CN209877890U - Semi-automatic line width detection device - Google Patents
Semi-automatic line width detection device Download PDFInfo
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- CN209877890U CN209877890U CN201920756573.5U CN201920756573U CN209877890U CN 209877890 U CN209877890 U CN 209877890U CN 201920756573 U CN201920756573 U CN 201920756573U CN 209877890 U CN209877890 U CN 209877890U
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- 238000012545 processing Methods 0.000 claims description 42
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Abstract
The utility model discloses a semi-automatic line width detection device, which comprises a frame, an image uptake subassembly that is used for bearing and fixed PCB controls the platform and can follow Z axle direction reciprocating motion, it is provided with X axle regulation and control mechanism and Y axle regulation and control mechanism to control the platform bottom, X axle regulation and control mechanism installs in the frame, Y axle regulation and control mechanism installs on X axle regulation and control mechanism, it installs on Y axle regulation and control mechanism to control the platform, the image uptake subassembly sets up and controls platform one side, the image uptake subassembly can be to controlling the PCB on the platform and absorb the image, and give the outside host computer with image information feedback. The line width detection device utilizes the mutual matching of the X-axis regulating mechanism and the Y-axis regulating mechanism to control the motion of the console, so that the relative position of the PCB relative to the image shooting assembly is convenient to regulate, and the detection range of the PCB is enlarged. The detection device is simple in structure and can adapt to detection of circuits with different specifications on the PCB; the overall structure is small and exquisite in size, and the problem that existing large-scale detection equipment is not easy to transfer is solved.
Description
Technical Field
The utility model relates to a circuit board processing equipment technical field especially relates to a line width detection device.
Background
In the production process of the PCB, the circuit arranged on the PCB needs to be detected so as to ensure that the impedance of the circuit meets the requirement of electrical characteristics, and the detection of the circuit of the PCB mainly detects the line width.
With the development of the technology, the circuit on the PCB board becomes more and more delicate, because the error is larger with the traditional manual detection method, most of the circuits are analyzed and processed through the picture or video of the acquisition target, however, the size of the machine for acquisition and analysis is larger, the machine is not suitable to be moved at will, the PCB board to be detected is placed on the machine for detection when the detection is carried out, and the circuit is easy to wear and tear for the larger PCB board and is inconvenient to carry.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a line width detection device with simple structure and convenient use.
The utility model provides a technical scheme that its technical problem adopted does:
the utility model provides a semi-automatic line width detection device, includes the frame, is used for bearing and fixes PCB controls the platform and can follow Z axle direction reciprocating motion's image and take the subassembly, it is provided with X axle adjustment and control mechanism and Y axle adjustment and control mechanism to control the platform bottom, X axle adjustment and control mechanism installs in the frame, Y axle adjustment and control mechanism installs on X axle adjustment and control mechanism, it installs on Y axle adjustment and control mechanism to control the platform, the image is taken the subassembly and is being controlled platform one side, and the image is taken the subassembly and can be taken the image to the PCB of controlling the bench to give outside host computer with image information feedback.
As an improvement of the technical scheme, the image shooting assembly comprises a support installed on the rack, a Z-axis rail installed on the support, a fixed seat slidably installed on the Z-axis rail, and a shooting mechanism used for shooting images, wherein the shooting mechanism is installed on the fixed seat, the support is provided with a Z-axis lead screw parallel to the Z-axis rail, the Z-axis lead screw is connected with the fixed seat through a lead screw nut, and the bottom of the Z-axis lead screw is connected with a Z-axis adjusting knob through a reversing gear set.
As an improvement of the technical scheme, the shooting mechanism comprises a CCD camera, a zoom lens and an LED light source, the CCD camera is installed on the fixed seat, the zoom lens is installed at the working end of the CCD camera, and the LED light source is installed below the zoom lens on the fixed seat.
As an improvement of the above technical solution, the image capturing assembly is connected with a detection system, and the detection system includes:
the binarization operation processing module is used for receiving the PCB image information transmitted by the shooting mechanism, and performing binarization operation processing on a target PCB image to generate a binarization image of the target PCB image;
the line width structural element construction module is used for constructing line width structural elements according to a preset line width threshold value;
the opening operation processing module is used for performing morphological opening operation processing on the binary image by adopting the line width structural element to generate an opening operation processing image of the target PCB image;
the first difference operation processing module is used for carrying out difference operation processing on the opening operation processing image and the binarization image to generate a line width detection image of the target PCB image;
and the line width detection result determining module is used for determining the line width detection result of the conducting wire in the target PCB image according to the line width detection image.
As an improvement of the above technical solution, the X-axis adjusting mechanism includes a base mounted on the frame, an X-axis slide rail and an X-axis lead screw, the X-axis lead screw is connected to a driving table through a lead screw nut, the driving table is slidably mounted on the X-axis slide rail, and one end of the X-axis lead screw is provided with an X-axis adjusting knob; and the Y-axis regulating mechanism is arranged on the driving platform.
As an improvement of the technical scheme, the Y-axis regulating mechanism comprises a Y-axis slide rail arranged on the driving platform and a Y-axis lead screw arranged on one side of the Y-axis slide rail, the control platform is slidably arranged on the Y-axis slide rail, the Y-axis lead screw is connected with the control platform through a lead screw nut, and one end of the Y-axis lead screw is provided with a Y-axis regulating knob.
As an improvement of the technical scheme, a transparent slide for flattening the PCB is arranged on the console.
The beneficial effects of the utility model are that:
the line width detection device utilizes the mutual matching of the X-axis regulating mechanism and the Y-axis regulating mechanism to control the motion of the console, so that the relative position of the PCB relative to the image pickup assembly is convenient to regulate, the detection range of the PCB is enlarged, the image pickup assembly is adjustable in the vertical direction, the regulation and control of the distance for picking up the PCB image are convenient, and the requirement on the proper image pickup distance is ensured. The detection device is simple in structure and can adapt to detection of circuits with different specifications on the PCB; because the structure of automatically adjusting the relative position of the PCB to the image shooting assembly is reduced, the overall structure is small and exquisite, and the problem that the existing large-scale detection equipment is not easy to transfer is avoided.
Drawings
The present invention will be further described with reference to the accompanying drawings and specific embodiments, wherein:
fig. 1 is a front view of an embodiment of the present invention;
fig. 2 is a top view of an embodiment of the invention;
fig. 3 is a schematic structural diagram of an image capturing module according to an embodiment of the present invention;
fig. 4 is a schematic partial structure diagram of an embodiment of the present invention.
Detailed Description
Referring to fig. 1 to 4, the utility model discloses a semi-automatic line width detection device, including frame 1, be used for bearing and fixing PCB control platform 2 and can follow Z axle direction reciprocating motion's image capture subassembly 3, control 2 bottoms of platform and be provided with X axle adjustment and control mechanism 4 and Y axle adjustment and control mechanism 5, X axle adjustment and control mechanism 4 installs in frame 1, Y axle adjustment and control mechanism 5 installs on X axle adjustment and control mechanism 4, control platform 2 and install on Y axle adjustment and control mechanism 5, image capture subassembly 3 sets up in controlling 2 one sides of platform, and image capture subassembly 3 can be to controlling the PCB on the platform 2 and take the image to give the outside host computer with image information feedback. In this application, the outside host computer can be master control PC, and master control PC's main function is to carry out operations such as comparison analysis with the image information that image capture component 3 output, and of course master control PC still is connected with the external equipment such as display, is convenient for improve whole controllability.
