CN104345090A - Method and device for determining intersecting line scanning deflection angle for pipe welding - Google Patents
Method and device for determining intersecting line scanning deflection angle for pipe welding Download PDFInfo
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Abstract
The invention relates to a method and a device for determining an intersecting line scanning deflection angle for pipe welding. The device comprises an image information acquisition module for acquiring image information during intersecting line scanning, an AB image coordinate value acquisition module for acquiring a connecting line AB between two top angles, namely a point A and a point B, which are close to an intersecting line, of four top angles of an ultrasonic probe and two image coordinate values according to splash image information, a CD image coordinate value acquisition module for acquiring a connecting line CD between a point C and a point D and two image coordinate values according to edge line image information and the splash image information, and a deflection angle acquisition module for acquiring an included angle of the connecting line CD and the connecting line AB according to the image coordinate values. According to the method and the device for determining the intersecting line scanning deflection angle for pipe welding, the deflection angle of the probe and the deflection angle of the edge line of the intersecting line are acquired according to the image coordinate values; a difference value of the two deflection angles is the real-time determined intersecting line scanning deflection angle, and the reliability of an ultrasonic flaw detection result is improved.
Description
Technical field
The present invention relates to UT (Ultrasonic Testing) technical field, particularly relate to a kind of method and apparatus determining the intersection scanning deflection angle of pipe fitting welding.
Background technology
As everyone knows, the carrying out flaw detection of pipe fitting intersection welding seam is part the most difficult in UT (Ultrasonic Testing) testing process always.Pipe fitting intersection welding seam is different at the section of weld joint in each place, weld width, relative depth etc. all can change at any time along with the change of position, and for all keeping ultrasonic beam vertical with current location weld seam in each flaw detection position, need to adjust suitable probe flaw detection angle at any time.In addition, the different cross section of diverse location and relative depth, multiple reflection reflection etc. cause great difficulty all can to the positioning work of pipe fitting intersection welding seam defect.So we urgently wish to utilize the carrying out flaw detection process of state-of-the-art technology to pipe fitting intersection welding seam to simplify, to facilitate the scene flaw detection work of pipe fitting intersection welding seam.
Summary of the invention
The object of the invention is to propose a kind of method and apparatus determining the intersection scanning deflection angle of pipe fitting welding, intersection scanning deflection angle can be determined in real time, improve the reliability of UT (Ultrasonic Testing) testing result.
For reaching this object, the present invention by the following technical solutions:
First aspect, provides a kind of method determining the intersection scanning deflection angle of pipe fitting welding, comprising:
Obtain image information when doing intersection scanning, described image information comprises the edge line image information of color spot image information corresponding to ultrasonic probe four drift angle and intersection;
According to described color spot image information, obtain the image coordinate value of 2 drift angle A points of close intersection in ultrasonic probe four drift angle and line AB and two difference correspondence of B point;
According to described edge line image information and color spot image information, with with image projection line parallel and through the line segment of A point or B point for symmetrical center line, on intersection edge line, symmetry chooses C point and D point, and the image coordinate value that line CD and two that obtains C point and D point corresponding respectively, described image information also comprises image projection line, and described image projection line is correspond to the line segment of ultrasonic beam axis at the projection line of tube surface in image information;
According to described image coordinate value, obtain the angle of line CD and line AB, described angle is intersection scanning deflection angle.
Wherein, described on intersection edge line symmetry choose C point and D point, comprising:
On intersection edge line, symmetry chooses C point and D point, and the line CD of C point and D point and the intersection point of described symmetrical center line are the mid point of line CD.
Wherein, described according to described image coordinate value, obtain the angle of line CD and line AB, described angle is intersection scanning deflection angle, comprising:
According to described color spot image information, obtain the image coordinate value of A point and B point correspondence, be respectively A (x1, y1), B (x2, y2);
According to described edge line image information, obtain the image coordinate value of C point and D point correspondence, be respectively C (x3, y3), D (x4, y4);
According to described image coordinate value, obtain slope K ab=(y2-y1)/(x2-x1), slope K cd=(y3-y4)/(x3-x4);
According to described slope, obtain the angle of line CD and line AB, described angle=| arctanKcd-arctanKab|, described angle is intersection scanning deflection angle.
