CN211292960U - Calibration device for PIV measurement system with accurate measurement - Google Patents
Calibration device for PIV measurement system with accurate measurement Download PDFInfo
- Publication number
- CN211292960U CN211292960U CN202020055404.1U CN202020055404U CN211292960U CN 211292960 U CN211292960 U CN 211292960U CN 202020055404 U CN202020055404 U CN 202020055404U CN 211292960 U CN211292960 U CN 211292960U
- Authority
- CN
- China
- Prior art keywords
- gear
- support frame
- rack
- pole
- ruler
- 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.)
- Active
Links
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model discloses a calibration device of a PIV measuring system with accurate measurement, which belongs to the field of PIV measurement, and the technical proposal is characterized in that the calibration device comprises a base, a support frame is fixedly connected on the base, the support frame is vertically arranged, the top end of the support frame is rotationally connected with a first gear, a calibration ruler is arranged on the first gear, a fixed rod is arranged on one side of the calibration ruler, which faces away from the calibration ruler, one end of the fixed rod is fixedly connected with the first gear, a second gear is arranged at the first gear, the second gear is rotationally connected with the support frame, the second gear is meshed with the first gear, the diameter of the first gear is larger than five times of the second gear, a placing table is fixedly arranged on the support frame, a rack is arranged on the placing table in a sliding way, the rack is meshed with the second gear, a scale mark is arranged on the placing table along the sliding direction of the, the utility model discloses the inclination of ruler is markd in accurate regulation, makes to adjust controllable, and the piece light is markd accurately.
Description
Technical Field
The utility model belongs to the technical field of the technique that the PIV was measured and specifically relates to a measure accurate PIV measurement system's calibration device is related to.
Background
PIV, also known as particle image velocimetry, is a transient, multipoint and contactless hydromechanical velocimetry method developed in the late seventies. The basic principle is that some tracing particles with good tracking performance and reflection performance and the specific gravity equivalent to that of fluid are scattered in a flow field, a natural light or laser sheet light source is used for irradiating a measured flow field area to form an illumination plane, a CCD (charge coupled device) and other camera equipment are used for acquiring a moving image of the tracing ions, the time interval between two adjacent frame image sequences is recorded, then two shot continuous images are mutually analyzed, the displacement of the tracing particle image is identified, and the velocity field of the fluid is obtained. Compared with other single-point speed measurement technologies, the PIV technology has high precision and high spatial resolution of the single-point speed measurement technology, realizes non-contact transient measurement of a full flow field, and is widely applied to various fields of machinery, metallurgy, chemical engineering, automobiles, aviation, hydrology, medicine and the like related to flow field measurement at present.
The typical PIV system mainly comprises an illumination system, an imaging system, an image processing system and the like, wherein the illumination system mainly comprises a continuous or pulse laser, an optical path system, a sheet light source optical lens group and the like, the imaging system comprises a digital camera, a signal synchronizer and the like, the image processing system mainly comprises analysis software and a workstation, the analysis software is used for analyzing images or videos obtained by the imaging system, displaying sampled image data, calculating and displaying a speed vector field and the like, and the workstation provides powerful operation resources for image processing and flow field calculation. Before PIV measurement, the PIV measurement is required to be accurately calibrated, so that the PIV measurement is more accurate.
Chinese patent with publication number CN110108903A discloses a PIV sheet light calibration device, which comprises a base and a support frame, wherein the support frame extends vertically, and the lower end of the support frame is fixedly connected or pivotally connected with the base; the calibration ruler is arranged at the top end of the support frame, and when the lower end of the support frame is fixedly connected with the base, the calibration ruler can be pivotally arranged at the upper end of the support frame; when the lower end of the support frame is pivotally connected with the base, the calibration ruler is fixed on the support frame along the extension direction of the support frame.
