TW201416664A - Detecting system for electronic components on circuit board and method thereof - Google Patents

Abstract

A detecting system for electronic components on circuit board and a method thereof are provided. A standard image with correction points and standard areas is generated. A circuit board image which is being detected is captured. The circuit board image is corrected by the correction points. Match areas of the circuit board image which are being corrected are found by the standard areas of the standard image. The standard areas and the match areas are processed and matched by electronic component types. The processed match area which is not matched with the standard area is then processed to generate a prompt message including standard area and manufacture number of the circuit board. Therefore, the efficiency of improving detection efficiency of electronic component on circuit board may be achieved.

Description

Detection system and method for electronic components on circuit board

A detection system and method thereof, and more particularly to a detection system and method for electronic components on a circuit board on a production line.

The detection method of the traditional circuit board mostly adopts the manual visual inspection method, which is to use the detected circuit board to manually detect the electronic components on the circuit board one by one, that is, when the circuit board to be detected is sent into the detection system, and By capturing the alignment target on the circuit board by the camera function in the detection system, the image of the acquired alignment target is printed or displayed on the display, and finally the measurement tool is manually used to manually list the target. The target image printed or displayed is detected, and the circuit board to be tested is judged to be a good board or a seesaw according to the detection result.

The detection method of the foregoing circuit board not only has poor working efficiency, but also makes it difficult to ensure the accuracy of detection. Therefore, in the detection circuit board program, the stencil is often not caused by the stencil, and the slab is greatly induced in subsequent applications. Loss.

With the advancement of technology, the detection system of the circuit board can use the motor to drive the circuit board to be tested into the system, and display the image of the alignment target through the color display to provide manpower savings.

However, although the foregoing detection method improves the consumption of the conventional manpower, it is still necessary to manually detect the target image to determine whether the circuit board to be tested is a good board or a seesaw according to the detection result. Therefore, there is still no set of circuit board detection methods for the inspectors that have high precision, high speed, and automation, humanization, and easy operation.

In summary, it can be seen that the prior art has existed on existing circuit boards for a long time. The detection method of electronic components is inefficient, so it is necessary to propose improved technical means to solve this problem.

In view of the prior art, there is a problem that the detection method of the electronic components on the existing circuit board is inefficient, and the present invention discloses a detection system for an electronic component on a circuit board and a method thereof, wherein: the detection of the electronic components on the circuit board disclosed in the present invention The system is used for detection in a production line, and includes: a standard image module, an image capture module, an image correction module, an image processing module, an image comparison module, a recording module, and a prompt module. .

The standard image module is used to pre-capture standard images of a standard circuit board, and establish two calibration points in the standard image, establish at least one standard area, and an electronic component type corresponding to the standard area; the image capturing module is The image capture module is used to capture the image of the circuit board when the production line enters the detection system and is positioned by the production line. The image correction module is used to find the correction of the calibration image in the standard image. The feature points are based on the correction points and the feature points to calculate the translation matrix and the rotation matrix to correct the circuit board image; the image processing module finds the corresponding alignment in the corrected circuit board image according to the standard area. The area and the image processing specified by the standard area and the comparison area according to the type of the electronic component; the image comparison module is an image processing result that specifies the standard area and the comparison area, and selects the matching condition according to the type of the electronic component to process the image. The result is compared; the recording module is used when the standard area and the comparison area image processing result are inconsistent Standard production number recording region of the circuit board; and a prompt module when the module corresponding to the recording region of the recording standard production number of the circuit board, suggesting prompt message generating module is used.

The method for detecting electronic components on a circuit board disclosed in the present invention is a detection method used in a production line, which comprises the following steps: first, pre-capture standard images of a standard circuit board, and establish two calibration points in the standard image. Establishing at least one standard area and an electronic component type corresponding to the standard area; then, when the circuit board having the production serial number is positioned by the production line for detection, the board image is captured; and then, the board image is found and standard The feature points corresponding to the correction points in the image, and calculating the translation matrix and the rotation matrix according to the correction points and the feature points to correct the circuit board image; and then finding corresponding correspondences in the corrected circuit board image according to the standard area The comparison area, and the image processing specified by the standard area and the comparison area according to the type of the electronic component; then, the image processing result of the standard area and the comparison area is specified, and the comparison condition is selected according to the type of the electronic component. Performing an alignment; then, comparing the image processing results of the standard area and the comparison area When the character, corresponding to the production number for the standard recording area of the circuit board; Finally, when the standard recording area corresponding to the production number of the circuit board, generating a prompt message.

