CN109655017A - A kind of pipeline the coaxial degree measurement - Google Patents
A kind of pipeline the coaxial degree measurement Download PDFInfo
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- CN109655017A CN109655017A CN201910136574.4A CN201910136574A CN109655017A CN 109655017 A CN109655017 A CN 109655017A CN 201910136574 A CN201910136574 A CN 201910136574A CN 109655017 A CN109655017 A CN 109655017A
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- laser
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
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- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
A kind of pipeline the coaxial degree measurement belongs to laser and applies and coaxality measurement technical field.The pipeline the coaxial degree measurement, including laser emitter, laser pickoff, PSD signal memory module, communication module and measurement process module, the end of tested pipeline is arranged in laser pickoff, input terminal of the laser transmitter projects light beam to laser pickoff, the output end of laser pickoff is connect with the input terminal of PSD signal memory module, PSD signal memory module collects and records the position coordinates of laser point on laser pickoff, the output end of PSD signal memory module and the input terminal of measurement process module connect, measurement process module carries out sphere surface fitting to the position coordinates of the laser point and obtains tested pipeline central coordinate of circle, and the deviation situation of the tested pipeline central coordinate of circle and benchmark central coordinate of circle.The pipeline the coaxial degree measurement can be realized contactless measurement, be able to carry out efficient, high-precision pipeline coaxality measurement.
Description
Technical field
The present invention relates to laser to apply and coaxality measurement technical field, in particular to a kind of pipeline coaxality measurement system
System.
Background technique
There is relatively broad purposes in the fields such as pipeline manufactures in precision instrument, Aeronautics and Astronautics and weapon, test.As steamed
Steam pipe road, gun barrel, gun barrel, parallel light tube, jet chimney etc., these pipelines are often used for exchanging thermal energy, conveying high-pressure stream
Body can also manufacture bracket, often will appear large error in processing or assembling process, and the pipeline concentricity in China is surveyed at present
What amount used substantially makes hand dipping, and measurement accuracy and the degree of automation are low, it is difficult to meet modern high-precision and height automation
It is required that and it is common directly utilize optical quarter meter measurement accuracy poor, and higher cost.
Summary of the invention
In order to solve the technical problems such as measurement accuracy of the existing technology is low, the degree of automation is low, higher cost, this hair
It is bright to provide a kind of pipeline the coaxial degree measurement, it can be realized contactless measurement, be able to carry out efficient, high-precision pipe
Road coaxality measurement.
To achieve the goals above, the technical scheme is that
A kind of pipeline the coaxial degree measurement, including laser emitter, laser pickoff, PSD signal memory module, communication
The end of tested pipeline, the laser transmitter projects light beam is arranged in module and measurement process module, the laser pickoff
Output end to the input terminal of laser pickoff, the laser pickoff is connect with the input terminal of PSD signal memory module, described
PSD signal memory module collects and records the position coordinates of laser point on laser pickoff, the output end of PSD signal memory module
It is connect with the input terminal of measurement process module, the measurement process module carries out sphere surface fitting to the position coordinates of the laser point
Obtain tested pipeline central coordinate of circle, and the deviation situation of the tested pipeline central coordinate of circle and benchmark central coordinate of circle.
The light beam of the laser transmitter projects and the end plane of tested pipeline are vertical.
The output end of the laser pickoff is connect with the input terminal of PSD signal memory module by communication module, described
The output end of PSD signal memory module and the input terminal of measurement process module are connected by communication module.
The communication module is serial communication.
The PSD signal memory module is equipped with display screen.
The laser pickoff uses PSD position sensor.
The measurement process module uses PC machine.
