CN1480233A - Method and apparatus for measuring parameters of traing tennis - Google Patents
Method and apparatus for measuring parameters of traing tennis Download PDFInfo
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- CN1480233A CN1480233A CNA021354669A CN02135466A CN1480233A CN 1480233 A CN1480233 A CN 1480233A CN A021354669 A CNA021354669 A CN A021354669A CN 02135466 A CN02135466 A CN 02135466A CN 1480233 A CN1480233 A CN 1480233A
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Abstract
A parameter measuring method for tennis training is disclosed, which can measure the impact parameter. Its device features that a piezoelectric sensor and a data processing and dispaly module are installed to tennis racket.
Description
Affiliated technical field
The present invention relates to a kind of device of measuring impact, especially use piezoelectric sender to measure the device that impacts.
Background technology
In the tennis training, sportsman and coach need to understand the energy of completed training parameter as batting number of times, striking speed, the time of playing ball, the consumption of playing ball, so that the arrangement drill program of science.For the training parameter of individual event, as the energy of the striking speed and the consumption of playing ball, existing special measurement device donor educates scientific research or training is used.But in general these measurement devices are not suitable for using anywhere or anytime in the common motion training.In addition, test striking speed, energy etc. use accelerometer as sensing element about the measurement device that impacts mostly, the analog quantity of degree of will speed up meter output is for data processing after mould/number (A/D) conversion again, be processed into training parameters such as striking speed, energy, by the equipment cost height of this method design, be difficult for popularizing.Sportsman and coach press for that a kind of and tennis racket are joining to be reflected directly that the sportsman holds and clap the measurement mechanism that motion conditions, easy combined training parameter, particularly energy measurement are impacted parameter.
Summary of the invention
First purpose of the present invention aims to provide the tennis training parameter method of testing that a kind of easy energy measurement impacts parameter, and simple by the tennis training parametric test equipment of this method design, cost is low, easily popularizes.
Second purpose of the present invention aims to provide the tennis training testing arrangement that a kind of energy measurement that uses the method design that last purpose provides impacts parameter, makes sportsman and coach understand completed combined training amount anywhere or anytime in the common motion training.
First purpose of the present invention realizes by following scheme: tennis training parameter method of testing, it is characterized in that: use to be installed in the piezoelectric transducer on the tennis racket and to be installed in data on the tennis racket and handle and show module, described data are handled and are shown that the vibration signal of module with the output of tennis racket square stance piezoelectric transducer is transformed to the training parameter and write down and show.
Described data handle with show module with the vibration signal of a square stance piezoelectric transducer output of tennis racket as the number of times of once batting.
Described data handle with the count number that shows the vibration signal that module is exported square stance piezoelectric transducer of tennis racket corresponding and be stored in numerical value in the velocity transformation array as striking speed.
Described data are handled and are shown that module is corresponding and be stored in numerical value in the energy change of variable array as the energy of batting with the count number institute of the vibration signal of a square stance piezoelectric transducer output of tennis racket.
The count number of described vibration signal is vibration signal vibration number counting or vibration signal duration counting.
Second purpose of the present invention realizes by following scheme: tennis training parameter testing arrangement, comprise being installed in piezoelectric transducer on the tennis racket and being installed in data on the tennis racket and handle and show module that described data are handled and shown that the vibration signal of module with the output of tennis racket square stance piezoelectric transducer is transformed to the training parameter and write down and show.
Typical embodiment is: described data are handled with showing module and are comprised chip microprocessor, sensor signal amplification and rectification circuit, display, clock circuit, control button and the battery that prestores control and data processor; Battery connects chip microprocessor and sensor signal amplification and rectification circuit; The output of sensor signal amplification and rectification circuit and display, clock circuit, each link of control button are connected with the corresponding function terminal of chip microprocessor respectively.
Wherein, described data are handled with the control and the data processor that show module and are comprised: with the vibration signal of a square stance piezoelectric transducer output of tennis racket as the number of times of once batting.
The count number of the vibration signal of square stance piezoelectric transducer of tennis racket output determined and be stored in numerical value in the velocity transformation array as striking speed.
The count number of the vibration signal of square stance piezoelectric transducer of tennis racket output determined and be stored in numerical value in the energy change of variable array as the energy of batting.
Particularly, the count number of described vibration signal is vibration signal duration counting.
In preferred embodiment: described data are handled with the control and the data processor that show module and are also comprised: the vibration signal of not receiving piezoelectric transducer output behind very first time interval, enter halted state, work on after receiving the vibration signal of piezoelectric transducer output.