Wherein, the size of described image information is 480 × 640.
Wherein, after the angle of described acquisition line CD and line AB, comprising: the scanning deflection angle that display in real time obtains.
Second aspect, provides a kind of device determining the intersection scanning deflection angle of pipe fitting welding, comprising:
Obtain image information module, for obtaining image information when doing intersection scanning, described image information comprises the edge line image information of color spot image information corresponding to ultrasonic probe four drift angle and intersection;
Obtain AB image coordinate value module, for according to described color spot image information, obtain the image coordinate value of 2 drift angle A points of close intersection in ultrasonic probe four drift angle and line AB and two difference correspondence of B point;
Obtain CD image coordinate value module, for according to described edge line image information and color spot image information, with with image projection line parallel and through the line segment of A point or B point for symmetrical center line, on intersection edge line, symmetry chooses C point and D point, and the image coordinate value that line CD and two that obtains C point and D point corresponding respectively, described image information also comprises image projection line, and described image projection line is correspond to the line segment of ultrasonic beam axis at the projection line of tube surface in image information;
Obtain deflection angle module, for according to described image coordinate value, obtain the angle of line CD and line AB, described angle is intersection scanning deflection angle.
Wherein, described on intersection edge line symmetry choose C point and D point, comprising:
On intersection edge line, symmetry chooses C point and D point, and the line CD of C point and D point and the intersection point of described symmetrical center line are the mid point of line CD.
Wherein, described acquisition deflection angle module, specifically for: according to described color spot image information, obtain the image coordinate value of A point and B point correspondence, be respectively A (x1, y1), B (x2, y2); According to described edge line image information, obtain the image coordinate value of C point and D point correspondence, be respectively C (x3, y3), D (x4, y4); According to described image coordinate value, obtain slope K ab=(y2-y1)/(x2-x1), slope K cd=(y3-y4)/(x3-x4); According to described slope, obtain the angle of line CD and line AB, described angle=| arctanKcd-arctanKab|, described angle is intersection scanning deflection angle.
Wherein, the size of described image information is 480 × 640.
Wherein, describedly determine that the device of the intersection scanning deflection angle of pipe fitting welding also comprises display module; Described display module, for showing the scanning deflection angle of acquisition in real time.
Beneficial effect of the present invention is: a kind of method and apparatus determining the intersection scanning deflection angle of pipe fitting welding, comprises and obtains image information module, acquisition AB image coordinate value module, acquisition CD image coordinate value module and obtain deflection angle module; Described acquisition image information module, for obtaining image information when doing intersection scanning, described image information comprises the edge line image information of color spot image information corresponding to ultrasonic probe four drift angle and intersection; Described acquisition AB image coordinate value module, for according to described color spot image information, obtains the image coordinate value of 2 drift angle A points of close intersection in ultrasonic probe four drift angle and line AB and two difference correspondence of B point; Described acquisition CD image coordinate value module, for according to described edge line image information and color spot image information, with with image projection line parallel and through the line segment of A point or B point for symmetrical center line, on intersection edge line, symmetry chooses C point and D point, and the image coordinate value that line CD and two that obtains C point and D point corresponding respectively, described image information also comprises image projection line, and described image projection line is correspond to the line segment of ultrasonic beam axis at the projection line of tube surface in image information; Described acquisition deflection angle module, for according to described image coordinate value, obtain the angle of line CD and line AB, described angle is intersection scanning deflection angle.Visible, this determines the method and apparatus of the intersection scanning deflection angle of pipe fitting welding, probe deflection angle and intersection edge line deflection angle is obtained by image coordinate value, the difference of above-mentioned two deflection angles is the intersection scanning deflection angle determined in real time, improves the reliability of UT (Ultrasonic Testing) testing result.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing the embodiment of the present invention is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the content of the embodiment of the present invention and these accompanying drawings.
Fig. 1 is the method flow diagram determining method first embodiment of the intersection scanning deflection angle of pipe fitting welding provided by the invention.
Fig. 2 is the method flow diagram determining method second embodiment of the intersection scanning deflection angle of pipe fitting welding provided by the invention.
Fig. 3 is the image information schematic diagram that the present invention utilizes the method for the intersection scanning deflection angle determining pipe fitting welding and gathers.
Fig. 4 is the block diagram determining device first embodiment of the intersection scanning deflection angle of pipe fitting welding provided by the invention.
Fig. 5 is the block diagram determining device second embodiment of the intersection scanning deflection angle of pipe fitting welding provided by the invention.
Embodiment
The technical matters solved for making the present invention, the technical scheme of employing and the technique effect that reaches are clearly, be described in further detail below in conjunction with the technical scheme of accompanying drawing to the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those skilled in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, it is the method flow diagram determining method first embodiment of the intersection scanning deflection angle of pipe fitting welding provided by the invention.The method of the intersection scanning deflection angle of the determination pipe fitting welding of the embodiment of the present invention, can be applicable to all kinds of ultra-sonic defect detector.
This determines the method for the intersection scanning deflection angle of pipe fitting welding, comprising:
Step S101, obtain image information when doing intersection scanning, described image information comprises the edge line image information of color spot image information corresponding to ultrasonic probe four drift angle and intersection.
Pipe fitting welding, needs, by plural basic pipe fitting, to be welded by different modes sometimes.Can produce two basic pipe fitting cubic phase friendship conditions during welding, two basic pipe fitting solids intersect and are called that two cubic phases pass through, and the intersection that the surface of basic pipe fitting is formed is called intersection.Intersection is the total line of two three-dimensional surfaces, is also the separatrix of two solids, and the point on intersection is the total point of two three-dimensional surfaces.Intersection is generally closed space curve.
Obtain the image information being arranged at the position line of intersection position, can by fixing one towards the camera of position line on the ultrasonic probe of ultra-sonic defect detector, when ultrasonic probe does intersection scanning on pipe fitting, camera is synchronized with the movement with the motion of ultrasonic probe.
Step S102, according to described color spot image information, obtain the image coordinate value near line AB and two difference correspondence of 2 drift angle A points of intersection and B point in ultrasonic probe four drift angle.
The image coordinate value of A point and B point correspondence, can be used to obtain probe deflection angle.
Step S103, according to described edge line image information and color spot image information, with with image projection line parallel and through the line segment of A point or B point for symmetrical center line, on intersection edge line, symmetry chooses C point and D point, and the image coordinate value that line CD and two that obtains C point and D point corresponding respectively, described image information also comprises image projection line, and described image projection line is correspond to the line segment of ultrasonic beam axis at the projection line of tube surface in image information.
The image coordinate value of C point and D point correspondence, can be used to obtain intersection edge line deflection angle.
Step S104, according to described image coordinate value, obtain the angle of line CD and line AB, described angle is intersection scanning deflection angle.
The acquisition of deflection angle can help ultrasonic probe when scanning in real time perpendicular to intersection, thus reaches the reliability of raising UT (Ultrasonic Testing) testing result and the object of accuracy.
The method determining the intersection scanning deflection angle of pipe fitting welding provided by the invention, probe deflection angle and intersection edge line deflection angle is obtained by image coordinate value, the difference of above-mentioned two deflection angles is the intersection scanning deflection angle determined in real time, improves the reliability of UT (Ultrasonic Testing) testing result.
Please refer to Fig. 2, it is the method flow diagram determining method second embodiment of the intersection scanning deflection angle of pipe fitting welding provided by the invention.The present embodiment is with the key distinction of method first embodiment of the intersection scanning deflection angle determining pipe fitting welding, adds reconnaissance on intersection edge line, obtains intersection scanning deflection angle, the illustrating of the step of display scanning deflection angle.
This determines the method for the intersection scanning deflection angle of pipe fitting welding, comprising:
Step S201, obtain image information when doing intersection scanning, described image information comprises the edge line image information of color spot image information corresponding to ultrasonic probe four drift angle and intersection.
Wherein, the size of described image information is 480 × 640.
Please refer to Fig. 3, it is the image information schematic diagram that the present invention utilizes the method for the intersection scanning deflection angle determining pipe fitting welding and gathers.
In figure, A point and B point are two drift angles near intersection in ultrasonic probe four drift angle, and C point and D point are the symmetrical point chosen on intersection edge line, and β is intersection scanning deflection angle.
Step S202, according to described color spot image information, obtain the image coordinate value near line AB and two difference correspondence of 2 drift angle A points of intersection and B point in ultrasonic probe four drift angle.
Step S203, according to described edge line image information and color spot image information, with with image projection line parallel and through the line segment of A point or B point for symmetrical center line, on intersection edge line, symmetry chooses C point and D point, and the image coordinate value that line CD and two that obtains C point and D point corresponding respectively, described image information also comprises image projection line, and described image projection line is correspond to the line segment of ultrasonic beam axis at the projection line of tube surface in image information.
Wherein, described on intersection edge line symmetry choose C point and D point, comprising:
On intersection edge line, symmetry chooses C point and D point, and the line CD of C point and D point and the intersection point of described symmetrical center line are the mid point of line CD.
Step S204, according to described color spot image information, obtain A point and B point correspondence image coordinate value, be respectively A (x1, y1), B (x2, y2);
According to described edge line image information, obtain the image coordinate value of C point and D point correspondence, be respectively C (x3, y3), D (x4, y4);
According to described image coordinate value, obtain slope K ab=(y2-y1)/(x2-x1), slope K cd=(y3-y4)/(x3-x4);
According to described slope, obtain the angle of line CD and line AB, described angle=| arctanKcd-arctanKab|, described angle is intersection scanning deflection angle.
The scanning deflection angle that step S205, in real time display obtain.
The method determining the intersection scanning deflection angle of pipe fitting welding provided by the invention, by the image coordinate value of the image information gathered is converted to line segment slope, again line segment slope is converted to probe deflection angle and intersection edge line deflection angle, to determine intersection scanning deflection angle in real time, improve the reliability of UT (Ultrasonic Testing) testing result.
The embodiment of the device of the intersection scanning deflection angle of the determination pipe fitting welding provided for the embodiment of the present invention below.Determine that the embodiment of the method for the embodiment of the device of the intersection scanning deflection angle of pipe fitting welding and the intersection scanning deflection angle of above-mentioned determination pipe fitting welding belongs to same design, determine the detail content of not detailed description in the embodiment of the device of the intersection scanning deflection angle of pipe fitting welding, can with reference to the above-mentioned embodiment of the method determining the intersection scanning deflection angle of pipe fitting welding.
Please refer to Fig. 4, it is the block diagram determining device first embodiment of the intersection scanning deflection angle of pipe fitting welding provided by the invention.
This determines the device of the intersection scanning deflection angle of pipe fitting welding, comprising:
Obtain image information module 10, for obtaining image information when doing intersection scanning, described image information comprises the edge line image information of color spot image information corresponding to ultrasonic probe four drift angle and intersection.
Obtain AB image coordinate value module 20, for according to described color spot image information, obtain the image coordinate value of 2 drift angle A points of close intersection in ultrasonic probe four drift angle and line AB and two difference correspondence of B point.
Obtain CD image coordinate value module 30, for according to described edge line image information and color spot image information, with with image projection line parallel and through the line segment of A point or B point for symmetrical center line, on intersection edge line, symmetry chooses C point and D point, and the image coordinate value that line CD and two that obtains C point and D point corresponding respectively, described image information also comprises image projection line, and described image projection line is correspond to the line segment of ultrasonic beam axis at the projection line of tube surface in image information.
Obtain deflection angle module 40, for according to described image coordinate value, obtain the angle of line CD and line AB, described angle is intersection scanning deflection angle.
The device determining the intersection scanning deflection angle of pipe fitting welding provided by the invention, probe deflection angle and intersection edge line deflection angle is obtained by image coordinate value, the difference of above-mentioned two deflection angles is the intersection scanning deflection angle determined in real time, improves the reliability of UT (Ultrasonic Testing) testing result.
Please refer to Fig. 5, it is the block diagram determining second embodiment of the intersection scanning deflection angle of pipe fitting welding provided by the invention.The present embodiment is with the key distinction of device first embodiment of the intersection scanning deflection angle determining pipe fitting welding, adds display module 50.
This determines the device of the intersection scanning deflection angle of pipe fitting welding, comprising:
Obtain image information module 10, for obtaining image information when doing intersection scanning, described image information comprises the edge line image information of color spot image information corresponding to ultrasonic probe four drift angle and intersection.
Obtain AB image coordinate value module 20, for according to described color spot image information, obtain the image coordinate value of 2 drift angle A points of close intersection in ultrasonic probe four drift angle and line AB and two difference correspondence of B point.
Obtain CD image coordinate value module 30, for according to described edge line image information and color spot image information, with with image projection line parallel and through the line segment of A point or B point for symmetrical center line, on intersection edge line, symmetry chooses C point and D point, and the image coordinate value that line CD and two that obtains C point and D point corresponding respectively, described image information also comprises image projection line, and described image projection line is correspond to the line segment of ultrasonic beam axis at the projection line of tube surface in image information.
Obtain deflection angle module 40, for according to described image coordinate value, obtain the angle of line CD and line AB, described angle is intersection scanning deflection angle.
Wherein, described on intersection edge line symmetry choose C point and D point, comprising:
On intersection edge line, symmetry chooses C point and D point, and the line CD of C point and D point and the intersection point of described symmetrical center line are the mid point of line CD.
Wherein, described acquisition deflection angle module 40, specifically for: according to described color spot image information, obtain the image coordinate value of A point and B point correspondence, be respectively A (x1, y1), B (x2, y2); According to described edge line image information, obtain the image coordinate value of C point and D point correspondence, be respectively C (x3, y3), D (x4, y4); According to described image coordinate value, obtain slope K ab=(y2-y1)/(x2-x1), slope K cd=(y3-y4)/(x3-x4); According to described slope, obtain the angle of line CD and line AB, described angle=| arctanKcd-arctanKab|, described angle is intersection scanning deflection angle.
Wherein, the size of described image information is 480 × 640.
Wherein, describedly determine that the device of the intersection scanning deflection angle of pipe fitting welding also comprises display module 50, described display module 50, for showing the scanning deflection angle of acquisition in real time.
The device determining the intersection scanning deflection angle of pipe fitting welding provided by the invention, by the image coordinate value of the image information gathered is converted to line segment slope, again line segment slope is converted to probe deflection angle and intersection edge line deflection angle, to determine intersection scanning deflection angle in real time, improve the reliability of UT (Ultrasonic Testing) testing result.
The method and apparatus determining the intersection scanning deflection angle of pipe fitting welding provided by the invention, detects intelligentized realization strided forward again major step for realizing UT (Ultrasonic Testing).The display data of display screen can be checked intuitively during carrying out flaw detection; decrease the number of times with the finger manipulation ultra-sonic defect detector being stained with couplant; too much couplant is avoided to be stained with on ultra-sonic defect detector; thus certain protective effect is played to the ultra-sonic defect detector of precision, extend the serviceable life of ultra-sonic defect detector.
Determine a method and apparatus for the intersection scanning deflection angle of pipe fitting welding, intersection scanning deflection angle can be determined in real time, improve the reliability of UT (Ultrasonic Testing) testing result.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, this program can be stored in a computer-readable recording medium, and storage medium can comprise storer, disk or CD etc.
Above content is only preferred embodiment of the present invention, and for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (10)
1. determine a method for the intersection scanning deflection angle of pipe fitting welding, it is characterized in that, comprising:
Obtain image information when doing intersection scanning, described image information comprises the edge line image information of color spot image information corresponding to ultrasonic probe four drift angle and intersection;
According to described color spot image information, obtain the image coordinate value of 2 drift angle A points of close intersection in ultrasonic probe four drift angle and line AB and two difference correspondence of B point;
According to described edge line image information and color spot image information, with with image projection line parallel and through the line segment of A point or B point for symmetrical center line, on intersection edge line, symmetry chooses C point and D point, and the image coordinate value that line CD and two that obtains C point and D point corresponding respectively, described image information also comprises image projection line, and described image projection line is correspond to the line segment of ultrasonic beam axis at the projection line of tube surface in image information;
According to described image coordinate value, obtain the angle of line CD and line AB, described angle is intersection scanning deflection angle.
2. the method determining the intersection scanning deflection angle of pipe fitting welding according to claim 1, is characterized in that, described on intersection edge line symmetry choose C point and D point, comprising:
On intersection edge line, symmetry chooses C point and D point, and the line CD of C point and D point and the intersection point of described symmetrical center line are the mid point of line CD.
3. the method determining the intersection scanning deflection angle of pipe fitting welding according to claim 1, is characterized in that, described according to described image coordinate value, and obtain the angle of line CD and line AB, described angle is intersection scanning deflection angle, comprising:
According to described color spot image information, obtain the image coordinate value of A point and B point correspondence, be respectively A (x1, y1), B (x2, y2);
According to described edge line image information, obtain the image coordinate value of C point and D point correspondence, be respectively C (x3, y3), D (x4, y4);
According to described image coordinate value, obtain slope K ab=(y2-y1)/(x2-x1), slope K cd=(y3-y4)/(x3-x4);
According to described slope, obtain the angle of line CD and line AB, described angle=| arctanKcd-arctanKab|, described angle is intersection scanning deflection angle.
4. the method determining the intersection scanning deflection angle of pipe fitting welding according to claim 1, is characterized in that, the size of described image information is 480 × 640.
5. the method determining the intersection scanning deflection angle of pipe fitting welding according to claim 1, is characterized in that, after the angle of described acquisition line CD and line AB, comprising: the scanning deflection angle that display in real time obtains.
6. determine a device for the intersection scanning deflection angle of pipe fitting welding, it is characterized in that, comprising:
Obtain image information module, for obtaining image information when doing intersection scanning, described image information comprises the edge line image information of color spot image information corresponding to ultrasonic probe four drift angle and intersection;
Obtain AB image coordinate value module, for according to described color spot image information, obtain the image coordinate value of 2 drift angle A points of close intersection in ultrasonic probe four drift angle and line AB and two difference correspondence of B point;
Obtain CD image coordinate value module, for according to described edge line image information and color spot image information, with with image projection line parallel and through the line segment of A point or B point for symmetrical center line, on intersection edge line, symmetry chooses C point and D point, and the image coordinate value that line CD and two that obtains C point and D point corresponding respectively, described image information also comprises image projection line, and described image projection line is correspond to the line segment of ultrasonic beam axis at the projection line of tube surface in image information;
Obtain deflection angle module, for according to described image coordinate value, obtain the angle of line CD and line AB, described angle is intersection scanning deflection angle.
7. the device determining the intersection scanning deflection angle of pipe fitting welding according to claim 6, is characterized in that, described on intersection edge line symmetry choose C point and D point, comprising:
On intersection edge line, symmetry chooses C point and D point, and the line CD of C point and D point and the intersection point of described symmetrical center line are the mid point of line CD.
8. the device determining the intersection scanning deflection angle of pipe fitting welding according to claim 6, is characterized in that,
Described acquisition deflection angle module, specifically for: according to described color spot image information, obtain the image coordinate value of A point and B point correspondence, be respectively A (x1, y1), B (x2, y2); According to described edge line image information, obtain the image coordinate value of C point and D point correspondence, be respectively C (x3, y3), D (x4, y4); According to described image coordinate value, obtain slope K ab=(y2-y1)/(x2-x1), slope K cd=(y3-y4)/(x3-x4); According to described slope, obtain the angle of line CD and line AB, described angle=| arctanKcd-arctanKab|, described angle is intersection scanning deflection angle.
9. the device determining the intersection scanning deflection angle of pipe fitting welding according to claim 6, is characterized in that, the size of described image information is 480 × 640.
10. the device determining the intersection scanning deflection angle of pipe fitting welding according to claim 6, is characterized in that, describedly determines that the device of the intersection scanning deflection angle of pipe fitting welding also comprises display module; Described display module, for showing the scanning deflection angle of acquisition in real time.
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| CN104345090B (en) | 2017-02-22 |
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