CN107694061A - Racket judges whether that service and ball move towards system and method after hitting table tennis - Google Patents
Racket judges whether that service and ball move towards system and method after hitting table tennis Download PDFInfo
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- CN107694061A CN107694061A CN201711071501.9A CN201711071501A CN107694061A CN 107694061 A CN107694061 A CN 107694061A CN 201711071501 A CN201711071501 A CN 201711071501A CN 107694061 A CN107694061 A CN 107694061A
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- pressure sensing
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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
- A63B67/00—Sporting games or accessories therefor, not provided for in groups A63B1/00 - A63B65/00
- A63B67/04—Table games physically beneficial for the human body, modelled on outdoor sports, e.g. table tennis
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B25/00—Card tables; Tables for other games
- A47B25/003—Card tables; Tables for other games for table tennis
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- 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
- 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
- A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
- A63B2225/20—Miscellaneous features of sport apparatus, devices or equipment with means for remote communication, e.g. internet or the like
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
Judge whether that service and ball move towards system and method after hitting table tennis the invention discloses racket.Its system include read historical data and determine whether serve a ball module, obtain ball table pressure sensing data and judge table tennis whether impact bead table module, obtain net pressure sensing data and judge table tennis whether hit net module, acquisition racket pressure sensing data and judge table tennis whether by racket shock module, judge whether table tennis lands module.After table tennis is hit by racket, server determines whether to serve a ball according to the historical data before shock, and the trend of table tennis is identified according to the data that pressure sensor gathers on table tennis desktop, racket face and net face after shock.The present invention solves the problems, such as the function that whether the existing table tennis system based on Internet of Things serves a ball after hitting table tennis without racket when judging to play a game and ball moves towards.
Description
Technical field
The invention belongs to smart table tennis Motion Technology field, judges whether to send out after hitting table tennis more particularly to racket
Ball and ball move towards system and method.
Background technology
Whether racket is sent out after hitting table tennis when the existing table tennis system based on Internet of Things is played a game without judgement
The function of ball and ball trend.It is proposed that racket judges whether that service and ball move towards system and method after hitting table tennis for this.
The content of the invention
The technical problems to be solved by the invention are the existing table tennis systems based on Internet of Things without judgement pair
Office when racket hit table tennis after whether serve a ball and ball trend function, propose racket hit table tennis after judge whether service and
Ball moves towards system and method.
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 and judges whether table tennis hits table, quilt
Racket hits or hit net.After table tennis is hit by racket, server determines whether to serve a ball according to the historical data before shock, root
According to the trend for the data identification table tennis that pressure sensor gathers on table tennis desktop, racket face and net face after shock.This hair
It is the summary that net is hit to table tennis that bright described table tennis, which hits net,.
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 M and N are set；The threshold X for judging table tennis ball impact is set.State that variable i represents table tennis by racket
Hit, when table tennis is hit by racket, then i=1, otherwise i=0.
The pressure sensor for being deployed in racket face obtains pressure sensing data according to sampling time interval T, is then forwarded to
Server；The pressure sensor for being deployed in racket face obtains pressure sensing data according to sampling time interval T, is then forwarded to clothes
Business 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 now table tennis is hit by racket, record variable i=1, record racket numbering；Otherwise judge now table tennis not by
Racket hits, record variable i=0.
The racket of the present invention judges whether that service and ball move towards system after hitting table tennis, including reads historical data and sentence
It is disconnected whether be serve a ball module, obtain the pressure sensing data of ball table and judge table tennis whether impact bead table module, acquisition net
Pressure sensing data and judge table tennis whether hit net module, obtain racket pressure sensing data and whether judge table tennis
Module is hit by racket, judges whether table tennis lands module.
