CN112082946A - Automatic detection system and method thereof - Google Patents

Automatic detection system and method thereof Download PDF

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Publication number
CN112082946A
CN112082946A CN201910509406.5A CN201910509406A CN112082946A CN 112082946 A CN112082946 A CN 112082946A CN 201910509406 A CN201910509406 A CN 201910509406A CN 112082946 A CN112082946 A CN 112082946A
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distance
production line
detected
state picture
detection area
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陈剑威
贾博渊
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Shaoxing Technology Co ltd
Tul Corp
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Shaoxing Technology Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • G01N2021/0181Memory or computer-assisted visual determination

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

An automated detection system, comprising: a production line, which comprises a sensing area and a detection area; at least one sensor for sensing at least one object to be detected conveyed by the production line; at least one light supplement element arranged above and/or beside the production line in the detection area; the first photographic device is arranged above the production line at a first distance in the detection area and acquires an upper state picture of the at least one object to be detected; the second photographic device is arranged on the side edge of the production line at a second distance in the detection area and acquires a side edge state picture of the at least one object to be detected; and the computer device receives the upper state picture and the side state picture and carries out image identification on the upper state picture and the side state picture.

Description

Automatic detection system and method thereof
Technical Field
The invention relates to an automatic detection system and a detection method, in particular to an automatic detection system and a method for detecting the installation state of elements of various electronic products by image recognition.
Background
The display card is one of the most basic components of PC device, and is used to convert the display information required by computer system to drive display, provide progressive or interlaced scanning signal to display and control the correct display of display. Furthermore, a Field Programmable Gate Array (FPGA) is a product developed on the basis of Programmable logic devices such as PAL, GAL, CPLD, etc. It is a semi-customized circuit in the field of application-specific integrated circuits, which not only solves the deficiency of fully customized circuits, but also overcomes the limitation of gate circuits of the original programmable logic device.
Both the display card and the FPGA generate high temperature during operation, which causes temperature increase of internal components, especially the computing chip, and if the heat dissipation components of the display card and the FPGA are not installed, the display card and the FPGA are thermally down due to the high temperature. Therefore, in the conventional manufacturing process of display cards and FPGAs, it is usually determined whether the heat dissipation components of each display card and FPGA are correctly mounted by manual inspection. However, in the manual detection method, a missing view may occur, and a defective product may not be detected. In addition, the manual inspection method results in an extended inspection time and thus a reduced productivity.
For the above reasons, how to invent an automatic detection system and a detection method, which can quickly and effectively automatically detect a display card and an FPGA, is a problem to be solved.
Disclosure of Invention
To achieve the above object, the present invention provides an automatic detection system, comprising: a production line, which comprises a sensing area and a detection area; the sensor is arranged at a position close to the production line at the sensing area and senses at least one object to be detected conveyed by the production line; at least one light supplement element arranged above and/or beside the production line in the detection area; the first photographic device is arranged above the production line at a first distance in the detection area and acquires an upper state picture of the at least one object to be detected; the second photographic device is arranged on the side edge of the production line at a second distance in the detection area and acquires a side edge state picture of the at least one object to be detected; and a computer device electrically connected to the at least one sensor, the at least one light supplement element, the first camera device and the second camera device, wherein the computer device receives the upper status picture and the side status picture and performs image recognition on the upper status picture and the side status picture.
Moreover, the automatic detection system of the present invention further includes a robot arm electrically connected to the computer device, the robot arm is disposed at a side of the production line in the detection area, the second camera device is disposed on the robot arm, and the second camera device is kept at the second distance from the at least one object to be detected by the movement of the robot arm.
Preferably, the object to be tested is a display card or a field programmable logic gate array, the upper status frame is a fan status frame of the display card or the field programmable logic gate array, and the side status frame is an installation status frame between a chip of the display card or the field programmable logic gate array and a heat sink.
Preferably, the first distance and the second distance are any value of 10-22.99 cm.
Preferably, the first distance and the second distance are 15 cm.
In another aspect, the present invention also provides an automated detection method, comprising the following steps: conveying at least one object to be detected by a production line, wherein the production line comprises a sensing area and a detection area; the at least one sensor arranged in the sensing area senses the at least one object to be detected, and when the at least one sensor senses the at least one object to be detected, at least one light supplementing element is started, wherein the at least one light supplementing element is arranged above and/or on the side of the detection area; capturing an upper state picture of the at least one object to be detected by a first photographic device arranged at a first distance above the production line in the detection area; capturing a side state picture of the at least one object to be detected by a second photographic device arranged at a second distance from the side of the production line in the detection area; and receiving the upper state picture and the side state picture by a computer device, and performing image recognition on the upper state picture and the side state picture, wherein the computer device is electrically connected to the at least one sensor, the at least one light supplementing element, the first photographing device and the second photographing device.