The system and method disclosed by the present invention are as above, and the difference from the prior art is that the present invention pre-establishes a standard image having a calibration point and a standard area, and then extracts a board image to be detected, and performs a circuit according to the correction point. The image correction of the board image can find the corresponding comparison area in the corrected circuit board image according to the standard area, and perform image processing specified by the standard area and the comparison area according to the type of the electronic component, and compare the standard area and the comparison area. The area performs the specified image processing result, and compares the image processing results according to the electronic component type selection comparison condition. When the standard area and the comparison area image processing result are inconsistent, the corresponding standard area and the circuit board are correspondingly recorded. Production serial number, and when corresponding to the standard area and board Production serial number, generate a prompt message.

Through the above technical means, the present invention can achieve the technical effect of improving the detection efficiency of electronic components on the circuit board.

The embodiments of the present invention will be described in detail below with reference to the drawings and embodiments, so that the application of the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.

First, the detection system of the electronic component on the circuit board of the present invention will be described first. Please refer to FIG. 1 and FIG. 1 is a block diagram showing the detection system of the electronic component on the circuit board of the present invention.

The detection system of the electronic component on the circuit board disclosed in the invention is used for detecting in the production line, and comprises: a standard image module 11, an image capturing module 12, an image correcting module 13, and an image processing module. The group 14, the image matching module 15, the recording module 16, and the prompting module 17.

First, the tester can first use the standard image module 11 of the detection system to capture the standard image of the standard circuit board through the image capture device of the detection system (the standard image is measured in pixels), and the standard circuit board is tested. The electronic components on the standard circuit board are determined to have no problem, and the standard circuit boards, such as the motherboard, the display card, the sound card, the expansion card, etc., are merely illustrative here, and the invention is not limited thereto. The scope of application.

After the standard image module 11 captures the standard image of the standard circuit board, two calibration points (ie, pixel coordinates for establishing the calibration point) can be established in the standard image, and the calibration points are, for example, screw holes and standard circuit boards. The vertices, etc., are merely illustrative here, and are not intended to limit the scope of application of the present invention, and the correction points are used to provide subsequent detection. When the board image captured is used for correction.

After the standard image module 11 captures the standard image of the standard circuit board, at least one standard area (ie, the pixel coordinates of the standard area) and the electronic component type corresponding to the standard area may be established in the standard image. The area also contains the area where the electronic component needs to be detected, and the electronic component type is, for example, a capacitor, a socket, a heat dissipating component, a chip, a processor, etc., which are merely exemplified herein, and are not intended to limit the application of the present invention. category.

Then, the circuit board that needs to be detected with the production serial number is placed on the production line, and the production line is similar to the conveying device, which will drive the circuit board placed on the production line to move, and when the circuit board is driven by the production line, the detection system is The image capturing module 12 of the detecting system can capture the circuit board through the image capturing device of the detecting system when the image capturing module 12 captures the incomplete circuit board when capturing the image of the circuit board. The image (the board image is also in units of pixels), and the above-mentioned circuit board is, for example, a motherboard, a display card, a sound card, an expansion card, etc., which are merely illustrative, and are not intended to limit the present invention. The scope of application.

Then, although the board will be positioned on the production line, the board may still be slightly offset or rotated, and the board image captured by the image capturing module 12 will be generated with the standard image. The error, and the error caused by the board image and the standard image may cause a detection error, so the image correction module 13 needs to perform the correction of the board image.

The image correcting module 13 can find the feature points corresponding to the correction points in the standard image on the board image (that is, the screw holes, the vertices of the circuit board, etc., which are merely exemplified herein, and are not limited thereto. The application scope of the present invention is characterized in that the pixel coordinates of the calibration point are searched within a certain range of the pixel coordinates in the image of the circuit board. Find to find the feature points similar to the correction point feature, and find the feature points to find the pixel coordinates of the board image, and calculate the translation matrix and rotation matrix according to the correction points and feature points, please refer to The existing image correction technology, and the technique of performing image correction through the two correction points should be included in the content of the present invention. The present invention will not be described herein again, and after the image correction module 13 calculates the translation matrix and the rotation matrix, The board image correction can be approximated to the standard image to reduce the error that the board image will produce with the standard image.

Then, the image processing module 14 finds a corresponding comparison area in the corrected circuit board image according to the standard area, and performs image processing specified by the standard area and the comparison area according to the electronic component type, and the image processing may include Grayscale processing, spatial filtering, frequency filtering, image restoration, image color analysis, wavelet processing, morphological processing, image segmentation, and image quantitative analysis.

Specifically, if the electronic component type specified by the standard area and the comparison area is “capacitance”, the image processing module 14 can select gray scale processing and image color analysis, thereby being used in the standard area and the comparison area. Finding the outline of the electronic component and the color distribution of the image within the outline of the electronic component are merely illustrative and are not intended to limit the scope of application of the present invention.

After the image processing module 14 performs image processing according to the type of the electronic component in the standard area and the comparison area, the image comparison module 15 can select the comparison condition according to the type of the electronic component to match the standard area. The alignment area is compared with the specified image processing result, and the above alignment conditions may include the outline of the electronic component, the geometric condition of the electronic component (for example, radius, length, etc.) and the color configuration of the electronic component, only By way of example, it is not intended to limit the scope of application of the invention.

The image comparison module 15 presets an error value (pre-set by the system). When the comparison result of the image processing result specified by the standard area and the comparison area does not exceed the error value, the standard area and the comparison are performed. The comparison result of the specified image processing result in the area is consistent. When the comparison result of the image processing result specified by the standard area and the comparison area exceeds the error value, the standard area and the comparison area perform the specified image processing result. The result is not consistent.

Then, the recording module 16 can be used to record the standard area and the production serial number of the circuit board when the image comparison module 15 does not match the image processing result of the standard area and the comparison area, thereby knowing the specific circuit. The specific electronic component of the board (through the serial number of the production) has an error. The errors that occur in the electronic component are, for example, no electronic components, incorrect electronic components, incorrect orientation of the electronic components, etc. By way of example, it is not intended to limit the scope of application of the invention.

When the recording module 16 records the standard area and the production serial number of the circuit board, the prompting module 17 can simultaneously generate a prompt message, wherein the prompt message includes the comparison area and the production serial number of the circuit board, and the detecting personnel can pass through the data center. The instant data monitoring status and the prompt message generated by the detection system can quickly detect the error of the electronic components on the circuit board, and can quickly detect the electronic components on the circuit board.

Next, the operation mode and flow of the present invention will be described below by way of an embodiment. The following embodiments will be described with reference to "first figure" and "second figure", and "second figure" is shown as A flow chart of a method for detecting electronic components on a circuit board of the present invention.

Please also refer to "Figure 3" and "Figure 4", "Figure 3" The schematic diagram of the architecture of the detection system of the electronic components on the circuit board of the present invention; FIG. 4 is a schematic diagram showing the standard image of the electronic component detection on the circuit board of the present invention.

The tester can first use the standard image module 11 of the detection system to capture the standard image 21 of the standard circuit board through the image capturing device 18 of the detection system (the standard image 21 is a pixel as a calculation unit), and the standard circuit board passes through There are no problems with the electronic components on the standard board determined after the test.

After the standard image module 11 captures the standard image 21 of the standard circuit board, the first correction point 22 and the second correction point 23 can be established in the standard image 21 (ie, the first correction point 22 and the second are established). The pixel coordinates of the correction point 23 are used, and the correction point is used to correct the captured circuit board image 21 for subsequent detection (step 110).

After the standard image module 11 captures the standard image 21 of the standard circuit board, the standard area 24 can be established in the standard image 21 (that is, the pixel coordinates of the standard area 24 are established), and the electronic corresponding to the standard area 24 The component type, in the embodiment, the electronic component type here is “capacitance” (step 110), and the electronic component type “capacitance” is merely exemplified herein, and is not limited to the application scope of the invention. The component type can also be "resistance", "switch", etc.

Next, please refer to "Figure 3" to "5A", and "5A" is a schematic diagram of the circuit board image of the electronic component detection on the circuit board of the present invention.

The circuit board 31 to be detected having the production serial number "AB00543" is placed on the production line 41, and the production line 41, which is similar to the conveying device, drives the circuit board 31 placed on the production line 41 to move to the left, and when the circuit The board 31 is driven by the production line 41 into the detection system and positioned (to avoid the image capture module 12 capturing the incomplete circuit board 31 when capturing the board image 32), the detection system The image capture module 12 can capture the circuit board image 32 through the image capture device 18 of the detection system (the circuit board image 32 is also in pixels) (step 120).

Then, although the circuit board 31 is positioned on the production line 41, the circuit board 31 may still be slightly offset or rotated, and the circuit board image 32 captured by the image capturing module 12 will An error occurs with the standard image 21, and the error caused by the board image 32 and the standard image 21 may cause a detection error, so the image correction module 13 needs to perform the correction of the board image 32.

The image correcting module 13 can find the first feature point 33 corresponding to the first correction point 22 and the second correction point 23 in the standard image 21 and the first feature point 34 on the board image 32, and the first feature point 33 And the first feature point 34 searches for a certain range of the pixel coordinates in the circuit board image 32 according to the pixel coordinates of the first correction point 22 and the second correction point 23, respectively, to find the first correction point 22 and the first The first feature point 33 and the first feature point 34 having similar features are corrected by the second correction point 23, and the first feature point 33 and the first feature point 34 are found to find the pixel coordinates of the board image 32.

Then, the translation matrix and the rotation matrix can be calculated according to the first calibration point 22 and the second calibration point 23, and the first feature point 33 and the first feature point 34. Please refer to the existing image correction technology and pass the second correction point. The technique for performing image correction should be included in the content of the present invention, and the present invention will not be described again herein. After the image correcting module 13 calculates the translation matrix and the rotation matrix, the circuit board image 32 can be corrected and restored to the standard image. 21 approximation to reduce the error that the board image 32 will produce with the standard image 21 (step 130). In "5A", the error of the board image 32 and the standard image 21 is shown in a more exaggerated manner. In fact, the error between the board image 32 and the standard image 21 is not like the gap in "5A". This is for illustrative purposes only and is not intended to limit the scope of application of the invention.

Next, please refer to "3", "4th" and "5B", and "5B" is a schematic diagram of the circuit board image correction result of the electronic component detection on the circuit board of the present invention.

It is assumed that the result of the board image 32 corrected by the translation matrix and the rotation matrix is as shown in "5B", and the distance A of the first correction point 22 to the second correction point 23 is first calculated, and then the first feature point is calculated. 33 to the distance B of the first feature point 34.

When the error between the distance A and the distance B does not exceed the preset value, it is determined that there is no relative displacement between the circuit board 31 and/or the image capturing device 18, and subsequent detection can be performed.

When the error between the distance A and the distance B exceeds a preset value, it is determined that a relative displacement occurs between the circuit board 31 and/or the image capturing device 18, and an error warning is required, and an error warning is issued. At the same time, subsequent detection is stopped to avoid subsequent detection of all occurrences of errors on the board 31.

In the "Fig. 5B" diagram, the error between the distance A and the distance B exceeds the preset value, and an error warning is issued and the subsequent detection is stopped.

Next, please refer to "6A" and "6B", and "6A" is a schematic diagram of the standard area image processing result of electronic component detection on the circuit board of the present invention; "Fig. 6B" The schematic diagram of the image processing result of the comparison area of the electronic component detection on the circuit board of the present invention.

The image processing module 14 finds the corresponding alignment area 35 in the corrected circuit board image 32 according to the standard area 24.

Then, since the electronic component type corresponding to the standard area 24 is “capacitance”, the image processing module 14 can select gray scale processing and image color analysis on the standard area. 24 and the comparison area 35 for image processing (step 140), the standard area 24 and the comparison area 35 image processing results, please refer to "6A map" and "6B map", respectively, can be in the standard area 24 and the ratio The contour of the electronic component and the color distribution of the image within the contour of the electronic component are found for region 35.

Then, the image matching module 15 can select the matching condition according to the electronic component type as “capacitance” as “the geometric condition of the electronic component” and “the color configuration of the electronic component”, and perform the standard region 24 and the comparison region 35. The specified image processing result alignment (step 150), in the embodiment, the alignment of the standard area 24 with the comparison area 35 is consistent.