Read historical data and determine whether module of serving a ball：It is the racket numbering for hitting table tennis to remember variable x；Read quilt
Racket hits the value of continuous N sampling instant variable i before the moment；Order structure of the value of variable i according to sampling instant from back to front
Into 1 × M matrix H, table tennis is by element number that the frequency n that racket hits is variable i=1 in matrix H.As n=0,
It is service then to judge that now table tennis is hit by racket, sets variable k=1, while enter the pressure sensing data for obtaining ball table
And judge table tennis whether impact bead table module, obtain net pressure sensing data and judge table tennis whether hit net module,
Obtain the pressure sensing data of racket and judge whether table tennis by racket hits module；Otherwise judge it is not service.
Obtain ball table pressure sensing data and judge table tennis whether impact bead table module：It is deployed in the pressure of ball desktop
Sensor obtains the pressure sensing data hit by racket after the moment according to sampling time interval T, is then forwarded to server.
Server obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then judges
Now table tennis impact bead table, note variable y are the ball table numbering hit；If x ≠ y, judge that table tennis is hit by racket first
After fall on other side's desktop；If x=y, judge that table tennis falls on oneself desktop after being hit first by racket.Otherwise judge do not have now
Have and table tennis impact bead table occurs.
Obtain the pressure sensing data of net and judge whether table tennis hits net module：It is deployed in the pressure sensing in net face
Device obtains the pressure sensing data hit by racket after the moment according to sampling time interval T, is then forwarded to server.Service
Device obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then judges table tennis
Ball hits net after being hit first by racket；Otherwise judge now to hit net without generation table tennis.
Obtain the pressure sensing data of racket and judge whether table tennis by racket hits module：It is deployed in the pressure in racket face
Force snesor obtains the pressure sensing data hit by racket after the moment according to sampling time interval T, is 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 now table tennis is hit by racket, note variable z is the racket numbering for hitting table tennis；Table tennis is judged if x=z first
Hit again by oneself racket after being hit by racket；Judge that table tennis is hit after being hit first by racket by other side's racket if x ≠ z
Hit.Otherwise judge that now 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
Table tennis whether impact bead table module, obtain net pressure sensing data and judge table tennis whether hit net module and acquisition ball
The pressure sensing data of bat and judge whether table tennis by racket hits module；Otherwise after judging that table tennis is hit by racket first
Landing.
Racket hit table tennis after judge whether service and ball move towards system system block diagram it is as shown in Figure 2.Each module
Logical order as shown in Fig. 2 wherein obtain ball table pressure sensing data and judge table tennis whether impact bead table module, acquisition
The pressure sensing data of net and judge table tennis whether hit net module and obtain racket pressure sensing data and judge table tennis
Whether ball hits module by racket.
The racket of the present invention judges whether that service and ball move towards method according to the following steps after hitting table tennis：
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 M and N are set；The threshold X for judging table tennis ball impact is set.State that variable i represents table tennis by racket
Hit, when table tennis is hit by racket, then i=1, otherwise i=0.
The value of step 2, record variable i.
The pressure sensor for being deployed in racket face obtains pressure sensing data according to sampling time interval T, is then forwarded to
Server；The pressure sensor for being deployed in racket face obtains pressure sensing data according to sampling time interval T, is then forwarded to clothes
Business 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 now table tennis is hit by racket, record variable i=1, record racket numbering, into step 3；Otherwise now table tennis is judged
Pang ball is not hit by racket, record variable i=0, return to step 2.
Step 3, read historical data and determine whether to serve a ball.
It is the racket numbering for hitting table tennis to remember variable x；Read by continuous N sampling instant variable before the racket shock moment
I value, the value of variable i form 1 × M matrix H, time that table tennis is hit by racket according to the order of sampling instant from back to front
Number n is the element number of variable i=1 in matrix H；As n=0, then it is service to judge that now table tennis is hit by racket, if
Variable k=1 is put, into step 4；Otherwise judge it is not service, terminate.
Step 4 at the same obtain the pressure sensing data of ball table, net and racket and judge table tennis whether impact bead table,
Net or racket.Perform step 4.1, step 4.2 and step 4.3 simultaneously.
Step 4.1, obtain ball table pressure sensing data and judge table tennis whether impact bead table.