Preferably, the object to be tested is a display card or a field programmable logic gate array, the upper status frame is a fan status frame of the display card or the field programmable logic gate array, and the side status frame is an installation status frame between a chip of the display card or the field programmable logic gate array and a heat sink.
Preferably, after the computer device receives the installation status frame, the computer device sets a boundary frame in the installation status frame, and performs regression analysis according to the gap amount in the boundary frame and the length-width ratio of the boundary frame to determine whether the installation between the chip and the heat sink bar is correct and whether the coating of the heat sink paste between the chip and the heat sink bar is complete.
Preferably, the first distance and the second distance are any value of 10-22.99 cm.
Preferably, the first distance and the second distance are 15 cm.
Drawings
The various aspects of the present invention and the particular features and advantages thereof will become more readily apparent to those having ordinary skill in the art upon reading the following detailed description and upon viewing the accompanying drawings in which:
FIG. 1 is a schematic top view illustrating the structure of an automated inspection system according to one embodiment of the invention;
FIG. 2 is a schematic diagram illustrating the structure of a detection region according to an embodiment of the present invention;
FIG. 3A is a diagram illustrating a picture captured by a first camera according to an embodiment of the invention;
FIG. 3B is a diagram illustrating a picture captured by a second camera according to an embodiment of the invention;
FIG. 4A is a diagram illustrating a picture captured by a first camera according to another embodiment of the invention;
FIG. 4B is a diagram illustrating a picture captured by a second camera according to another embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating the structure of a detection zone according to yet another embodiment of the present invention; and
FIG. 6 is a flow chart illustrating an automated detection method in accordance with one embodiment of the present invention.
Wherein the reference numerals are as follows:
2 automatic detection system
10 production line
20 inductor
30 light supplement element
40 first photographing device
50 second photographing device
60 object to be measured, display card
70 boundary frame
101 induction zone
103 detection zone
501 mechanical arm
601 fan
603 wafer
605 heat sink and sink
607 space
D1 first distance
D2 second distance
S10-S50 steps
Detailed Description
The following embodiments of the present invention will be described in more detail with reference to the drawings and the accompanying drawings, so that those skilled in the art can implement the invention after studying the specification.
Fig. 1 is a schematic top view for illustrating the structure of an automated inspection system according to an embodiment of the invention. Referring to fig. 1, in an embodiment of the invention, an automatic inspection system 1 includes a production line 10, at least one sensor 20, at least one fill-in light element 30, a first camera device 40, a second camera device 50, and a computer device (not shown).
The production line 10 includes a sensing region 101 and a detection region 103. At least one sensor 20 is disposed adjacent to the production line 10 at the sensing zone 101, such as above, to the side, etc. of the production line 10, and is shown disposed above the production line 10 in fig. 1. The at least one sensor 20 may sense at least one object 60 to be tested conveyed by the production line 10, wherein, in the sensing area 101 of the production line 10, the at least one sensor 20 may be disposed above or beside the production line 10 by at least one rack or rail (not shown), and the number of the sensors 20 may be more than one. For example, the sensor 20 may be an infrared sensor, and when at least one object 60 passes through the sensor 20, the sensor 20 may sense the at least one object 60.
The at least one light supplement element 30 is disposed above and/or beside the detection area 103, the first photographing device 40 is disposed above the production line 10 at a first distance in the detection area 103, and the second photographing device 50 is disposed beside the production line 10 at a second distance in the detection area 103. In other words, the first camera 40 and the second camera 50 can be selectively disposed above and beside the production line 10 in cooperation with a light supplement element 30 to further obtain a status picture of at least one object 60 entering the detection area 103.
The computer device is electrically connected to the sensor 20, the at least one light supplement element 30, the first camera device 40 and the second camera device 50, and when the sensor 20 senses the object 60 to be detected, a message is transmitted to notify the computer device, so that the computer device starts the at least one light supplement element 30, the first camera device 40 and the second camera device 50, and the first camera device 40 and the second camera device 50 acquire a status picture of the object 60 to be detected entering the detection area 103. Furthermore, the computer device can receive the status frames acquired by the first camera device 40 and the second camera device 50, and perform image recognition on the status frames to determine whether the component mounting of the object 60 is correct.
Fig. 2 is a schematic diagram illustrating a structure of a detection region according to an embodiment of the invention. Referring to fig. 1 and 2, the first photographing device 40 is disposed above the production line 10 by a first distance D1 in the detection area 103, and the second photographing device 50 is disposed at a side of the production line 10 by a second distance D2 in the detection area 103. After the object 60 to be measured passes through the sensor 20 and enters the detection region 103, the first photographing device 40 disposed above the production line 10 can supplement light by the light supplement element 30 and obtain a top state picture of the object 60 to be measured, and the second photographing device 50 disposed at the side of the production line 10 can supplement light by the light supplement element 30 and obtain a side state picture of the object 60 to be measured.
It should be noted that the first distance D1 and the second distance D2 are very important for the present invention, and if the values of the first distance D1 and the second distance D2 are incorrectly set, the images captured by the first photographing device 40 and the second photographing device 50 are not clear, and the computer device cannot recognize the images. Therefore, in one embodiment of the present invention, the first distance D1 and the second distance D2 are set to any value of 10-22.99 cm, respectively, and in a preferred embodiment of the present invention, the first distance D1 and the second distance D2 are both set to 15 cm, so that the first photographing device 40 and the second photographing device 50 can obtain the best status picture.
On the other hand, the present invention can integrate the display tracking information of the two cameras by integrating the coordinates of the first camera 40 and the second camera 50 to determine the position of the object 60.
Fig. 3A is a schematic view illustrating a picture captured by the first camera according to an embodiment of the invention. Referring to fig. 3A, in an embodiment of the invention, the object 60 to be tested may be a display card or an on-site programmable logic gate array, in fig. 3A, the display card is taken as an example, and fig. 3A shows that the first camera 40 obtains an upper status frame of the object 60 to be tested, the upper status frame is a fan 601 status frame of the display card 60, and the computer device can perform image recognition on the fan 601 status frame after receiving the fan 601 status frame to determine whether the status of the fan 601 is good, for example, whether there is a defect such as a damage or the like.
Fig. 3B is a schematic diagram illustrating a picture obtained by the second photographing device according to an embodiment of the invention. Referring to fig. 3B, fig. 3B shows a side state image of the object 60 to be tested, which is obtained by the second camera 50, the side state image is an installation state image between the chip 603 and the heat sink row 605 of the display card 60, and the computer device can perform image recognition on the installation state image between the chip 603 and the heat sink row 605 after receiving the installation state image between the chip 603 and the heat sink row 605, so as to determine whether the installation state between the chip 603 and the heat sink row 605 is good, for example, whether the heat dissipation paste is not coated or whether a gap exists between the chip 603 and the heat sink row 605.
To be more specific, when the computer device performs image recognition on the mounting status frame between the chip 603 and the heat sink row 605, the computer device sets a boundary frame 70 in the mounting status frame, and performs regression analysis according to the gap amount in the boundary frame 70 and the length-width ratio of the boundary frame 70 to determine whether the mounting between the chip 603 and the heat sink row 605 is correct and whether the coating of the heat sink paste between the chip 603 and the heat sink row 605 is complete. The length-width ratio of the boundary frame 70 is preset in the computer device, the gap amount in the boundary frame 70 means the size of the gap between the wafer 603 and the heat sink row 605, if there is a gap between the wafer 603 and the heat sink row 605, the light can pass through the gap, so that the image of the gap is captured, the computer device can determine the size of the gap according to the length-width ratio of the boundary frame 70, and if the size of the gap exceeds a preset value, the computer device is determined as a defective product. It can be seen that fig. 3B shows a frame that is determined as good for the chip 603 and the heat sink row 605, because no gap is identified between the chip 603 and the heat sink row 605.
In addition, the computer device can calculate the plane position and coordinates of the object 60 to be measured on the production line 10 by using the first camera device 40 and the second camera device 50, so as to set the boundary frame 70 in the image acquired by the second camera device 50.
Fig. 4A is a schematic view illustrating a picture captured by a first camera according to another embodiment of the invention. Referring to fig. 4A, in another embodiment of the present invention, the object 60 to be tested can be a display card or an on-site programmable logic gate array, in fig. 4A, the display card is taken as an example, and fig. 4A shows that the first camera 40 obtains an upper status frame of the object 60 to be tested, the upper status frame is a fan 601 status frame of the display card 60, and the computer device can perform image recognition on the fan 601 status frame after receiving the fan 601 status frame to determine whether the status of the fan 601 is good, for example, whether there is a defect such as a damage or the like.
Fig. 4B is a schematic diagram illustrating a picture obtained by a second photographing device according to another embodiment of the invention. Referring to fig. 4B, fig. 4B shows a side state image of the object 60 to be tested, which is obtained by the second camera 50, the side state image is an installation state image between the chip 603 and the heat sink row 605 of the display card 60, and in the installation state image, a gap 607 is formed between the chip 603 and the heat sink row 605. In this embodiment, the light passes through the gap 607, so that the image of the gap 607 is captured, the computer device can determine the size of the gap 607 according to the length-width ratio of the boundary frame 70, and if the size of the gap 607 exceeds a predetermined value, it is determined as a defective product, in an embodiment of the present invention, the predetermined value of the gap is 2mm, and if the size of the gap 607 exceeds 2mm, it indicates that the chip 603 and the heat sink row 605 are not correctly mounted or the thickness of the heat sink paste is insufficient, and therefore, it is determined as a defective product after the image recognition of the computer device.
It should be understood that, in order to more clearly illustrate the image recognition of the present invention, fig. 3A-4B only show the bounding box 70 and the captured frames in the bounding box 70.
Fig. 5 is a schematic diagram illustrating a structure of a detection area according to another embodiment of the invention. Referring to fig. 1 and 5, in another embodiment of the present invention, the automated inspection system 1 further includes a robot 501, the robot 501 is electrically connected to the computer device, the robot 501 is disposed at a side of the production line 10 in the inspection area 103, and the second photographing device 50 is disposed on the robot 501. In this way, the second photographing device 50 can keep the second distance D2 from the object 60 to be tested by the movement of the robot 501. For example, after the object 60 to be tested on the production line 10 is integrated by the coordinates of the first photographing device 40 and the second photographing device 50 and is positioned, the position information can be transmitted to the computer device, and the robot 501 is controlled by the computer device to keep the distance between the second photographing device 50 and the object 60 to be tested at the second distance D2. It should be understood that, in other embodiments of the present invention, the robot 501 may be replaced by a linear slide (not shown), and the second photographing device 50 is disposed on the linear slide.
On the other hand, in other embodiments of the present invention, the computer device may further connect to a database (not shown), when the computer device receives the pictures obtained by the first camera device 40 and the second camera device 50, the pictures determined as defective products may be stored in the database, and the deep image learning may be performed by using a plurality of defective pictures, and the deep image learning portion may perform the training learning of the video sample of the display card through the object detection based on the deep learning (YOLOv3) and perform the detection application.
FIG. 6 is a flowchart illustrating an automated inspection method according to an embodiment of the invention. Referring to fig. 6, the automatic detection method of the present invention includes steps S10-S50, wherein step S10 is: conveying at least one object to be detected by a production line, wherein the production line comprises a sensing area and a detection area; step S20 is: the at least one sensor arranged in the sensing area senses the at least one object to be detected, and when the at least one sensor senses the at least one object to be detected, at least one light supplementing element is started, wherein the at least one light supplementing element is arranged above and/or on the side of the detection area; step S30 is: capturing an upper state picture of the at least one object to be detected by a first photographic device arranged at a first distance above the production line in the detection area; step S40 is: capturing a side state picture of the at least one object to be detected by a second photographic device arranged at a second distance from the side of the production line in the detection area; and step S50 is: and receiving the upper state picture and the side state picture by a computer device, and performing image recognition on the upper state picture and the side state picture, wherein the computer device is electrically connected to the at least one sensor, the at least one light supplementing element, the first photographing device and the second photographing device.
On the other hand, in the automatic inspection method of the present invention, the object to be inspected can be a display card or a field programmable logic gate array, the upper status frame is a fan status frame of the display card or the field programmable logic gate array, and the side status frame is an installation status frame between a chip of the display card or the field programmable logic gate array and a heat sink.
Furthermore, with the schematic diagram of fig. 4B, after the computer device receives the installation status picture, the computer device sets a boundary frame 70 in the installation status picture, and performs regression analysis according to the gap amount of the air gap 607 in the boundary frame 70 and the length-width ratio of the boundary frame 70 to determine whether the installation between the chip 603 and the heat sink row 605 is correct and whether the coating of the heat sink paste between the chip 603 and the heat sink row 605 is complete.
It should be noted that, referring to fig. 2 again, the first distance D1 and the second distance D2 are very important for the present invention, and if the values of the first distance D1 and the second distance D2 are incorrectly set, the images captured by the first photographing device 40 and the second photographing device 50 are not clear, and thus the computer device cannot perform image recognition. Therefore, in the automatic detection method of the present invention, the first distance D1 and the second distance D2 are set to any value of 10-22.99 cm, respectively, and in the preferred embodiment of the present invention, the first distance D1 and the second distance D2 are both set to 15 cm, so that the first photographing device 40 and the second photographing device 50 can obtain the best status picture.
In addition, in the automatic detection method of the present invention, an integrated screen can be displayed in the computer device to display the positioning judgment and detection result of the display card on the production line, and send a signal to give the detection that the green light is on, the red light is not on, and all the captured images, the detection data and the detection result are stored in a database connected with the computer device.
In summary, the present invention successfully provides an automatic detection system and a method thereof. The automatic detection system and the method thereof have the following technical characteristics and advantages: 1. two photographic devices are erected in the production line, and the position of the object to be detected is calculated through coordinate integration of the two photographic devices, so that integration of display tracking information of the two photographic devices is achieved. 2. A boundary frame is arranged in the acquired image, and regression analysis is carried out by the gap amount and the length-width ratio in the boundary frame to judge whether the installation between the chip of the display card and the heat dissipation row is correct or not and whether the heat dissipation paste is coated or not.
The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting thereof, since any modification or variation thereof within the spirit of the invention is intended to be covered thereby.

