CN110108319B - Table tennis specification detection device - Google Patents
Table tennis specification detection device Download PDFInfo
- Publication number
- CN110108319B CN110108319B CN201910353295.3A CN201910353295A CN110108319B CN 110108319 B CN110108319 B CN 110108319B CN 201910353295 A CN201910353295 A CN 201910353295A CN 110108319 B CN110108319 B CN 110108319B
- Authority
- CN
- China
- Prior art keywords
- table tennis
- detection module
- slide rail
- fixed
- image acquisition
- 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.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a table tennis specification detection device, belonging to the field of sports equipment; the table tennis ball specification detection device integrates main detection items of table tennis balls, and is convenient and quick in detection mode; the technical scheme is as follows: table tennis specification detection device includes: the device comprises a quality detection module, a diameter and sphere center degree detection module and a bounciness detection module; a diameter and sphericity detection module is fixed below one side of the quality detection module, and a bounce detection module is fixed below the diameter and sphericity detection module; diameter and sphericity detection module includes: the image acquisition module, a slide rail, a control center and a movable support, wherein the slide rail is obliquely arranged from top to bottom, the movable support capable of sliding relative to the slide rail is arranged above the slide rail, a baffle is fixed on the movable support, the image acquisition module is arranged on the movable support, the center of a lens of the image acquisition module is downward, the control center is fixed on the movable support, and the control center is used for controlling the running speed of the movable support.
Description
Technical Field
The invention discloses a table tennis specification detection device, and belongs to the field of sports equipment.
Background
The table tennis rules are specifically defined as follows: the table tennis ball is a sphere with a diameter of 40mm and a weight of 2.7 grams, and the playing surface can be made of any material and should have consistent elasticity, i.e., when a standard ball falls from a height of 30cm above the playing surface to the playing surface, the bounce height should be about 23 cm. At present, balls and ball tables used in international games and domestic games at all levels are specially designated for game events, detection of ball specifications for table tennis games before the games is in a blank state, and particularly training balls adopted in basic training processes of table tennis clubs do not have necessary detection links. The traditional detection method is a manual experience method by means of a non-special tool, and although the method seems feasible, the method is too much in time consumption, complicated in steps and low in accuracy, and meanwhile, the method is lack of sufficient scientificity and rigor.
At present, devices for detecting the quality or specification of table tennis mainly detect the quality, diameter, bounce, eccentricity and the like of the table tennis, but detection equipment is various and complex, the detection speed is slow, various detection integration of the table tennis cannot be realized, vernier calipers are still adopted for detecting the diameter and the center of the table tennis, and the detection of data errors, particularly the center of the table tennis is difficult.
Disclosure of Invention
In view of this, the invention provides a table tennis specification detection device which integrates main table tennis detection items and has a convenient and fast detection mode.
In order to achieve the technical purpose, the technical scheme provided by the invention is as follows:
table tennis specification detection device includes: the device comprises a quality detection module, a diameter and sphere center degree detection module and a bounciness detection module; a diameter and sphericity detection module is fixed below one side of the quality detection module, and a bounce detection module is fixed below the diameter and sphericity detection module;
the diameter and sphericity detection module comprises: image acquisition module, slide rail, control center and movable support, the slide rail from top to bottom inclines to set up, distance 26 ~ 30mm between two track inboards of slide rail, the distance is not more than 38mm between two track outsides, but the slide rail top is provided with the movable support that the relative slide rail slided, be fixed with the baffle on the movable support, the baffle prevents that the table tennis from surpassing the movable support on the slide rail, be provided with image acquisition module on the movable support, and image acquisition module's camera lens center is downward, control center is fixed in on the movable support, control center is used for controlling movable support functioning speed.
The slide rail horizontal direction is S-shaped or the slide rail is helical structure.
The image acquisition module is used for acquiring CCD images.
The table tennis specification detection device further comprises a PC server, the PC server is connected with the image acquisition module through a USB interface, corresponding processing software is arranged in the PC server, and the PC server is used for processing and analyzing data uploaded by the image acquisition module.