The pressure sensor for being deployed in ball desktop obtains the pressure hit by racket after the moment according to sampling time interval T
Sensing data, it is then forwarded to server.Server obtains the pressure sensing data of same sampling instant, when having and only one
When pressure sensing data are more than X, then now table tennis impact bead table is judged, note variable y is the ball table numbering hit；If x ≠ y,
Then judge that table tennis falls on other side's desktop after being hit first by racket, terminate；If x=y, judge that table tennis is hit by racket first
Oneself desktop is fallen on after hitting, is terminated.Otherwise judge now without generation table tennis impact bead table.
Step 4.2, obtain net pressure sensing data and judge whether table tennis hits net.
The pressure sensor for being deployed in net face obtains the pressure hit by racket after the moment according to sampling time interval T
Sensing data, it is then forwarded to server.Server obtains the pressure sensing data of same sampling instant, when having and only one
When pressure sensing data are more than X, then judge that table tennis hits net after being hit first by racket, terminate；Otherwise judge not send out now
Raw table tennis hits net.
Step 4.3, obtain racket pressure sensing data and judge whether table tennis is hit by racket.
The pressure sensor for being deployed in racket face obtains the pressure hit by racket after the moment according to sampling time interval T
Sensing data, it is then forwarded to server.Server obtains the pressure sensing data of same sampling instant, when having and only one
When pressure sensing data are more than X, then judge that now table tennis is hit by racket, note variable z is the racket numbering for hitting table tennis；
Judge that table tennis is hit by oneself racket again after being hit first by racket if x=z, terminate；Table tennis is judged if x ≠ z
Hit, terminate by other side's racket after being hit first by racket.Otherwise judge that now table tennis is not 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 is hit by racket first
Land, terminate after hitting.
Racket judges whether that service and ball move towards method flow diagram after hitting table tennis, as shown in Figure 3.For convenience of expression,
The related content of step 4.1, 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) realized using Internet of Things network method and judge whether service and afterwards ball after racket hits table tennis when table tennis is played a game
Trend, can simply and effectively identify state of the table tennis when playing a game.
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 to judge whether that service and ball move towards system block diagram after the racket of the present invention hits table tennis；
Fig. 3 is to judge whether that service and ball move towards method flow diagram after the racket of the present invention hits table tennis；
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.
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 and judges whether table tennis hits table, quilt
Racket hits or hit net.After table tennis is hit by racket, server determines whether to serve a ball according to the historical data before shock, root
According to the trend for the data identification table tennis that pressure sensor gathers on table tennis desktop, racket face and net face after shock.This hair
It is the summary that net is hit to table tennis that bright described table tennis, which hits net,.
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 M and N are set；The threshold X for judging table tennis ball impact is set.State that variable i represents table tennis by racket
Hit, when table tennis is hit by racket, then i=1, otherwise i=0.In the present embodiment, the both sides that play a game numbering is A and B, is rattled
It is A and B that ball table both sides are numbered respectively according to its corresponding side of playing a game, and it is A and B that corresponding racket, which is numbered, as shown in Figure 4；Rattling
36 piezoelectric film sensors are disposed on ball desktop, in 12 piezoelectric film sensors of racket face administration, 8 are affixed one's name in net face
Piezoelectric film sensor.Data sampling time interval T=10 milliseconds are set；Positive integer M=150, N=50 are set；Set and judge
Threshold X=5mV (millivolt) of table tennis ball impact；Statement variable i represents that table tennis is hit by racket, when table tennis is hit by racket
When, then i=1, otherwise i=0.
The pressure sensor for being deployed in racket face obtains pressure sensing data according to sampling time interval T, is then forwarded to
Server；The pressure sensor for being deployed in racket face obtains pressure sensing data according to sampling time interval T, is then forwarded to clothes
Business 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 now table tennis is hit by racket, record variable i=1, record racket numbering；Otherwise judge now table tennis not by
Racket hits, record variable i=0.In the present embodiment, the pressure sensor for being deployed in racket face obtains according to sampling time interval T
Pressure power sensing data, is then forwarded to server.Server obtains the pressure sensing data of same sampling instant, when having and only
When there are the pressure sensing data to be more than X, then judge that this moment table tennis is hit by racket, racket hits variable i=1, record
Racket is numbered；Otherwise judge that this moment table tennis is not hit by racket, racket hits variable i=0.Server judges certain sampling
Moment table tennis is hit by racket, record variable i=1, and racket numbering is A.
