Polar coordinate type ultrasonic detection imaging device
Through the polar coordinate ultrasonic detection imaging device, the flexible movement of the ultrasonic probe is achieved by using the combination of frame and moving parts, solving the problem of limited movement of the ultrasonic probe in the prior art, and realizing the detection of large and curvature-changing structures.
Patent Information
- Application Number
- CN202422319625.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-23
AI Technical Summary
The movement of the ultrasonic probe in the existing ultrasonic detection imaging device is limited by the three-dimensional scanning axis, and cannot adapt to large or curvature-changing structures, resulting in difficulty in detection.
Using polar coordinate ultrasonic detection and imaging device, the ultrasonic probe is installed on the length moving part through the combination of frame, angle moving part and length moving part to realize polar coordinate movement, covering the entire surface of the detection specimen, and combining a rotary encoder and a linear encoder to calculate the probe position.
It realizes flexible movement of the ultrasonic probe on large and curvature-changing structures, and can draw complete detection images, solving the adaptability problem of conventional ultrasonic detection.
Smart Images
Figure CN223166679U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ultrasonic testing, in particular to a polar coordinate type ultrasonic testing imaging device. Background Art
[0002] Ultrasonic testing technology is a technology that interacts ultrasonic waves with a test piece to detect defects, measure geometric characteristics, detect and characterize changes in organizational structure and mechanical properties of the test piece, and then evaluate its specific application. Based on the ultrasonic testing signals obtained after interacting with the test piece, combined with the position coordinates of the ultrasonic probe and performing point-by-point scanning, ultrasonic testing imaging can be achieved.
[0003] In existing ultrasonic testing imaging devices, the movement of the ultrasonic probe is mostly based on rigid three-dimensional scanning axes. The ultrasonic probe can only move linearly along the fixed X-axis, Y-axis, and Z-axis within the space restricted by the three-dimensional scanning axes. The test piece to be detected must be able to be placed within the space restricted by the three-dimensional scanning axes. Existing ultrasonic testing imaging devices often cannot adapt to the detection of large structures and in-service structures.
[0004] In addition, the detection plane of the test piece to be detected needs to be parallel to the scanning plane. However, in existing ultrasonic testing imaging devices, the orientation and position of the ultrasonic probe are fixed and not adaptable to changes in the curvature of the structure. Summary of the Utility Model
[0005] The technical problem to be solved by the utility model is to provide a polar coordinate type ultrasonic testing imaging device aiming at the deficiencies of the prior art.
[0006] The technical solution of the utility model to solve the above technical problems is as follows: A polar coordinate type ultrasonic testing imaging device includes: a frame, an angular movement member, a length movement member, and an ultrasonic probe. The bottom of the angular movement member is rotatably installed on the frame, the length movement member is slidably installed on the top of the angular movement member, and the ultrasonic probe is installed on the length movement member.
[0007] The beneficial effects of adopting the technical solution of the utility model are as follows: The frame is installed on the detection object to provide a reference for the coordinate calculation of the ultrasonic probe. The ultrasonic probe is installed on the length movement member and moves with the length movement member. Through the combined movement of the angular movement member and the length movement member, the movement range of the ultrasonic probe can cover the entire surface of the test piece. Under the limitation of the movement mechanism, the movement of the ultrasonic probe can be described in a polar coordinate manner. Calculating the position of the ultrasonic probe in the form of polar coordinates, the ultrasonic probe and the positioning device are only connected by a length movement member, with a simple structure, good flexibility, and convenient layout. It can be installed on large structures and in-service structures, and can avoid problems that cannot be achieved by conventional ultrasonic immersion testing; it has good flexibility and can solve the problem that conventional ultrasonic rigid C-scanning is not adaptable to changes in the curvature of the structure.
[0008] Further, the bottom of the angular moving member is rotatably mounted at the central position of the frame.
[0009] The beneficial effect of adopting the above further technical solution is: it is convenient for the angular moving member to rotate with the center of the frame as the axis.