The control center includes: the system comprises a singlechip, a stepping motor, an isolation power supply module, a rotating frame and a touch screen; the single chip microcomputer is electrically connected with the stepping motor and the touch screen respectively, the stepping motor is fixed on the rotating frame, the rotating frame comprises a support, pulleys and a spring, the support is arranged above the sliding rail, at least two pulleys are arranged on two sides of the support respectively, the pulleys are tightly attached to the outer sides of two rails of the sliding rail, a pulley middle shaft in the pulleys is fixedly connected with an output shaft of the stepping motor, and the isolation power supply module provides power for the whole diameter and sphere center degree detection module.
The pulley is characterized in that a plurality of sliding grooves are formed in the support, sliding blocks capable of moving relatively are arranged in the sliding grooves, compression springs are arranged between the sliding grooves and the sliding blocks, the middle shaft of the pulley is connected with the sliding blocks, and the pulley can rotate relative to the sliding blocks.
The quality detection module is an electronic scale.
The bounciness detection module comprises: a hard board surface and a collecting groove; the improved sliding rail structure is characterized in that the hard plate surface is horizontally fixed to the position 30cm below the outlet of the sliding rail, a collecting groove is fixed to the hard plate surface, the collecting groove comprises a lower baffle which is vertically fixed and an upper baffle which is fixed to the upper portion of the lower baffle, a gap of 5-6 cm is formed between the lower baffle and the upper baffle, and the height of the lower baffle is 23 cm.
The electronic scale is characterized in that a groove for placing table tennis balls is formed in the upper end face of the electronic scale, and the slide rail inlet is fixed on one side of the upper end face of the electronic scale.
The collecting tank further comprises a table tennis ball collecting container, the table tennis ball collecting container is arranged behind the lower baffle plate and the upper baffle plate, a plurality of small grooves are arranged in the table tennis ball collecting container, and the small grooves are arranged in parallel and are perpendicular to a gap between the lower baffle plate and the upper baffle plate.
Compared with the prior art, the invention has the following beneficial effects:
the method adopts a diameter and ball center detection module, collects ball images of the table tennis to be detected when the table tennis runs on a slide rail through an image acquisition module, processes image data through a PC (personal computer) server, analyzes the diameter and the ball center of the table tennis to be detected, and has the advantages of high detection speed and high detection quality; in addition, the horizontal direction of the slide rail is S-shaped or the slide rail is of a spiral structure and is used for rolling the table tennis horizontally and forwards and backwards, the image acquisition module can conveniently acquire images of the table tennis through a plurality of angles, and the detection precision of the ball center degree can be improved.
After the table tennis balls slide off from the slide rail outlet, the bounce height of the table tennis balls after the hard board surface collides is used for detecting the bounce standard of the table tennis balls, and meanwhile, the detected table tennis balls can be quickly collected; in addition, the eccentricity of the table tennis ball and the surface quality distribution of the table tennis ball can be preliminarily detected through the small grooves.
And the control center is provided with the rotating frame, so that the device can conveniently run on a curved track, and can stably run at the same time, and the information acquisition quality of the image acquisition module can be prevented from being influenced by vibration.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic structural diagram of a diameter and spherical center detecting module according to the present invention;
FIG. 4 is a schematic view of the mobile carriage of the present invention;
FIG. 5 is a schematic view of the table tennis ball and the mobile bracket of the present invention in operation;
FIG. 6 is a schematic diagram of the circuit structure of the present invention;
FIG. 7 is an enlarged view of A in FIG. 4 according to the present invention;
in the figure: the device comprises a quality detection module 1, a diameter and sphere center degree detection module 2, a bouncing detection module 3, an image acquisition module 21, a sliding rail 22, a control center 23, a movable support 24, a baffle 25, a stepping motor 26, an isolation power module 27, a rotating frame 28, a touch screen 29, a single chip microcomputer 210, a hard board 31 and a collecting tank 32.