The racket of the present invention judges whether that service and ball move towards system after hitting table tennis, including reads historical data and sentence
It is disconnected whether be serve a ball module, obtain the pressure sensing data of ball table and judge table tennis whether impact bead table module, acquisition net
Pressure sensing data and judge table tennis whether hit net module, obtain racket pressure sensing data and whether judge table tennis
Module is hit by racket, judges whether table tennis lands module.
Read historical data and determine whether module of serving a ball：It is the racket numbering for hitting table tennis to remember variable x；Read quilt
Racket hits the value of continuous N sampling instant variable i before the moment；Order structure of the value of variable i according to sampling instant from back to front
Into 1 × M matrix H, table tennis is by element number that the frequency n that racket hits is variable i=1 in matrix H；As n=0,
It is service then to judge that now table tennis is hit by racket, sets variable k=1, while enter the pressure sensing data for obtaining ball table
And judge table tennis whether impact bead table module, obtain net pressure sensing data and judge table tennis whether hit net module,
Obtain the pressure sensing data of racket and judge whether table tennis by racket hits module；Otherwise judge it is not service.This implementation
In example, the racket numbering x=A of table tennis is hit；Read the value structure that racket hits continuous 150 sampling instant variable is before the moment
Into 1 × 150 matrix H.There is no i=1 element, i.e. n=0, then it is service to judge that table tennis is hit by racket, sets variable k
=1, at the same enter obtain ball table pressure sensing data and judge table tennis whether impact bead table module, acquisition net pressure
Sensing data and judge table tennis whether hit net module, obtain racket pressure sensing data and judge table tennis whether by racket
Hit module.
Obtain ball table pressure sensing data and judge table tennis whether impact bead table module：It is deployed in the pressure of ball desktop
Sensor obtains the pressure sensing data hit by racket after the moment according to sampling time interval T, is then forwarded to server.
Server obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then judges
Now table tennis impact bead table, note variable y are the ball table numbering hit；If x ≠ y, judge that table tennis is hit by racket first
After fall on other side's desktop；If x=y, judge that table tennis falls on oneself desktop after being hit first by racket.Otherwise judge do not have now
Have and table tennis impact bead table occurs.In the present embodiment, 36 pressure sensors of ball desktop are deployed according to sampling time interval T
Obtain by the voltage data after the racket shock moment, be then forwarded to server.Server is according to the sampling instant voltage number
It is judged that 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 whether table tennis hits net module：It is deployed in the pressure sensing in net face
Device obtains the pressure sensing data hit by racket after the moment according to sampling time interval T, is then forwarded to server.Service
Device obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then judges table tennis
Ball hits net after being hit first by racket；Otherwise judge now to hit net without generation table tennis.In the present embodiment, ball is deployed in
8 pressure sensors of wire side obtain the voltage data hit by racket after the moment according to sampling time interval T, then send
To server.Server judges whether table tennis hits net according to the sampling instant voltage data.During k=1, table tennis does not occur
Hit net.
