CN111840967A - Line ball detection method based on reversible pressure-sensitive color-changing adhesive - Google Patents
Line ball detection method based on reversible pressure-sensitive color-changing adhesive Download PDFInfo
- Publication number
- CN111840967A CN111840967A CN202010761600.5A CN202010761600A CN111840967A CN 111840967 A CN111840967 A CN 111840967A CN 202010761600 A CN202010761600 A CN 202010761600A CN 111840967 A CN111840967 A CN 111840967A
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- China
- Prior art keywords
- color
- sideline
- ball
- strips
- strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002441 reversible effect Effects 0.000 title claims abstract description 16
- 239000000853 adhesive Substances 0.000 title claims description 11
- 230000001070 adhesive effect Effects 0.000 title claims description 11
- 238000001514 detection method Methods 0.000 title abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 11
- 229920000642 polymer Polymers 0.000 claims description 4
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- -1 polydimethylsiloxane Polymers 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 9
- 239000003292 glue Substances 0.000 abstract description 4
- 239000000084 colloidal system Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
- A63B71/0605—Decision makers and devices using detection means facilitating arbitration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
A ball-pressing detection method based on reversible pressure-sensitive color-changing glue is characterized in that three strips are arranged in parallel on a court sideline to be monitored, wherein a strip II is arranged on the sideline and is superposed with the sideline; a strip III is arranged on the outer side of the sideline, and a strip I is arranged on the inner side of the sideline; under the condition of no load, the strip II is the color of the side line of the field, and the strips I and III in the areas on the two sides are the same as the original color of the field; under the loaded condition, the color change contrast of the color is high; in the match, the impact of the ball on the colloid material causes the color of the material to change in a subsequent period of time, so that the accurate identification of the ball drop point in the subsequent period of time is realized, the position relation between the ball and the sideline is visually judged in real time, and whether the ball is out of bounds is judged.
Description
Technical Field
The invention relates to the technical field of stress sensors, in particular to a method for detecting a ball-pressing based on reversible pressure-sensitive color-changing adhesive, which is a detection method for visually judging the ball-pressing by controlling a pressure-sensitive color-changing material and color-changing duration.
Background
The specialization degree of general sports, especially ball sports, is continuously improved, and the requirement on the judgment accuracy of referees in various games is more urgent. The risk of human error affecting the outcome is to be minimized in the referee's penalties. In fact, the time to strike the edge line at a horizontal velocity of one hundred miles per hour is approximately one-thousandth of a second, which is one hundred times faster than the time required for the human eye to blink. It is not practical for the athlete or observer to have to determine whether the ball is within the bounds between blinks. At this stage, in world top ball games, the eagle eye system is used to assist officials in their penalties, the speed of the ball is now measured and displayed to the audience in good time, and electronic sensors are used to help officials/patrollers determine whether tennis is in a prescribed area. Greatly reducing the misjudgment of the referee. However, the process of the "eagle eye system" requires a long time, resulting in interruption of the game. If the processing time is too long, the rhythm of the match is influenced and the watching is not facilitated. The current game therefore limits the use of the "eagle eye system" which cannot be used for every ball disputed. In addition, the eagle eye system has the problem of accuracy. The eagle eye is used as a computer-aided system, the accuracy of one hundred percent cannot be guaranteed, the error is generally controlled within three millimeters, and attention needs to be paid to that the system is optical imaging, and errors can occur in detection of balls with different colors and sizes; finally, the cost is high, and the popularization is not easy.