The above prior art solutions have the following drawbacks: although the inclination angle position of the calibrated ruler can be adjusted, so that accurate calibration of the sheet light is realized, in the actual use process, the adjustment of the calibrated ruler mainly achieves the effect of adjusting the inclination angle by directly rotating the calibrated ruler through people, fine difference adjustment is not easy to control, and the effect of accurate calibration of the sheet light is not ideal.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, one of the purposes of the utility model is to provide a can the accurate inclination of demarcating the ruler of adjusting, make to adjust controllable, the accurate PIV measurement system's of measurement calibration device is demarcated to the piece light.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides a measure accurate PIV measurement system's calibration device, includes the base, be equipped with the support frame on the base, the vertical setting of support frame, the top of support frame is rotated and is connected with the first gear that the level set up, be equipped with on the first gear top side and mark the ruler, mark and be equipped with the dead lever on ruler orientation first gear one side, the dead lever is markd ruler one end and first gear fixed connection dorsad, first gear below is equipped with the second gear that the level set up, the second gear rotates with the support frame to be connected, second gear and first gear engagement, the diameter of first gear is greater than more than the quintude of second gear, it places the platform to set firmly on the support frame, it is provided with the rack to place the bench slip, rack and second gear engagement, it is equipped with the scale mark along rack slip direction to place the bench.
Through adopting the above technical scheme, before carrying out the PIV measurement, mark it, in the calibration, change the angle of demarcation ruler, thereby can adapt to the demarcation under the different inclination, when the inclination of demarcation ruler needs to be changed, the pulling rack, make the rack slide along the scale mark direction on placing the platform, thereby the rack slides and drives the second gear revolve, thereby the second gear revolve drives first gear revolve, thereby first gear revolve drives and marks ruler rotation, thereby adjust the inclination of demarcation ruler, it is controllable to adjust, can be accurate adjust the angle of demarcation ruler, thereby make and mark the accuracy, improve subsequent PIV measuring accuracy.
The present invention may be further configured in a preferred embodiment as: first chucking hole has been seted up on the rack, place the bench and seted up a plurality of second chucking holes along rack length direction, it is a plurality of second chucking hole align to grid sets up, first chucking hole department is equipped with the chucking screw rod of vertical setting, the chucking screw rod is gone into first chucking hole and second chucking hole in proper order.
Through adopting above-mentioned technical scheme, when adjusting the inclination position demarcating the ruler, take down the chucking screw rod, make the chucking screw rod break away from first chucking hole and second chucking hole, thereby make the rack can adjust the inclination position of demarcating the ruler on placing the platform, when adjusting to demarcate the experiment, pass first chucking hole and second chucking hole with the chucking screw rod in proper order, the change of the relative position of restriction rack and placing the platform, fix the rack, avoid at the in-process of demarcation, the rack removes the effect that influences the demarcation.
The present invention may be further configured in a preferred embodiment as: the placing table is provided with a sliding groove, the sliding groove is arranged along the sliding direction of the rack, the rack is provided with a sliding block towards one side of the sliding groove, the sliding block is arranged in the sliding groove in a sliding mode, and the sliding block is abutted to the inner wall of the sliding groove.
Through adopting above-mentioned technical scheme, the setting of sliding tray and sliding block can play spacing effect to the rack, avoids the spur rack to squint at gliding in-process.
The present invention may be further configured in a preferred embodiment as: the rack is fixedly connected with a positioning rod, the positioning rod is perpendicular to the rack and is located above the scale marks.
Through adopting above-mentioned technical scheme, the setting of locating lever can carry out accurate location to the sliding position of rack to make the further accuracy of displacement distance of rack through scale mark and locating lever, thereby make the inclination change of maring the ruler more accurate, improve the accurate effect of demarcation.
The present invention may be further configured in a preferred embodiment as: the fixed rod is detachably connected with the calibration ruler.
Through adopting above-mentioned technical scheme, when maring that the ruler goes wrong and need change, need not to change whole device, directly will mark the ruler and dismantle from the dead lever, change.
The present invention may be further configured in a preferred embodiment as: be equipped with the telescopic link between support frame and the base, the telescopic link includes first pole and the second pole of vertical setting, the bottom and the base of first pole rotate to be connected, set up the shifting chute that extends along first pole length direction on the top of first pole, the bottom threaded connection of second pole is in the shifting chute, the top and the support frame fixed connection of second pole.
Through adopting above-mentioned technical scheme, the height of ruler can be markd in effectual regulation to the setting of telescopic link to the requirement of experiment is markd in the adaptation, when the height of ruler is markd in needs change, the staff grasps the second pole, avoids the second pole to rotate, rotates first pole simultaneously, thereby because threaded connection between second pole and the first pole rotates first pole and drives the second pole and remove along vertical direction, thereby the height of ruler is markd in the regulation.
The present invention may be further configured in a preferred embodiment as: the utility model discloses a support frame, including base, support frame, guide bar, support frame and support frame, the guide bar of the vertical setting of fixedly connected with on the base, the top of guide bar passes support frame and support frame sliding connection, the guide bar is contradicted with the support frame.