Obtain the pressure sensing data of racket and judge whether table tennis by racket hits module：It is deployed in the pressure in racket face
Force snesor obtains the pressure sensing data hit by racket after the moment according to sampling time interval T, is 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 now table tennis is hit by racket, note variable z is the racket numbering for hitting table tennis；Table tennis is judged if x=z first
Hit again by oneself racket after being hit by racket；Judge that table tennis is hit after being hit first by racket by other side's racket if x ≠ z
Hit.Otherwise judge that now table tennis is not hit by racket.In the present embodiment, be deployed in 12 pressure sensors in racket face by
Obtained according to sampling time interval T by the voltage data after the racket shock moment, be then forwarded to server.Server is according to this
Sampling instant voltage data judges whether table tennis is hit by racket.During k=1, table tennis does not occur and 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
Table tennis whether impact bead table module, obtain net pressure sensing data and judge table tennis whether hit net module and acquisition ball
The pressure sensing data of bat and judge whether table tennis by racket hits module；Otherwise after judging that table tennis is hit by racket first
Landing.In the present embodiment, during k=1, k<N=50, make k=k+1=2.The pressure sensing data for obtaining ball table are returned simultaneously and are sentenced
Disconnected table tennis whether impact bead table module, obtain net pressure sensing data and judge whether table tennis hits net module and acquisition
The pressure sensing data of racket and judge whether table tennis by racket hits module.
During k=2, by the sampling instant pressure sensing data judge table tennis do not have impact bead table, without hit 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 table tennis
Whether impact bead table module, obtain net pressure sensing data and judge table tennis whether hit net module and acquisition racket pressure
Power sensing data and judge whether table tennis by racket hits module.
During k=3, judge that table tennis hits net by the pressure sensing data of the net sampling instant, then judge table tennis
Ball hits net after being hit first by racket.Now system operation terminates.
The racket of the present invention judges whether that service and ball move towards method according to the following steps after hitting table tennis：
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 M and N are set；The threshold X for judging table tennis ball impact is set.State that variable i represents table tennis by racket
Hit, when table tennis is hit by racket, then i=1, otherwise i=0.In the present embodiment, the both sides that play a game numbering is A and B, is rattled
It is A and B that ball table both sides are numbered respectively according to its corresponding side of playing a game, and it is A and B that corresponding racket, which is numbered, as shown in Figure 4；Rattling
36 piezoelectric film sensors are disposed on ball desktop, in 12 piezoelectric film sensors of racket face administration, 8 are affixed one's name in net face
Piezoelectric film sensor.Data sampling time interval T=10 milliseconds are set；Positive integer M=150, N=50 are set；Set and judge
Threshold X=5mV (millivolt) of table tennis ball impact；Statement variable i represents that table tennis is hit by racket, when table tennis is hit by racket
When, then i=1, otherwise i=0.
The value of step 2, record variable i.
The pressure sensor for being deployed in racket face obtains pressure sensing data according to sampling time interval T, is then forwarded to
Server；The pressure sensor for being deployed in racket face obtains pressure sensing data according to sampling time interval T, is then forwarded to clothes
Business 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 now table tennis is hit by racket, record variable i=1, record racket numbering, into step 3；Otherwise now table tennis is judged
Pang ball is not hit by racket, record variable i=0, return to step 2.In the present embodiment, the pressure sensor in racket face is deployed in
Pressure sensing data are obtained according to sampling time interval T, are then forwarded to server.Server obtains the pressure of same sampling instant
Power sensing data, when having and only a pressure sensing data are more than X, then judge that this moment table tennis is hit by racket, ball
Clap and hit variable i=1, record racket numbering；Otherwise judge that this moment table tennis is not hit by racket, racket hits variable i
=0.Server sampling instant judges that table tennis is hit by racket, record variable i=1, and racket numbering is A, into step 3.
Step 3, read historical data and determine whether to serve a ball.
It is the racket numbering for hitting table tennis to remember variable x；Read by continuous N sampling instant variable before the racket shock moment
I value, the value of variable i form 1 × M matrix H, time that table tennis is hit by racket according to the order of sampling instant from back to front
Number n is the element number of variable i=1 in matrix H；As n=0, then it is service to judge that now table tennis is hit by racket, if
Variable k=1 is put, into step 4；Otherwise judge it is not service, terminate.In the present embodiment, the racket numbering x=of table tennis is hit
A；The value of continuous 150 sampling instant variable is forms 1 × 150 matrix H before the reading racket shock moment.There is no i=1 member
Element, i.e. n=0, then it is service to judge that table tennis is hit by racket, variable k=1 is set, into step 4.
