktop of the present invention refers to table tennis desktop；Wire side of the present invention refers to table tennis
Wire side；Face of the present invention refers to table tennis.
Table tennis both sides' numbering of playing a game is that A and B, then ball table and racket numbering are the numbering of its corresponding side of playing a game.In ball
Pressure sensor is disposed in desktop, net face and racket face respectively, and pressure sensitive region is covered each by whole desktop, wire side and bat
Face.Sampling time interval T is set, and its value is less than the average time interval that middle table tennis hits twice of playing a game (according to historical data
Statistics obtains)；Positive integer N and M, M are set>N；The threshold X for judging table tennis ball impact is set.State that variable i represents table tennis quilt
Racket hits, when table tennis is hit by racket, then i=1, otherwise i=0；Statement variable j represents that table tennis hits table, works as table tennis
During ball impact ball table, then j=1, otherwise j=0；Statement variable m represents that table tennis hits net, when table tennis hits net, then m=
1, otherwise m=0.
The pressure sensor for being deployed in racket face, ball desktop and net face obtains pressure sensing according to sampling time interval T
Data, it is then forwarded to server；Server obtains the pressure sensing data of same sampling instant, according to racket, ball table and ball
The pressure sensing data of net calculate each sampling instant variable i, variable j and variable m value and record.
The present invention it is a kind of based on table tennis touching identifying system of losing points of receiving, including read historical data and judge be
No module, the pressure of acquisition net of whether losing points of being received for legal ball module, the pressure sensing data of acquisition ball table and judgement
Sensing data and judgement receive whether lose points module, obtain racket pressure sensing data and judge receive whether lose points module,
Judge whether table tennis lands module.
Read historical data and determine whether legal ball module：Remember variable x be hit table tennis racket numbering (with
A lower abbreviation numbering x side is one's own side, and numbering is not that an x side is other side)；Read before one's own side's racket hits the table tennis moment and connect
The value of continuous M sampling instant variable i, variable j and variable m, the value of variable i, variable j and variable m according to sampling instant from it is rear to
(the 1st behavior corresponds to the value of variable i to preceding 3 × M of order composition matrix H, and the 2nd behavior is to dependent variable j value, and the 3rd behavior is correspondingly
Variable m value), racket hits frequency n1The element number of variable i=1 as in matrix H, record the last racket in matrix
The row number m of shock1, note variable y1For the last racket numbering for hitting table tennis；Hit table frequency n2Variable j as in matrix H
=1 element number, record the last row number m for hitting table in matrix2, note variable y2The ball table numbering hit for the last time；
Hit net frequency n3Variable m=1 element number as in matrix H.Meet n when simultaneously1=1, n2=1, m2<m1、n3≤1、x≠
y1, x=y2When, then judge it is now legal ball, variable k=1, variable s=1 are set, while enter the pressure biography for obtaining ball table
Sense data and judge receive whether lose points module, obtain net pressure sensing data and judge receive whether lose points module, obtain
Take the pressure sensing data of racket and judge module of whether losing points of receiving；Otherwise judge it is not now legal ball.
Obtain the pressure sensing data of ball table and judge module of whether losing points of receiving：It is deployed in the pressure sensor of ball desktop
The pressure sensing data after one's own side's racket hits the table tennis moment are obtained according to sampling time interval T, are then forwarded to service
Device.Server obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then
Judge table tennis impact bead table, note variable p is the ball table numbering hit；If p=x, judge that table tennis hits one's own side's table again
Face, now one's own side, which receives, loses points；If p ≠ x, judge that table tennis rebounds other side's desktop, now one's own side receives and do not lost points.Otherwise sentence
Fixed no generation table tennis impact bead table.
Obtain the pressure sensing data of net and judge module of whether losing points of receiving：It is deployed in the pressure sensor in net face
The pressure sensing data after one's own side's racket hits the table tennis moment are obtained according to sampling time interval T, are then forwarded to service
Device.Server obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then
Judge that table tennis hits net, now judge whether s is less than 2.If s<2, then judge that now table tennis hits net once, makes s=s+1, together
When into obtain ball table pressure sensing data and judge receive whether lose points module, obtain net pressure sensing data and sentence
Disconnecting ball whether lose points module, obtain racket pressure sensing data and judge to receive module of whether losing points；If s >=2, judge
Table tennis repeatedly hits net, and now one's own side, which receives, loses points.Otherwise judge to hit net without generation table tennis.
Obtain the pressure sensing data of racket and judge module of whether losing points of receiving：It is deployed in the pressure sensor in racket face
The pressure sensing data after one's own side's racket hits the table tennis moment are obtained according to sampling time interval T, are then forwarded to service
Device.Server obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then
Judge that table tennis is hit by racket, note variable q is the racket numbering for hitting table tennis；Judge table tennis again by oneself if q=x
Square racket hits, and now one's own side, which receives, loses points；Judge that table tennis is tried to be the first shock by other side's racket if q ≠ x, now one's own side receives
Direct score.Otherwise judge that table tennis is not hit by racket.
Judge whether table tennis lands module：When table tennis does not have impact bead table and without shock net and not by racket
During shock, then judge whether k is less than N.If k<N, then k=k+1 is made, while return to the pressure sensing data for obtaining ball table and judgement
Receive whether lose points module, obtain net pressure sensing data and judge receive whether lose points module, obtain racket pressure
Sensing data and judgement are received module of whether losing points；Otherwise judge that table tennis directly lands, now one's own side, which receives, loses points.
