CN212721298U - Large-scale pipeline size deviation in-place monitoring device based on multi-view stereoscopic vision - Google Patents
Large-scale pipeline size deviation in-place monitoring device based on multi-view stereoscopic vision Download PDFInfo
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- CN212721298U CN212721298U CN202021943096.2U CN202021943096U CN212721298U CN 212721298 U CN212721298 U CN 212721298U CN 202021943096 U CN202021943096 U CN 202021943096U CN 212721298 U CN212721298 U CN 212721298U
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Abstract
The utility model provides a large-scale pipeline size deviation is monitoring devices on throne based on many meshes stereovision, including base, lead screw, guide bar, mobile station, motor, altitude mixture control mechanism, backup pad, a plurality of telescopic link, ring, a plurality of CCD camera, with the laser instrument of quantity such as CCD camera and wait to detect the pipeline, the horizontal pin joint of lead screw is on the base, the guide bar transversely sets up on the base, the mobile station screw thread cup joints on the lead screw and slides the adaptation with the guide bar, the motor sets up on the base and links to each other with the lead screw, altitude mixture control mechanism sets up on the mobile station. Compared with the prior art, the multi-view vision not only avoids the problem of convergence of a non-linear equation in the single-view vision and the problem of depth information loss, but also effectively reduces the ambiguity of image feature matching in the binocular vision and enlarges the effective measurement range. In addition, the multi-view vision measurement is a redundant technology, so that the measurement system is safer and more reliable, and the measurement precision is higher.
Description
Technical Field
The utility model relates to a pipeline size monitoring technology field specifically is a large-scale pipeline size deviation monitoring devices on throne based on many meshes stereovision.
Background
At present, the size deviation detection methods of pipeline parts and shaft parts can be divided into three major types, namely mechanical methods, optical methods and other methods. The mechanical methods mainly include a large outside micrometer method, an inside micrometer method, a pi micrometer method, a chord height method, a roller method, a caliper method, and the like. The principle is simple, the detection cost is low, data are read mainly by human eyes, the repeatability of a plurality of measurement results is poor, and the measuring tool is easy to deform due to temperature and mechanical reasons and introduces measurement errors, so the detection precision is relatively low. In addition, the measuring tool is heavy when measuring the large-diameter part, so the operation is labor-consuming and time-consuming, and the requirement of in-place measurement cannot be met.
The visual detection technology is an emerging detection technology established on the basis of computer vision research, the computer vision research result is utilized to focus on researching the geometric dimension of an object and the three-dimensional measurement technology of the object in the space pose, the prior case of using a single visual sensor to carry out visual detection on a workpiece exists in the market at present, but in the process of carrying out visual detection on a large-size workpiece, due to the fact that the range of a view field is limited, the single visual sensor cannot cover the whole workpiece, partial information is lost, and therefore detection on the large-size workpiece cannot be achieved.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Not enough to prior art, the utility model provides a large-scale pipeline size deviation is monitoring devices on throne based on many meshes stereovision has solved the problem of proposing among the above-mentioned background art.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a large pipeline size deviation on-site monitoring device based on multi-view stereoscopic vision comprises a base, a lead screw, a guide rod, a moving platform, a motor, a height adjusting mechanism, a supporting plate, a plurality of telescopic rods, a ring, a plurality of CCD cameras, a plurality of lasers in the same number as the CCD cameras and a pipeline to be detected, wherein the lead screw is transversely pivoted on the base, the guide rod is transversely arranged on the base, the moving platform is sleeved on the lead screw in a threaded manner and is in sliding fit with the guide rod, the motor is arranged on the base and is connected with the lead screw, the height adjusting mechanism is arranged on the moving platform, the supporting plate is arranged on the height adjusting mechanism, the height adjusting mechanism can drive the supporting plate to lift, the plurality of telescopic rods are transversely arranged on the side part of the supporting plate, the ring is arranged on the side part of the telescopic rod far away from the supporting plate, the plurality of CCD cameras and the plurality of lasers are arranged on, the CCD cameras and the lasers are alternately arranged and correspond to the outer ring of the pipeline.