[0010] Further, the length moving member is horizontally slidably mounted on the top of the angular moving member.
[0011] The beneficial effect of adopting the above further technical solution is: it is convenient for the length moving member to move horizontally along the angular moving member.
[0012] Further, the frame includes: a bottom plate, a plurality of legs, and a rotary encoder. The bottom plate is a rectangular plate structure with a first through hole in the center. The rotary encoder is installed in the first through hole, and the plurality of legs are respectively installed at the corners of the bottom plate.
[0013] The beneficial effect of adopting the above further technical solution is: calculating the rotation angle of the ultrasonic probe by using the value output by the rotary encoder. The setting of the legs provides stable support for the polar coordinate type ultrasonic detection and imaging device.
[0014] Further, the angular moving member includes: a connecting platform and a linear encoder. The connecting platform is connected to the frame through a rotating shaft. The linear encoder is provided with a second through hole, and the length moving member is slidably mounted in the second through hole.
[0015] The beneficial effect of adopting the above further technical solution is: the length moving member is connected to the angular moving member through the second through hole of the linear encoder in the angular moving member, so that the rotation axis of the linear encoder coincides with the axis of the rotary encoder. Calculating the distance between the ultrasonic probe and the center of the bottom plate by using the value output by the linear encoder.
[0016] Further, both the rotary encoder and the linear encoder are connected to a data acquisition card. The ultrasonic probe is connected to an ultrasonic flaw detector, and both the ultrasonic flaw detector and the data acquisition card are connected to a computer.
[0017] The beneficial effects of adopting the above further technical solution are as follows: The ultrasonic flaw detector is connected to the ultrasonic probe, enabling the ultrasonic probe to excite and receive ultrasonic signals, and acquiring detection signals at different positions during the detection process of the ultrasonic probe; the data acquisition card is connected to the frame and the motion mechanism to obtain the motion information of the ultrasonic probe; the computer is respectively connected to the ultrasonic flaw detector and the data acquisition card, converting the digital ultrasonic signals collected by the data acquisition card into pixel colors, and converting the motion information of the ultrasonic probe collected by the data acquisition card into the coordinates of the ultrasonic probe, thereby obtaining a detection image of the test piece to be detected. In the computer, the value output by the linear encoder is used to calculate the distance between the ultrasonic probe and the center of the bottom plate, and the value output by the rotary encoder is used to calculate the rotation angle of the ultrasonic probe, and the position of the ultrasonic probe is determined in the form of polar coordinates. At the same time, the computer converts the detection signals collected by the ultrasonic probe into pixel values, combines them with the position coordinates of the ultrasonic probe, and realizes ultrasonic detection imaging. The operator needs to further move the ultrasonic probe according to the detection image until a complete detection image is drawn.
[0018] Further, the connection platform is in the shape of a duckbill head.
[0019] The beneficial effects of adopting the above further technical solution are as follows: It is convenient for the length moving part to rotate relative to the frame, increasing the versatility of this embodiment.
[0020] Further, the length moving part is connected with a hinge structure, the hinge structure is connected with a clamp, and the ultrasonic probe is installed in the clamp.
[0021] The beneficial effects of adopting the above further technical solution are as follows: The ultrasonic probe is connected to the length moving part through the hinge structure, and the attitude of the ultrasonic probe can be adjusted through the hinge structure.
[0022] Further, the clamp includes a pair of arc-shaped plates, one end of the pair of arc-shaped plates is hinged, and the other end of the pair of arc-shaped plates is connected by bolts.
[0023] The beneficial effects of adopting the above further technical solution are as follows: It is convenient to stably clamp the ultrasonic probe through a pair of arc-shaped plates, facilitating the installation and maintenance of the ultrasonic probe.
[0024] Further, the length moving part is a metal sliding rod.
[0025] The beneficial effects of adopting the above further technical solution are as follows: The ultrasonic probe and the positioning device are only connected by a metal sliding rod, with a simple structure, good flexibility, and convenient layout.