And then, described data are handled with the control and the data processor that show module and are also comprised: enter described halted state is not received piezoelectric transducer output again after second time interval vibration signal, enter resting state, need manually press button and change halted state over to.
Further: described data are handled with the control and the data processor that show module and are also comprised: reset function, remove all records, and enter halted state, restart record after receiving the vibration signal of piezoelectric transducer output.
Method of the present invention, directly on racket, show striking speed, energy, cumulative movement amount, make the sportsman fully grasp motion conditions and effect, be convenient to understand, improve training method, improve batting skill and level and have important function, and simple in structure, cost is low.
Description of drawings
, be further described the present invention below in conjunction with drawings and Examples.
Fig. 1 is a workflow diagram of the present invention.
Fig. 2 is a circuit block diagram of the present invention.
The specific embodiment
The tennis training testing arrangement, the data that it comprises the piezoelectric transducer that is installed in tennis racket triangle throat inboard and is installed in the tennis racket triangle throat outside are handled and are shown module, and described data are handled and shown that the vibration signal of module with the output of tennis racket square stance piezoelectric transducer is transformed to the training parameter and write down and show.
Typical training parameter for batting number of times/striking speed/play ball time/energy of playing ball and consuming.
In preferred embodiment: described data are handled with showing module and are not received the vibration signal of piezoelectric transducer output after at interval in the very first time, enter halted state, work on after receiving the vibration signal of piezoelectric transducer output.
And then: enter described halted state is not received piezoelectric transducer output again after second time interval vibration signal, enter resting state, need manually press button and change halted state over to.
Further: described data are handled and are shown that module has reset function, remove all records, enter halted state, restart record after receiving the vibration signal of piezoelectric transducer output.Referring to Fig. 1. referring to Fig. 2
Piezoelectric transducer uses common piezoelectric buzzer on the market in the present embodiment.We utilize tennis racket triangle throat is hollow characteristics, piezoelectric buzzer is close to the inboard of tennis racket triangle throat.Because tennis racket triangle throat is solid, and near frame, the intensity of conduct vibrations and velocity attenuation seldom, the therefore vibration of reflection racket that can be loyal.So promptly can measure more accurately, again can fine protection sensor.
The relation of piezoelectric buzzer signal and striking speed is obtained by following principle.
The mechanical oscillation that racket produces are that the shot by the striker produces, the speed of the big more tennis emission of batting intensity is just big more, according to active force and reaction force principle, the mechanical oscillation that racket is subjected to are just big more, the mechanical deformation amount that corresponding piezoelectric buzzer produces is also big more, and the voltage that piezoelectric buzzer produced is also big more; Because the number of times of the mechanical oscillation that the mechanical oscillation of piezoelectric buzzer induction and tennis racket batting produce is corresponding, multiple pressure electroceramics buz mechanical deformation number of times is many more more for the mechanical oscillation number of times that racket produces, and the number of times of the voltage alternating that piezoelectric buzzer produced is also many more; Striking speed is big more, and the mechanical oscillation duration that racket produces is long more, and the voltage duration that piezoelectric buzzer produced is long more.
Amplitude by piezoelectric voltage that the piezoelectric buzzer that is installed in tennis racket triangle throat inboard is transmitted at square stance, the change frequency of piezoelectric voltage and piezoelectric voltage change these data of duration and carry out integrated treatment, can obtain tennis ball speed and the tennis racket number of times of batting.
When shot took place, piezoelectric buzzer was just sensed mechanical shock from racket, thereby produced continually varying voltage, by this voltage waveform is carried out shaping and amplification, reached the signal that racket testing arrangement processor can be accepted and handle.
When shot produces, on the one hand, the timer of treatment circuit is started working, calculate the duration of signal, thereby this duration with proofread and correct the ratio that draws duration and length velocity relation through the tennis speed of the special-purpose tachymeter of tennis racket producer, obtain striking speed more accurately in the treatment circuit thereby these ratios are recorded in.On the other hand, treatment circuit carries out analog digital conversion (ADC) to piezoelectric signal, the tennis speed that obtains the special-purpose tachymeter of data and tennis racket producer is compared to set up accordingly concern, just imitates as the numerical value that obtains with the testing time.Thereby the calculating by two aspects obtains velocity amplitude more accurately.
Claims (13)
1. tennis training parameter method of testing, it is characterized in that: use to be installed in the piezoelectric transducer on the tennis racket and to be installed in data on the tennis racket and handle and show module, described data are handled and are shown that the vibration signal of module with the output of tennis racket square stance piezoelectric transducer is transformed to the training parameter and write down and show.
