CN101468250A - Device for judging and alarming net ball for tennis match - Google Patents
Device for judging and alarming net ball for tennis match Download PDFInfo
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- CN101468250A CN101468250A CNA2007101738107A CN200710173810A CN101468250A CN 101468250 A CN101468250 A CN 101468250A CN A2007101738107 A CNA2007101738107 A CN A2007101738107A CN 200710173810 A CN200710173810 A CN 200710173810A CN 101468250 A CN101468250 A CN 101468250A
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Abstract
The invention relates to a device for judging a net ball and alarming in a tennis match, which is arranged between a net and a net rack. The device comprises a swing link, a judging unit and an alarming unit, wherein the swing link is arranged at a net belt at the upper end of the net, the upper end of the swing link is fixedly connected with the net belt and the swing is vertical to the ground; a rack body on one side of the net rack consists of two half upright posts, the swing link is arranged between the two half upright posts, and an infrared transmitting terminal and an infrared receiving terminal are correspondingly arranged on the half upright posts respectively; the infrared transmitting terminal and the infrared receiving terminal are ensured to be separated intermediately by the swing link when the net is still; the judging unit is used for receiving a signal from the infrared receiving terminal and judging that a ball touches the net; and the alarming unit is connected with the judging unit and alarms according to the judgment of the net bal. The device mainly solves the prior technical problems that a net ball in a tennis match is mainly judged by the human perception, and the judgment is slow and not objective enough, and also alarms after the judgment of the net ball, thereby improving the objectivity and fairness of tennis matches.
Description
Technical field
The present invention relates to the sports playing equipment, particularly a kind of device for judging and alarming net ball for tennis match.
Background technology
Tennis is higher sports of popularization degree in the world, and tennis tournament with it a lot of football fan and spectators of quick and fierce attraction person.Used equipment also comprises being arranged at net and the net that tennis court central authorities are used to separate the place except racket, tennis that the sportsman uses in tennis tournament.Below be the structure of disclosed several nets and net in the prior art:
As Chinese utility model patent specification (Granted publication number: CN2218008Y) disclose a kind of support that is used to support nets such as vollyball, tennis, shuttlecock, formed by column, joint, built-in fitting.Joint divides top connection, lower contact two parts, and the column bottom is fixed in top connection, and the built-in fitting top is fixed in lower contact, and upper and lower joint constitutes removable the connection by flange and groove structure.It is simple in structure, compact, and the mounting or dismounting column is very convenient, is suitable for the common occasion in movement size place.
And for example Chinese utility model patent specification (Granted publication number: CN2339259Y) disclose a kind of Tennis net frame, prop up the extension net with single-sheaved block and steel wire rope, its feature is that effort-saving mechanism is set on net post, this effort-saving mechanism mainly is made of double-thread worm and helical gear, helical gear and double-thread worm engagement, drive helical gear by double-thread worm and rotate, sleeve is fixed on the helical gear shaft, is used for lay winding wire ropes.Net is strained by effort-saving mechanism, and it is loosening to rest on the optional position, shakes briskly, and fine setting is convenient, and size is accurate, is tennis training, amusement, and formal competition provides reliable assurance.
Chinese for another example utility model patent specification (Granted publication number: CN2347620Y) disclose a kind of combined type tennis net, comprise net, place the wire rope handling and the guipure of online end, and be in the middle center band of net, and guipure leans on the thread gluing doubling to be loaded on the top of net, and flexible strand is arranged in the band of center, the lower end is packed on the wirerope, this tennis net, linked network and to unload net all very convenient, and the feature of long service life is arranged.
As mentioned above, the structure Design of existing net and net mainly is to pay attention to being connected and fixed with the height of net of net regulate, and does not embody the laws of the game that cooperate tennis tournament and the unique design of making.
According to the service rules of tennis tournament, after the net, if in tennis falls still that the opponent serves the district, the receiver does not perform the preparation of receiving; All should re-serve.Therefore, existing tennis device all can not cooperate this rule to make the judgement of let, currently used method mainly is the net judge of end outfit at net, when the sportsman serves a ball, this judge catches and touches the guipure of net upper end, when plunking a serve into the net or during net, judge's finger will be experienced the vibrations of net, send to the referee with this and to plunk a serve into the net or the signal of net.
But, the judgement of above-mentioned service touching the net mainly is to judge for perception by the people, judge that not only speed is slower, and also to send signal after being judged as net by shouting in net judge's mouth, could allow the referee hear, in case the referee does not hear this signal, the net judge must shout again, so efficient is lower.
Summary of the invention
The object of the present invention is to provide a kind of device for judging and alarming net ball for tennis match, the judgement that mainly solves the service touching the net ball of existing tennis tournament mainly is to rely on the people to be perception, therefore the slowly and not enough objective technical problem of judgement speed, it can also send alerting tone after service is judged as let, improved the objectivity and the fairness of tennis match.
For addressing the above problem, the present invention is achieved in that
A kind of device for judging and alarming net ball for tennis match is characterized in that it is arranged between net and the net; It comprises that one is arranged on the fork on the upper end guipure of net, the upper end of this fork fixedly connected with guipure and fork perpendicular to the ground; This net one side frame body is made up of two half columns, and this fork is arranged between two half columns, and on the half column respectively correspondence one infrared ray transmitting terminal and infrared ray receiving terminal are set; Guarantee that when net is static infrared ray transmitting terminal, infrared ray receiving terminal are cut off in the centre by fork; One judgement unit, the signal that can be used for the receiving infrared-ray receiving terminal is made the service touching the net judgement; One Alarm Unit, its connects judgement unit and judges according to service touching the net alarms.
Described device for judging and alarming net ball for tennis match is characterized in that the net of both sides and net are provided with let judgement alarm device.
Described device for judging and alarming net ball for tennis match is characterized in that two half column upper ends of this net are provided with top cover.
Described device for judging and alarming net ball for tennis match is characterized in that interconnecting between two half columns outside of this net.
By technique scheme, the present invention has following advantage:
When apparatus of the present invention were used, when service touching the net, fork will be swung under the drive of guipure, and at this moment infrared signal can be received by infrared receiving terminal, and judgement unit can be controlled Alarm Unit according to this and carry out the let alarm.Therefore, can accomplish fast and efficient, and can reduce a net judge in the tennis tournament for the judgement of service touching the net.
Description of drawings
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is that the electric component of apparatus of the present invention connects block diagram.
Among the figure:
1-net;
11-guipure;
2-net;
21,22-half column;
23-top cover;
3-judgement unit;
31-fork;
32-infrared ray transmitting terminal;
33-infrared ray receiving terminal;
4-Alarm Unit.
The specific embodiment
See also Fig. 1, the invention discloses a kind of device for judging and alarming net ball for tennis match.As shown in the figure: it is arranged between net 1 and the net 2.It comprises: one is arranged on the fork 31 on the upper end guipure 11 of net 1, the upper end of this fork 31 fixedly connected with guipure 11 and fork 31 perpendicular to the ground.These net 2 one side frame body are made up of two half columns 21,22, and this fork 31 is arranged between two half columns 21,22, and on the half column 21,22 respectively correspondence one infrared ray transmitting terminal 32 and infrared ray receiving terminal 33 are set; Guarantee that when net is static infrared ray transmitting terminal 32, infrared ray receiving terminal 33 are cut off in the centre by fork 31.This infrared ray transmitting terminal 32, infrared ray receiving terminal 33 can select for use ROHM Japan rom series infrared emission to receive pipe, model: SIR-381SB3F/RPM.One judgement unit 3, the signal that can be used for receiving infrared-ray receiving terminal 33 is made the service touching the net judgement, and this judgement unit 3 can adopt 8051 or 8031 single-chip microcomputers.One Alarm Unit 4, its connects judgement unit 3 and judges according to service touching the net alarms, and this Alarm Unit 4 generally can adopt buzzer.