Step 4 at the same obtain the pressure sensing data of ball table, net and racket and judge table tennis whether impact bead table,
Net or racket.Perform step 4.1, step 4.2 and step 4.3 simultaneously.
Step 4.1, obtain ball table pressure sensing data and judge table tennis whether impact bead table.
The pressure sensor for being deployed in ball desktop obtains the pressure hit by racket after the moment according to sampling time interval T
Sensing data, it is then forwarded to server.Server obtains the pressure sensing data of same sampling instant, when having and only one
When pressure sensing data are more than X, then now table tennis impact bead table is judged, note variable y is the ball table numbering hit；If x ≠ y,
Then judge that table tennis falls on other side's desktop after being hit first by racket, terminate；If x=y, judge that table tennis is hit by racket first
Oneself desktop is fallen on after hitting, is terminated.Otherwise judge now without generation table tennis impact bead table.In the present embodiment, ball is deployed in
36 pressure sensors of desktop obtain the voltage data hit by racket after the moment, Ran Houfa according to sampling time interval T
Deliver to server.Server according to the sampling instant voltage data judge table tennis whether impact bead table.During k=1, do not occur
Table tennis impact bead table.
Step 4.2, obtain net pressure sensing data and judge whether table tennis hits net.
The pressure sensor for being deployed in net face obtains the pressure hit by racket after the moment according to sampling time interval T
Sensing data, it is then forwarded to server.Server obtains the pressure sensing data of same sampling instant, when having and only one
When pressure sensing data are more than X, then judge that table tennis hits net after being hit first by racket, terminate；Otherwise judge not send out now
Raw table tennis hits net.In the present embodiment, 8 pressure sensors for being deployed in net face obtain according to sampling time interval T
The voltage data after the moment is hit by racket, is then forwarded to server.Server is sentenced according to the sampling instant voltage data
Whether disconnected table tennis hits net.During k=1, table tennis does not occur and hits net.
Step 4.3, obtain racket pressure sensing data and judge whether table tennis is hit by racket.
The pressure sensor for being deployed in racket face obtains the pressure hit by racket after the moment according to sampling time interval T
Sensing data, it is then forwarded to server.Server obtains the pressure sensing data of same sampling instant, when having and only one
When pressure sensing data are more than X, then judge that now table tennis is hit by racket, note variable z is the racket numbering for hitting table tennis；
Judge that table tennis is hit by oneself racket again after being hit first by racket if x=z, terminate；Table tennis is judged if x ≠ z
Hit, terminate by other side's racket after being hit first by racket.Otherwise judge that now table tennis is not hit by racket.The present embodiment
In, 12 pressure sensors for being deployed in racket face obtain the voltage hit by racket after the moment according to sampling time interval T
Data, it is then forwarded to server.Server judges whether table tennis is hit by racket according to the sampling instant voltage data.k
When=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 is hit by racket first
Land, terminate after hitting.In the present embodiment, during k=1, k<N=50, make k=k+1=2.Return to step 4.
During k=2, by the sampling instant pressure sensing data judge table tennis do not have impact bead table, without hit 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, then judge table tennis
Ball hits net after being hit first by racket.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. racket judges whether that service and ball move towards system after hitting table tennis, it is characterised in that including reading historical data and sentencing
It is disconnected whether be serve a ball module, obtain the pressure sensing data of ball table and judge table tennis whether impact bead table module, acquisition net
Pressure sensing data and judge table tennis whether hit net module, obtain racket pressure sensing data and whether judge table tennis
Module is hit by racket, judges whether table tennis lands module.
2. racket according to claim 1 judges whether that service and ball move towards system after hitting table tennis, it reads history
Data and determine whether serve a ball module be characterised by：It is the racket numbering for hitting table tennis to remember variable x；Reading is hit by racket
The value of continuous N sampling instant variable i before the moment is hit, wherein M is positive integer, and variable i represents that table tennis is hit by racket, when table tennis
When pang ball is hit by racket, then i=1, otherwise i=0；The value of variable i forms 1 × M according to the order of sampling instant from back to front
Matrix H, table tennis is by element number that the frequency n that racket hits is variable i=1 in matrix H；As n=0, then judge
It is service that now table tennis is hit by racket, sets variable k=1, while enter the pressure sensing data for obtaining ball table and judgement
Table tennis whether impact bead table module, obtain net pressure sensing data and judge table tennis whether hit net module, acquisition ball
The pressure sensing data of bat and judge whether table tennis by racket hits module, otherwise judge it is not service.