The detection of the blank pressing ball relates to an induction technology, abandons the complicated pressure-sensitive color changing technologies such as piezoelectric technology, liquid crystal technology and the like, and can realize the above pressure-sensitive color changing requirements by utilizing the property that a simple material changes color under the external stimulation. The adopted pressure-sensitive color-changing material (mechanochromatic/piezochromic material) is a functional material of which the optical properties (such as absorption, reflection, fluorescence, phosphorescence and the like) can be changed under the action of force. The material can be used as a pressure sensing device since the surface color change is visible to the naked eye. The color change principle is that the weak intermolecular force of the material is changed under the action of external force to change the color of the material. Specifically, if the dye polymer ball is embedded into silica gel with good elastic deformation capability, after being pulled, the lattice distance is increased, and the reflection wavelength of light is shifted to a shorter wavelength, so that the surface can be discolored. By adjusting the density and winding mode of the polymer material, the deformation recovery time after impact can be controlled, and further the pressure-sensitive discoloration duration time can be adjusted. After the deformation is completely recovered, the surface color is recovered. Until now, no report has been made on the application of the material to court sideline detection.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a method for detecting a ball by pressing a line based on a reversible pressure-sensitive color-changing adhesive, wherein three strips are arranged on the sideline and two sides of a court to be monitored, whether the ball is out of bounds can be clearly determined by color changing of the strips, and the method has the characteristics of low requirement on use environment, low cost, quick response and zero human error.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a ball-pressing detection method based on reversible pressure-sensitive color-changing glue is characterized in that three strips are arranged in parallel on a court sideline to be monitored, wherein a strip II is arranged on the sideline and is superposed with the sideline; the outer side of the sideline is provided with a strip III, and the inner side of the sideline is provided with a strip I.
And the three strips have the same color as the original color of the field, wherein the strip II is the color of the sideline of the field, and the strip I and the strip III in the areas on the two sides are the same as the original color of the field.
The three strips have high color change contrast under the loaded condition.
The three strips are fixed in a bonding or spraying mode.
The three strips are reversible pressure-sensitive color-changing glue, the material is polydimethylsiloxane polymer containing spiropyran components, and the original color can be recovered within 1-2 seconds after the three strips are pressed.
Compared with the prior art, the invention has the beneficial effects that: the invention only uses the reversible pressure-sensitive color-changing adhesive tape to visually judge the pressure-sensitive color-changing material and the color-changing duration control, and clearly determines whether the ball is out of bounds or not by the color change of the tape, and has the technical characteristics of low requirement on the use environment, low cost, quick response and zero human error.
Drawings
FIG. 1 is a top view of a three strap arrangement of an embodiment of the present invention.
Fig. 2 is a schematic diagram of four specific cases of the ball hitting the ground according to the embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1, a method for detecting a ball-pressing based on reversible pressure-sensitive color-changing adhesive, wherein three strips are arranged in parallel on a court sideline to be monitored, and a strip II is arranged on the sideline and is superposed with the sideline; the outer side of the sideline is provided with a strip III, and the inner side of the sideline is provided with a strip I.
And the three strips have the same color as the original color of the field, wherein the strip II is the color of the sideline of the field, and the strip I and the strip III in the areas on the two sides are the same as the original color of the field. In this example, the middle stripe, stripe ii, was white and the top and bottom stripes, stripe i and stripe iii, were field colors without loading. The distance between the strips can be determined according to actual use conditions.
The three strips have high color change contrast under the loaded condition.
The three strips are fixed in a bonding or spraying mode.
The three strips are reversible pressure-sensitive color-changing glue, the material is polydimethylsiloxane polymer containing spiropyran components, and the original color is recovered within 1-2 seconds after the pressure is applied.
The working principle of the invention is as follows:
with reference to fig. 2, the application of this technique will be further illustrated below by taking as an example four impact situations, in which, under load, a ball touches the white border, i.e. the band ii, and shows a different colour with a very high contrast to white (reference 3 in the figure); when the ball only contacts the strip I or the strip III (the marks 1 and 4 in the figure), the contact part of the strip I or the strip III is discolored, and the color of the contact part and the color of the non-contact part also have high contrast; if the bottom of the ball touches the interface (reference 2 in the figure), then both adjacent strips change color and the two parts have different colors with very high contrast.
The scope of the present invention is not limited to the technical means disclosed in the above embodiments, and includes similar technical means.
Claims (5)
1. A method for detecting a ball with pressing line based on reversible pressure-sensitive color-changing adhesive is characterized in that three strips are arranged in parallel on the sideline of a court to be monitored, wherein a strip II is arranged on the sideline and is superposed with the sideline; the outer side of the sideline is provided with a strip III, and the inner side of the sideline is provided with a strip I.
2. The method for detecting the pressed line ball based on the reversible pressure-sensitive color-changing adhesive as claimed in claim 1, wherein the three strips II have the color of the court border line under the unloaded condition, and the strips I and III in the two side areas have the same color as the original court border line.