During use, when service touching the net, fork 31 will be swung under the drive of guipure 11, and at this moment infrared signal can be received by infrared receiving terminal 33, and judgement unit 3 can be controlled Alarm Unit 4 according to this and carry out the let alarm.Use this device not only can objectively judge service touching the net, and interpretation speed is fast, alarm in time in addition, can also reduce the judge of a tennis tournament.
As a kind of preferred version: the net 1 of both sides and net 2 are provided with let and judge alarm device.
As a kind of priority scheme: two half columns, 21,22 upper ends of this net 2 are provided with top cover 23, can prevent Sometimes When It Rains rain damage fork 31 and infrared components like this.
As a kind of preferred version: interconnect between two half columns, 21,22 outsides of this net 2, can reduce the amplitude of oscillation of fork 31 like this.
Being preferred embodiment of the present invention only in sum, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should be technology category of the present invention.
Claims (4)
1, a kind of device for judging and alarming net ball for tennis match is characterized in that it is arranged between net (1) and the net (2); It comprises that one is arranged on the fork (31) on the upper end guipure (11) of net (1), the upper end of this fork (31) fixedly connected with guipure (11) and fork (31) perpendicular to the ground; These net (2) one side frame body are made up of two half columns (21), (22), this fork (31) is arranged between two half columns (21), (22), and on the half column (21), (22) respectively correspondence one infrared ray transmitting terminal (32) and infrared ray receiving terminal (33) are set; Guarantee that when net is static infrared ray transmitting terminal (32), infrared ray receiving terminal (33) are cut off in the centre by fork (31); One judgement unit (3), the signal that can be used for receiving infrared-ray receiving terminal (33) is made the service touching the net judgement; One Alarm Unit (4), its connects judgement unit (3) and judges according to service touching the net alarms.
2, device for judging and alarming net ball for tennis match according to claim 1 is characterized in that the net (1) of both sides and net (2) are provided with let judgement alarm device.
3, device for judging and alarming net ball for tennis match according to claim 1 and 2 is characterized in that two half columns (21) of this net (2), (22) upper end are provided with top cover (23).
4, device for judging and alarming net ball for tennis match according to claim 1 and 2 is characterized in that interconnecting between two half columns (21), (22) outside of this net (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101738107A CN101468250A (en) | 2007-12-29 | 2007-12-29 | Device for judging and alarming net ball for tennis match |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101738107A CN101468250A (en) | 2007-12-29 | 2007-12-29 | Device for judging and alarming net ball for tennis match |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101468250A true CN101468250A (en) | 2009-07-01 |
Family
ID=40826207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101738107A Pending CN101468250A (en) | 2007-12-29 | 2007-12-29 | Device for judging and alarming net ball for tennis match |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101468250A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861273A (en) * | 2014-01-13 | 2014-06-18 | 东南大学 | Portable photoelectric badminton field simulating device |
| CN107694062A (en) * | 2017-11-03 | 2018-02-16 | 杭州乾博科技有限公司 | A kind of judgement system and method for flying over table tennis before net and whether touching net |
| CN107832522A (en) * | 2017-11-03 | 2018-03-23 | 杭州乾博科技有限公司 | The computing system and method for height and angle when a kind of table tennis flies over net |
-
2007
- 2007-12-29 CN CNA2007101738107A patent/CN101468250A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861273A (en) * | 2014-01-13 | 2014-06-18 | 东南大学 | Portable photoelectric badminton field simulating device |
| CN103861273B (en) * | 2014-01-13 | 2016-08-17 | 东南大学 | A kind of portable light electrical analogue court device |
| CN107694062A (en) * | 2017-11-03 | 2018-02-16 | 杭州乾博科技有限公司 | A kind of judgement system and method for flying over table tennis before net and whether touching net |
| CN107832522A (en) * | 2017-11-03 | 2018-03-23 | 杭州乾博科技有限公司 | The computing system and method for height and angle when a kind of table tennis flies over net |
| CN107694062B (en) * | 2017-11-03 | 2020-09-04 | 杭州乾博科技有限公司 | System and method for judging whether table tennis touches net before flying through net |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090701 |