It is a kind of based on table tennis touching receiving lose points identifying system system block diagram it is as shown in Figure 2.The logic of each module
Order as shown in Fig. 2 wherein obtain ball table pressure sensing data and judge receive whether lose points module, obtain net pressure
Sensing data and judgement receive whether lose points module, obtain receive module of whether losing points of pressure sensing data of racket and judging and be
Execution module simultaneously.
The a kind of of the present invention loses points recognition methods according to the following steps based on receiving for table tennis touching：
Step 1, the numbering and correlated variables that racket and ball table are set.
Table tennis both sides' numbering of playing a game is that A and B, then ball table and racket numbering are the numbering of its corresponding side of playing a game.In ball
Pressure sensor is disposed in desktop, net face and racket face respectively, and pressure sensitive region is covered each by whole desktop, wire side and bat
Face.Sampling time interval T is set, and its value is less than the average time interval that middle table tennis hits twice of playing a game (according to historical data
Statistics obtains)；Positive integer N and M, M are set>N；The threshold X for judging table tennis ball impact is set.State that variable i represents table tennis quilt
Racket hits, when table tennis is hit by racket, then i=1, otherwise i=0；Statement variable j represents that table tennis hits table, works as table tennis
During ball impact ball table, then j=1, otherwise j=0；Statement variable m represents that table tennis hits net, when table tennis hits net, then m=
1, otherwise m=0.
Step 2, record variable i, variable j and variable m value.
The pressure sensor for being deployed in racket face, ball desktop and net face obtains pressure sensing according to sampling time interval T
Data, it is then forwarded to server；Server obtains the pressure sensing data of same sampling instant, according to racket, ball table and ball
The pressure sensing data of net calculate each sampling instant variable i, variable j and variable m value and record；When variable i=1, then
Racket numbering is recorded, into step 3；Otherwise return to step 2.
Step 3, read historical data and determine whether legal ball.
Note variable x be hit table tennis racket numbering (hereinafter referred to as a numbering x side is one's own side, number be not the one of x
Side is other side)；The value that one's own side's racket hits continuous N sampling instant variable i, variable j and variable m before the table tennis moment is read,
(the 1st behavior is to strain for order composition 3 × M of the value of variable i, variable j and variable m according to sampling instant from back to front matrix H
I value is measured, the 2nd behavior is to dependent variable j value, value of the 3rd behavior to dependent variable m), racket hits frequency n1As in matrix H
The element number of variable i=1, record the row number m that the last racket hits in matrix1, note variable y1Table tennis is hit for the last time
The racket numbering of pang ball；Hit table frequency n2Variable j=1 element number as in matrix H, record matrix in the last time hit table
Row number m2, note variable y2The ball table numbering hit for the last time；Hit net frequency n3Variable m=1 element as in matrix H
Number.Meet n when simultaneously1=1, n2=1, m2<m1、n3≤1、x≠y1, x=y2When, then judge it is now legal ball, set
Variable k=1, variable s=1, into step 4；Otherwise judge it is not now good service, terminate.
Step 4 while obtain the pressure sensing data of ball table, net and racket and judge to receive and whether lose points.Hold simultaneously
Row step 4.1, step 4.2 and step 4.3.
Whether step 4.1, the pressure sensing data for obtaining ball table and judgement are received loses points.
Be deployed in the pressure sensor of ball desktop according to sampling time interval T obtain one's own side's racket hit the table tennis moment it
Pressure sensing data afterwards, are then forwarded to server.Server obtains the pressure sensing data of same sampling instant, when having and
When only a pressure sensing data are more than X, then table tennis impact bead table is judged, note variable p is the ball table numbering hit；If p
=x, then judge that table tennis hits one's own side's desktop again, now one's own side, which receives, loses points, and terminates；If p ≠ x, table tennis bullet is judged
Other side's desktop is returned, now one's own side receives and do not lost points, and terminates.Otherwise judge without generation table tennis impact bead table.
Whether step 4.2, the pressure sensing data for obtaining net and judgement are received loses points.
Be deployed in the pressure sensor in net face according to sampling time interval T obtain one's own side's racket hit the table tennis moment it
Pressure sensing data afterwards, are then forwarded to server.Server obtains the pressure sensing data of same sampling instant, when having and
When only a pressure sensing data are more than X, then table tennis hits net, now judges whether s is less than 2.If s<2, then judge now
Table tennis hits net once, makes s=s+1, return to step 4；If s >=2, judge that table tennis repeatedly hits net, now one's own side receives mistake
Point, terminate.Otherwise judge to hit net without generation table tennis.
Whether step 4.3, the pressure sensing data for obtaining racket and judgement are received loses points.
Be deployed in the pressure sensor in racket face according to sampling time interval T obtain one's own side's racket hit the table tennis moment it
Pressure sensing data afterwards, are then forwarded to server.Server obtains the pressure sensing data of same sampling instant, when having and
When only a pressure sensing data are more than X, then judge that table tennis is hit by racket, note variable q is the racket for hitting table tennis
Numbering；Judge that table tennis is hit by one's own side's racket again if q=x, now one's own side, which receives, loses points, and terminates；Judge if q ≠ x
Table tennis is tried to be the first shock by other side's racket, and now one's own side receives direct score, terminates.Otherwise judge that table tennis is not hit by racket
Hit.
Step 5, judge whether table tennis lands.
Judge whether k is less than N, if k<N, then make k=k+1, return to step 4；Otherwise judge that table tennis directly lands, now
One's own side, which receives, to lose points, and terminates.
