CN112683188A - Full-automatic video extensometer - Google Patents
Full-automatic video extensometer Download PDFInfo
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- CN112683188A CN112683188A CN202011382372.7A CN202011382372A CN112683188A CN 112683188 A CN112683188 A CN 112683188A CN 202011382372 A CN202011382372 A CN 202011382372A CN 112683188 A CN112683188 A CN 112683188A
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- video extensometer
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- 230000007704 transition Effects 0.000 claims description 24
- 239000011521 glass Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000003703 image analysis method Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention discloses a full-automatic video extensometer, which comprises: the video extensometer main body assembly comprises an outer cover, image acquisition equipment and a focal length adjusting unit, wherein the image acquisition equipment is connected with the focal length adjusting unit and is arranged in the outer cover, and the focal length adjusting unit is used for automatically adjusting the focal length of the image acquisition equipment; the video extensometer light source component comprises a shell, a light source and a light source adjusting unit, wherein the light source is connected with the light source adjusting unit and is arranged in the shell, and the light source adjusting unit is used for automatically adjusting the angle of the light source; and the connecting component is used for connecting the video extensometer main body component and the video extensometer light source component. The focal length of the image acquisition equipment is automatically adjusted through the focal length adjusting unit, the angle of the light source is automatically adjusted through the light source adjusting unit, the full-automatic adjustment of the focal length and the light source angle of the full-automatic video extensometer can be realized, and the full-automatic video extensometer has the advantages of simplicity in operation, compact structure, light equipment and the like.
Description
Technical Field
The invention relates to the technical field of marker line positioning devices, in particular to a full-automatic video extensometer.
Background
With the development of the processing and manufacturing industry, the performance requirements of materials are improved, and correspondingly, the detection means of the material performance is more and more advanced. At present, the extensometer commonly used in the testing machine industry is a traditional mechanical strain extensometer, is inconvenient in the using process, and some materials have no obvious yield point, so that the time when a sample is broken cannot be judged in the testing process, the common strain extensometer is used for contact measurement, the test result is influenced too early after being taken down, and the extensometer is damaged too late after being taken down, so that unnecessary loss is caused. Still another class of materials, such as thin plates, foils, and films, cannot be used with contact extensometers because the weight, clamping manner, etc. of the contact extensometers can have a significant effect on the test results of the materials, and even damage the test samples. In addition, when the mechanical contact type knife edge extensometer measures the deformation of a material in the stretching process, the friction between a knife edge and a measured piece can generate relative movement (slippage), and the accuracy of a measuring result is influenced.
The non-contact video extensometer is produced on the basis of continuous development and perfection of photoelectric devices, photoelectric measurement technology and image processing technology. The method utilizes an image analysis method to track the motion state of the sub-area of the image on the surface of the object and calculate the displacement and the strain of the deformation of the object, and has the advantages of non-contact property, high precision, simple light path and small influence by the environment. However, in some aspects, it is desirable to have a extensometer that clearly captures the surface of the sample to ensure that the marker points on the surface of the sample are captured during the assay.
At present, the extensometer can be clearly captured by manually adjusting a focusing knob on the industrial camera, but the manual adjustment is very inconvenient under some special working conditions, such as high altitude. Secondly, the core of the extensometer for measuring the strain is the light intensity contrast between the sample and the mark, the larger the contrast is, the better the tracking effect of the extensometer is, and the great difficulty is brought to the manufacture of different marks due to the diversity of the sample materials and colors.
Disclosure of Invention
The invention mainly solves the technical problems in the prior art, and provides the full-automatic video extensometer which is simple in focal length and light source angle adjustment, compact in structure and portable in equipment.
The technical problem of the invention is mainly solved by the following technical scheme:
the invention provides a full-automatic video extensometer, which comprises:
the video extensometer main body assembly comprises an outer cover, image acquisition equipment and a focal length adjusting unit, wherein the image acquisition equipment is connected with the focal length adjusting unit and is arranged in the outer cover, and the focal length adjusting unit is used for automatically adjusting the focal length of the image acquisition equipment;
the video extensometer light source component comprises a shell, a light source and a light source adjusting unit, wherein the light source is connected with the light source adjusting unit and is arranged in the shell, and the light source adjusting unit is used for automatically adjusting the angle of the light source;
and the connecting assembly is used for connecting the video extensometer main body assembly and the video extensometer light source assembly.