[0026] The advantages of the additional aspects of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 One of the schematic structural diagrams of the polar coordinate type ultrasonic detection imaging device provided by the embodiment of the present utility model.
[0028] Figure 2 Two of the schematic structural diagrams of the polar coordinate type ultrasonic detection imaging device provided by the embodiment of the present utility model.
[0029] Figure 3 Three of the schematic structural diagrams of the polar coordinate type ultrasonic detection imaging device provided by the embodiment of the present utility model.
[0030] Explanation of the reference numerals in the drawings: 1. Frame; 2. Angular moving member; 3. Linear moving member; 4. Base plate; 5. Leg; 6. Rotary encoder; 7. Connection platform; 8. Linear encoder; 9. Ultrasonic probe; 10. Fixture; 11. Hinge structure; 12. Data acquisition card; 13. Ultrasonic flaw detector; 14. Computer. Specific embodiments
[0031] The principles and features of the present utility model are described below in conjunction with the accompanying drawings. The embodiments cited are only used to explain the present utility model and are not intended to limit the scope of the present utility model.
[0032] As Figures 1 to 3 shown, the embodiment of the present utility model provides a polar coordinate type ultrasonic detection imaging device, including: a frame 1, an angular moving member 2, a linear moving member 3, and an ultrasonic probe 9. The bottom of the angular moving member 2 is rotatably installed on the frame 1, the linear moving member 3 is slidably installed on the top of the angular moving member 2, and the ultrasonic probe 9 is installed on the linear moving member 3.
[0033] The beneficial effects of adopting the technical solution of the present utility model are as follows: The frame is installed on the detection object to provide a reference for the coordinate calculation of the ultrasonic probe. The ultrasonic probe is installed on the linear moving member and moves with the linear moving member. Through the combined movement of the angular moving member and the linear moving member, the movement range of the ultrasonic probe can cover the entire surface of the detection specimen. Under the limitation of the movement mechanism, the movement of the ultrasonic probe can be described in a polar coordinate manner. By calculating the position of the ultrasonic probe in the form of polar coordinates, the ultrasonic probe and the positioning device are only connected by a linear moving member, with a simple structure, good flexibility, and convenient layout. It can be installed on large structures and in-service structures, and can avoid problems that cannot be achieved by conventional ultrasonic immersion detection; it has good flexibility and can solve the problem that conventional ultrasonic rigid C-scanning is not adaptable to the curvature change of the structure.
[0034] As Figure 1As shown in the figure, both the frame and the motion mechanism are connected to the data acquisition card, which is used for collecting position data. The motion mechanism includes an angular motion component and a linear motion component. The ultrasonic probe is connected to the motion mechanism. The ultrasonic flaw detector is connected to the ultrasonic probe and is used for collecting acoustic data. Both the ultrasonic flaw detector and the data acquisition card are connected to the computer, which is used for ultrasonic imaging.
[0035] As Figures 1 to 3 shown in the figure, further, the bottom of the angular motion component 2 is rotatably installed at the central position of the frame 1.
[0036] The beneficial effect of adopting the above further technical solution is: it is convenient for the angular motion component to rotate around the center axis of the frame.
[0037] As Figures 1 to 3 shown in the figure, further, the linear motion component 3 is horizontally slidably installed on the top of the angular motion component 2.
[0038] The beneficial effect of adopting the above further technical solution is: it is convenient for the linear motion component to move horizontally along the angular motion component.
[0039] As Figures 1 to 3 shown in the figure, further, the frame 1 includes: a bottom plate 4, a plurality of legs 5, and a rotary encoder 6. The bottom plate 4 is a rectangular plate structure with a first through hole in the center, and the rotary encoder 6 is installed in the first through hole. The plurality of legs 5 are respectively installed at the corners of the bottom plate 4.