3. racket according to claim 1 judges whether that service and ball move towards system after hitting table tennis, it obtains ball table
Pressure sensing data and judge whether impact bead table module is characterised by table tennis：It is deployed in the pressure sensor of ball desktop
Obtained according to the sampling time interval T set in advance by the pressure sensing data after the racket shock moment, be then forwarded to clothes
Business device；Server obtains the pressure sensing data of same sampling instant, 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 judges now table tennis impact bead table, and note variable y is shock
Ball table numbering, if x ≠ y, judge table tennis hit first by racket after fall on other side's desktop, if x=y, judge table tennis
Ball falls on one's own side's desktop after being hit first by racket；Otherwise judge now without generation table tennis impact bead table.
4. racket according to claim 1 judges whether that service and ball move towards system after hitting table tennis, it obtains net
Pressure sensing data and judge whether table tennis hits net module and be characterised by：Be deployed in the pressure sensor in net face according to
Sampling time interval T obtains the pressure sensing data hit by racket after the moment, is then forwarded to server；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 first
Net is hit after being hit by racket, otherwise judges now to hit net without generation table tennis.
5. racket according to claim 1 judges whether that service and ball move towards system after hitting table tennis, it obtains racket
Pressure sensing data and judge table tennis whether by racket hit module be characterised by：It is deployed in the pressure sensing in racket face
Device obtains the pressure sensing data hit by racket after the moment according to sampling time interval T, is then forwarded to server；Service
Device obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then judges now
Table tennis is hit by racket, and note variable z is the racket numbering for hitting table tennis；Judge that table tennis is hit by racket first if x=z
Hit again by one's own side's racket after hitting, judge that table tennis is hit after being hit first by racket by other side's racket if x ≠ z；Otherwise
Judge that now table tennis is not hit by racket.
6. racket according to claim 1 judges whether that service and ball move towards system after hitting table tennis, it judges table tennis
Whether ball, which lands module, is characterised by：When table tennis does not have impact bead table and not shock net and is not hit by racket
When, then judge whether k is less than N, N is positive integer；If k<N, then k=k+1 is made, while return to the pressure sensing data for obtaining ball table
And judge table tennis whether impact bead table module, obtain net pressure sensing data and judge table tennis whether hit net module and
Obtain the pressure sensing data of racket and judge whether table tennis by racket hits module, otherwise judgement table tennis is first by racket
Landed after shock.
7. racket judges whether that service and ball move towards method after hitting table tennis, it is characterised in that：
Step 1, the numbering and correlated variables that racket and ball table are set；
The value of step 2, record variable i；
Step 3, read historical data and determine whether to serve a ball；
Step 4 at the same obtain the pressure sensing data of ball table, net and racket and judge table tennis whether impact bead table, net
Or racket；
Step 5, judge whether table tennis lands.
8. racket according to claim 7 judges whether that service and ball move towards method after hitting table tennis, its step 1, step
Rapid 2 and step 3 be 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 M and N are set；The threshold X for judging table tennis ball impact is set；State that variable i represents table tennis
Pang ball is hit by racket, when table tennis is hit by racket, then i=1, otherwise i=0；
Step 2：The pressure sensor for being deployed in racket face obtains pressure sensing data according to sampling time interval T, then sends
To server；The pressure sensor for being deployed in racket face obtains pressure sensing data according to sampling time interval T, is then forwarded to
Server；Server obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X
When, then judge that this sampling instant table tennis is hit by racket, record variable i=1, record racket numbering, into step 3；Otherwise
Judge that this sampling instant table tennis is not hit by racket, record variable i=0, return to step 2；
Step 3：It is the racket numbering for hitting table tennis to remember variable x；Continuous N sampling instant before hitting the moment by racket is read to become
I value is measured, the value of variable i forms 1 × M matrix H according to the order of sampling instant from back to front, and table tennis is hit by racket
Frequency n is the element number of variable i=1 in matrix H；As n=0, then it is service to judge that now table tennis is hit by racket,
Variable k=1 is set, into step 4；Otherwise judge it is not service, terminate.