Preferably, the telescopic rod comprises a sleeve and a connecting rod, one end of the sleeve is fixedly connected to the supporting plate, the connecting rod transversely slides and is telescopically matched with the sleeve, and one end, far away from the sleeve, of the connecting rod is connected with the circular ring.
Preferably, the connecting rod is provided with a plurality of positioning holes at equal intervals along the length direction of the connecting rod, and the sleeve is in threaded connection with fixing bolts corresponding to the positioning holes.
Preferably, the support plate is transversely provided with a laser alignment instrument, and the laser alignment instrument corresponds to the axis of the pipeline.
Preferably, the height adjusting mechanism comprises a screw rod and a slide rod, the screw rod is vertically pivoted on the mobile station, the slide rod is vertically arranged on the mobile station, the screw rod vertically penetrates through the support plate and is in threaded connection with the support plate, the slide rod vertically penetrates through the support plate and is in sliding connection with the support plate, and a rocking wheel is arranged at the top end of the screw rod.
Preferably, the number of the CCD cameras and the number of the lasers are four.
(III) advantageous effects
The utility model provides a large-scale pipeline size deviation monitoring devices on throne based on many meshes stereovision. The method has the following beneficial effects:
1. according to the large pipeline size deviation in-place monitoring device based on the multi-view stereo vision, a plurality of (not less than 3) high-precision CCD cameras are arranged on the outer ring of a pipeline to be measured, the positions of the CCD cameras are fixed in the measuring process, the cameras are reasonably arranged according to the size of the pipeline to be measured, the focal distance of the cameras, the view field and the like, and 2 or 3 cameras form a group. And a plurality of lasers form a characteristic point projection system, and a circle of high-precision laser dots are projected on the outer surface of the measured pipeline to be used as the characteristic points of the section circle of the measured piece. And finally, data splicing is realized by converting the coordinate of a plurality of grouped measurement results, and the three-dimensional reconstruction and the size deviation measurement of the section circle of the measured pipeline are completed. In addition, the multi-view vision measurement is a redundant technology, so that the measurement system is safer and more reliable, and the measurement precision is higher.
Drawings
Fig. 1 is an isometric view of the present invention;
FIG. 2 is a schematic view of the height adjustment mechanism of the present invention;
fig. 3 is a schematic view of the monitoring system of the present invention.
In the figure: the device comprises a base 1, a lead screw 2, a guide rod 3, a moving platform 4, a motor 5, a supporting plate 6, a screw 7, a sliding rod 8, a sleeve 9, a connecting rod 10, a positioning hole 11, a fixing bolt 12, a circular ring 13, a CCD camera 14, a laser 15, a laser aligner 16 and a pipeline 17.
Detailed Description
The embodiment of the utility model provides a large-scale pipeline size deviation is monitoring devices on throne based on many meshes stereovision, as shown in fig. 1-3, including base 1, lead screw 2, guide bar 3, mobile station 4, motor 5, altitude mixture control mechanism, backup pad 6, a plurality of telescopic links, ring 13, a plurality of CCD camera 14, with the laser instrument 15 of quantity such as CCD camera 14 and wait to detect pipeline 17. The base 1 is mounted on a machining lathe of the pipeline 17 and transversely corresponds to the pipeline 17. Lead screw 2 transversely pin joint is on base 1, guide bar 3 transversely sets up on base 1, 4 screw sockets of mobile station are on lead screw 2 and with the adaptation that slides of guide bar 3, motor 5 sets up on base 1 and links to each other with lead screw 2, motor 5's drive drives 4 lateral shifting of mobile station, height adjusting mechanism sets up on mobile station 4, backup pad 6 sets up on height adjusting mechanism, and height adjusting mechanism can drive backup pad 6 and go up and down, adjust the height of backup pad 6 according to pipeline 17's diameter, make ring 13 be in pipeline 17's axis position.
