CN2593156Y - Tennis training measuring device - Google Patents
Tennis training measuring device Download PDFInfo
- Publication number
- CN2593156Y CN2593156Y CN 02269366 CN02269366U CN2593156Y CN 2593156 Y CN2593156 Y CN 2593156Y CN 02269366 CN02269366 CN 02269366 CN 02269366 U CN02269366 U CN 02269366U CN 2593156 Y CN2593156 Y CN 2593156Y
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- tennis
- data processing
- vibration signal
- piezoelectric sensor
- tennis racket
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Abstract
The utility model relates to a tennis training parameter measuring device which provides a simple tennis training parameter measuring method which can measure impact parameters. The tennis training parameter measuring device adopting the method has the advantages of simple device and low cost. The utility model is characterized in that a piezoelectric sensor arranged on a tennis racket and a data processing and displaying module arranged on the tennis racket are used; the data processing and displaying module changes vibration signals output from the piezoelectric sensor when a tennis ball is driven with a tennis racket into training parameters which are recorded and displayed.
Description
Affiliated technical field
The utility model relates to a kind of device of measuring impact, especially uses piezoelectric sender to measure the device that impacts.
Background technology
In the tennis training, sportsman and trainer 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 training plan of science.For the training parameter of individual event, as the energy of the striking speed and the consumption of playing ball, existing special measuring equipment donor educates scientific research or training is used.But in general these measuring equipments are not suitable for using anywhere or anytime in the common motion training.In addition, test striking speed, energy etc. use accelerometer as sensitive element about the measuring equipment 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 trainer 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.
The utility model content
The purpose of this utility model aims to provide the tennis training proving installation that a kind of energy measurement impacts parameter, makes sportsman and trainer understand completed combined training amount anywhere or anytime in the common motion training.
The purpose of this utility model realizes by following scheme: use be installed in the piezoelectric sensor on the tennis racket and be installed on the tennis racket data processing with show module, described data processing with show that the vibration signal of module with the output of tennis racket square stance piezoelectric sensor is transformed to the training parameter and write down and show.
Described data processing with show module with the vibration signal of a square stance piezoelectric sensor output of tennis racket as the number of times of once batting.
Described data processing is determined the count number of the vibration signal of a square stance piezoelectric sensor output of tennis racket and is stored in numerical value in the velocity transformation array as striking speed with showing module.
Described data processing is determined the count number of the vibration signal of a square stance piezoelectric sensor output of tennis racket and is stored in numerical value in the energy change of variable array as the energy of batting with showing module.
The count number of described vibration signal is vibration signal vibration number counting or vibration signal duration counting.
The utility model designs as lower device based on said method: the tennis training proving installation, comprise be installed in piezoelectric sensor on the tennis racket and be installed on the tennis racket data processing with show module, described data processing with show that the vibration signal of module with the output of tennis racket square stance piezoelectric sensor is transformed to the training parameter and write down and show.
Typical embodiment is: described data processing comprises chip microprocessor, sensor signal amplification and rectification circuit, display, clock circuit, control button and the battery that prestores control and data processor with showing module; Battery connects chip microprocessor and sensor signal amplification and rectification circuit; The output terminal 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 processing comprises with the control and the data processor that show module: with the vibration signal of a square stance piezoelectric sensor output of tennis racket as the number of times of once batting.
With the count number institute correspondence of the vibration signal of square stance piezoelectric sensor of tennis racket output and be stored in numerical value in the velocity transformation array as striking speed.
The count number institute of the vibration signal of square stance piezoelectric sensor of tennis racket output is corresponding and be stored in numerical value in can the 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 processing also comprises with the control and the data processor that show module: the vibration signal of not receiving piezoelectric sensor output behind very first time interval, enter halted state, work on after receiving the vibration signal of piezoelectric sensor output.
And then, described data processing also comprises with the control and the data processor that show module: enter described halted state is not received piezoelectric sensor output again after second time interval vibration signal, enter dormant state, need manually press button and change halted state over to.
Further: described data processing also comprises with the control and the data processor that show module: reset function, remove all records, and enter halted state, restart record after receiving the vibration signal of piezoelectric sensor output.
Method of the present utility model, 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 vital role, and simple in structure, cost is low.
Description of drawings
, be further described the utility model below in conjunction with drawings and Examples.
Fig. 1 is the utility model workflow diagram.
Fig. 2 is the utility model circuit block diagram.Fig. 3 is the utility model wiring diagram.
