CN202376720U - Tennis line judging system - Google Patents
Tennis line judging system Download PDFInfo
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- CN202376720U CN202376720U CN2011205309865U CN201120530986U CN202376720U CN 202376720 U CN202376720 U CN 202376720U CN 2011205309865 U CN2011205309865 U CN 2011205309865U CN 201120530986 U CN201120530986 U CN 201120530986U CN 202376720 U CN202376720 U CN 202376720U
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- tennis
- nand gate
- rectifier
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Abstract
The utility model discloses a tennis line judging system, which comprises a first sensor and a second sensor, wherein the first sensor is sequentially connected with a first rectifier and a first filter, the second sensor is sequentially connected with a second rectifier, a second filter and an indicator lamp L2, the first filter and a first not-and gate input a signal to a second not-and gate, the second not-and gate is connected with a not gate, the not gate is connected with an indicator lamp L1, and the first not-and gate is connected with a control device. The sensors are respectively of a pressure sensor, and when a tennis ball falls on the ground, a pressure signal is collected by the sensor in a corresponding region and is transmitted to the corresponding indicator lamp through the rectifier and the filter so as to judge whether the tennis ball goes out of the bound or not. Compared with an eagle eye judging method, the real-time performance is strong, and the expense is low.
Description
Technical field
The utility model relates to a kind ofly can judge the whether system of out-of-bounds of tennis, is specifically related to a kind of sensor that utilizes and judges the whether system of out-of-bounds of tennis.
Background technology
Tennis has been come into people's life gradually as emerging sports events of modern times, also is no lack of various tennis tournaments in the world match.But even world match, the judgement of the sideline ball of tennis is the way with hawkeye always.Though the precision of hawkeye method is undoubted, obviously it has hysteresis quality, not only can influence the progress of match during the challenge hawkeye, and also can influence athletic psychological condition sometimes.
The utility model content
The purpose of the utility model is the deficiency to above-mentioned prior art, provides a kind of tennis sideline to judge system, can be in tennis tournament real-time judges whether out-of-bounds of tennis, and can distinguish single doubles.
The technical scheme of the utility model realizes in the following manner: system is judged in a kind of tennis sideline; Comprise the first sensor and second sensor; First sensor links to each other with first rectifier, first wave filter successively, second sensor successively with second rectifier, second wave filter, indicator lamp L
2Link to each other, first wave filter and first NAND gate are to the second NAND gate input signal, and second NAND gate links to each other with not gate, and not gate closes indicator lamp L
1Link to each other, first NAND gate links to each other with control device.
Said first NAND gate and second NAND gate are the TTL NAND gates.
The used sensor of the utility model is a pressure sensor, and when tennis fell to the ground, the sensor acquisition of respective regions was transferred to corresponding indicator lamp through rectifier, wave filter etc. with signal to pressure signal, and then judges whether out-of-bounds of tennis.Compare with the hawkeye judgement, the real-time of the utility model is more intense, and expense is lower.
Description of drawings
Fig. 1 is the theory diagram of the utility model.
Fig. 2 is the tennis court distribution schematic diagram.
The specific embodiment
As shown in Figure 1, a kind of tennis sideline judges and system to comprise the first sensor and second sensor, and first sensor links to each other with first rectifier, first wave filter successively, second sensor successively with second rectifier, second wave filter, indicator lamp L
2Link to each other, first wave filter and first NAND gate are to the second NAND gate input signal, and second NAND gate links to each other with not gate, and not gate closes indicator lamp L
1Link to each other, first NAND gate links to each other with control device.
Said first NAND gate and second NAND gate are the TTL NAND gates.
In the utility model, first sensor is arranged on beyond the singles, doubles are regional with interior C, and second sensor is arranged on the D zone beyond the doubles.
In the utility model, setting high level is that logic state 1, low level are logic state 0, and in singles and doubles, the working method of the utility model is different:
During singles, control device makes A, B end have at least one to be logic state 0, at this moment the first NAND gate output logic state 1.When first sensor collected the tennis signal, first wave filter was exported then output logic state 0 of high level 1, the second NAND gate to second NAND gate, afterwards through not gate, to L
1Output logic signal 1, L
1Lamp is bright, shows singles' out-of-bounds; When first sensor collection during less than the tennis signal, L
1Lamp does not work.When second sensor acquisition when tennis lands signal, the second wave filter output logic state 1, indicator lamp L2 is bright, L1 does not work, and shows singles' out-of-bounds.
During doubles, A, B hold equal input logic state 1, at this moment L
1Lamp does not work always; After second sensor detects pressure signal, the second wave filter output logic signal 1, L
2Lamp is bright, shows the doubles out-of-bounds, and L
2Lamp does not work, and shows that then tennis in play.
When tennis the time, can judge with the naked eye that very easily sensor is provided with near the boundary line in the utility model, is mainly used in to judge whether tennis drops on the boundary line periphery away from the boundary line.
Claims (2)
1. system is judged in a tennis sideline, and it is characterized in that: comprise the first sensor and second sensor, first sensor links to each other with first rectifier, first wave filter successively, second sensor successively with second rectifier, second wave filter, indicator lamp L
2Link to each other, first wave filter and first NAND gate are to the second NAND gate input signal, and second NAND gate links to each other with not gate, and not gate closes indicator lamp L
1Link to each other, first NAND gate links to each other with control device.
2. system is judged in tennis according to claim 1 sideline, and it is characterized in that: said first NAND gate and second NAND gate are the TTL NAND gates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205309865U CN202376720U (en) | 2011-12-19 | 2011-12-19 | Tennis line judging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205309865U CN202376720U (en) | 2011-12-19 | 2011-12-19 | Tennis line judging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202376720U true CN202376720U (en) | 2012-08-15 |
Family
ID=46625242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205309865U Expired - Fee Related CN202376720U (en) | 2011-12-19 | 2011-12-19 | Tennis line judging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202376720U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888442A (en) * | 2015-06-10 | 2015-09-09 | 中国计量学院 | Tennis hitting point recording instrument |
| WO2017008215A1 (en) * | 2015-07-10 | 2017-01-19 | 张阳 | Tennis judging method and system |
| CN106492441A (en) * | 2016-12-09 | 2017-03-15 | 徐玉炜 | A kind of tennis border judgment means |
| CN110368660A (en) * | 2019-08-19 | 2019-10-25 | 郑州职业技术学院 | Sports tournament device for scoring and point system |
-
2011
- 2011-12-19 CN CN2011205309865U patent/CN202376720U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888442A (en) * | 2015-06-10 | 2015-09-09 | 中国计量学院 | Tennis hitting point recording instrument |
| CN104888442B (en) * | 2015-06-10 | 2017-10-03 | 中国计量学院 | Tennis ball hitting point recorder |
| WO2017008215A1 (en) * | 2015-07-10 | 2017-01-19 | 张阳 | Tennis judging method and system |
| CN106492441A (en) * | 2016-12-09 | 2017-03-15 | 徐玉炜 | A kind of tennis border judgment means |
| CN110368660A (en) * | 2019-08-19 | 2019-10-25 | 郑州职业技术学院 | Sports tournament device for scoring and point system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20121219 |