Claims (10)

1. An automated inspection system, comprising:
a production line, which comprises a sensing area and a detection area;
at least one sensor, which is arranged at a sensing area and is adjacent to the position of the production line, and senses at least one object to be detected conveyed by the production line;
at least one light supplement element arranged above and/or beside the production line in the detection area;
the first photographic device is arranged above the production line at a first distance in the detection area and acquires an upper state picture of the at least one object to be detected;
the second photographic device is arranged on the side edge of the production line at a second distance in the detection area and acquires a side edge state picture of the at least one object to be detected; and
and the computer device is electrically connected to the at least one sensor, the at least one light supplementing element, the first photographic device and the second photographic device, receives the upper state picture and the side state picture and performs image identification on the upper state picture and the side state picture.
2. The automated inspection system of claim 1, further comprising a robot electrically connected to the computer device and disposed at a side of the production line in the inspection area, wherein the second camera is disposed on the robot and is moved to maintain the second distance from the at least one object to be inspected.
3. The automatic detecting system of claim 1, wherein the object to be detected is a display card or an FPGA, the upper status frame is a fan status frame of the display card or the FPGA, and the side status frame is an installation status frame between a chip of the display card or the FPGA and a heat sink.
4. The automated inspection system of claim 1, wherein the first distance and the second distance are any of 10-22.99 cm.
5. The automated inspection system of claim 4, wherein the first distance and the second distance are 15 cm.
6. An automated detection method, comprising the steps of:
conveying at least one object to be detected by a production line, wherein the production line comprises a sensing area and a detection area;
the at least one sensor arranged in the sensing area senses the at least one object to be detected, and when the at least one sensor senses the at least one object to be detected, at least one light supplementing element is started, wherein the at least one light supplementing element is arranged above and/or on the side of the detection area;
capturing an upper state picture of the at least one object to be detected by a first photographic device arranged at a first distance above the production line in the detection area;
capturing a side state picture of the at least one object to be detected by a second photographic device arranged at a second distance from the side of the production line in the detection area; and
and receiving the upper state picture and the side state picture by a computer device, and performing image recognition on the upper state picture and the side state picture, wherein the computer device is electrically connected to the at least one sensor, the at least one light supplementing element, the first photographing device and the second photographing device.
7. The automatic detection method as claimed in claim 6, wherein the object to be detected is a display card or a field programmable logic gate array, the upper status frame is a fan status frame of the display card or the field programmable logic gate array, and the side status frame is an installation status frame between a chip of the display card or the field programmable logic gate array and a heat sink.
8. The automatic detection method as claimed in claim 7, wherein the computer device sets a boundary frame in the installation status frame after receiving the installation status frame, and performs regression analysis based on the gap amount in the boundary frame and the length-width ratio of the boundary frame to determine whether the installation between the chip and the heat sink bar is correct and whether the coating of the heat dissipation paste between the chip and the heat sink bar is complete.
9. The automated inspection method of claim 6, wherein the first distance and the second distance are any one of 10-22.99 cm.
10. The automated inspection method of claim 9, wherein the first distance and the second distance are 15 cm.
CN201910509406.5A 2019-06-13 2019-06-13 Automatic detection system and method thereof Pending CN112082946A (en)

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