3. The method for detecting the ball-in-wire based on the reversible pressure-sensitive color-changing adhesive as claimed in claim 1, wherein the three strips have high color-changing contrast of color under a loaded condition.
4. The method for detecting the ball-pressing force based on the reversible pressure-sensitive color-changing adhesive as claimed in claim 1, wherein the three strips are fixed by means of bonding or spraying.
5. The method for detecting the line ball based on the reversible pressure-sensitive color-changing adhesive according to claim 1, wherein the three bands are the reversible pressure-sensitive color-changing adhesive, the material is polydimethylsiloxane polymer containing a spiropyran component, and the original color can be recovered within 1-2 seconds after the three bands are pressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010761600.5A CN111840967A (en) | 2020-07-31 | 2020-07-31 | Line ball detection method based on reversible pressure-sensitive color-changing adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010761600.5A CN111840967A (en) | 2020-07-31 | 2020-07-31 | Line ball detection method based on reversible pressure-sensitive color-changing adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111840967A true CN111840967A (en) | 2020-10-30 |
Family
ID=72953936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010761600.5A Pending CN111840967A (en) | 2020-07-31 | 2020-07-31 | Line ball detection method based on reversible pressure-sensitive color-changing adhesive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111840967A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114307118A (en) * | 2022-01-11 | 2022-04-12 | 张春省 | Badminton match sideline drop point penalty device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2462996Y (en) * | 2001-02-15 | 2001-12-05 | 西北轻工业学院 | Detecting devioce for line ball in court |
| WO2006138607A2 (en) * | 2005-06-16 | 2006-12-28 | Brandt Richard A | Automated line calling system |
| WO2007124168A2 (en) * | 2006-04-21 | 2007-11-01 | Write Stuff Enterprises, Inc. | System for confirming hit locations on tennis court boundaries |
| CN106492441A (en) * | 2016-12-09 | 2017-03-15 | 徐玉炜 | A kind of tennis border judgment means |
| CN108671523A (en) * | 2018-05-08 | 2018-10-19 | 重庆文理学院 | A kind of boundary ball determination method and system for volleyball match |
| CN109112894A (en) * | 2018-09-10 | 2019-01-01 | 金华盛纸业（苏州工业园区）有限公司 | A kind of Anti-fake thermosensitive paper and preparation method thereof |
| CN109374165A (en) * | 2018-10-09 | 2019-02-22 | 东莞市亚马电子有限公司 | A kind of pressure detecting paper and preparation method thereof |
-
2020
- 2020-07-31 CN CN202010761600.5A patent/CN111840967A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2462996Y (en) * | 2001-02-15 | 2001-12-05 | 西北轻工业学院 | Detecting devioce for line ball in court |
| WO2006138607A2 (en) * | 2005-06-16 | 2006-12-28 | Brandt Richard A | Automated line calling system |
| WO2007124168A2 (en) * | 2006-04-21 | 2007-11-01 | Write Stuff Enterprises, Inc. | System for confirming hit locations on tennis court boundaries |
| CN106492441A (en) * | 2016-12-09 | 2017-03-15 | 徐玉炜 | A kind of tennis border judgment means |
| CN108671523A (en) * | 2018-05-08 | 2018-10-19 | 重庆文理学院 | A kind of boundary ball determination method and system for volleyball match |
| CN109112894A (en) * | 2018-09-10 | 2019-01-01 | 金华盛纸业（苏州工业园区）有限公司 | A kind of Anti-fake thermosensitive paper and preparation method thereof |
| CN109374165A (en) * | 2018-10-09 | 2019-02-22 | 东莞市亚马电子有限公司 | A kind of pressure detecting paper and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114307118A (en) * | 2022-01-11 | 2022-04-12 | 张春省 | Badminton match sideline drop point penalty device |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zuo Hong Inventor after: Guo Xudong Inventor after: Liu Qida Inventor before: Zuo Hong Inventor before: Liu Qida Inventor before: Guo Xudong |
|
| CB03 | Change of inventor or designer information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201030 |
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| RJ01 | Rejection of invention patent application after publication |