Detailed Description
For a further understanding of the invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings and examples:
as shown in fig. 1 to 7: table tennis specification detection device includes: the device comprises a quality detection module 1, a diameter and sphere center degree detection module 2 and a bounciness detection module 3; a diameter and sphericity detection module 2 is fixed below one side of the quality detection module 1, and a bounce detection module 3 is fixed below the diameter and sphericity detection module 2;
the diameter and spherical center degree detection module 2 includes: image acquisition module 21, slide rail 22, control center 23 and movable support 24, slide rail 22 slopes to set up from top to bottom, distance 26 ~ 30mm between two track inboards of slide rail 22, the distance is not more than 38mm between two track outsides, and slide rail 22 top is provided with the sliding movable support 24 that can slide relative to slide rail 22, be fixed with baffle 25 on the movable support 24, baffle 25 prevents that the table tennis from surpassing movable support 24 on slide rail 22, be provided with image acquisition module 21 on the movable support 24, and the lens center of image acquisition module 21 is downward, control center 23 is fixed in on the movable support 24, control center 23 is used for controlling movable support 24 functioning speed.
The slide rail 22 is S-shaped in the horizontal direction or the slide rail 22 is a spiral structure.
The image acquisition module 21 is used for acquiring a CCD image.
The table tennis specification detection device further comprises a PC server, the PC server is connected with the image acquisition module 21 through a USB interface, corresponding processing software is arranged in the PC server, and the PC server is used for processing and analyzing data uploaded by the image acquisition module 21.
The control center 23 includes: the system comprises a singlechip 210, a stepping motor 26, an isolation power supply module 27, a rotating frame 28 and a touch screen 29; the single chip microcomputer 210 is electrically connected with the stepping motor 26 and the touch screen 29 respectively, the stepping motor 26 is fixed on the rotating frame 28, the rotating frame 28 comprises a support, pulleys and a spring, the support is arranged above the sliding rail 22, at least two pulleys are arranged on two sides of the support respectively, the pulleys are tightly attached to the outer sides of two rails of the sliding rail 22, a pulley middle shaft in the pulleys is fixedly connected with an output shaft of the stepping motor 26, and the isolation power supply module 27 provides power for the whole diameter and sphere center degree detection module 2.
The pulley is characterized in that a plurality of sliding grooves are formed in the support, sliding blocks capable of moving relatively are arranged in the sliding grooves, compression springs are arranged between the sliding grooves and the sliding blocks, the middle shaft of the pulley is connected with the sliding blocks, and the pulley can rotate relative to the sliding blocks.
The quality detection module 1 is an electronic scale.
The bounce detection module 3 includes: a hard plate surface 31 and a collection groove 32; hard face 31 level is fixed in slide rail 22 export below 30cm, be fixed with collecting vat 32 on the hard face 31, collecting vat 32 includes vertical fixed lower plate washer and is fixed in the last plate washer of lower plate washer top, be provided with 5 ~ 6 cm's clearance between lower plate washer and the last plate washer, the plate washer height is 23cm down.
The upper end face of the electronic scale is provided with a groove for placing table tennis balls, and the inlet of the slide rail 22 is fixed on one side of the upper end face of the electronic scale.
The collecting tank 32 further includes a table tennis ball collecting container, the table tennis ball collecting container is disposed behind the lower baffle plate and the upper baffle plate, a plurality of small grooves are disposed in the table tennis ball collecting container, and the small grooves are disposed in parallel and perpendicular to a gap between the lower baffle plate and the upper baffle plate.
The operation process of the invention is as follows:
the measured table tennis is placed in the groove of the electronic scale, and the groove can stabilize the table tennis, so that the influence of shaking on data accuracy is prevented; after the quality of the measured table tennis is detected, the measured table tennis slowly slides down from the slide rail 22, and the control center 23 synchronously slides down, so that the baffle 25 can limit the speed of the measured table tennis when the measured table tennis is too fast.
The angle of the slide rail 22 from top to bottom is constant, and the lens of the image acquisition module 21 is always kept vertically downward, so that the image acquisition precision of the table tennis ball to be detected is improved.