Four telescopic links transversely set up the lateral part at backup pad 6, and the lateral part that backup pad 6 was kept away from at the telescopic link is set up to ring 13, and four telescopic links are around ring 13 center equiangular distribution. The number of CCD cameras 14 and lasers 15 is four. The four CCD cameras 14 and the four lasers 15 are arranged on the inner ring of the circular ring 13 and rotate around the center of the circular ring at equal angles, the CCD cameras 14 and the lasers 15 are alternately arranged, and the CCD cameras 14 and the lasers 15 correspond to the outer ring of the pipeline 17. The CCD camera 14 and the laser 15 are connected with a terminal server, and the CCD camera 14 transmits the monitored data to the terminal server.
A plurality of (≧ 3) high-precision CCD cameras 14 are arranged on the outer ring of the pipeline 17 to be measured, the position of the pipeline is fixed in the measuring process, the CCD cameras 14 are reasonably distributed according to the size of the pipeline 17 to be measured, the focal distance of the cameras, the field of view and the like, and 2 or 3 CCD cameras 14 form a group. The plurality of lasers 15 form a characteristic point projection system, and a circle of high-precision laser dots are projected on the outer surface of the measured pipeline 17 to be used as characteristic points of the section circle of the measured piece. And finally, data splicing is realized by converting the coordinate of a plurality of grouped measurement results, and the three-dimensional reconstruction and the size deviation measurement of the section circle of the measured pipeline 17 are completed. In addition, the multi-view vision measurement is a redundant technology, so that the measurement system is safer and more reliable, and the measurement precision is higher.
As shown in figure 1, the telescopic rod comprises a sleeve 9 and a connecting rod 10, one end of the sleeve 9 is fixedly connected to the supporting plate 6, the connecting rod 10 is transversely slidably and telescopically fitted on the sleeve 9, and one end of the connecting rod 10 far away from the sleeve 9 is connected with a circular ring 13. The telescopic rod is used for adjusting the transverse length of the circular ring 13, so that the circular ring can extend into the end part of the pipeline 17 for monitoring.
A plurality of positioning holes 11 are arranged on the connecting rod 10 at equal intervals along the length direction of the connecting rod, and fixing bolts 12 corresponding to the positioning holes 11 are connected to the sleeve 9 in a threaded manner. When the transverse length of the ring 13 is adjusted, the fixing bolt 12 is firstly screwed out, then the connecting rod 11 is pulled to a proper length, and then the fixing bolt 12 is screwed into the corresponding positioning hole 11.
A laser aligner 16 is transversely arranged on the support plate 6, and the laser aligner 16 corresponds to the axis of the pipe 17. The height of the ring 13 is adjusted by means of the laser aligner 16 and the adjustment is stopped when the laser aligner 16 is aligned with the central axis of the pipe 17 during the adjustment of the height of the ring 13.
As shown in fig. 2, the height adjusting mechanism includes a screw rod 7 and a slide rod 8, the screw rod 7 is vertically pivoted on the mobile station 4, the slide rod 8 is vertically arranged on the mobile station 4, the screw rod 7 vertically penetrates through the support plate 6 and is in threaded connection with the support plate, the slide rod 8 vertically penetrates through the support plate 6 and is in sliding connection with the support plate, and the top end of the screw rod 7 is provided with a rocking wheel. When the height adjusting mechanism is used specifically, the rocking wheel on the screw 7 is rotated to drive the supporting plate 6 to lift.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a large-scale pipeline size deviation is monitoring devices on throne based on many meshes stereovision which characterized in that: comprises a base (1), a lead screw (2), a guide rod (3), a mobile platform (4), a motor (5), a height adjusting mechanism, a support plate (6), a plurality of telescopic rods, a ring (13), a plurality of CCD cameras (14), lasers (15) in the same number with the CCD cameras (14) and a pipeline (17) to be detected, wherein the lead screw (2) is transversely pivoted on the base (1), the guide rod (3) is transversely arranged on the base (1), the mobile platform (4) is in threaded sleeve joint on the lead screw (2) and is in sliding fit with the guide rod (3), the motor (5) is arranged on the base (1) and is connected with the lead screw (2), the height adjusting mechanism is arranged on the mobile platform (4), the support plate (6) is arranged on the height adjusting mechanism, the height adjusting mechanism can drive the support plate (6) to lift, the plurality of telescopic rods are transversely arranged on the side part of the support plate (6), the ring (13) is arranged on the side portion, far away from the supporting plate (6), of the telescopic rod, the CCD cameras (14) and the lasers (15) are arranged on the inner ring of the ring (13) and rotate around the center of the ring at equal angles, the CCD cameras (14) and the lasers (15) are alternately arranged, and the CCD cameras (14) and the lasers (15) correspond to the outer rings of the pipeline (17).