[0040] The beneficial effect of adopting the above further technical solution is: calculating the rotation angle of the ultrasonic probe by using the value output by the rotary encoder. The setting of the legs provides stable support for the polar coordinate type ultrasonic detection imaging device.
[0041] As Figures 1 to 3 shown in the figure, further, the angular motion component 2 includes: a connecting platform 7 and a linear encoder 8. The connecting platform 7 is connected to the frame 1 through a rotating shaft. The linear encoder 8 is provided with a second through hole, and the linear motion component 3 is slidably installed in the second through hole.
[0042] The beneficial effect of adopting the above further technical solution is: the linear motion component is connected to the angular motion component through the second through hole of the linear encoder in the angular motion component, so that the rotation axis of the linear encoder coincides with the axis of the rotary encoder. Calculating the distance between the ultrasonic probe and the center of the bottom plate by using the value output by the linear encoder.
[0043] As Figures 1 to 3As shown in the figure, further, both the rotary encoder 6 and the linear encoder 8 are connected to a data acquisition card 12, the ultrasonic probe 9 is connected to an ultrasonic flaw detector 13, and both the ultrasonic flaw detector 13 and the data acquisition card 12 are connected to a computer 14.
[0044] The beneficial effects of adopting the above further technical solution are as follows: The ultrasonic flaw detector is connected to the ultrasonic probe, enabling the ultrasonic probe to excite and receive ultrasonic signals, and obtaining detection signals at different positions during the detection process of the ultrasonic probe; The data acquisition card, connected to the frame and the motion mechanism, obtains the motion information of the ultrasonic probe; The computer is respectively connected to the ultrasonic flaw detector and the data acquisition card, converts the digital ultrasonic signals collected by the data acquisition card into pixel colors, converts the motion information of the ultrasonic probe collected by the data acquisition card into the coordinates of the ultrasonic probe, and obtains a detection image of the test piece to be detected. In the computer, the distance of the ultrasonic probe from the center of the bottom plate is calculated using the value output by the linear encoder, and the rotation angle of the ultrasonic probe is calculated using the value output by the rotary encoder, and the position of the ultrasonic probe is determined in the form of polar coordinates. At the same time, the computer converts the detection signals collected by the ultrasonic probe into pixel values, combines them with the position coordinates of the ultrasonic probe, and realizes ultrasonic detection imaging. The operator needs to further move the ultrasonic probe according to the detection image until a complete detection image is drawn.
[0045] It should be noted that the control and analysis methods of the data acquisition card 12, the ultrasonic flaw detector 13, and the computer 14 are prior arts, and those skilled in the art can easily figure out how to program the computer according to actual needs, which will not be elaborated here.
[0046] As Figures 1 to 3 shown in the figure, further, the connection platform 7 is of a duckbill head structure.
[0047] The beneficial effects of adopting the above further technical solution are as follows: It is convenient for the length moving part to rotate relative to the frame, increasing the versatility of this embodiment.
[0048] As Figures 1 to 3 shown in the figure, further, the length moving part 3 is connected to a hinge structure 11, the hinge structure 11 is connected to a fixture 10, and the ultrasonic probe 9 is installed in the fixture 10.
[0049] The beneficial effects of adopting the above further technical solution are as follows: The ultrasonic probe is connected to the length moving part through the hinge structure, and the attitude of the ultrasonic probe can be adjusted through the hinge structure.
[0050] As Figures 1 to 3 shown in the figure, further, the fixture 10 includes a pair of arc-shaped plates, one end of the pair of arc-shaped plates is hinged, and the other end of the pair of arc-shaped plates is connected by bolts.
[0051] The beneficial effects of adopting the above further technical solution are as follows: It is convenient to stably clamp the ultrasonic probe through a pair of arc-shaped plates, which facilitates the installation and maintenance of the ultrasonic probe.
[0052] As Figures 1 to 3 shown, further, the length moving member 3 is a metal slide bar.