When the table tennis ball to be detected slides out of the outlet end of the slide rail 22, the outlet end of the slide rail 22 must be kept horizontal, namely the table tennis ball to be detected is at the initial velocity of an object in the vertical direction, the table tennis ball bounces after falling on the hard plate surface 31, and the table tennis ball reaching the standard enters the collecting tank 32 under the combined action of the initial velocity of the object and the bouncing height; in addition, when the measured table tennis surface quality is not uniformly distributed, the measured table tennis surface quality is deflected to the left and the right after sliding out from the outlet end of the slide rail 22, and then the small groove is combined, so that the table tennis eccentricity can be detected.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (7)
1. Table tennis specification detection device, its characterized in that: the method comprises the following steps: the system comprises a quality detection module (1), a diameter and sphere center degree detection module (2), a bounce detection module (3) and a PC server; a diameter and sphericity detection module (2) is fixed below one side of the quality detection module (1), and a bounciness detection module (3) is fixed below the diameter and sphericity detection module (2);
the diameter and spherical center degree detection module (2) comprises: an image acquisition module (21), a slide rail (22), a control center (23) and a movable bracket (24), the slide rail (22) is obliquely arranged from top to bottom, the distance between the inner sides of the two rails of the slide rail (22) is 26-30 mm, the distance between the outer sides of the two rails is not more than 38mm, a movable bracket (24) which can slide relative to the sliding rail (22) is arranged above the sliding rail (22), a baffle plate (25) is fixed on the movable bracket (24), the baffle plate (25) prevents the table tennis from exceeding the movable bracket (24) on the slide rail (22), the mobile bracket (24) is provided with an image acquisition module (21), the image acquisition module (21) is connected with a PC server through a USB interface, the PC server is internally provided with corresponding processing software and is used for processing and analyzing data uploaded by the image acquisition module (21); the lens center of the image acquisition module (21) is downward, the control center (23) is fixed on the movable support (24), and the control center (23) is used for controlling the running speed of the movable support (24);
the control center (23) comprises: the device comprises a singlechip (210), a stepping motor (26), an isolation power supply module (27), a rotating frame (28) and a touch screen (29); the single chip microcomputer (210) is electrically connected with the stepping motor (26) and the touch screen (29) respectively, the stepping motor (26) is fixed on the rotating frame (28), the rotating frame (28) comprises a support, pulleys and a spring, the support is arranged above the sliding rail (22), at least two pulleys are arranged on two sides of the support respectively, the pulleys are tightly attached to the outer sides of two rails of the sliding rail (22), a pulley middle shaft in the pulleys is fixedly connected with an output shaft of the stepping motor (26), and the isolation power supply module (27) provides electric power for the whole diameter and sphere center degree detection module (2).
2. The table tennis ball specification detecting device according to claim 1, wherein: the slide rail (22) is S-shaped in the horizontal direction or the slide rail (22) is of a spiral structure.
3. The table tennis specification detecting apparatus according to claim 1 or 2, wherein: the image acquisition module (21) is used for CCD image acquisition.
4. The table tennis ball specification detecting device according to claim 1, wherein: the pulley is characterized in that a plurality of sliding grooves are formed in the support, sliding blocks capable of moving relatively are arranged in the sliding grooves, compression springs are arranged between the sliding grooves and the sliding blocks, the middle shaft of the pulley is connected with the sliding blocks, and the pulley can rotate relative to the sliding blocks.
5. The table tennis specification detecting apparatus according to claim 1 or 2, wherein: the quality detection module (1) is an electronic scale.
6. The table tennis ball specification detecting device according to claim 1, wherein: the bounciness detection module (3) comprises: a hard plate surface (31) and a collecting groove (32); stereoplasm face (31) level is fixed in slide rail (22) export below 30cm, be fixed with collecting vat (32) on stereoplasm face (31), collecting vat (32) are including vertical fixed lower plate washer and be fixed in the last plate washer of lower plate washer top, be provided with 5 ~ 6 cm's clearance down between plate washer and the last plate washer, the plate washer height is 23cm down.