Then, the recording module 16 can be used to correspond to the recording standard area 24 and the production serial number of the circuit board as "AB00543" when the image matching module 15 does not match the image processing result of the standard area 24 and the comparison area 35. (Step 160), whereby an error occurs in a particular electronic component (through the standard area 24 or the alignment area 35) of a particular circuit board (through the production number "AB00543").

When the recording module 16 corresponds to the recording standard area 24 and the production serial number of the circuit board is "AB00543", the prompting module 17 can simultaneously generate a prompt message (step 170), wherein the prompt message includes the standard area 24 and the circuit board 31. The production serial number is “AB00543”, and the tester can quickly monitor the electronic components on the circuit board 31 by using the data center to monitor the status and receive the prompt information generated by the detection system. The effect of detecting electronic components on the circuit board 31.

In summary, it can be seen that the difference between the present invention and the prior art is that the present invention pre-establishes a standard image having a calibration point and a standard area, and then extracts a board image to be detected, and performs a board image according to the correction point. Image correction, ie According to the standard area, the corresponding comparison area is found in the corrected circuit board image, and the image processing specified by the standard area and the comparison area is performed according to the type of the electronic component, and the image processing result of the standard area and the comparison area is specified. According to the electronic component type, the comparison condition is used to compare the image processing results. When the standard area and the comparison area image processing result are inconsistent, the corresponding serial number of the standard area and the circuit board is recorded, and the corresponding record is recorded. The standard area and the production serial number of the board generate a prompt message.

The technical method can solve the problem that the detection method of the electronic components on the existing circuit board in the prior art has low efficiency, thereby achieving the technical effect of improving the detection efficiency of the electronic components on the circuit board.

While the embodiments of the present invention have been described above, the above description is not intended to limit the scope of the invention. Any changes in the form and details of the embodiments may be made without departing from the spirit and scope of the invention. The scope of the invention is to be determined by the scope of the appended claims.

11‧‧‧Standard Image Module

12‧‧‧Image capture module

13‧‧‧Image Correction Module

14‧‧‧Image Processing Module

15‧‧‧Image comparison module

16‧‧‧recording module

17‧‧‧Tips module

18‧‧‧Image capture device

21‧‧‧Standard imagery

22‧‧‧First calibration point

23‧‧‧Second correction point

24‧‧‧Standard area

31‧‧‧ boards

32‧‧‧Board image

33‧‧‧ first feature point

34‧‧‧Second feature points

35‧‧‧ comparison area

41‧‧‧Production line

Step 110‧‧‧ Pre-capture standard images of standard boards and in standard images Establishing two calibration points, establishing at least one standard area, and electronic component types corresponding to the standard area

Step 120‧‧‧ Capture the board image when the board with the production serial number is positioned by the production line for inspection

Step 130‧‧‧ Find the feature points corresponding to the correction points in the standard image on the board image, and calculate the translation matrix and the rotation matrix according to the correction points and the feature points to correct the board image

Step 140‧‧‧ Find the corresponding comparison area in the corrected circuit board image according to the standard area, and perform image processing specified by the standard area and the comparison area according to the type of the electronic component

Step 150‧‧‧Specify the image processing results of the standard area and the comparison area, and compare the image processing results according to the electronic component type

Step 160‧‧‧ When the comparison between the standard area and the comparison area image processing result is used, the production serial number corresponding to the recording standard area and the circuit board is used.

Step 170‧‧‧ Generate a reminder message when recording the serial number of the standard area and the board

1 is a block diagram of a detection system for electronic components on a circuit board of the present invention.

FIG. 2 is a flow chart showing a method for detecting electronic components on a circuit board of the present invention.

FIG. 3 is a schematic diagram showing the architecture of the detection system of the electronic component on the circuit board of the present invention.

FIG. 4 is a schematic view showing a standard image of electronic component detection on the circuit board of the present invention.

FIG. 5A is a schematic diagram of a circuit board image of the electronic component detection on the circuit board of the present invention.

FIG. 5B is a circuit board image of the electronic component detection on the circuit board of the present invention Schematic diagram of calibration results

FIG. 6A is a schematic diagram showing the result of standard area image processing of electronic component detection on the circuit board of the present invention.

FIG. 6B is a schematic diagram showing the result of the comparison of the image processing of the electronic component on the circuit board of the present invention.