2. The large pipeline size deviation in-place monitoring device based on the multi-view stereo vision as claimed in claim 1, wherein: the telescopic rod comprises a sleeve (9) and a connecting rod (10), one end of the sleeve (9) is fixedly connected onto the supporting plate (6), the connecting rod (10) transversely slides and is telescopically matched onto the sleeve (9), and one end, far away from the sleeve (9), of the connecting rod (10) is connected with the circular ring (13).
3. The large pipeline size deviation in-place monitoring device based on the multi-view stereo vision as claimed in claim 2, wherein: a plurality of positioning holes (11) are formed in the connecting rod (10) at equal intervals along the length direction of the connecting rod, and fixing bolts (12) corresponding to the positioning holes (11) are connected to the sleeve (9) in a threaded mode.
4. The large pipeline size deviation in-place monitoring device based on the multi-view stereo vision as claimed in claim 1, wherein: the supporting plate (6) is transversely provided with a laser alignment instrument (16), and the laser alignment instrument (16) corresponds to the axis of the pipeline (17).
5. The large pipeline size deviation in-place monitoring device based on multi-view stereo vision as claimed in claim 4, wherein: the height adjusting mechanism comprises a screw rod (7) and a sliding rod (8), the screw rod (7) is vertically pivoted on the mobile platform (4), the sliding rod (8) is vertically arranged on the mobile platform (4), the screw rod (7) vertically penetrates through the supporting plate (6) and is in threaded connection with the supporting plate, the sliding rod (8) vertically penetrates through the supporting plate (6) and is in sliding connection with the supporting plate, and a rocking wheel is arranged at the top end of the screw rod (7).
6. The large pipeline size deviation in-place monitoring device based on the multi-view stereo vision as claimed in claim 1, wherein: the number of the CCD cameras (14) and the number of the lasers (15) are four.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021943096.2U CN212721298U (en) | 2020-09-08 | 2020-09-08 | Large-scale pipeline size deviation in-place monitoring device based on multi-view stereoscopic vision |
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| CN202021943096.2U CN212721298U (en) | 2020-09-08 | 2020-09-08 | Large-scale pipeline size deviation in-place monitoring device based on multi-view stereoscopic vision |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117816565A (en) * | 2024-03-04 | 2024-04-05 | 山东豪迈机械制造有限公司 | Heat exchange tube detects and letter sorting equipment |
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2020
- 2020-09-08 CN CN202021943096.2U patent/CN212721298U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117816565A (en) * | 2024-03-04 | 2024-04-05 | 山东豪迈机械制造有限公司 | Heat exchange tube detects and letter sorting equipment |
| CN117816565B (en) * | 2024-03-04 | 2024-05-28 | 山东豪迈机械制造有限公司 | Heat exchange tube detects and letter sorting equipment |
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Inventor after: Yuan Pengzhe Inventor after: Yu Xiao Inventor after: Zhang Qiyuan Inventor after: Zhang Lieshan Inventor before: Yuan Pengzhe Inventor before: Yu Xiao Inventor before: Zhang Qiyuan |
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