7. The table tennis ball specification detecting device according to claim 5, wherein: the electronic scale is characterized in that a groove for placing table tennis balls is formed in the upper end face of the electronic scale, and an inlet of the sliding rail (22) is fixed on one side of the upper end face of the electronic scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910353295.3A CN110108319B (en) | 2019-04-29 | 2019-04-29 | Table tennis specification detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910353295.3A CN110108319B (en) | 2019-04-29 | 2019-04-29 | Table tennis specification detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110108319A CN110108319A (en) | 2019-08-09 |
| CN110108319B true CN110108319B (en) | 2021-04-02 |
Family
ID=67487409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910353295.3A Expired - Fee Related CN110108319B (en) | 2019-04-29 | 2019-04-29 | Table tennis specification detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110108319B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115585851B (en) * | 2022-12-13 | 2023-04-14 | 华南理工大学 | Table tennis specification detection device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1395391A1 (en) * | 1986-07-07 | 1988-05-15 | Предприятие П/Я М-5143 | Apparatus for sorting tennis balls |
| CN103615983B (en) * | 2013-11-27 | 2016-08-17 | 天津大学 | Air-flotation type table tennis diameter based on machine vision and eccentric detection method |
| CN104748798B (en) * | 2015-04-15 | 2017-10-03 | 山东师范大学 | Table tennis specification detecting instrument |
| CN205460820U (en) * | 2016-04-01 | 2016-08-17 | 昆山精研杰自动化科技有限公司 | Table tennis table bounce tester |
| CN106345704B (en) * | 2016-09-23 | 2018-09-18 | 天津大学 | A kind of seamless table tennis anti-pumping performance detection sorting unit |
| CN107583875B (en) * | 2017-09-28 | 2023-04-18 | 天津大学 | Table tennis bounce performance detection device |
-
2019
- 2019-04-29 CN CN201910353295.3A patent/CN110108319B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN110108319A (en) | 2019-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110108319B (en) | Table tennis specification detection device | |
| CN106345704B (en) | A kind of seamless table tennis anti-pumping performance detection sorting unit | |
| CN107583875A (en) | A kind of table tennis anti-pumping performance detection means | |
| CN105372163A (en) | Apparatus and method for testing spray atomization performance | |
| CN204745573U (en) | Portable basketball stands | |
| CN205055373U (en) | Multi -functional basketball machine | |
| CN100365411C (en) | Detection method suited on surface of spherical fruit triggered to collect images based on need and equipment | |
| CN206535141U (en) | Altitude touch evaluation system is looked as far as one's eyes can see suitable for basketball and volleyball training | |
| CN206593584U (en) | A kind of crane girder web Local warping degree detection means | |
| CN207494053U (en) | A kind of table tennis anti-pumping performance detection device | |
| CN111256613B (en) | Roundness tester and roundness testing method | |
| CN103486940B (en) | Tennis specification checkout gear | |
| CN207779814U (en) | Coal-pressing ball instrument for testing compressive strength | |
| CN109157822B (en) | Portable table tennis service robot | |
| CN216777870U (en) | A throw trainer for shot | |
| CN109173227A (en) | A kind of miniature range unit of trampoline and the method for calculating distance realization interaction | |
| CN220609038U (en) | Table tennis training device with scoring structure | |
| CN215066235U (en) | PCB quality inspection tool | |
| CN105944360B (en) | A kind of Intelligent golf exercise system and its application method | |
| CN206248484U (en) | A kind of steel ball drop test device | |
| CN208091666U (en) | Roller drop test equipment | |
| CN203519288U (en) | Infrared-based tennis ball elasticity testing device | |
| CN208458966U (en) | A kind of simple type bead plane angular impact recovery coefficient experimental provision | |
| CN207964551U (en) | A kind of football water absorption test machine | |
| CN216222874U (en) | Intelligence sports long-jump measuring equipment |
Legal Events
| 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210402 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |