CN113092493A - Steel mesh detection system and method - Google Patents
Steel mesh detection system and method Download PDFInfo
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- CN113092493A CN113092493A CN202110214346.1A CN202110214346A CN113092493A CN 113092493 A CN113092493 A CN 113092493A CN 202110214346 A CN202110214346 A CN 202110214346A CN 113092493 A CN113092493 A CN 113092493A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 120
- 239000010959 steel Substances 0.000 title claims abstract description 120
- 238000001514 detection method Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 6
- 238000003384 imaging method Methods 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000002441 reversible effect Effects 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 abstract description 5
- 229910000679 solder Inorganic materials 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/94—Investigating contamination, e.g. dust
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention relates to a steel mesh detection system and a method, wherein the steel mesh detection system comprises a surface light source, an imaging plate, an image acquisition device and a control device; the surface light source is arranged above the steel mesh to be detected and used for emitting longitudinal parallel light towards the steel mesh to be detected; the imaging plate is arranged below the steel mesh to be detected, is made of photochromic materials and is used for forming a light-transmitting pattern, the light-transmitting pattern is a pattern corresponding to a light-transmitting area of the steel mesh to be detected, and the light-transmitting area is formed by unblocked parts of meshes of the steel mesh to be detected; the image acquisition device is used for acquiring the light-transmitting pattern; the control device is used for judging whether the light-transmitting pattern is consistent with a preset mesh pattern or not, and if so, cleaning the meshes of the steel mesh to be detected, wherein the mesh pattern is a pattern formed by the meshes of the steel mesh to be detected; the steel mesh detection system provided by the invention is used for detecting whether the meshes of the steel mesh to be detected are clean or not, the detection efficiency is high, and the detection result accuracy is high.
Description
Technical Field
The invention relates to the technical field of steel mesh detection, in particular to a steel mesh detection system and a steel mesh detection method.
Background
The steel mesh is an important tool for solder paste skip printing and is a steel sheet provided with meshes corresponding to a pad of a printed circuit board. As a reusable tool, the steel mesh needs to be cleaned after being used so as to clean the solder paste attached to the steel mesh, and the steel mesh is convenient to use next time. In order to ensure that the solder paste in the mesh holes of the steel mesh is thoroughly cleaned, the manual visual inspection is generally carried out after the cleaning is finished, namely, the mesh holes are manually and visually inspected to see whether the mesh holes are clean or not facing the fluorescent lamp, and the detection efficiency is low by the mode.
Disclosure of Invention
The present invention provides a steel mesh detection system and a steel mesh detection method, aiming at the above-mentioned defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
in one aspect, a steel mesh detection system is provided, wherein,
the steel mesh detection system comprises a surface light source, an imaging plate, an image acquisition device and a control device;
the surface light source and the image acquisition device are both electrically connected with and controlled by the control device;
the surface light source is arranged above the steel mesh to be detected and used for emitting longitudinal parallel light towards the steel mesh to be detected;
the imaging plate is arranged below the steel mesh to be detected, is made of photochromic materials and is used for forming a light-transmitting pattern, the light-transmitting pattern is a pattern corresponding to a light-transmitting area of the steel mesh to be detected, and the light-transmitting area is formed by unblocked parts of meshes of the steel mesh to be detected;
the image acquisition device is used for acquiring the light-transmitting pattern;
the control device is used for judging whether the light-transmitting pattern is consistent with a preset mesh pattern or not, if so, the mesh of the steel mesh to be detected is cleaned, wherein the mesh pattern is a pattern formed by the mesh of the steel mesh to be detected.
The steel mesh detection system further comprises a prompting device; the prompting device is electrically connected with and controlled by the control device; and when the light-transmitting pattern is judged to be inconsistent with the mesh pattern, the control device is used for controlling the prompt device to give out an unqualified prompt.
According to the steel mesh detection system, when the light-transmitting pattern is judged to be consistent with the mesh pattern, the control device is used for controlling the prompt device to give out a qualified prompt.
The steel mesh detection system provided by the invention is characterized in that the photochromic material is a reversible photochromic material.
On the other hand, a steel mesh detection method is provided, which is based on the steel mesh detection system, wherein the steel mesh detection method comprises the following steps:
the surface light source emits longitudinal parallel light towards the steel mesh to be detected, the parallel light penetrates through a light transmission area of the steel mesh to be detected and irradiates the imaging plate, and the irradiated part of the imaging plate changes color so as to form the light transmission pattern;
the image acquisition device acquires the light-transmitting pattern;
and the control device judges whether the light-transmitting pattern is consistent with the mesh pattern, and if so, the mesh of the steel mesh to be detected is cleaned.