[0053] The beneficial effects of adopting the above further technical solution are as follows: The ultrasonic probe and the positioning device are only connected by a metal slide bar, with a simple structure, good flexibility, and convenient layout.
[0054] Refer to Figure 1 , Figure 1 shows the hardware connection structure of the present invention. The polar coordinate type ultrasonic detection and imaging device of the present invention includes: a frame 1, which is installed on the detection object and provides a reference for the coordinate calculation of the ultrasonic probe 9; a motion mechanism, including an angular motion member 2 and a length motion member 3, the angular motion member 2 is installed on the frame 1 and rotates around the center of the frame 1 as an axis; the length motion member 3 is installed on the angular motion member 2 and moves horizontally along the angular motion member 2; an ultrasonic probe 9, which is installed at the lower part of the front end of the length motion member 3 and moves with the length motion member 3. Through the combined motion of the angular motion member 2 and the length motion member 3, the motion range of the ultrasonic probe 9 can cover the entire surface of the detection specimen. Under the limitation of the motion mechanism, the motion of the ultrasonic probe 9 can be described in a polar coordinate manner, that is, the distance between the ultrasonic probe 9 and the frame 1 and the angle of the ultrasonic probe 9 rotating around the frame 1; an ultrasonic flaw detector 13, which is connected to the ultrasonic probe 9 to enable the ultrasonic probe 9 to generate and receive ultrasonic signals and obtain detection signals at different positions during the detection process of the ultrasonic probe 9; a data acquisition card 12, which is connected to the frame 1 and the motion mechanism to obtain the motion information of the ultrasonic probe 9; a computer 14, which is respectively connected to the ultrasonic flaw detector 13 and the data acquisition card 12, converts the digital ultrasonic signals collected by the data acquisition card 12 into pixel colors, and converts the motion information of the ultrasonic probe 9 collected by the data acquisition card 12 into the coordinates of the ultrasonic probe 9 to obtain a detection image of the detection specimen.
[0055] Refer to Figure 2 , Figure 2The structural diagram of the motion module of the present utility model is shown. The motion module of this embodiment consists of a frame 1, an angular motion member 2, and a linear motion member 3. Among them, the frame 1 of this embodiment includes a bottom plate 4, a plurality of legs 5, and a rotary encoder 6. The bottom plate 4 is a rectangular structural plate with a through groove (the first through hole) at the center. The plurality of legs 5 are respectively installed near the corners of the bottom plate 4, and the rotary encoder 6 is installed at the through hole (the first through hole) of the bottom plate 4. The angular motion member 2 of this embodiment is composed of a connecting platform 7 and a linear encoder 8 with a through hole (the second through hole). The connecting platform of the angular motion member 2 of this embodiment is connected to the frame 1 through a rotating shaft. Among them, the rotary encoder 6 can be connected to the rotating shaft, or the rotary encoder 6 is connected to the connecting platform. The linear motion member 3 of this embodiment is a metal slide bar. The linear motion member 3 of this embodiment is connected to the angular motion member 2 through the through hole (the second through hole) of the linear encoder 8 in the angular motion member 2, so that the rotation axis of the linear encoder 8 coincides with the axis of the rotary encoder 6.
[0056] To increase the versatility of this embodiment, the rotary encoder 6 and the linear encoder 8 do not adopt a horizontal connection method. Referring to the motion mode of a camera monitor, the connecting platform 7 adopts a duckbill head structure, and the duckbill head structure can be composed of two U-shaped structures hinged through a rotating shaft. The connecting platform 7 of the angular motion member 2 is connected to the frame 1 through a rotating shaft.
[0057] See Figure 3 , Figure 3 The structural diagram of the probe mounting structure of the present utility model is shown. The ultrasonic probe 9 of this embodiment is nested in the fixture 10, and the ultrasonic probe 9 is connected to the linear motion member 3 through a hinge structure 11, and the attitude of the ultrasonic probe 9 can be adjusted through the hinge structure 11. The hinge structure 11 can be a hinged structure of two connecting plates, or a hinged structure of a connecting rod and a connecting plate.