The application method of above-mentioned pipeline the coaxial degree measurement, comprising the following steps:
Step 1: the laser transmitter projects light beam, acts on light beam on the laser pickoff and obtains laser point
One, the position coordinates (x of the PSD signal memory module recording laser point one1, y1)；
Step 2: repeating step 1, obtaining the position coordinates (x of laser point two 3-5 ° of tested pipeline coaxial rotating2,
y2), successively by tested pipeline coaxial rotating one week, the PSD signal memory module records the position coordinates (x of all laser pointsi,
yi)；
Step 3: position coordinates (the x for all laser points that PSD signal memory module is recordedi, yi) set z coordinate as 0,
Obtain the three-dimensional location coordinates (x of all laser pointsi, yi, 0), to three-dimensional location coordinates (xi, yi, 0) and sphere surface fitting is carried out, it obtains
Tested pipeline center of circle three-dimensional coordinate (x0, y0, 0), and then obtain tested pipeline central coordinate of circle (x0, y0)；
Step 4: calculating tested pipeline central coordinate of circle (x0, y0) and benchmark central coordinate of circle (x01, y01) deviation situation (△
X, △ y), wherein △ x=x0-x01, △ y=y0-y01。
Beneficial effects of the present invention:
The present invention can be realized automatic measurement, improve the degree of automation, and measurement accuracy is high, at low cost；It can also
It enough realizes contactless measurement, i.e., is carried out in the case where not having to directly with instrument or human contact's pipeline efficiently, it is high-precision
The pipeline coaxality measurement of degree is suitable for the higher pipeline straight line degree measurement of installation dimension required precision and to requirement of real-time
Higher place.
Detailed description of the invention
Fig. 1 is the flow chart of pipeline the coaxial degree measurement provided by the invention；
Fig. 2 is the structural schematic diagram of pipeline the coaxial degree measurement provided by the invention；
Fig. 3 is the schematic diagram of pipeline the coaxial degree measurement provided by the invention.
Wherein,
1- laser emitter, 2- laser pickoff, 3- tested pipeline, 4- communication module, 5-PSD signal memory module, 6-
Measurement process module, 7- tested pipeline central coordinate of circle, 8- benchmark central coordinate of circle, the position coordinates (x of 9- laser pointi, yi), 10- branch
Frame, 11- adjustment bolt.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Whole description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.?
In description of the invention, it should be noted that term " on ", "lower", "inner", "outside" " front end ", " rear end ", " both ends ", " one
The orientation or positional relationship of the instructions such as end ", " other end " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.In addition, term " one ", " two " are only used for describing
Purpose is not understood to indicate or imply relative importance.Unless otherwise clearly defined and limited, term " installation ", " set
Be equipped with ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Of the existing technology in order to solve the problems, such as, as shown in Figure 1 to Figure 3, the present invention provides a kind of pipeline concentricities
Measuring system, including laser emitter 1, laser pickoff 2, PSD signal memory module 5, communication module 4 and measurement process module
6, the end of tested pipeline 3 is arranged in laser pickoff 2, and laser emitter 1 transmits a light beam to the input terminal of laser pickoff 2,
The output end of laser pickoff 2 is connect with the input terminal of PSD signal memory module 5, and PSD signal memory module 5 collects and records
The position coordinates of laser point on laser pickoff 2, the output end of PSD signal memory module 5 and the input terminal of measurement process module 6
Connection, measurement process module 6 carries out sphere surface fitting to the position coordinates of laser point and obtains tested pipeline central coordinate of circle 7, and compares
The deviation situation of tested pipeline central coordinate of circle 7 and benchmark central coordinate of circle 8.
As shown in Fig. 2, the light beam that laser emitter 1 emits is vertical with the end plane of tested pipeline 3, tested pipeline 3 is logical
It crosses adjustment bolt 11 to fix, the output end of laser pickoff 2 is connected with the input terminal of PSD signal memory module 5 by communication module 4
It connects, the output end of PSD signal memory module 5 is connect with the input terminal of measurement process module 6 by communication module 4, communication module 4
For serial communication, PSD signal memory module 5 is equipped with display screen, and laser pickoff 2 uses PSD position sensor, model PSD-
W203, measurement process module 6 use PC machine.