Furthermore, the focal length adjusting unit comprises a zooming driven gear wheel, a zooming transition gear, a zooming driving gear, a micro direct current motor, a mounting plate, a transition gear shaft and a gear mounting bracket;
the zoom driven wheel is arranged on a focal length adjusting knob on a lens of the image acquisition equipment, and can drive the focal length adjusting knob to rotate to adjust the focal length, wherein the zoom driven wheel is matched with the zoom transition gear;
the zoom transition gear is arranged on the transition gear shaft, the transition gear shaft is arranged on the gear mounting bracket, and the gear mounting bracket is arranged on the mounting plate; the zooming transition gear is matched with the zooming driving gear;
the zooming driving gear is installed on the micro-motion direct current motor, and the micro-motion direct current motor is installed on the gear installation support.
Further, the dustcoat is including the left side dustcoat, front panel and the right side cover that connect gradually, be provided with on the front panel the glass board.
Furthermore, the number of the light source adjusting units is multiple, each light source adjusting unit corresponds to one light source, and the light source adjusting units are arranged in the shell in parallel or in reverse.
Further, the light source adjusting unit comprises a rotating shaft, a locking screw, a rotating driven gear, a rotating driving gear, a U-shaped bracket, a rotating bearing and a direct current motor;
the lower part of the rotating shaft is provided with the rotary driven gear, and the middle part of the rotating shaft is connected with the light source through the locking screw; the upper end and the lower end of the rotating shaft are respectively connected with the upper part of the shell and the U-shaped bracket through rotating bearings, and the U-shaped bracket is fixed at the bottom of the shell;
the rotary driving gear is matched with the rotary driven gear, the rotary driving gear is installed on the direct current motor, and the direct current motor is installed on the U-shaped support.
Further, the shell comprises a side panel and a U-shaped cover, the U-shaped cover is arranged at the bottom of the side panel, and the U-shaped cover is connected with the U-shaped bracket.
Further, the connecting component is a connecting screw.
The invention has the beneficial effects that: through focus adjusting element automatically regulated image acquisition equipment's focus, and through light source adjusting element automatically regulated the angle of light source, it can realize the full automatically regulated of the focus of full-automatic video extensometer and light source angle, and it has advantages such as easy operation, compact structure, equipment are light.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a fully automatic video extensometer of the present invention;
FIG. 2 is a schematic view of another angle configuration of the fully automatic video extensometer of the present invention;
FIG. 3 is a schematic structural view of a video extensometer body assembly of the fully automatic video extensometer of the present invention;
FIG. 4 is a schematic view of the configuration of the video extensor light source assembly of the fully automatic video extensor of the present invention;
fig. 5 is a cross-sectional view taken along line a-a of fig. 4.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
Referring to fig. 1-5, the fully automatic video extensometer of the present invention includes:
the video extensometer main body component 1 comprises an outer cover, an image acquisition device 105 and a focal length adjusting unit, wherein the image acquisition device 105 is connected with the focal length adjusting unit and is arranged in the outer cover, and the focal length adjusting unit is used for automatically adjusting the focal length of the image acquisition device 105;
the video extensometer light source component 2 comprises a shell, a light source 203 and a light source adjusting unit, wherein the light source 203 is connected with the light source adjusting unit and is arranged in the shell, and the light source adjusting unit is used for automatically adjusting the angle of the light source 203;
and the connecting assembly 3 is used for connecting the video extensometer main body assembly 1 and the video extensometer light source assembly 2.
According to the invention, the focal length of the image acquisition equipment 105 is automatically adjusted through the focal length adjusting unit, and the angle of the light source 203 is automatically adjusted through the light source adjusting unit, so that the full-automatic adjustment of the focal length and the light source angle of the full-automatic video extensometer can be realized, and the full-automatic video extensometer has the advantages of simple operation, compact structure, light equipment and the like.