Through adopting above-mentioned technical scheme, the support frame circumferential direction can be avoided in the setting of guide bar to avoid the second pole at the in-process that rotates first pole, rotate along with first pole, need not artifical restriction second pole and rotate.
The present invention may be further configured in a preferred embodiment as: and a rotating handle is arranged on the outer side wall of the first rod.
Through adopting above-mentioned technical scheme, the setting of rotating the handle can conveniently rotate first pole.
To sum up, the utility model discloses a following at least one useful technological effect:
1. through the arrangement of the first gear, the second gear and the rack, the effects of accurately adjusting the inclination angle of the calibrated ruler, controlling the adjustment and accurately calibrating the sheet light can be achieved;
2. through the setting of telescopic link, can play the effect of adjusting the height of demarcation ruler.
Drawings
FIG. 1 is a schematic view of the overall structure of a calibration device in an embodiment;
FIG. 2 is an enlarged schematic view of the embodiment for embodying the portion A in FIG. 1;
fig. 3 is a sectional view of the embodiment for embodying the internal structure of the telescopic rod.
In the figure, 1, a base; 2. a support frame; 3. a first gear; 4. a second gear; 5. calibrating a ruler; 6. fixing the rod; 7. a rack; 8. a placing table; 9. scale lines; 10. positioning a rod; 11. a first clamping hole; 12. a second clamping hole; 13. clamping the screw rod; 14. a sliding groove; 15. a slider; 16. a telescopic rod; 161. a first lever; 162. a second lever; 17. a moving groove; 18. a guide bar; 19. the handle is rotated.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): refer to fig. 1, for the utility model discloses a measure accurate PIV measurement system's calibration device, including base 1, be equipped with the telescopic link 16 of vertical setting on the base 1, the welding has support frame 2 on the top of telescopic link 16, rotate through the bearing on the top of support frame 2 and be connected with first gear 3 that the level set up, the top side of first gear 3 is equipped with marks ruler 5, mark ruler 5 and can dismantle through the bolt and be connected with dead lever 6 on 3 one side of first gear, 5 one end of ruler and 3 outer wall welding of first gear are markd dorsad to dead lever 6, thereby 3 rotations of first gear can drive and mark ruler 5 and rotate, thereby adjust the inclination of demarcation ruler 5.
Referring to fig. 1 and 2, a second gear 4 horizontally arranged is arranged below the first gear 3, the second gear 4 is rotatably connected with the support frame 2 through a bearing, the second gear 4 is meshed with the first gear 3, the diameter of the first gear 3 is larger than five times of the diameter of the second gear 4, a placing table 8 is arranged below the second gear 4, the placing table 8 is welded with the support frame 2, a rack 7 is slidably arranged on the placing table 8, the rack 7 is meshed with the second gear 4, when the inclination angle of the calibration ruler 5 needs to be adjusted, the rack 7 is pulled, the rack 7 drives the second gear 4 to rotate, the second gear 4 rotates to drive the first gear 3 to rotate, and the first gear 3 rotates to drive the calibration ruler 5 to rotate to change the inclination angle.
Referring to fig. 2, a positioning rod 10 is welded on the side wall of the rack 7, the positioning rod 10 is perpendicular to the rack 7, scale marks 9 are arranged on the placing table 8, the scale marks 9 are arranged along the sliding direction of the rack 7, the positioning rod 10 is located above the scale marks 9, and the positioning rod 10 and the scale marks 9 can effectively control the moving distance of the rack 7, so that the inclination angle adjustment of the calibration ruler 5 is controllable.
Referring to fig. 2, first chucking hole 11 has been seted up on the rack 7, place and seted up a plurality of second chucking holes 12 along rack 7 length direction on the platform 8, a plurality of second chucking holes 12 align to grid set up, first chucking hole 11 department is equipped with the chucking screw 13 of vertical setting, chucking screw 13 blocks first chucking hole 11 and second chucking hole 12 into in proper order, the change of placing platform 8 and rack 7 relative position is restricted, fix rack 7, avoid at the in-process of demarcation, rack 7 removes the influence and marks.