In the present embodiment, as shown in Figure 1, the model BA_T250_1070_E of laser emitter 1, is fixed on bracket 10
On, laser emitter 1 include laser tube and collimation component, the laser that laser tube is issued by collimation component formed collimation compared with
Good light beam, PSD signal memory module 5 are and the matching used prior art of laser pickoff 2, including PSD signal storage system
System and peripheral circuit, PSD signal memory module 5 can collect and record the position coordinates of laser point on laser pickoff 2 in real time,
PSD signal memory module 5 is equipped with display screen, carries out data real-time display, and operator can check coordinate information, PSD at the scene
The position coordinates that signal memory module 5 acquires pass to measurement process module 6 by communication module 4 and are analyzed, and show knot
Fruit, measurement process module 6 use PC machine, PSD signal memory module 5 and measurement process module 6 can real-time display, only one
A to show in PC machine, one shows at the scene, facilitates operator and handles the worker of data while grasping data.In the present invention
Measurement process module 6 position coordinates of laser point are carried out sphere surface fitting to obtain tested pipeline central coordinate of circle 7 being to pass through
Labview software realization, the position that PSD signal memory module 5 records is sat based on the sphere surface fitting module of Labview software
Mark is handled to obtain tested pipeline central coordinate of circle 7, calculates the deviation feelings of tested pipeline central coordinate of circle 7 and benchmark central coordinate of circle 8
Condition, to adjust the axle center of tested pipeline 3 in real time.
The application method of above-mentioned pipeline the coaxial degree measurement, comprising the following steps:
Step 1: laser emitter 1 emits light beam, acts on light beam on laser pickoff 2 and obtain laser point one, PSD
Position coordinates (the x of 5 recording laser point one of signal memory module1, y1)；
Step 2: repeating step 1, obtaining the position coordinates (x of laser point two 3-5 ° of 3 coaxial rotating of tested pipeline2,
y2), successively by 3 coaxial rotating of tested pipeline one week, PSD signal memory module 5 record all laser points position coordinates (xi,
Yi) 9, wherein i=1,2,3,4,5 ...；
Step 3: position coordinates (the x for all laser points that PSD signal memory module 5 is recordedi, yi) 9 set z coordinate as
0, obtain the three-dimensional location coordinates (x of all laser pointsi, yi, 0), to three-dimensional location coordinates (xi, yi, 0) and sphere surface fitting is carried out, it obtains
To tested pipeline center of circle three-dimensional coordinate (x0, y0, 0), from three-dimensional coordinate (x0, y0, 0) in choose two-dimensional coordinate (x0, y0), and then
To 7 (x of tested pipeline central coordinate of circle0, y0)；
Step 4: calculating 7 (x of tested pipeline central coordinate of circle0, y0) and 8 (x of benchmark central coordinate of circle01, y01) deviation situation
(△ x, △ y), wherein △ x=x0-x01, △ y=y0-y01。
The position coordinates (xi, yi) 9 for all laser points for recording PSD signal memory module 5 in the step 3 carry out
When sphere surface fitting, z coordinate is set as 0.In the present invention, the position coordinates of the laser point of record are two-dimensional coordinate, are carrying out ball
It when face is fitted, needs with three-dimensional coordinate, therefore, sets z coordinate as 0, progress sphere surface fitting.