9. racket according to claim 7 judges whether that service and ball move towards method after hitting table tennis, the spy of its step 4
Sign is：Perform step 4.1, step 4.2 and step 4.3 simultaneously；
Step 4.1, obtain ball table pressure sensing data and judge table tennis whether impact bead table：It is deployed in the pressure of ball desktop
Sensor obtains the pressure sensing data hit by racket after the moment according to sampling time interval T, is then forwarded to server；
Server obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then judges
Now table tennis impact bead table, note variable y are the ball table numbering hit；If x ≠ y, judge that table tennis is hit by racket first
After fall on other side's desktop, terminate, if x=y, judge table tennis hit first by racket after fall on one's own side's desktop, terminate；Otherwise
Judge now without generation table tennis impact bead table；
Step 4.2, obtain net pressure sensing data and judge whether table tennis hits net：It is deployed in the pressure sensing in net face
Device obtains the pressure sensing data hit by racket after the moment according to sampling time interval T, is then forwarded to server；Service
Device obtains the pressure sensing data of same sampling instant, when having and only a pressure sensing data are more than X, then judges table tennis
Ball hits net after being hit first by racket, terminate, and otherwise judges now to hit net without generation table tennis；
Step 4.3, obtain racket pressure sensing data and judge whether table tennis is hit by racket：It is deployed in the pressure in racket face
Force snesor obtains the pressure sensing data hit by racket after the moment according to sampling time interval T, is 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 now table tennis is hit by racket, note variable z is the racket numbering for hitting table tennis；Table tennis is judged if x=z first
Hit again by one's own side's racket after being hit by racket, terminate, judge table tennis after being hit first by racket by other side if x ≠ z
Racket hits, and terminates；Otherwise judge that now table tennis is not hit by racket.
10. racket according to claim 7 judges whether that service and ball move towards method after hitting table tennis, its step 5
It is 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 is hit by racket first
Land, terminate after hitting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711071501.9A CN107694061A (en) | 2017-11-03 | 2017-11-03 | Racket judges whether that service and ball move towards system and method after hitting table tennis |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711071501.9A CN107694061A (en) | 2017-11-03 | 2017-11-03 | Racket judges whether that service and ball move towards system and method after hitting table tennis |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7520827B1 (en) * | 2008-06-04 | 2009-04-21 | Charles Michael Esposito | Electronic table tennis |
| US20110312450A1 (en) * | 2010-06-21 | 2011-12-22 | Sami Ahmad Al-Abdrabbuh | Automated table tennis referee |
| CN204319699U (en) * | 2015-01-06 | 2015-05-13 | 江苏农牧科技职业学院 | The ping-pong table of automatic judgement |
| 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 |
| CN106512357A (en) * | 2016-12-05 | 2017-03-22 | 高元龙 | Intelligent table tennis judging device |
| 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 |
-
2017
- 2017-11-03 CN CN201711071501.9A patent/CN107694061A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7520827B1 (en) * | 2008-06-04 | 2009-04-21 | Charles Michael Esposito | Electronic table tennis |
| US20110312450A1 (en) * | 2010-06-21 | 2011-12-22 | Sami Ahmad Al-Abdrabbuh | Automated table tennis referee |
| 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 |
| CN204319699U (en) * | 2015-01-06 | 2015-05-13 | 江苏农牧科技职业学院 | The ping-pong table of automatic judgement |
| 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 |
| CN106512357A (en) * | 2016-12-05 | 2017-03-22 | 高元龙 | Intelligent table tennis judging device |
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Application publication date: 20180216 |