Referring to fig. 2, place and seted up sliding tray 14 on the platform 8, sliding tray 14 sets up along rack 7 slip direction, rack 7 is equipped with sliding block 15 towards sliding tray 14 one side, sliding block 15 slides and sets up in sliding tray 14, sliding block 15 contradicts with sliding tray 14 inner wall, in the in-process that rack 7 removed, sliding block 15 slides in sliding tray 14, thereby make rack 7 only remove along sliding tray 14 direction, thereby avoid rack 7 skew to appear at gliding in-process, make chucking screw 13 bad card fix in first chucking hole 11 and the second chucking hole 12.
Referring to fig. 1 and 3, telescopic link 16 includes first pole 161 and the second pole 162 of vertical setting, the bottom and the base 1 of first pole 161 are rotated and are connected, be equipped with on the lateral wall of first pole 161 and rotate handle 19, set up the shifting chute 17 that extends along first pole 161 length direction on the top of first pole 161, the bottom threaded connection of second pole 162 is in shifting chute 17, the top and the support frame 2 welding of second pole 162, the welding has the guide bar 18 of vertical setting on the base 1, support frame 2 and support frame 2 sliding connection are passed on the top of guide bar 18, guide bar 18 contradicts with support frame 2, in the calibration, rotate first pole 161 through rotating handle 19, thereby can make second pole 162 remove along vertical direction, thereby change the height of calibrating ruler 5.
The implementation principle of the embodiment is as follows: when changing the inclination of maring ruler 5, pulling rack 7, make sliding block 15 on the rack 7 slide in sliding tray 14, thereby rack 7 slides and drives second gear 4 and rotate, thereby second gear 4 rotates and drives first gear 3 and rotate, thereby first gear 3 rotates and drives and marks ruler 5 and rotate, thereby adjust the inclination of maring ruler 5, adjust the back, go into first chucking hole 11 and second chucking hole 12 with chucking screw 13 card, fix rack 7.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a measure accurate PIV measurement system's calibration device, includes base (1), be equipped with support frame (2) on base (1), the vertical setting of support frame (2), its characterized in that: the top end of the support frame (2) is rotatably connected with a first gear (3) which is horizontally arranged, a calibration ruler (5) is arranged on the top side of the first gear (3), a fixing rod (6) is arranged on one side of the calibration ruler (5) facing the first gear (3), one end of the calibration ruler (5) is back to the fixing rod (6) and is fixedly connected with the first gear (3), a second gear (4) which is horizontally arranged is arranged below the first gear (3), the second gear (4) is rotatably connected with the support frame (2), the second gear (4) is meshed with the first gear (3), the diameter of the first gear (3) is larger than five times of the second gear (4), a placing table (8) is fixedly arranged on the support frame (2), a rack (7) is arranged on the placing table (8) in a sliding manner, and the rack (7) is meshed with the second gear (4), and scale marks (9) are arranged on the placing table (8) along the sliding direction of the rack (7).
2. The calibration device of the PIV measurement system for accurate measurement according to claim 1, wherein: first chucking hole (11) have been seted up on rack (7), place on platform (8) along rack (7) length direction seted up a plurality of second chucking holes (12), it is a plurality of second chucking hole (12) align to grid sets up, first chucking hole (11) department is equipped with chucking screw rod (13) of vertical setting, first chucking hole (11) and second chucking hole (12) are gone into in proper order to chucking screw rod (13).
3. The calibration device of the PIV measurement system for accurate measurement according to claim 1, wherein: the placing table (8) is provided with a sliding groove (14), the sliding groove (14) is arranged along the sliding direction of the rack (7), the rack (7) is provided with a sliding block (15) towards one side of the sliding groove (14), the sliding block (15) is arranged in the sliding groove (14) in a sliding mode, and the sliding block (15) is abutted to the inner wall of the sliding groove (14).
4. The calibration device of the PIV measurement system for accurate measurement according to claim 1, wherein: the rack (7) is fixedly connected with a positioning rod (10), the positioning rod (10) is perpendicular to the rack (7), and the positioning rod (10) is located above the scale marks (9).
5. The calibration device of the PIV measurement system for accurate measurement according to claim 1, wherein: the fixing rod (6) is detachably connected with the calibration ruler (5).
6. The calibration device of the PIV measurement system for accurate measurement according to claim 1, wherein: be equipped with telescopic link (16) between support frame (2) and base (1), telescopic link (16) are including first pole (161) and second pole (162) of vertical setting, the bottom and base (1) of first pole (161) are rotated and are connected, set up on the top of first pole (161) along moving slot (17) that first pole (161) length direction extends, the bottom threaded connection of second pole (162) is in moving slot (17), the top and support frame (2) fixed connection of second pole (162).