Further referring to fig. 1 and 2, the image capturing assembly 3 includes a bracket 31 mounted on the frame 1, a Z-axis rail 32 mounted on the bracket 31, a fixing seat 33 slidably mounted on the Z-axis rail 32, and a capturing mechanism 34 for capturing an image, wherein the capturing mechanism 34 is mounted on the fixing seat 33, the bracket 31 is provided with a Z-axis lead screw 35 parallel to the Z-axis rail 32, the Z-axis lead screw 35 is connected with the fixing seat 33 through a lead screw nut, and the bottom of the Z-axis lead screw 35 is connected with a Z-axis adjusting knob 36 through a reversing gear set. The relative distance between the whole shooting mechanism 34 and the PCB on the console 2 can be adjusted by the Z-axis adjusting knob 36, so that the controllability of image shooting is improved, and the operation and the control are convenient.
Referring to fig. 3, the capturing mechanism 34 includes a CCD camera 341, a zoom lens 342, and an LED light source 343, the CCD camera 341 is mounted on the fixing base 33, the zoom lens 342 is mounted at the working end of the CCD camera 341, and the LED light source 343 is mounted on the fixing base 33 below the zoom lens 342. The relative position of the LED light source 343 and the zoom lens 342 is adjustable, so that the whole irradiation area can be adjusted conveniently for different PCBs, and the controllability is improved.
In addition, in the present application, in order to better process the image information, the image capturing component 3 is connected with a detection system, and the detection system is arranged in the main control PC and connected through a general data interface. Wherein the detection system comprises: the system comprises a binarization operation processing module, a line width structural element construction module, an opening operation processing module, a first difference operation processing module and a line width detection result determination module, wherein the binarization operation processing module is used for receiving PCB image information transmitted by an acquisition mechanism 34 and carrying out binarization operation processing on a target PCB image to generate a binarization image of the target PCB image; the line width structural element construction module is used for constructing line width structural elements according to a preset line width threshold value; the opening operation processing module is used for performing morphological opening operation processing on the binary image by adopting the line width structural element to generate an opening operation processing image of the target PCB image; the first difference operation processing module is used for carrying out difference operation processing on the opening operation processing image and the binarization image to generate a line width detection image of the target PCB image; and the line width detection result determining module is used for determining the line width detection result of the conducting wire in the target PCB image according to the line width detection image.
Further, in order to determine whether the conducting wire in the target PCB image has the line width violation defect and the position of the line width violation defect, a structural element required in the detection process needs to be constructed according to a preset line width threshold, and herein, the structural element required in the process of detecting the line width of the conducting wire in the target PCB image is defined as the line width structural element.
The size of the line width structural element is set to be the size of a standard line width, the size of the standard line width is determined according to a preset line width threshold and the resolution of an image acquisition device in the detection system, and herein, the resolution of the image acquisition device in the detection system is defined as a preset resolution in the detection system. The shape of the line width structural element can be set at random in theory, but because the wiring direction of the line in the PCB is usually horizontal, vertical or diagonal,
the line spacing structural element building module is specifically configured to: determining a value of a second reference dimension of the line spacing structural element according to a preset line spacing threshold value and the following formula;
K2＝(D2/25.4)/R；
judging whether the value of the second reference size is an odd number or not, and if the value of the second reference size is the odd number, determining the value of the second reference size as the value of the size of the line space structural element; or, if the value of the second reference size is an even number, determining a largest odd number smaller than the even number as the value of the size of the line-space structural element; wherein K2 represents a second reference dimension in pixels for the line-space structuring element; d2 represents the preset line distance threshold in mil; r represents a preset resolution in the detection system in microns per pixel.
The line distance detection result determining module is specifically configured to: judging whether a second foreground target exists in the line distance detection image or not; and if a second foreground target exists in the line distance detection image, determining that a lead in the target PCB image has a line distance violation defect, and determining the position coordinate of the second foreground target in the line distance detection image as the position coordinate of the line distance violation defect in the target PCB image.