The steel mesh detection method provided by the invention further comprises the following steps of:
and when the light-transmitting pattern is judged to be inconsistent with the mesh pattern, the control device controls the prompting device to give out unqualified prompt.
The steel mesh detection method provided by the invention further comprises the following steps of:
and when the light-transmitting pattern is judged to be consistent with the mesh pattern, the control device controls the prompting device to send out a qualified prompt.
The steel mesh detection method is characterized in that the photochromic material is a reversible photochromic material.
The invention has the beneficial effects that: when the steel mesh detection system provided by the invention is used for detecting whether the meshes of the steel mesh to be detected are clean, the working principle is as follows:
the method comprises the following steps that a surface light source is utilized to emit longitudinal parallel light towards a steel mesh to be detected, the parallel light penetrates through a light transmission area of the steel mesh to be detected and irradiates an imaging plate, and the irradiated part of the imaging plate changes color to form a light transmission pattern;
collecting a light-transmitting pattern by using an image collecting device;
and judging whether the light-transmitting pattern is consistent with the mesh pattern by using the control device, and if so, cleaning the mesh of the steel mesh to be detected.
Therefore, the steel mesh detection system provided by the invention is used for detecting whether the meshes of the steel mesh to be detected are clean or not, the detection efficiency is high, and the detection result accuracy is high.
In addition, the control device compares the light-transmitting pattern with the mesh pattern, and the light-transmitting pattern and the mesh pattern are not related to the absolute positions of a plurality of meshes (if the number of meshes is multiple) on the steel plate to be detected and are only related to the relative positions of the plurality of meshes, so that the steel mesh detection system provided by the invention has low requirement on the position of the steel mesh to be detected when in detection, and is more convenient to operate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the accompanying drawings:
FIG. 1 is a schematic structural diagram of a steel mesh detection system according to a first embodiment of the present invention;
fig. 2 is a flowchart of a steel mesh detection method according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.
Example one
As shown in fig. 1, a steel mesh detection system according to a first embodiment of the present invention includes a surface light source 1, an imaging plate 3, an image capturing device 4, and a control device 5; the surface light source 1 and the image acquisition device 4 are both electrically connected with and controlled by the control device 5;
the surface light source 1 is arranged above the steel mesh 2 to be detected and used for emitting longitudinal parallel light towards the steel mesh 2 to be detected;
the imaging plate 3 is arranged below the steel mesh 2 to be detected, is made of photochromic materials and is used for forming a light-transmitting pattern, the light-transmitting pattern is a pattern corresponding to a light-transmitting area of the steel mesh 2 to be detected, and the light-transmitting area is formed by unblocked parts of meshes of the steel mesh 2 to be detected;
the image acquisition device 4 is used for acquiring the light-transmitting pattern;
and the control device 5 is used for judging whether the light-transmitting pattern is consistent with a preset mesh pattern or not, and if so, cleaning the meshes of the steel mesh 2 to be detected, wherein the mesh pattern is a pattern formed by the meshes of the steel mesh 2 to be detected.
When the steel mesh detection system provided by the invention is used for detecting whether the meshes of the steel mesh 2 to be detected are clean, the working principle is as follows:
the surface light source 1 is utilized to emit longitudinal parallel light towards the steel mesh 2 to be detected, the parallel light passes through a light transmission area of the steel mesh 2 to be detected and irradiates the imaging plate 3, and the irradiated part of the imaging plate 3 changes color to form a light transmission pattern;
collecting a light-transmitting pattern by using an image collecting device 4;
and judging whether the light-transmitting pattern is consistent with the mesh pattern by using the control device 5, and if so, cleaning the meshes of the steel mesh 2 to be detected.
Therefore, the steel mesh detection system provided by the invention is used for detecting whether the meshes of the steel mesh 2 to be detected are clean or not, the detection efficiency is high, and the detection result accuracy is high.
In addition, the control device 5 of the invention compares the light-transmitting pattern with the mesh pattern, and the light-transmitting pattern and the mesh pattern are not related to the absolute positions of a plurality of meshes (if the number of meshes is multiple) on the steel plate to be detected, but are only related to the relative positions of the plurality of meshes, so that the steel mesh detection system provided by the invention has low requirement on the position of the steel mesh 2 to be detected when in detection, and is more convenient to operate.