2. tennis training parameter method of testing according to claim 1 is characterized in that: described data handle with show module with the vibration signal of a square stance piezoelectric transducer output of tennis racket as the number of times of once batting.
3. tennis training parameter method of testing according to claim 1 is characterized in that: described data are handled with showing module and the count number of the vibration signal of a square stance piezoelectric transducer output of tennis racket is determined and are stored in numerical value in the velocity transformation array as striking speed.
4. tennis training parameter method of testing according to claim 1 is characterized in that: described data are handled with showing module and the count number of the vibration signal of a square stance piezoelectric transducer output of tennis racket is determined and are stored in numerical value in the energy change of variable array as the energy of batting.
5. according to claim 3 or 4 described tennis training parameter method of testings, it is characterized in that: the count number of described vibration signal is vibration signal vibration number counting.
6. according to claim 3 or 4 described tennis training parameter method of testings, it is characterized in that: the count number of described vibration signal is vibration signal duration counting.
7. tennis training parameter testing arrangement, it is characterized in that: comprise being installed in piezoelectric transducer on the tennis racket and being installed in data on the tennis racket and handle and show module that described data are handled and shown that the vibration signal of module with the output of tennis racket square stance piezoelectric transducer is transformed to the training parameter and write down and show.
8. tennis training testing arrangement according to claim 7 is characterized in that: described data are handled with showing module and are comprised chip microprocessor, sensor signal amplification and rectification circuit, display, clock circuit, control button and the battery that prestores control and data processor; Battery connects chip microprocessor and sensor signal amplification and rectification circuit; The output of sensor signal amplification and rectification circuit and display, clock circuit, each link of control button are connected with the corresponding function terminal of chip microprocessor respectively.
9. tennis training testing arrangement according to claim 8 is characterized in that: described data are handled with the control and the data processor that show module and are comprised: with the vibration signal of a square stance piezoelectric transducer output of tennis racket as the number of times of once batting.
10. tennis training testing arrangement according to claim 8 is characterized in that: described data are handled with the control and the data processor that show module and are comprised: the count number of the vibration signal that square stance piezoelectric transducer of tennis racket is exported corresponding and be stored in numerical value in the velocity transformation array as striking speed.
11. tennis training testing arrangement according to claim 8 is characterized in that: described data are handled with the control and the data processor that show module and are comprised: the count number institute of the vibration signal of a square stance piezoelectric transducer output of tennis racket is corresponding and be stored in numerical value in the energy change of variable array as the energy of batting.
12. according to claim 10 or 11 described tennis training testing arrangements, it is characterized in that: the count number of described vibration signal is vibration signal duration counting.
13. according to claim 7 or 8 or 9 or 10 or 11 described tennis training testing arrangements, it is characterized in that: described data are handled with the control and the data processor that show module and are also comprised: the vibration signal of not receiving piezoelectric transducer output behind very first time interval, enter halted state, work on after receiving the vibration signal of piezoelectric transducer output; Enter described halted state is not received piezoelectric transducer output again after second time interval vibration signal, enter resting state, need manually press button and change halted state over to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021354669A CN1480233A (en) | 2002-09-02 | 2002-09-02 | Method and apparatus for measuring parameters of traing tennis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021354669A CN1480233A (en) | 2002-09-02 | 2002-09-02 | Method and apparatus for measuring parameters of traing tennis |
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| Publication Number | Publication Date |
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| CN1480233A true CN1480233A (en) | 2004-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA021354669A Pending CN1480233A (en) | 2002-09-02 | 2002-09-02 | Method and apparatus for measuring parameters of traing tennis |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102333574A (en) * | 2009-01-29 | 2012-01-25 | 耐克国际有限公司 | A kind of locomitivity rating system |
| CN102706301A (en) * | 2012-04-18 | 2012-10-03 | 宋子健 | Method for measuring six-degree-of-freedom movement data of racket |
| CN105241594A (en) * | 2015-10-12 | 2016-01-13 | 小米科技有限责任公司 | Method and device for determining value of consumed energy |
-
2002
- 2002-09-02 CN CNA021354669A patent/CN1480233A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102333574A (en) * | 2009-01-29 | 2012-01-25 | 耐克国际有限公司 | A kind of locomitivity rating system |
| CN102706301A (en) * | 2012-04-18 | 2012-10-03 | 宋子健 | Method for measuring six-degree-of-freedom movement data of racket |
| CN105241594A (en) * | 2015-10-12 | 2016-01-13 | 小米科技有限责任公司 | Method and device for determining value of consumed energy |
| US9878208B2 (en) | 2015-10-12 | 2018-01-30 | Xiaomi Inc. | Method and device for determining value of consumed energy |
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