A kind of recognition methods flow chart of losing points of receiving based on table tennis touching, as shown in Figure 3.For convenience of expression, step
4.1st, the related content of step 4.2 and step 4.3 is shown in order in figure 3, is actually to perform simultaneously.
The system and method for the present invention this have the advantage that：
(1) applying pressure sensor can simply and effectively judge table tennis impact bead table, the racket when table tennis is played a game
Time and position with net.
(2) simply and effectively identify to receive whether lose points when table tennis is played a game using Internet of Things network method, it is follow-up right to be advantageous to
The judgement of office's score.
Brief description of the drawings
Fig. 1 is the structural representation of the table tennis system based on pressure sensor of the present invention；
Fig. 2 is a kind of identifying system block diagram of losing points of receiving based on table tennis touching of the present invention；
Fig. 3 is a kind of recognition methods flow chart of losing points of receiving based on table tennis touching of the present invention；
Fig. 4 is the ping-pong table numbering and racket numbering schematic diagram of the embodiment of the present invention.
Embodiment
The preferred embodiment of the present invention is elaborated below.
Ball of the present invention refers to the table tennis for flying over to come from other side in playing a game；Legal ball of the present invention
Refer to the table tennis for meeting table tennis rule for flying over to come from other side in playing a game.
Applying pressure sensor of the present invention, pressure sensor after object pressure by deforming upon so as to produce pressure sensing
Data.As shown in figure 1, disposing pressure sensor respectively in table tennis desktop, racket face and net face obtains pressure sensing data,
Server is then forwarded to, server obtains the pressure sensing data of same sampling instant, judges whether table tennis hits table, by ball
Clap and hit or hit net.Both sides come and go and received in table tennis is played a game, and when certain side's racket is received, server hits table tennis according to racket
Historical data before pang ball judges whether it is legal ball, according to hit table tennis desktop after table, pressure on racket face and net face
Whether the trend for the pressure sensing data identification table tennis that sensor is sent loses points so as to judge that the party receives.
It is the summary that net is hit to table tennis that table tennis of the present invention, which hits net,；The table of the present invention that hits is to table tennis
The summary of pang ball impact ball table.Desktop of the present invention refers to table tennis desktop；Wire side of the present invention refers to table tennis
Wire side；Face of the present invention refers to table tennis.
Table tennis both sides' numbering of playing a game is that A and B, then ball table and racket numbering are the numbering of its corresponding side of playing a game.In ball
Pressure sensor is disposed in desktop, net face and racket face respectively, and pressure sensitive region is covered each by whole desktop, wire side and bat
Face.Sampling time interval T is set, and its value is less than the average time interval that middle table tennis hits twice of playing a game (according to historical data
Statistics obtains)；Positive integer N and M, M are set>N；The threshold X for judging table tennis ball impact is set.State that variable i represents table tennis quilt
Racket hits, when table tennis is hit by racket, then i=1, otherwise i=0；Statement variable j represents that table tennis hits table, works as table tennis
During ball impact ball table, then j=1, otherwise j=0；Statement variable m represents that table tennis hits net, when table tennis hits net, then m=
1, otherwise m=0.In the present embodiment, the both sides that play a game numbering is A and B, and ping-pong table both sides are numbered respectively according to its corresponding side of playing a game
For A and B, corresponding racket numbering is A and B, as shown in Figure 4；36 piezoelectric film sensors are affixed one's name on table tennis desktop top,
12 piezoelectric film sensors of racket face administration, in 8 piezoelectric film sensors of net face administration.Set interval T=10
Millisecond；Positive integer N=50, M=150 are set；Threshold X=5 millivolt (mV) for judging table tennis ball impact are set；State variable i table
Show that table tennis is hit by racket, when table tennis is hit by racket, then i=1, otherwise i=0；Statement variable j represents that table tennis is hit
Table, when table tennis impact bead table, then j=1, otherwise j=0；Statement variable m represents that table tennis hits net, when table tennis impact bead
During net, then m=1, otherwise m=0.
The pressure sensor for being deployed in racket face, ball desktop and net face obtains pressure sensing according to sampling time interval T
Data, it is then forwarded to server；Server obtains the pressure sensing data of same sampling instant, according to racket, ball table and ball
The pressure sensing data of net calculate each sampling instant variable i, variable j and variable m value and record.In the present embodiment, racket
The piezoelectric film sensor in face, net face and the deployment of ball desktop obtains voltage data according to sampling time interval T, is then forwarded to
Server, server judge to obtain the value of variable i, variable m and variable j according to the voltage data of racket, ball table and net；Service
A voltage data 7mV be present in the racket voltage data that device sampling instant obtains>5mV, then judge that table tennis is hit by racket
Hit, record racket numbering A.
The present invention it is a kind of based on table tennis touching identifying system of losing points of receiving, including read historical data and judge be
No module, the pressure of acquisition net of whether losing points of being received for legal ball module, the pressure sensing data of acquisition ball table and judgement
Sensing data and judgement receive whether lose points module, obtain racket pressure sensing data and judge receive whether lose points module,
Judge whether table tennis lands module.