It should be noted that:
the surface light source 1 can be an existing surface light source, such as an LED surface light source 1;
secondly, the imaging plate 3 is made of photochromic materials, the part irradiated by the parallel light can change color, the part not irradiated by the parallel light can not change color, when the parallel light irradiates the steel mesh 2 to be detected, the light corresponding to the part of the mesh of the steel mesh 2 to be detected which is not blocked can pass through the part of the mesh which is not blocked and irradiate on the imaging plate 3, the light corresponding to the part of the mesh which is not opened and the part of the mesh which is blocked can not pass through (the blocked part of the mesh is formed by being blocked by the tin paste in most cases, and the tin paste is light-tight, so the light can not pass through the blocked part of the mesh), and the light which passes through is longitudinal and parallel to each other, so the light-transmitting patterns completely correspond to the part of the mesh of the steel mesh 2 to be detected;
thirdly, the image acquisition device 4 can be an existing device, such as a camera;
fourthly, when the mesh of the steel mesh 2 to be detected is cleaned, the mesh of the steel mesh 2 to be detected is not provided with a blocked part, and the light transmission pattern is consistent with the mesh pattern, so that the control device 5 can determine that the mesh of the steel mesh 2 to be detected is cleaned when judging that the light transmission pattern is consistent with the mesh pattern.
Preferably, the device also comprises a prompting device 6; the prompting device 6 is electrically connected with and controlled by the control device 5; and when the light-transmitting pattern is judged to be inconsistent with the mesh pattern, the control device 5 is used for controlling the prompting device 6 to give out a disqualification prompt.
When the light-transmitting pattern is inconsistent with the mesh pattern, it is indicated that the steel mesh 2 to be detected is not cleaned, and at the moment, the control device 5 controls the prompt device 6 to give an unqualified prompt to prompt an operator to clean the steel mesh 2 to be detected again.
Preferably, the control device 5 is used for controlling the prompting device 6 to give a qualified prompt when the light-transmitting pattern is judged to be consistent with the mesh pattern.
When the light-transmitting pattern is consistent with the mesh pattern, the steel mesh 2 to be detected is clean, at the moment, the control device 5 controls the prompt device 6 to give a qualified prompt to prompt an operator that the steel mesh 2 to be detected is clean and can be put into next use.
Preferably, the photochromic material is a reversible photochromic material.
Reversible photochromic material can resume original colour by oneself when not being shone, adopts the imaging plate 3 that reversible photochromic material made, can reuse, need not to detect at every turn and all changes, has greatly saved check-out time, has improved detection efficiency.
It should be noted that: the components of the reversible photochromic material can be (by mass percent):
example two
As shown in fig. 2, a second embodiment of the present invention provides a steel mesh detection method, based on the steel mesh detection system, the steel mesh detection method includes the following steps:
s201: the surface light source emits longitudinal parallel light towards the steel mesh to be detected, the parallel light passes through a light transmission area of the steel mesh to be detected and irradiates the imaging plate, and the irradiated part of the imaging plate changes color to form a light transmission pattern;
s202: collecting a light-transmitting pattern by an image collecting device;
s203: the control device judges whether the light-transmitting pattern is consistent with the mesh pattern, and if so, the mesh of the steel mesh to be detected is cleaned.
When whether the meshes of the steel mesh to be detected are clean or not is detected, the surface light source is utilized to emit longitudinal parallel light towards the steel mesh to be detected, the parallel light penetrates through a light transmission area of the steel mesh to be detected and irradiates on the imaging plate, the irradiated part of the imaging plate changes color to form a light transmission pattern, the image acquisition device is utilized to acquire the light transmission pattern, the control device is utilized to judge whether the light transmission pattern is consistent with the meshes, if so, the meshes of the steel mesh to be detected are clean and visible, the steel mesh detection method provided by the invention is utilized to detect whether the meshes of the steel mesh to be detected are clean or not, and the detection result.
Preferably, the steel mesh detection method further comprises the following steps:
when the light-transmitting pattern is judged to be inconsistent with the mesh pattern, the control device controls the prompting device to give out unqualified prompt.
Preferably, the steel mesh detection method further comprises the following steps:
when the light-transmitting pattern is judged to be consistent with the mesh pattern, the control device controls the prompting device to send out a qualified prompt.