11‧‧‧Standard Image Module

12‧‧‧Image capture module

13‧‧‧Image Correction Module

14‧‧‧Image Processing Module

15‧‧‧Image comparison module

16‧‧‧recording module

17‧‧‧Tips module

Claims (10)

A detection system for electronic components on a circuit board, the detection system being used for detection in a production line, comprising: a standard image module for pre-capturing a standard image of a standard circuit board, and Establishing two calibration points in the image, establishing at least one standard area, and an electronic component type corresponding to the standard area; an image capturing module, when a circuit board having a production serial number enters the detection system and is positioned by the production line The image capture module is configured to capture a circuit board image; and an image correction module is configured to find feature points corresponding to the correction points in the standard image on the circuit board image. And calculating, according to the correction point and the feature point, a translation matrix and a rotation matrix to correct the image of the circuit board; and an image processing module, according to the standard area, the corrected image of the circuit board Finding a corresponding alignment area, and performing image processing specified by the standard area and the comparison area according to the electronic component type; an image comparison module, the label Performing the specified image processing result on the area and the comparison area, selecting the comparison condition to compare the image processing result according to the electronic component type; and a recording module, when the standard area and the comparison area image When the processing result is inconsistent, the production serial number corresponding to the standard area and the circuit board is correspondingly recorded; and a prompting module, when the recording module corresponds to recording the standard area and the circuit board The production serial number is used to generate a prompt message. The detection system for an electronic component on a circuit board according to the first aspect of the invention, wherein the image processing comprises grayscale processing, spatial filtering, frequency filtering, image restoration, image color analysis, wavelet processing, morphology processing, Image segmentation and image quantitative analysis. The detection system for an electronic component on a circuit board according to the first aspect of the invention, wherein the image comparison module selects a comparison condition according to the electronic component type, and compares the image processing result with a comparison condition including a contour. , geometry and color configuration. The detection system for electronic components on a circuit board according to claim 1, wherein the standard area and the image processing result of the comparison area are inconsistent when the standard area and the comparison area are If the image processing result exceeds the error value, the comparison does not match. The detection system of the electronic component on the circuit board according to the first aspect of the invention, wherein the prompt message generated by the prompting module is the production serial number including the standard area and the circuit board. A method for detecting electronic components on a circuit board, the detection method being used for detection in a production line, comprising the steps of: pre-capturing a standard image of a standard circuit board, and establishing two calibration points in the standard image, Establishing at least one standard area and an electronic component type corresponding to the standard area; when a circuit board having a production serial number is positioned by the production line for detection, capturing a circuit board image; finding the image of the circuit board a feature point corresponding to the correction point in the standard image, and calculating a translation according to the correction point and the feature point a matrix and a rotation matrix for correcting the image of the circuit board; finding a corresponding alignment area in the corrected image of the circuit board according to the standard area, and performing the standard area according to the type of the electronic component And the image processing result specified by the comparison area; the image processing result specified by the standard area and the comparison area is selected according to the electronic component type, and the comparison condition is used to compare the image processing result; When the standard area is inconsistent with the image processing result of the comparison area, the production serial number corresponding to the standard area and the circuit board is correspondingly recorded; and when the standard area and the circuit board are correspondingly recorded The production serial number generates a prompt message. The method for detecting an electronic component on a circuit board according to claim 6, wherein the corresponding alignment area is found in the corrected image of the circuit board according to the standard area, and according to the type of the electronic component. The image processing in the step of performing image processing specified by the standard area and the comparison area includes grayscale processing, spatial filtering, frequency filtering, image restoration, image color analysis, wavelet processing, morphological processing, and image processing. Segmentation and quantitative analysis of images. The method for detecting electronic components on a circuit board according to claim 6, wherein the standard area and the comparison area are subjected to image processing results, and the comparison condition is selected according to the type of the electronic component. The alignment conditions in the step of processing the results of the alignment include contours, geometric conditions, and color configurations. The detection side of the electronic component on the circuit board as described in claim 6 of the patent application scope a method, wherein when the standard area is inconsistent with the image processing result of the comparison area, the step of correspondingly recording the production serial number of the standard area and the circuit board is when the standard area is If the image processing result of the comparison area exceeds the error value, the comparison does not match. The method for detecting an electronic component on a circuit board according to claim 6, wherein the prompt message in the step of generating the prompt message is corresponding to the recording of the standard area and the production serial number of the circuit board. The production serial number of the standard area and the circuit board is included.