7. The calibration device of the PIV measurement system for accurate measurement according to claim 1, wherein: the utility model discloses a support frame, including base (1), the vertical guide bar (18) that sets up of fixedly connected with on base (1), the top of guide bar (18) is passed support frame (2) and support frame (2) sliding connection, guide bar (18) are contradicted with support frame (2).
8. The calibration device of the PIV measurement system for accurate measurement according to claim 6, wherein: and a rotating handle (19) is arranged on the outer side wall of the first rod (161).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020055404.1U CN211292960U (en) | 2020-01-10 | 2020-01-10 | Calibration device for PIV measurement system with accurate measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020055404.1U CN211292960U (en) | 2020-01-10 | 2020-01-10 | Calibration device for PIV measurement system with accurate measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211292960U true CN211292960U (en) | 2020-08-18 |
Family
ID=72012428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020055404.1U Active CN211292960U (en) | 2020-01-10 | 2020-01-10 | Calibration device for PIV measurement system with accurate measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211292960U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358901A (en) * | 2021-06-01 | 2021-09-07 | 中国船舶工业集团公司第七0八研究所 | Be used for suspension type PIV to mark three-dimensional support adjustment mechanism |
-
2020
- 2020-01-10 CN CN202020055404.1U patent/CN211292960U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358901A (en) * | 2021-06-01 | 2021-09-07 | 中国船舶工业集团公司第七0八研究所 | Be used for suspension type PIV to mark three-dimensional support adjustment mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101216706B1 (en) | Towed Particle Image Velocimetry System | |
| EP1657524B1 (en) | Method and apparatus for the 3D measurement of dental models and a slidable plate for the same | |
| CN101458072A (en) | Three-dimensional contour outline measuring set based on multi sensors and measuring method thereof | |
| CN103575239B (en) | Light beam parallelism pick-up unit and method | |
| CN106524934A (en) | High-precision small modulus gear vision measurement method | |
| CN209606056U (en) | PIV measuring device for three-dimension monitor aquatic object flow field and behavior | |
| CN109596073A (en) | A kind of origin position scaling method of the revolving platform central axis of view-based access control model measurement | |
| CN105203304B (en) | Magnifying power method surveys the optical bench of focal length | |
| CN105066903B (en) | A kind of 3-d laser measurement system and its measuring method | |
| CN106289086B (en) | A kind of double camera measurement method for apart from Accurate Calibration between optical indicia point | |
| CN211292960U (en) | Calibration device for PIV measurement system with accurate measurement | |
| CN109751964A (en) | A kind of contactless Calibration method and device of high-precision | |
| CN107525945A (en) | 3D 3C particle image speed-measuring systems and method based on integration imaging technology | |
| CN206339207U (en) | A kind of path accuracy repetition measurement instrument | |
| CN107462741A (en) | A kind of moving object speed and acceleration measurement device | |
| CN109238157A (en) | Turntable radius and the indexable increment of coordinate detection method of setting-up eccentricity four and detection device | |
| CN110207666A (en) | The vision pose measuring method and device of analog satellite on a kind of air floating platform | |
| CN113504388A (en) | Rotor wake flow SPIV measurement synchronous movement measuring mechanism and phase-locked measuring method | |
| CN208671913U (en) | One kind being based on tessellated transmission case end face large scale geometric tolerance detection device | |
| CN110274749A (en) | Cyclone interior flow field measurement method and system based on 2 dimension PIV | |
| CN205718957U (en) | A kind of object dimensional data acquisition unit based on image | |
| CN108759676A (en) | Based on tessellated transmission case end face large scale geometric tolerance detection device and method | |
| CN104034266B (en) | Surface microstructure based high-accuracy length detection method | |
| CN106959378B (en) | Single width motion blur image speed calculation method | |
| CN105091778A (en) | Profiled guide rail one-side characteristic detection method and apparatus based on laser ray structured light |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 215000 151 Huashan Road, hi tech Zone, Suzhou, Jiangsu Patentee after: Suzhou Deweierka Photoelectric Technology Co.,Ltd. Address before: 215000 Four Blocks, 66 Wangmi Street, Suzhou High-tech Zone, Jiangsu Province Patentee before: Suzhou Deweierka Photoelectric Technology Co.,Ltd. |