Preferably, the photochromic material is a reversible photochromic material.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (8)
1. A steel mesh detection system is characterized in that,
the steel mesh detection system comprises a surface light source, an imaging plate, an image acquisition device and a control device;
the surface light source and the image acquisition device are both electrically connected with and controlled by the control device;
the surface light source is arranged above the steel mesh to be detected and used for emitting longitudinal parallel light towards the steel mesh to be detected;
the imaging plate is arranged below the steel mesh to be detected, is made of photochromic materials and is used for forming a light-transmitting pattern, the light-transmitting pattern is a pattern corresponding to a light-transmitting area of the steel mesh to be detected, and the light-transmitting area is formed by unblocked parts of meshes of the steel mesh to be detected;
the image acquisition device is used for acquiring the light-transmitting pattern;
the control device is used for judging whether the light-transmitting pattern is consistent with a preset mesh pattern or not, if so, the mesh of the steel mesh to be detected is cleaned, wherein the mesh pattern is a pattern formed by the mesh of the steel mesh to be detected.
2. The steel mesh detection system according to claim 1, further comprising a prompting device; the prompting device is electrically connected with and controlled by the control device; and when the light-transmitting pattern is judged to be inconsistent with the mesh pattern, the control device is used for controlling the prompt device to give out an unqualified prompt.
3. The steel mesh detection system according to claim 2, wherein the control device is configured to control the prompt device to issue a pass prompt when the light-transmitting pattern is determined to be consistent with the mesh pattern.
4. The steel mesh detection system of claim 1, wherein the photochromic material is a reversible photochromic material.
5. A steel mesh detection method, based on the steel mesh detection system of any one of claims 1 to 4, wherein the steel mesh detection method comprises the following steps:
the surface light source emits longitudinal parallel light towards the steel mesh to be detected, the parallel light penetrates through a light transmission area of the steel mesh to be detected and irradiates the imaging plate, and the irradiated part of the imaging plate changes color so as to form the light transmission pattern;
the image acquisition device acquires the light-transmitting pattern;
and the control device judges whether the light-transmitting pattern is consistent with the mesh pattern, and if so, the mesh of the steel mesh to be detected is cleaned.
6. The steel mesh detecting method according to claim 5, further comprising the steps of:
and when the light-transmitting pattern is judged to be inconsistent with the mesh pattern, the control device controls the prompting device to give out unqualified prompt.
7. The steel mesh detecting method according to claim 5, further comprising the steps of:
and when the light-transmitting pattern is judged to be consistent with the mesh pattern, the control device controls the prompting device to send out a qualified prompt.
8. The steel mesh detection method according to claim 5, wherein the photochromic material is a reversible photochromic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110214346.1A CN113092493A (en) | 2021-02-25 | 2021-02-25 | Steel mesh detection system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110214346.1A CN113092493A (en) | 2021-02-25 | 2021-02-25 | Steel mesh detection system and method |
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| CN113092493A true CN113092493A (en) | 2021-07-09 |
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|---|---|---|---|---|
| CN202735264U (en) * | 2012-08-27 | 2013-02-13 | 罗艺 | Detection device for chip-mounting tools |
| CN202837747U (en) * | 2012-10-26 | 2013-03-27 | 京东方科技集团股份有限公司 | Light leak detection base plate and light leak detection device |
| CN204008498U (en) * | 2014-07-10 | 2014-12-10 | 珠海格力电器股份有限公司 | Printing steel mesh detection device |
| CN104385775A (en) * | 2014-11-24 | 2015-03-04 | 东莞市凯格精密机械有限公司 | Solder paste printing equipment and method for detecting printing stencil blocked holes |
| CN107505318A (en) * | 2017-07-21 | 2017-12-22 | 芜湖雅葆轩电子科技股份有限公司 | PCBA board steel mesh printing opacity method of testing |
| CN208621532U (en) * | 2018-06-04 | 2019-03-19 | 上海旭统精密电子有限公司 | A kind of applied blue light detection steel mesh device |
-
2021
- 2021-02-25 CN CN202110214346.1A patent/CN113092493A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202735264U (en) * | 2012-08-27 | 2013-02-13 | 罗艺 | Detection device for chip-mounting tools |
| CN202837747U (en) * | 2012-10-26 | 2013-03-27 | 京东方科技集团股份有限公司 | Light leak detection base plate and light leak detection device |
| CN204008498U (en) * | 2014-07-10 | 2014-12-10 | 珠海格力电器股份有限公司 | Printing steel mesh detection device |
| CN104385775A (en) * | 2014-11-24 | 2015-03-04 | 东莞市凯格精密机械有限公司 | Solder paste printing equipment and method for detecting printing stencil blocked holes |
| CN107505318A (en) * | 2017-07-21 | 2017-12-22 | 芜湖雅葆轩电子科技股份有限公司 | PCBA board steel mesh printing opacity method of testing |
| CN208621532U (en) * | 2018-06-04 | 2019-03-19 | 上海旭统精密电子有限公司 | A kind of applied blue light detection steel mesh device |
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Application publication date: 20210709 |