Read historical data and determine whether legal ball module：Remember variable x be hit table tennis racket numbering (with
A lower abbreviation numbering x side is one's own side, and numbering is not that an x side is other side)；Read before one's own side's racket hits the table tennis moment and connect
The value of continuous M sampling instant variable i, variable j and variable m, the value of variable i, variable j and variable m according to sampling instant from it is rear to
(the 1st behavior corresponds to the value of variable i to preceding 3 × M of order composition matrix H, and the 2nd behavior is to dependent variable j value, and the 3rd behavior is correspondingly
Variable m value), racket hits frequency n1The element number of variable i=1 as in matrix H, record the last racket in matrix
The row number m of shock1, note variable y1For the last racket numbering for hitting table tennis；Hit table frequency n2Variable j as in matrix H
=1 element number, record the last row number m for hitting table in matrix2, note variable y2The ball table numbering hit for the last time；
Hit net frequency n3Variable m=1 element number as in matrix H.Meet n when simultaneously1=1, n2=1, m2<m1、n3≤1、x≠
y1, x=y2When, then judge it is now legal ball, variable k=1, variable s=1 are set, while enter the pressure biography for obtaining ball table
Sense data and judge receive whether lose points module, obtain net pressure sensing data and judge receive whether lose points module, obtain
Take the pressure sensing data of racket and judge module of whether losing points of receiving；Otherwise judge it is not now legal ball.The present embodiment
In, the racket numbering that table tennis is hit in certain sampling instant is A, i.e. x=A, then A side is referred to as one's own side, and B side is other side；Read one's own side
Racket hits the value of the variable is of continuous 150 sampling instants, variable j and variable m before the table tennis moment, according to sampling instant from
Order before arriving afterwards forms 3 × 150 matrix H, and the element of wherein variable i=1 only has one, for the element of the 125th row, i.e. n1
=1, m1=125, the racket numbering that the last time hits table tennis is B, i.e. y1=B；Variable j=1 element only has one, is
The element of 35th row, i.e. n2=1, m2=35, the ball table numbering that the last time hits is A, i.e. y2=A；There is no variable m=1 member
Element, i.e. n3=0.Meet n simultaneously1=1, n2=1, m2<m1、n3≤1、x≠y1, x=y2, then judge it is now legal ball, set
Variable k=1, variable s=1, while the pressure sensing data into acquisition ball table and module, the acquisition ball of whether losing points that judge to receive
Whether the pressure sensing data of net and judgement are received loses points module, the pressure sensing data of acquisition racket and judges to receive whether lose
Sub-module.
Obtain the pressure sensing data of ball table and judge module of whether losing points of receiving：It is deployed in the pressure sensor of ball desktop
The pressure sensing data after one's own side's racket hits the table tennis moment are obtained according to sampling time interval T, are then forwarded to service
Device.Server obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then
Judge table tennis impact bead table, note variable p is the ball table numbering hit；If p=x, judge that table tennis hits one's own side's table again
Face, now one's own side, which receives, loses points；If p ≠ x, judge that table tennis rebounds other side's desktop, now one's own side receives and do not lost points.Otherwise sentence
Fixed no generation table tennis impact bead table.In the present embodiment, 36 piezoelectric film sensors of ball desktop are deployed according to sampling
Time interval T obtains the voltage data after one's own side's racket shock table tennis moment, is then forwarded to server.Server according to
The voltage data of the sampling instant judge table tennis whether impact bead table.During k=1, table tennis impact bead table does not occur.
Obtain the pressure sensing data of net and judge module of whether losing points of receiving：It is deployed in the pressure sensor in net face
The pressure sensing data after one's own side's racket hits the table tennis moment are obtained according to sampling time interval T, are then forwarded to service
Device.Server obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then
Judge that table tennis hits net, now judge whether s is less than 2.If s<2, then judge that now table tennis hits net once, makes s=s+1, together
When into obtain ball table pressure sensing data and judge receive whether lose points module, obtain net pressure sensing data and sentence
Disconnecting ball whether lose points module, obtain racket pressure sensing data and judge to receive module of whether losing points；If s >=2, judge
Table tennis repeatedly hits net, and now one's own side, which receives, loses points.Otherwise judge to hit net without generation table tennis.In the present embodiment, portion
8 piezoelectric film sensors in net face are affixed one's name to obtain according to sampling time interval T after one's own side racket hits the table tennis moment
Voltage data, be then forwarded to server.Server judges whether table tennis hits net according to the voltage data of the sampling instant.
During k=1, table tennis does not occur and hits net.
Obtain the pressure sensing data of racket and judge module of whether losing points of receiving：It is deployed in the pressure sensor in racket face
The pressure sensing data after one's own side's racket hits the table tennis moment are obtained according to sampling time interval T, are then forwarded to service
Device.Server obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then
Judge that table tennis is hit by racket, note variable q is the racket numbering for hitting table tennis；Judge table tennis again by oneself if q=x
Square racket hits, and now one's own side, which receives, loses points；Judge that table tennis is tried to be the first shock by other side's racket if q ≠ x, now one's own side receives
Direct score.Otherwise judge that table tennis is not hit by racket.In the present embodiment, 12 piezoelectric membranes for being deployed in racket face pass
Sensor obtains the voltage data after one's own side's racket hits the table tennis moment according to sampling time interval T, is then forwarded to service
Device.Server judges whether table tennis is hit by racket according to the voltage data of the sampling instant.During k=1, do not rattle
Ball is hit by racket.
Judge whether table tennis lands module：When table tennis does not have impact bead table and without shock net and not by racket
During shock, then judge whether k is less than N.If k<N, then k=k+1 is made, while return to the pressure sensing data for obtaining ball table and judgement
Receive whether lose points module, obtain net pressure sensing data and judge receive whether lose points module, obtain racket pressure
Sensing data and judgement are received module of whether losing points；Otherwise judge that table tennis directly lands, now one's own side, which receives, loses points.This implementation
In example, during k=1, k<N=50, make k=k+1=2.The pressure sensing data for obtaining ball table are returned simultaneously and judge whether receive
Module, the pressure sensing data of acquisition net of losing points and module, the pressure sensing data of acquisition racket of whether losing points that judge to receive
And judge module of whether losing points of receiving.
During k=2, judge that table tennis does not have impact bead table, without impact bead by the pressure sensing data of the sampling instant
Net, do not hit by racket.k<N=50, make k=k+1=3.The pressure sensing data for obtaining ball table are returned simultaneously and judge to connect
Ball whether lose points module, obtain net pressure sensing data and judge receive whether lose points module, obtain racket pressure pass
Feel data and judge module of whether losing points of receiving.
During k=3, table tennis impact bead table, the ball table of shock are judged by the pressure sensing data of the ball table sampling instant
Numbering is B, i.e. p=B, p ≠ x, then judges that table tennis rebounds other side's desktop, now one's own side receives and do not lost points.Now system operation
Terminate.
The a kind of of the present invention loses points recognition methods according to the following steps based on receiving for table tennis touching：
Step 1, the numbering and correlated variables that racket and ball table are set.
Table tennis both sides' numbering of playing a game is that A and B, then ball table and racket numbering are the numbering of its corresponding side of playing a game.In ball
Pressure sensor is disposed in desktop, net face and racket face respectively, and pressure sensitive region is covered each by whole desktop, wire side and bat
Face.Sampling time interval T is set, and its value is less than the average time interval that middle table tennis hits twice of playing a game (according to historical data
Statistics obtains)；Positive integer N and M, M are set>N；The threshold X for judging table tennis ball impact is set.State that variable i represents table tennis quilt
Racket hits, when table tennis is hit by racket, then i=1, otherwise i=0；Statement variable j represents that table tennis hits table, works as table tennis
During ball impact ball table, then j=1, otherwise j=0；Statement variable m represents that table tennis hits net, when table tennis hits net, then m=
1, otherwise m=0.In the present embodiment, the both sides that play a game numbering is A and B, and ping-pong table both sides are numbered respectively according to its corresponding side of playing a game
For A and B, corresponding racket numbering is A and B, as shown in Figure 4；36 piezoelectric film sensors are affixed one's name on table tennis desktop top,
12 piezoelectric film sensors of racket face administration, in 8 piezoelectric film sensors of net face administration.Set interval T=10
Millisecond；Positive integer N=50, M=150 are set；Threshold X=5 millivolt (mV) for judging table tennis ball impact are set；State variable i table
Show that table tennis is hit by racket, when table tennis is hit by racket, then i=1, otherwise i=0；Statement variable j represents that table tennis is hit
Table, when table tennis impact bead table, then j=1, otherwise j=0；Statement variable m represents that table tennis hits net, when table tennis impact bead
During net, then m=1, otherwise m=0.
Step 2, record variable i, variable j and variable m value.
The pressure sensor for being deployed in racket face, ball desktop and net face obtains pressure sensing according to sampling time interval T
Data, it is then forwarded to server；Server obtains the pressure sensing data of same sampling instant, according to racket, ball table and ball
The pressure sensing data of net calculate each sampling instant variable i, variable j and variable m value and record；When variable i=1, then
Racket numbering is recorded, into step 3；Otherwise return to step 2.In the present embodiment, the pressure in racket face, net face and the deployment of ball desktop
Conductive film sensor obtains voltage data according to sampling time interval T, is then forwarded to server, server is according to racket, ball
The voltage data of table and net judges to obtain the value of variable i, variable m and variable j；The racket electricity that server sampling instant obtains
A voltage data 7mV be present in pressure data>5mV, then judge that table tennis is hit by racket, be i.e. i=1, then record racket numbering
For A, into step 3.
Step 3, read historical data and determine whether legal ball.
Note variable x be hit table tennis racket numbering (hereinafter referred to as a numbering x side is one's own side, number be not the one of x
Side is other side)；The value that one's own side's racket hits continuous N sampling instant variable i, variable j and variable m before the table tennis moment is read,
(the 1st behavior is to strain for order composition 3 × M of the value of variable i, variable j and variable m according to sampling instant from back to front matrix H
I value is measured, the 2nd behavior is to dependent variable j value, value of the 3rd behavior to dependent variable m), racket hits frequency n1As in matrix H
The element number of variable i=1, record the row number m that the last racket hits in matrix1, note variable y1Table tennis is hit for the last time
The racket numbering of pang ball；Hit table frequency n2Variable j=1 element number as in matrix H, record matrix in the last time hit table
Row number m2, note variable y2The ball table numbering hit for the last time；Hit net frequency n3Variable m=1 element as in matrix H
Number.Meet n when simultaneously1=1, n2=1, m2<m1、n3≤1、x≠y1, x=y2When, then judge it is now legal ball, set
Variable k=1, variable s=1, into step 4；Otherwise judge it is not now good service, terminate.In the present embodiment, when certain is sampled
The racket numbering for carving shock table tennis is A, i.e. x=A, then A side is referred to as one's own side, and B side is other side；Read one's own side's racket and hit table tennis
The value of continuous 150 sampling instant variable is, variable j and variable m before the ball moment, according to the order structure of sampling instant from back to front
Into 3 × 150 matrix H, the element of wherein variable i=1 only has one, for the element of the 125th row, i.e. n1=1, m1=125, most
The racket numbering for closely once hitting table tennis is B, i.e. y1=B；Variable j=1 element only has one, is the element of the 35th row,
That is n2=1, m2=35, the ball table numbering that the last time hits is A, i.e. y2=A；There is no variable m=1 element, i.e. n3=0.Together
When meet n1=1, n2=1, m2<m1、n3≤1、x≠y1, x=y2, then judge it is now legal ball, variable k=1 be set, become
S=1 is measured, into step 4.
Step 4 while obtain the pressure sensing data of ball table, net and racket and judge to receive and whether lose points.Hold simultaneously
Row step 4.1, step 4.2 and step 4.3.
Whether step 4.1, the pressure sensing data for obtaining ball table and judgement are received loses points.
Be deployed in the pressure sensor of ball desktop according to sampling time interval T obtain one's own side's racket hit the table tennis moment it
Pressure sensing data afterwards, are then forwarded to server.Server obtains the pressure sensing data of same sampling instant, when having and
When only a pressure sensing data are more than X, then table tennis impact bead table is judged, note variable p is the ball table numbering hit；If p
=x, then judge that table tennis hits one's own side's desktop again, now one's own side, which receives, loses points, and terminates；If p ≠ x, table tennis bullet is judged
Other side's desktop is returned, now one's own side receives and do not lost points, and terminates.Otherwise judge without generation table tennis impact bead table.In the present embodiment,
Be deployed in 36 piezoelectric film sensors of ball desktop according to sampling time interval T obtain one's own side's racket hit the table tennis moment it
Voltage data afterwards, is then forwarded to server.Server judges whether table tennis hits according to the voltage data of the sampling instant
Batting table.During k=1, table tennis impact bead table does not occur.
Whether step 4.2, the pressure sensing data for obtaining net and judgement are received loses points.
Be deployed in the pressure sensor in net face according to sampling time interval T obtain one's own side's racket hit the table tennis moment it
Pressure sensing data afterwards, are then forwarded to server.Server obtains the pressure sensing data of same sampling instant, when having and
When only a pressure sensing data are more than X, then table tennis hits net, now judges whether s is less than 2.If s<2, then judge now
Table tennis hits net once, makes s=s+1, return to step 4；If s >=2, judge that table tennis repeatedly hits net, now one's own side receives mistake
Point, terminate.Otherwise judge to hit net without generation table tennis.In the present embodiment, 8 piezoelectric membranes for being deployed in net face pass
Sensor obtains the voltage data after one's own side's racket hits the table tennis moment according to sampling time interval T, is then forwarded to service
Device.Server judges whether table tennis hits net according to the voltage data of the sampling instant.During k=1, table tennis does not occur and hits
Net.
Whether step 4.3, the pressure sensing data for obtaining racket and judgement are received loses points.
Be deployed in the pressure sensor in racket face according to sampling time interval T obtain one's own side's racket hit the table tennis moment it
Pressure sensing data afterwards, are then forwarded to server.Server obtains the pressure sensing data of same sampling instant, when having and
When only a pressure sensing data are more than X, then judge that table tennis is hit by racket, note variable q is the racket for hitting table tennis
Numbering；Judge that table tennis is hit by one's own side's racket again if q=x, now one's own side, which receives, loses points, and terminates；Judge if q ≠ x
Table tennis is tried to be the first shock by other side's racket, and now one's own side receives direct score, terminates.Otherwise judge that table tennis is not hit by racket
Hit.In the present embodiment, 12 piezoelectric film sensors for being deployed in racket face are hit according to sampling time interval T acquisition one's own side's rackets
The voltage data hit after the table tennis moment, is then forwarded to server.Server is sentenced according to the voltage data of the sampling instant
Whether disconnected table tennis is hit by racket.During k=1, table tennis does not occur and is hit by racket.
Step 5, judge whether table tennis lands.
Judge whether k is less than N, if k<N, then make k=k+1, return to step 4；Otherwise judge that table tennis directly lands, now
One's own side, which receives, to lose points, and terminates.In the present embodiment, during k=1, k<N=50, make k=k+1=2.Return to step 4.
During k=2, judge that table tennis does not have impact bead table, without impact bead by the pressure sensing data of the sampling instant
Net, do not hit by racket.k<N=50, make k=k+1=3.Return to step 4.
During k=3, judge that table tennis hits net by the pressure sensing data of the net sampling instant, now s=1<2, then make
S=s+1=2 and return to step 4.
During k=4, judge that table tennis hits net by the pressure sensing data of net, now s=2, then judge that table tennis is multiple
Net is hit, now one's own side, which receives, loses points.Terminate.
Certainly, those of ordinary skill in the art is it should be appreciated that above example is intended merely to illustrate this hair
Bright, and limitation of the invention is not intended as, as long as within the scope of the invention, change, modification to above example are all
Protection scope of the present invention will be fallen into.
Claims (10)
1. a kind of identifying system of losing points of receiving based on table tennis touching, it is characterised in that be including reading historical data and judging
No module, the pressure of acquisition net of whether losing points of being received for legal ball module, the pressure sensing data of acquisition ball table and judgement
Sensing data and judgement receive whether lose points module, obtain racket pressure sensing data and judge receive whether lose points module,
Judge whether table tennis lands module.
2. the identifying system of losing points of receiving according to claim 1 based on table tennis touching, it reads historical data and sentenced
Whether disconnected is that legal ball module is characterised by：It is the racket numbering for hitting table tennis to remember variable x；One's own side's racket is read to hit
The value of continuous N sampling instant variable i, variable j and variable m before the table tennis moment, wherein M are positive integers, and variable i represents table tennis
Ball is hit by racket, when table tennis is hit by racket, then i=1, otherwise i=0；Variable j represents that table tennis hits table, works as table tennis
During ball impact ball table, then j=1, otherwise j=0；Variable m represents that table tennis hits net, and when table tennis hits net, then m=1, no
Then m=0；The value of variable i, variable j and variable m forms 3 × M matrix H according to the order of sampling instant from back to front, and racket is hit
Hit frequency n1The element number of variable i=1 as in matrix H, record the row number m that the last racket hits in matrix1, note change
Measure y1For the last racket numbering for hitting table tennis；Hit table frequency n2Variable j=1 element number as in matrix H, note
The last row number m for hitting table in record matrix2, note variable y2The ball table numbering hit for the last time；Hit net frequency n3As square
Variable m=1 element number in battle array H；Meet n when simultaneously1=1, n2=1, m2<m1、n3≤1、x≠y1, x=y2When, then judge
It is now legal ball, variable k=1, variable s=1 is set, while enters the pressure sensing data for obtaining ball table and judge to receive
Module, the pressure sensing data of acquisition net of whether losing points and module, the pressure sensing of acquisition racket of whether losing points that judge to receive
Data and judgement are received module of whether losing points, and otherwise judge it is not now legal ball.
3. the identifying system of losing points of receiving according to claim 1 based on table tennis touching, it obtains the pressure of ball table and passed
Receive module of whether losing points of sense data and judging is characterised by：The pressure sensor of ball desktop is deployed according to setting in advance
Sampling time interval T obtains the pressure sensing data after one's own side's racket shock table tennis moment, is then forwarded to server；Clothes
Business device obtains the pressure sensing data of same sampling instant, and when having and only a pressure sensing data are more than X, wherein X is
The threshold value of the judgement table tennis ball impact set in advance, then judge table tennis impact bead table, and note variable p is the ball table numbering hit；
If p=x, judge that table tennis hits one's own side's desktop again, now one's own side, which receives, loses points, if p ≠ x, judges that table tennis rebounds
Other side's desktop, now one's own side receive and do not lose points；Otherwise judge without generation table tennis impact bead table.
4. the identifying system of losing points of receiving according to claim 1 based on table tennis touching, it obtains the pressure of net and passed
Receive module of whether losing points of sense data and judging is characterised by：The pressure sensor in net face is deployed in according between the sampling time
The pressure sensing data after one's own side's racket hits the table tennis moment are obtained every T, are then forwarded to server；Server obtains same
The pressure sensing data of one sampling instant, when having and only a pressure sensing data are more than X, then judge that table tennis hits net,
Now judge whether s is less than 2；If s<2, then judge that now table tennis hits net once, make s=s+1, while enter and obtain ball table
Whether pressure sensing data and judgement are received loses points module, the pressure sensing data of acquisition net and judges mould of whether losing points of receiving
Block, the pressure sensing data for obtaining racket and judge to receive module of whether losing points, if s >=2, judge that table tennis repeatedly hits net,
Now one's own side, which receives, loses points；Otherwise judge to hit net without generation table tennis.
5. the identifying system of losing points of receiving according to claim 1 based on table tennis touching, it obtains the pressure of racket and passed
Receive module of whether losing points of sense data and judging is characterised by：The pressure sensor in racket face is deployed in according between the sampling time
The pressure sensing data after one's own side's racket hits the table tennis moment are obtained every T, are then forwarded to server；Server obtains same
The pressure sensing data of one sampling instant, when having and only a pressure sensing data are more than X, then judge table tennis by racket
Hit, note variable q is the racket numbering for hitting table tennis；Judge that table tennis is hit by one's own side's racket again if q=x, now
One's own side, which receives, to lose points, and judges that table tennis is tried to be the first shock by other side's racket if q ≠ x, and now one's own side receives direct score；Otherwise sentence
Determine table tennis not hit by racket.
6. the identifying system of losing points of receiving according to claim 1 based on table tennis touching, it judges whether table tennis falls
Ground module is characterised by：When table tennis does not have impact bead table and not shock net and is not hit by racket, then k is judged
Whether N is less than；If k<N, then k=k+1 is made, while return to the pressure sensing data for obtaining ball table and judge mould of whether losing points of receiving
Block, the pressure sensing data for obtaining net and module, the pressure sensing data of acquisition racket and the judgement of whether losing points that judge to receive
Receive module of whether losing points, otherwise judge that table tennis directly lands, now one's own side, which receives, loses points.
A kind of 7. recognition methods of losing points of receiving based on table tennis touching, it is characterised in that：
Step 1, the numbering and correlated variables that racket and ball table are set；
Step 2, record variable i, variable j and variable m value；
Step 3, read historical data and determine whether legal ball；
Step 4 while obtain the pressure sensing data of ball table, net and racket and judge to receive and whether lose points；
Step 5, judge whether table tennis lands.