In order to measure coaxial situation of the pipeline installation site with reference position, i.e. tested pipeline central coordinate of circle 7 and base
The deviation situation of quasi- central coordinate of circle 8 is measured using pipeline the coaxial degree measurement of the invention, as shown in figure 3, work is former
Reason are as follows: laser emitter 1 emits light beam, acts on light beam on laser pickoff 2, and PSD signal memory module 5 records current sharp
Luminous point is position coordinates；By tested pipeline 3 coaxial rotating, one angle, the angle is 3-5 ° in the present invention, and laser emitter 1 is sent out
Irradiating light beam acts on light beam on laser pickoff 2, and it is position coordinates that PSD signal memory module 5, which records present laser point, obtains
To the position coordinates of present laser point, as shown in Figure 3, arrow indicates that tested pipeline 3 rotates, successively that tested pipeline 3 is coaxial
It rotates a circle, repeats above step, PSD signal memory module 5 records obtained position coordinates (xi, yi), wherein i=1,2,3,
4,5 ...；At this point, data are transferred to measurement process module 6 by communication module 4 by PSD signal memory module 5, and pass through spherical surface
The method of fitting finds out 7 (x of tested pipeline central coordinate of circle0, y0), when carrying out sphere surface fitting, need to set z coordinate as 0, to
Obtain plane coordinates；And calculate 7 (x of tested pipeline central coordinate of circle0, y0) and 8 (x of benchmark central coordinate of circle01, y01) deviation situation
(△ x, △ y), wherein △ x=x0-x01, △ y=y0-y01, 8 (x of benchmark central coordinate of circle01, y01) be it is known, as need pair
Quasi- coordinate, then 3 concentricity of tested pipeline is adjusted.
In the present embodiment, transmitter 1 emits light beam, acts on light beam on laser pickoff 2, PSD signal memory module 5
Record present laser point is position coordinates, obtains the position coordinates of present laser point, and as shown in Figure 3, arrow indicates measured tube
Road 3 rotates, and rotating angle every time is 3-5 °, successively rotates 3 coaxial rotating of tested pipeline one week, PSD signal memory module 5 is remembered
Record obtained position coordinates (xi, yi), wherein i=1,2,3,4,5 ..., part of position coordinates (xi, yi) as shown in table 1,
At this point, data are transferred to measurement process module 6 by communication module 4 by PSD signal memory module 5, pass through Labview software ball
Face fits tested pipeline central coordinate of circle 7 (4.28102,3.22267), when carrying out sphere surface fitting, needs to set z coordinate as 0,
Plane coordinates is obtained, and calculates tested pipeline central coordinate of circle 7 (4.28102,3.22267) and known benchmark central coordinate of circle 8
The deviation situation (4.28102,3.22267) of (0,0), wherein 4.28102=4.28102-0,3.22267=3.22267-0,
Finally 3 concentricity of tested pipeline is adjusted according to deviation situation (4.28102,3.22267).
Portion coordinate (the x of table 1PSD signal memory module recordi, yi)
| i | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | … |
| xi | 4.824 | 4.41 | 3.332 | 0.959 | -5.172 | -2.479 | -4.282 | -5.691 | -5.949 | -4.627 | -3.959 | … |
| yi | 0.893 | 1.874 | 2.328 | 2.62 | -0.723 | -5.074 | -3.555 | -1.644 | -2.501 | -9.221 | -9.826 | … |
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of pipeline the coaxial degree measurement, which is characterized in that including laser emitter, laser pickoff, PSD signal storage
The end of tested pipeline, the laser emitter is arranged in module, communication module and measurement process module, the laser pickoff
Transmit a light beam to the input terminal of laser pickoff, the output end of the laser pickoff and the input terminal of PSD signal memory module
Connection, the PSD signal memory module collect and record the position coordinates of laser point on laser pickoff, and PSD signal stores mould
The output end of block and the input terminal of measurement process module connect, the measurement process module to the position coordinates of the laser point into
Row sphere surface fitting obtains tested pipeline central coordinate of circle, and the deviation of the tested pipeline central coordinate of circle and benchmark central coordinate of circle
Situation.
2. pipeline the coaxial degree measurement according to claim 1, which is characterized in that the light of the laser transmitter projects
Beam is vertical with the end plane of tested pipeline.
3. pipeline the coaxial degree measurement according to claim 1, which is characterized in that the output end of the laser pickoff
It is connect with the input terminal of PSD signal memory module by communication module, the output end of the PSD signal memory module and measured place
The input terminal for managing module is connected by communication module.