In this document, after the morphological open operation processing is performed on the binary image by using the line width structural element, the generated image is defined as an open operation processing image of the target PCB image, and after the morphological open operation processing is performed on the binary image, all white stripe-shaped areas with width violation defects in the binary image become black in the open operation processing image. The specific operation is to construct a first neighborhood including the pixel point for each pixel point in the binary image, that is, construct a first operation window including the pixel point, and the size of the first neighborhood (the first operation window) is the same as the size of the line width structural element. Traversing the whole binary image from pixel points positioned at a first row index position and a first column index position in the binary image, performing gray value processing on each pixel point, defining the currently processed pixel point as a first target pixel point during specific processing, judging whether a pixel point with a gray value of 0 exists in a first neighborhood corresponding to the first target pixel point, if the gray value of at least one pixel point in the first neighborhood is 0, setting the gray value of the first target pixel point to be 0, generating a new image after traversing the whole binary image, and defining the new image generated in the process as a first corrosion operation processing image of the target PCB image. In the first corrosion operation processing image, aiming at each pixel point, a second neighborhood containing the pixel point is constructed, namely a second operation window containing the pixel point is constructed, and the size of the second neighborhood (the second operation window) is the same as that of the line width structural element.
Traversing the whole first corrosion operation processing image from the pixel points positioned at the first row index and the first column index in the first corrosion operation processing image, performing gray value processing on each pixel point, defining the currently processed pixel point as a second target pixel point during specific processing, judging whether a second neighborhood corresponding to the second target pixel point has a pixel point with a gray value of 255, if the gray value of at least one pixel point in the second neighborhood is 255, setting the gray value of the second target pixel point to be 255, and generating an open operation processing image of the target PCB image after traversing the whole first corrosion operation processing image.
Referring to fig. 1, 2 and 4, in the present application, the X-axis adjusting and controlling mechanism 4 includes a base 41 installed on the frame 1, an X-axis slide rail 42 disposed on the base 41, and an X-axis lead screw 43, the X-axis lead screw 43 is connected to a driving table 44 through a lead screw nut, the driving table 44 is slidably installed on the X-axis slide rail 42, and an X-axis adjusting knob is disposed at one end of the X-axis lead screw 43; the Y-axis adjusting mechanism 5 is mounted on the driving stage 44.
Further, the Y-axis regulating and controlling mechanism 5 includes a Y-axis slide rail 51 installed on the driving table 44 and a Y-axis lead screw 52 arranged on one side of the Y-axis slide rail 51, the console 2 is slidably installed on the Y-axis slide rail 51, the Y-axis lead screw 52 is connected with the console 2 through a lead screw nut, and one end of the Y-axis lead screw 52 is provided with a Y-axis adjusting knob. And a transparent slide for flattening the PCB is arranged on the console 2. Y axle adjustment mechanism 5 makes things convenient for operating personnel to distribute well with setting up of X axle adjustment mechanism 4, is convenient for adjust PCB for the position that absorbs subassembly 3, and convenient to use has improved the nature controlled, and because transmission parts is simple simultaneously, overall structure can be done relatively lightly, and the size is compared traditional large-scale check out test set and is had obvious advantage.
The X-axis regulating mechanism 4 and the Y-axis regulating mechanism 5 are matched with each other to control the movement of the console 2, so that the relative position of the PCB relative to the image pickup assembly 3 is regulated and controlled, the detection range of the PCB is enlarged, the image pickup assembly 3 is adjustable in the vertical direction, the regulation and control of the distance for picking up the PCB image are facilitated, and the requirement on the proper image pickup distance is ensured. The detection device is simple in structure and can adapt to detection of circuits with different specifications on the PCB; because the structure of automatically adjusting the relative position of the PCB in the image shooting component 3 is reduced, the overall structure is small and exquisite, and the problem that the existing large-scale detection equipment is not easy to transfer is avoided.
The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should be all included in the protection scope of the present invention as long as the technical effects are achieved by any of the same or similar means.