Specifically, the focal length adjusting unit of the present invention includes a zoom driven gear 104, a zoom transition gear 106, a zoom driving gear 107, a micro dc motor 108, a mounting plate 109, a transition gear shaft 110, and a gear mounting bracket 111;
the zoom driven wheel 104 is mounted on a focal length adjusting knob on the lens of the image acquisition device 105, and the zoom driven wheel 104 can drive the focal length adjusting knob to rotate to adjust the focal length, wherein the zoom driven wheel 104 is matched with the zoom transition gear 106;
the zoom transition gear 106 is mounted on the transition gear shaft 110, the transition gear shaft 110 is mounted on the gear mounting bracket 111, and the gear mounting bracket 111 is mounted on the mounting plate 109; wherein, the zoom transition gear 106 is matched with the zoom driving gear 107;
the zoom driving gear 107 is mounted on the micro dc motor 108, and the micro dc motor 108 is mounted on the gear mounting bracket 111.
In the present invention, the automatic zooming principle of the image capturing device 105 is: an output shaft of the micro-motion direct current motor 108 rotates to drive the zooming driving gear 107 to rotate, the zooming driving gear 107 rotates to drive the zooming transition gear 106 meshed with the zooming driving gear to rotate, the zooming transition gear 106 rotates to drive the zooming driven wheel 104 meshed with the zooming transition gear, and the zooming driven wheel 104 drives the focusing knob on the image acquisition equipment 105 to rotate, so that zooming operation is achieved.
In an embodiment of the present invention, the housing includes a left housing 101, a front panel 102, and a right housing 112 connected in sequence, and the glass plate 103 is disposed on the front panel 102. The glass plate 103 is provided to facilitate the operator to observe the operation of the focus adjusting unit in the housing from the outside.
In an embodiment of the invention, when aiming at a plurality of light sources, the number of the light source adjusting units is multiple, each light source adjusting unit corresponds to one light source, and the light source adjusting units are arranged in parallel or in reverse in the shell. In another embodiment of the present invention, the number of the light sources and the light source adjusting units may be one.
In the present invention, the light source adjusting unit includes a rotation shaft 205, a locking screw 206, a rotation driven gear 207, a rotation driving gear 208, a U-shaped bracket 209, a rotation bearing 210 and a dc motor 211;
the rotary driven gear 207 is installed at the lower part of the rotary shaft 205, and the middle part of the rotary shaft 205 is connected with the light source 203 through the locking screw 206; the upper end and the lower end of the rotating shaft 205 are respectively connected with the upper part of the shell and a U-shaped bracket 209 through a rotating bearing 210, and the U-shaped bracket 209 is fixed at the bottom of the shell;
the rotation driving gear 208 is engaged with the rotation driven gear 207, the rotation driving gear 208 is installed on the dc motor 211, and the dc motor 211 is installed on the U-shaped bracket 209.
In the present invention, the principle of the angle change of the light source 203 is as follows: an output shaft of the dc motor 211 rotates to drive the rotation driving gear 208 to rotate, the rotation driving gear 208 drives the rotation driven gear 207 engaged with the rotation driving gear 208 to rotate, and the rotation driven gear 207 drives the rotation shaft 205 to rotate, thereby realizing the angle adjustment of the light source 203.
In one embodiment of the present invention, the housing comprises a side panel 202 and a U-shaped cover 204, the U-shaped cover 204 is disposed at the bottom of the side panel 202, and the U-shaped cover 204 is connected to the U-shaped bracket 209.
Preferably, the connecting assembly 3 is a connecting screw. In other embodiments of the invention, the connecting member 3 may also be a rivet, a connecting flange, or the like.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (7)
1. A fully automatic video extensometer, characterized by comprising:
the video extensometer main body assembly (1) comprises an outer cover (10), image acquisition equipment (105) and a focal length adjusting unit, wherein the image acquisition equipment (105) is connected with the focal length adjusting unit and is arranged in the outer cover (10), and the focal length adjusting unit is used for automatically adjusting the focal length of the image acquisition equipment (105);
the video extensometer light source component (2) comprises a shell, a light source (203) and a light source adjusting unit, wherein the light source (203) is connected with the light source adjusting unit and is arranged in the shell, and the light source adjusting unit is used for automatically adjusting the angle of the light source (203);
and the connecting assembly (3) is used for connecting the video extensometer main body assembly (1) and the video extensometer light source assembly (2).