4. pipeline the coaxial degree measurement according to claim 3, which is characterized in that the communication module is logical for serial ports
Letter.
5. pipeline the coaxial degree measurement according to claim 1, which is characterized in that the PSD signal memory module is set
There is display screen.
6. pipeline the coaxial degree measurement according to claim 1, which is characterized in that the laser pickoff uses PSD
Position sensor.
7. pipeline the coaxial degree measurement according to claim 1, which is characterized in that the measurement process module uses PC
Machine.
8. a kind of application method of pipeline the coaxial degree measurement, using pipeline the coaxial degree measurement described in claim 1,
Characterized by comprising the following steps:
Step 1: the laser transmitter projects light beam, acts on light beam on the laser pickoff and obtains laser point one, institute
State the position coordinates (x of PSD signal memory module recording laser point one1, y1)；
Step 2: repeating step 1, obtaining the position coordinates (x of laser point two 3-5 ° of tested pipeline coaxial rotating2, y2), according to
It is secondary by tested pipeline coaxial rotating one week, the PSD signal memory module records the position coordinates (x of all laser pointsi, yi)；
Step 3: position coordinates (the x for all laser points that PSD signal memory module is recordedi, yi) z coordinate is set as 0, it obtains
Three-dimensional location coordinates (the x of all laser pointsi, yi, 0), to three-dimensional location coordinates (xi, yi, 0) and sphere surface fitting is carried out, it is tested
Pipeline center of circle three-dimensional coordinate (x0, y0, 0), and then obtain tested pipeline central coordinate of circle (x0, y0)；
Step 4: calculating tested pipeline central coordinate of circle (x0, y0) and benchmark central coordinate of circle (x01, y01) deviation situation (△ x, △
Y), wherein △ x=x0-x01, △ y=y0-y01。
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186400A (en) * | 2019-06-28 | 2019-08-30 | 哈尔滨焊接研究院有限公司 | Friction welding coaxial accuracy detection device and its detection method |
| CN110594594A (en) * | 2019-09-18 | 2019-12-20 | 湖南煦丹电力科技有限公司 | Intelligent pipeline blockage tester |
| CN110595280A (en) * | 2019-09-18 | 2019-12-20 | 中国科学院合肥物质科学研究院 | Device and method for calibrating axis consistency of efficient borescope |
| CN112163309A (en) * | 2020-07-27 | 2021-01-01 | 扬州市职业大学(扬州市广播电视大学) | Method for quickly extracting space circle center of single plane circular image |
| CN112414353A (en) * | 2020-11-10 | 2021-02-26 | 重庆市计量质量检测研究院 | Camshaft eccentricity error correction method |
| CN114738552A (en) * | 2022-02-23 | 2022-07-12 | 江苏格利尔光电科技有限公司 | Fixing device that warm siphunculus of building engineering was laid |
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| CN110186400A (en) * | 2019-06-28 | 2019-08-30 | 哈尔滨焊接研究院有限公司 | Friction welding coaxial accuracy detection device and its detection method |
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| CN112163309B (en) * | 2020-07-27 | 2023-06-02 | 扬州市职业大学(扬州市广播电视大学) | Method for rapidly extracting space circle center of single plane circle image |
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| CN112414353B (en) * | 2020-11-10 | 2022-03-01 | 重庆市计量质量检测研究院 | Camshaft eccentricity error correction method |
| CN114738552A (en) * | 2022-02-23 | 2022-07-12 | 江苏格利尔光电科技有限公司 | Fixing device that warm siphunculus of building engineering was laid |
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Effective date of registration: 20220922 Address after: No.142, Wanghua middle street, Dadong District, Shenyang, Liaoning 110000 Patentee after: SHENYANG HANGBO AUTOMATION TECHNOLOGY CO.,LTD. Address before: 110136, Liaoning, Shenyang moral and Economic Development Zone, No. 37 South Avenue moral Patentee before: SHENYANG AEROSPACE University |
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| TR01 | Transfer of patent right |