[0058] The position of the ultrasonic probe is calculated in polar coordinates. The ultrasonic probe and the positioning device are only connected by a metal slide bar, with a simple structure, good flexibility, and convenient layout. The present utility model can be installed on large structures and in-service structures, and can avoid problems that cannot be achieved by conventional ultrasonic immersion testing. The present utility model has good flexibility and can solve the problem that conventional ultrasonic rigid C-scanning is not suitable for the curvature change of the structure.
[0059] During ultrasonic scanning, the operator manually drags the ultrasonic probe 9 for detection. The movement of the ultrasonic probe 9 drives the movement of the length moving part 3, and the movement of the length moving part 3 drives the movement of the rotary moving part (angle moving part 2). In the computer, the value output by the linear encoder 8 is used to calculate the distance between the ultrasonic probe 9 and the center of the base (bottom plate 4), and the value output by the rotary encoder 6 is used to calculate the rotation angle of the ultrasonic probe 9, so as to determine the position of the ultrasonic probe 9 in the form of polar coordinates. At the same time, the computer converts the detection signal collected by the ultrasonic probe 9 into pixel values and combines them with the position coordinates of the ultrasonic probe 9 to realize ultrasonic detection imaging. The operator needs to further move the ultrasonic probe according to the detection image until a complete detection image is drawn.
[0060] The present utility model positions the ultrasonic probe in the form of polar coordinates, with a simple structure and convenient layout, and it can realize the detection of large structures, in-service structures, and structures with curvature changes.
[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model.
Claims
1. A polar coordinate type ultrasonic detection and imaging device, characterized in that, Comprising: A frame, an angular motion member, a length motion member, and an ultrasonic probe. The bottom of the angular motion member is rotatably mounted on the frame. The length motion member is slidably mounted on the top of the angular motion member. The ultrasonic probe is mounted on the length motion member.
2. The polar coordinate type ultrasonic detection and imaging device according to claim 1, wherein The bottom of the angular motion member is rotatably mounted at the central position of the frame.
3. The polar coordinate type ultrasonic detection and imaging device according to claim 1, wherein The length motion member is horizontally slidably mounted on the top of the angular motion member.
4. A polar coordinate type ultrasonic detection and imaging device according to claim 1, characterized in that, The frame includes: a bottom plate, a plurality of legs, and a rotary encoder. The bottom plate is a rectangular plate structure with a first through hole at the center. The rotary encoder is mounted in the first through hole. The plurality of legs are respectively mounted at the corners of the bottom plate.
5. The polar coordinate type ultrasonic detection imaging device according to claim 4, wherein The angular motion member includes: a connection platform and a linear encoder. The connection platform is connected to the frame through a rotating shaft. The linear encoder is provided with a second through hole. The length motion member is slidably mounted in the second through hole.
6. The polar coordinate type ultrasonic detection and imaging device according to claim 5, wherein, Both the rotary encoder and the linear encoder are connected to a data acquisition card. The ultrasonic probe is connected to an ultrasonic flaw detector. Both the ultrasonic flaw detector and the data acquisition card are connected to a computer.
7. The polar coordinate type ultrasonic detection and imaging device according to claim 5, characterized in that, The connection platform is of a duckbill head structure.
8. The polar coordinate type ultrasonic detection and imaging device according to claim 1, wherein, The length motion member is connected to a hinge structure. The hinge structure is connected to a clamp. The ultrasonic probe is mounted in the clamp.
9. The polar coordinate type ultrasonic detection imaging device according to claim 8, characterized in that, The clamp includes a pair of arc-shaped plates. One end of the pair of arc-shaped plates is hinged, and the other end of the pair of arc-shaped plates is connected by bolts.
10. The polar coordinate type ultrasonic detection imaging device according to claim 1, characterized in that, The length motion member is a metal sliding rod.