2. The fully automatic video extensometer of claim 1 wherein the focus adjustment unit includes a zoom driven gear wheel (104), a zoom transition gear (106), a zoom driving gear (107), a micro dc motor (108), a mounting plate (109), a transition gear shaft (110), a gear mounting bracket (111);
the zoom driven wheel (104) is arranged on a focal length adjusting knob on a lens of the image acquisition equipment (105), and the zoom driven wheel (104) can drive the focal length adjusting knob to rotate to adjust the focal length, wherein the zoom driven wheel (104) is matched with the zoom transition gear (106);
the zoom transition gear (106) is mounted on the transition gear shaft (110), the transition gear shaft (110) is mounted on the gear mounting bracket (111), and the gear mounting bracket (111) is mounted on the mounting plate (109); wherein the zoom transition gear (106) is matched with the zoom driving gear (107);
the zoom driving gear (107) is mounted on the micro-motion direct current motor (108), and the micro-motion direct current motor (108) is mounted on the gear mounting bracket (111).
3. The fully automatic video extensometer according to claim 2, characterized in that the housing (10) comprises a left housing (101), a front panel (102) and a right housing (112) connected in sequence, the front panel (102) being provided with the glass plate (103).
4. The fully automatic video extensometer of claim 1 wherein there are a plurality of light source adjusting units, each light source adjusting unit corresponding to a light source, and a plurality of light source adjusting units are arranged side by side or in reverse within the housing.
5. The fully automatic video extensometer of claim 4 wherein the light source adjustment unit includes a rotating shaft (205), a locking screw (206), a rotary driven gear (207), a rotary driving gear (208), a U-shaped bracket (209), a rotary bearing (210) and a DC motor (211);
the lower part of the rotating shaft (205) is provided with the rotary driven gear (207), and the middle part of the rotating shaft (205) is connected with the light source (203) through the locking screw (206); the upper end and the lower end of the rotating shaft (205) are respectively connected with the upper part of the shell and a U-shaped bracket (209) through a rotating bearing (210), and the U-shaped bracket (209) is fixed at the bottom of the shell;
the rotary driving gear (208) is matched with the rotary driven gear (207), the rotary driving gear (208) is installed on the direct current motor (211), and the direct current motor (211) is installed on the U-shaped support (209).
6. The fully automatic video extensometer of claim 5 wherein the housing includes a side panel (202) and a U-shaped cover (204), the U-shaped cover (204) is disposed at the bottom of the side panel (202), and the U-shaped cover (204) is connected with the U-shaped bracket (209).
7. The fully automatic video extensometer according to claim 1, characterized in that the connection assembly (3) is a connection screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011382372.7A CN112683188B (en) | 2020-12-01 | 2020-12-01 | Full-automatic video extensometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011382372.7A CN112683188B (en) | 2020-12-01 | 2020-12-01 | Full-automatic video extensometer |
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| Publication Number | Publication Date |
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| CN112683188A true CN112683188A (en) | 2021-04-20 |
| CN112683188B CN112683188B (en) | 2023-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011382372.7A Active CN112683188B (en) | 2020-12-01 | 2020-12-01 | Full-automatic video extensometer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115014228A (en) * | 2022-06-21 | 2022-09-06 | 深圳市海塞姆科技有限公司 | Embedded extensometer based on vision measurement and double-shaft vision measurement method |
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| CN105510125A (en) * | 2016-01-12 | 2016-04-20 | 济南大学 | Video extensometer and marker line positioning method based on video extensometer |
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-
2020
- 2020-12-01 CN CN202011382372.7A patent/CN112683188B/en active Active
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| CN209085554U (en) * | 2018-12-18 | 2019-07-09 | 深圳万测试验设备有限公司 | A kind of transverse direction Video Extensometer |
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Non-Patent Citations (1)
| Title |
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| 葛云燕等: "视频引伸计", 《工程与试验》, pages 24 - 26 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115014228A (en) * | 2022-06-21 | 2022-09-06 | 深圳市海塞姆科技有限公司 | Embedded extensometer based on vision measurement and double-shaft vision measurement method |
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Denomination of invention: A fully automatic video extensometer Granted publication date: 20231229 Pledgee: Jiangsu Bank Co.,Ltd. Shanghai Huinan Branch Pledgor: Shanghai Hualong Test Instruments Co.,Ltd. Registration number: Y2024980005630 |