8. the recognition methods of losing points of receiving according to claim 7 based on table tennis touching, its step 1, step 2 and step
3 are characterised by：
Step 1：Table tennis both sides' numbering of playing a game is that A and B, then ball table and racket numbering are the numbering of its corresponding side of playing a game；
Pressure sensor is disposed in ball desktop, net face and racket face respectively, and pressure sensitive region is covered each by whole desktop, wire side and bat
Face；Sampling time interval T is set；Positive integer N and M, M are set>N；The threshold X for judging table tennis ball impact is set；State variable i table
Show that table tennis is hit by racket, when table tennis is hit by racket, then i=1, otherwise i=0；Statement variable j represents that table tennis is hit
Table, when table tennis impact bead table, then j=1, otherwise j=0；Statement variable m represents that table tennis hits net, when table tennis impact bead
During net, then m=1, otherwise m=0；
Step 2：The pressure sensor for being deployed in racket face, ball desktop and net face obtains pressure biography according to sampling time interval T
Feel data, be then forwarded to server；Server obtains the pressure sensing data of same sampling instant, according to racket, ball table and
The pressure sensing data of net calculate each sampling instant variable i, variable j and variable m value and record；When variable i=1,
Racket numbering is then recorded, into step 3；Otherwise return to step 2；
Step 3：It is the racket numbering for hitting table tennis to remember variable x, and the side that numbering is x is referred to as one's own side；One's own side's racket is read to hit
The value of continuous N sampling instant variable i, variable j and variable m before the table tennis moment is hit, the value of variable i, variable j and variable m is pressed
3 × M matrix H is formed according to the order of sampling instant from back to front, racket hits frequency n1The member of variable i=1 as in matrix H
Plain number, record the row number m that the last racket hits in matrix1, note variable y1Compiled for the last racket for hitting table tennis
Number；Hit table frequency n2Variable j=1 element number as in matrix H, record the last row number m for hitting table in matrix2, note change
Measure y2The ball table numbering hit for the last time；Hit net frequency n3Variable m=1 element number as in matrix H；It is full when simultaneously
Sufficient n1=1, n2=1, m2<m1、n3≤1、x≠y1, x=y2When, then judge it is now legal ball, variable k=1, variable s are set
=1, into step 4, otherwise judge it is not now good service, terminate.
9. the recognition methods of losing points of receiving according to claim 7 based on table tennis touching, its step 4 are characterised by：
Perform step 4.1, step 4.2 and step 4.3 simultaneously；
Whether step 4.1, the pressure sensing data for obtaining ball table and judgement are received loses points：It is deployed in the pressure sensor of ball desktop
The pressure sensing data after one's own side's racket hits the table tennis moment are obtained according to sampling time interval T, are then forwarded to service
Device；Server obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then
Judge table tennis impact bead table, note variable p is the ball table numbering hit；If p=x, judge that table tennis hits one's own side's table again
Face, now one's own side, which receives, loses points, and terminates, if p ≠ x, judges that table tennis rebounds other side's desktop, and now one's own side receives and do not lost points,
Terminate；Otherwise judge without generation table tennis impact bead table；
Whether step 4.2, the pressure sensing data for obtaining net and judgement are received loses points：It is deployed in the pressure sensor in net face
The pressure sensing data after one's own side's racket hits the table tennis moment are obtained according to sampling time interval T, are then forwarded to service
Device；Server obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then
Table tennis hits net, now judges whether s is less than 2；If s<2, then judge that now table tennis hits net once, make s=s+1, return to step
Rapid 4；If s >=2, judge that table tennis repeatedly hits net, now one's own side, which receives, loses points, and terminates；Otherwise judge without generation table tennis
Hit net；
Whether step 4.3, the pressure sensing data for obtaining racket and judgement are received loses points：It is deployed in the pressure sensor in racket face
The pressure sensing data after one's own side's racket hits the table tennis moment are obtained according to sampling time interval T, are then forwarded to service
Device；Server obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then
Judge that table tennis is hit by racket, note variable q is the racket numbering for hitting table tennis；Judge table tennis again by oneself if q=x
Square racket hits, and now one's own side, which receives, loses points, and terminates, and judges that table tennis is tried to be the first shock by other side's racket if q ≠ x, now oneself
Side receives direct score, terminates；Otherwise judge that table tennis is not hit by racket.
10. the recognition methods of losing points of receiving according to claim 7 based on table tennis touching, its step 5 are characterised by：
Judge whether k is less than N, if k<N, then make k=k+1, return to step 4；Otherwise judge that table tennis directly lands, now one's own side receives
Lose points, terminate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711075907.4A CN107823871A (en) | 2017-11-03 | 2017-11-03 | A kind of identifying system and method for losing points of receiving based on table tennis touching |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711075907.4A CN107823871A (en) | 2017-11-03 | 2017-11-03 | A kind of identifying system and method for losing points of receiving based on table tennis touching |
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| CN205759525U (en) * | 2016-06-24 | 2016-12-07 | 江苏经贸职业技术学院 | There is the table tennis table of scoring functions |
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| WO2017089393A1 (en) * | 2015-11-23 | 2017-06-01 | Time Machine Capital Limited | Tracking system and method for determining relative movement of a player within a playing arena and court based player tracking system |
| KR20170070541A (en) * | 2015-12-14 | 2017-06-22 | 경상남도 (교육청) | Table Tennis Practice Apparatus |
| CN106999752A (en) * | 2014-11-20 | 2017-08-01 | 友电子有限公司 | Ping-pong contest execution system including multiples impacts sensor and the ping-pong contest fraction display methods using the system |
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2017
- 2017-11-03 CN CN201711075907.4A patent/CN107823871A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106999752A (en) * | 2014-11-20 | 2017-08-01 | 友电子有限公司 | Ping-pong contest execution system including multiples impacts sensor and the ping-pong contest fraction display methods using the system |
| WO2017089393A1 (en) * | 2015-11-23 | 2017-06-01 | Time Machine Capital Limited | Tracking system and method for determining relative movement of a player within a playing arena and court based player tracking system |
| KR20170070541A (en) * | 2015-12-14 | 2017-06-22 | 경상남도 (교육청) | Table Tennis Practice Apparatus |
| CN205759525U (en) * | 2016-06-24 | 2016-12-07 | 江苏经贸职业技术学院 | There is the table tennis table of scoring functions |
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