Claims (7)
1. The utility model provides a semi-automatic line width detection device which characterized in that: including the frame, be used for bearing and fixed PCB control the platform and can follow Z axle direction reciprocating motion's image pickup subassembly, it is provided with X axle adjustment and control mechanism and Y axle adjustment and control mechanism to control a bottom, X axle adjustment and control mechanism installs in the frame, Y axle adjustment and control mechanism installs on X axle adjustment and control mechanism, it installs on Y axle adjustment and control mechanism to control the platform, the image pickup subassembly sets up and controls platform one side, and the image pickup subassembly can be to controlling the PCB on the platform and take the image to give the outside host computer with image information feedback.
2. A semi-automatic line width detection device according to claim 1, characterized in that: the image shooting assembly comprises a support installed on the rack, a Z-axis rail installed on the support, a fixing seat slidably installed on the Z-axis rail and a shooting mechanism used for shooting images, the shooting mechanism is installed on the fixing seat, the support is provided with a Z-axis lead screw parallel to the Z-axis rail, the Z-axis lead screw is connected with the fixing seat through a lead screw nut, and the bottom of the Z-axis lead screw is connected with a Z-axis adjusting knob through a reversing gear set.
3. A semi-automatic line width detection device according to claim 2, characterized in that: the shooting mechanism comprises a CCD camera, a zoom lens and an LED light source, the CCD camera is installed on the fixing base, the zoom lens is installed at the working end of the CCD camera, and the LED light source is installed below the fixing base and located on the zoom lens.
4. The apparatus according to claim 2, wherein the image capturing assembly is connected to a detection system, the detection system comprises:
the binarization operation processing module is used for receiving the PCB image information transmitted by the shooting mechanism, and performing binarization operation processing on a target PCB image to generate a binarization image of the target PCB image;
the line width structural element construction module is used for constructing line width structural elements according to a preset line width threshold value;
the opening operation processing module is used for performing morphological opening operation processing on the binary image by adopting the line width structural element to generate an opening operation processing image of the target PCB image;
the first difference operation processing module is used for carrying out difference operation processing on the opening operation processing image and the binarization image to generate a line width detection image of the target PCB image;
and the line width detection result determining module is used for determining the line width detection result of the conducting wire in the target PCB image according to the line width detection image.
5. The semi-automatic line width detection device according to claim 1, wherein the X-axis adjusting mechanism comprises a base mounted on the frame, an X-axis slide rail and an X-axis lead screw, the X-axis lead screw is arranged on the base, the X-axis lead screw is connected with a driving table through a lead screw nut, the driving table is slidably mounted on the X-axis slide rail, and one end of the X-axis lead screw is provided with an X-axis adjusting knob; and the Y-axis regulating mechanism is arranged on the driving platform.
6. The semi-automatic line width detection device according to claim 5, wherein the Y-axis adjusting mechanism comprises a Y-axis slide rail mounted on the driving platform and a Y-axis lead screw arranged on one side of the Y-axis slide rail, the console is slidably mounted on the Y-axis slide rail, the Y-axis lead screw is connected with the console through a lead screw nut, and one end of the Y-axis lead screw is provided with a Y-axis adjusting knob.
7. The apparatus of claim 1, wherein a transparent slide for flattening the PCB is disposed on the console.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920756573.5U CN209877890U (en) | 2019-05-22 | 2019-05-22 | Semi-automatic line width detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920756573.5U CN209877890U (en) | 2019-05-22 | 2019-05-22 | Semi-automatic line width detection device |
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| CN209877890U true CN209877890U (en) | 2019-12-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113014776A (en) * | 2021-03-09 | 2021-06-22 | 杭州舜立光电科技有限公司 | Intelligent camera |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113014776A (en) * | 2021-03-09 | 2021-06-22 | 杭州舜立光电科技有限公司 | Intelligent camera |
| CN113014776B (en) * | 2021-03-09 | 2022-08-02 | 杭州舜立光电科技有限公司 | Intelligent camera |
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