Embodiment
The tennis training proving installation, the data processing that it comprises the piezoelectric sensor that is installed in tennis racket triangle throat inboard and is installed in the tennis racket triangle throat outside with show module, described data processing with show that the vibration signal of module with the output of tennis racket square stance piezoelectric sensor 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 processing is not received the vibration signal of piezoelectric sensor output with showing module after at interval in the very first time, enters halted state, works on after receiving the vibration signal of piezoelectric sensor output.
And then: enter described halted state is not received piezoelectric sensor output again after second time interval vibration signal, enter dormant state, need manually press button and change halted state over to.
Further: described data processing has reset function with showing module, removes all records, enters halted state, restarts record after receiving the vibration signal of piezoelectric sensor output.Referring to Fig. 1. referring to Fig. 2
Piezoelectric sensor 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 vibration 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 acting force and reacting force principle, the mechanical vibration 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 vibration that the mechanical vibration 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 vibration 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 vibration 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 overall 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 proving installation processor can be accepted and handle.
When shot produces, on the one hand, the timer of treatment circuit is started working, the duration of signal calculated, thereby this duration with proofread and correct the ratio that draws duration and length velocity relation through the tennis speed of the special-purpose knotmeter 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 (DC) to piezoelectric signal, the tennis speed that obtains the special-purpose knotmeter of data and tennis racket producer is compared to set up accordingly concern, just imitates as the numerical value that obtains with the test duration.Thereby the calculating by two aspects obtains velocity amplitude more accurately.
Claims (7)
1. tennis training parameter proving installation, it is characterized in that: comprise be installed in piezoelectric sensor on the tennis racket and be installed on the tennis racket data processing with show module, described data processing with show that the vibration signal of module with the output of tennis racket square stance piezoelectric sensor is transformed to the training parameter and write down and show.
2. tennis training proving installation according to claim 1 is characterized in that: described data processing comprises chip microprocessor, sensor signal amplification and rectification circuit, display, clock circuit, control button and the battery that prestores control and data processor with showing module; Battery connects chip microprocessor and sensor signal amplification and rectification circuit; The output terminal 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.
3. tennis training proving installation according to claim 1 is characterized in that: described data processing comprises with the control and the data processor that show module: with the vibration signal of a square stance piezoelectric sensor output of tennis racket as the number of times of once batting.
4. tennis training proving installation according to claim 1 is characterized in that: described data processing comprises with the control and the data processor that show module: be stored in numerical value in the velocity transformation array as striking speed with the count number of the vibration signal of a square stance piezoelectric sensor output of tennis racket is corresponding.
5. tennis training proving installation according to claim 1 is characterized in that: described data processing comprises with the control and the data processor that show module: the count number of the vibration signal of a square stance piezoelectric sensor output of tennis racket is determined and be stored in numerical value in the energy change of variable array as the energy of batting.
6. according to claim 3 or 4 described tennis training proving installations, it is characterized in that: the count number of described vibration signal is vibration signal duration counting.
7. according to claim 1 or 2 or 3 or 4 or 5 described tennis training proving installations, it is characterized in that: described data processing also comprises with the control and the data processor that show module: the vibration signal of not receiving piezoelectric sensor output behind very first time interval, enter halted state, work on after receiving the vibration signal of piezoelectric sensor output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02269366 CN2593156Y (en) | 2002-09-02 | 2002-09-02 | Tennis training measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02269366 CN2593156Y (en) | 2002-09-02 | 2002-09-02 | Tennis training measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2593156Y true CN2593156Y (en) | 2003-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02269366 Expired - Fee Related CN2593156Y (en) | 2002-09-02 | 2002-09-02 | Tennis training measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2593156Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846564A (en) * | 2010-03-24 | 2010-09-29 | 鲁东大学 | Method for measuring impact force based on impulse principle and detection system |
| CN109091832A (en) * | 2018-09-04 | 2018-12-28 | 深圳市定尔志电子有限公司 | A kind of racket and its control method with elastic network(s) |
-
2002
- 2002-09-02 CN CN 02269366 patent/CN2593156Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846564A (en) * | 2010-03-24 | 2010-09-29 | 鲁东大学 | Method for measuring impact force based on impulse principle and detection system |
| CN109091832A (en) * | 2018-09-04 | 2018-12-28 | 深圳市定尔志电子有限公司 | A kind of racket and its control method with elastic network(s) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |