CN112712149A - Production information management system based on two-dimensional code recognition - Google Patents
Production information management system based on two-dimensional code recognition Download PDFInfo
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Abstract
The invention relates to the technical field of camera production, and particularly discloses a production information management system based on two-dimensional code identification, which comprises an AOI detection end and a server, wherein the AOI detection end comprises an AOI detection module and is used for acquiring a front image of a circuit board, comparing the front image with a pre-stored standard image and generating a detection result after comparison; the AOI detection end further comprises a two-dimensional code recognition module, the two-dimensional code recognition module is used for collecting a back image of the circuit board while the AOI detection module collects a front image of the circuit board, determining an area where the two-dimensional code is located from the back image, recognizing the two-dimensional code and extracting a product serial number in the two-dimensional code; the server comprises a processing module, and the processing module is used for acquiring the detection result from the AOI detection module, acquiring the product serial number from the two-dimensional code identification module, and associating the product serial number with the detection result. By adopting the technical scheme of the invention, the AOI detection efficiency can be improved.
Description
Technical Field
The invention relates to the technical field of camera production, in particular to a production information management system based on two-dimension code identification.
Background
A camera module (CCM) is generally applied to a mobile terminal such as a mobile phone. The camera module generally includes a voice coil motor, a lens, a filter, an imaging chip and a circuit board, and the imaging chip is disposed on the circuit board. In order to ensure that the produced camera module can work normally, the circuit board, which is an important component of the camera module, needs to be detected in the production process. In order to facilitate tracing of the condition of each circuit board, information of the circuit board in each detection link needs to be collected.
In the prior art, in order to realize the tracing of the circuit board, a two-dimensional code is usually printed on the circuit board, in each detection link, the two-dimensional code on each circuit board is identified, and the detected data is associated with the identified two-dimensional code. For example, in AOI (Automated Optical Inspection), a code scanning gun is required to identify a two-dimensional code on a circuit board, and then an AOI device detects the circuit board, which is complicated in steps and low in detection efficiency.
For this reason, a production information management system capable of improving AOI detection efficiency is required.
Disclosure of Invention
The invention provides a production information management system based on two-dimension code identification, which can improve AOI detection efficiency.
In order to solve the technical problem, the present application provides the following technical solutions:
a production information management system based on two-dimensional code recognition comprises an AOI detection end and a server, wherein the AOI detection end comprises an AOI detection module and is used for collecting a front image of a circuit board, comparing the front image with a pre-stored standard image and generating a detection result after comparison;
the AOI detection end further comprises a two-dimensional code recognition module, the two-dimensional code recognition module is used for collecting a back image of the circuit board while the AOI detection module collects a front image of the circuit board, determining an area where the two-dimensional code is located from the back image, recognizing the two-dimensional code and extracting a product serial number in the two-dimensional code;
the server comprises a processing module, a two-dimensional code identification module and a processing module, wherein the processing module is used for acquiring a detection result from the AOI detection module, acquiring a product serial number from the two-dimensional code identification module and associating the product serial number with the detection result;
the processing module is also used for judging whether bad data exist in the detection result, judging whether the bad data reach a monitoring value if the bad data exist, and generating alarm information if the bad data reach the monitoring value.
The basic scheme principle and the beneficial effects are as follows:
because the front of circuit board distributes usually has a large amount of electronic components, and the volume of camera module itself is not big in addition, leads to the surface area of circuit board also not big, and the positive surplus space of circuit board is not enough to print the two-dimensional code, so under the general condition, the two-dimensional code can be printed on the back of circuit board.
In the scheme, the two-dimensional code recognition module collects and recognizes the back image of the circuit board while the AOI detection module collects the front image of the circuit board; compared with the prior art that the two-dimensional code is identified after detection or the two-dimensional code is identified before detection, the time for identifying the two-dimensional code can be effectively saved, and the detection efficiency is improved. And the processing module generates alarm information when the bad data reaches the monitoring value, so that subsequent workers can timely process the bad data.
Further, the processing module generates alarm information and also generates production stop information.
Follow-up staff of being convenient for inspects the production line, pinpoints the fault reason.
Further, when the AOI detection module compares the front image with a pre-stored standard image, if the front image has an inconsistent part with the standard image, the inconsistent part is marked out from the front image, and the front image marked with the inconsistent part is stored in a detection result.
And the management end is used for acquiring the alarm information and the production stop information from the processing module and displaying the alarm information and the production stop information.
The staff can in time learn alarm information and stop production information through the management end.
Further, the two-dimensional code detection module is also used for generating identification error information when the area where the two-dimensional code is located cannot be determined from the back image; the processing module is also used for acquiring identification error information from the two-dimensional code detection module; and the processing module is also used for acquiring historical two-dimensional code identification information from a terminal of the previous process after acquiring the identification error information, judging whether the historical two-dimensional code identification information contains identification error data or not, and if the historical two-dimensional code identification information does not contain the identification error data, generating information to be confirmed.
Further, the processing module is further configured to determine whether the number of times of generating the information to be confirmed within the preset time is greater than a threshold, and if so, the processing module is further configured to generate the maintenance information.
When the two-dimensional code detection module cannot determine the area where the two-dimensional code is located from the back image, the two-dimensional code on the circuit board may be missing, and the two-dimensional code detection module may be faulty. Whether the two-dimension code identification in the previous process is normal can be determined by acquiring historical two-dimension code identification information from a terminal of the previous process and judging whether the historical two-dimension code identification information contains identification error data, and if the identification error data does not exist, the two-dimension code identification in the previous process is normal on the surface, in other words, the possibility of two-dimension code deletion on a circuit board can be eliminated. And after the number of times of confirming the information is greater than the threshold value, generating maintenance information, and facilitating follow-up workers to overhaul the two-dimensional code detection module.
Further, the threshold is 2-5 times.
Further, the server also comprises a storage module, and the processing module is also used for storing the product serial number and the detection result into the storage module.
Drawings
Fig. 1 is a logic block diagram of a production information management system based on two-dimensional code recognition according to an embodiment.
Detailed Description
The following is further detailed by way of specific embodiments:
example one
As shown in fig. 1, the production information management system based on two-dimensional code identification of this embodiment includes an AOI detection end, a server, and a management end.
The AOI detection end comprises an AOI detection module and a two-dimensional code identification module.
The AOI detection module is used for collecting a front image of the circuit board, comparing the front image with a pre-stored standard image and generating a detection result after comparison. Specifically, when the AOI detection module compares the front image with a pre-stored standard image, if the front image and the standard image have inconsistent parts, the inconsistent parts are marked out in the front image, and the front image marked with the inconsistent parts is stored in a detection result. In this embodiment, the standard image refers to a front image taken when all components in the circuit board are normally soldered. In this embodiment, for example, the conditions of missing parts, offset, lack of tin, insufficient solder, etc. may occur, and the condition that the standard image is inconsistent may occur in the front image.
The two-dimensional code recognition module is used for collecting a back image of the circuit board, determining the area where the two-dimensional code is located from the back image, recognizing the two-dimensional code and extracting a product serial number in the two-dimensional code.
The server comprises a processing module and a storage module.
The processing module is used for acquiring a detection result from the AOI detection module, acquiring a product serial number from the two-dimensional code identification module and associating the product serial number with the detection result. The processing module is also used for judging whether bad data exist in the detection result, judging whether the bad data reach a monitoring value if the bad data exist, and generating alarm information and stopping production information if the bad data reach the monitoring value. The processing module is also used for storing the product serial number and the detection result into the storage module.
And the management terminal is used for acquiring the alarm information and the production stop information from the processing module and displaying the alarm information and the production stop information.
The two-dimensional code detection module is also used for generating identification error information when the area where the two-dimensional code is located cannot be determined from the back image; the processing module is also used for acquiring identification error information from the two-dimensional code detection module; and the processing module is also used for acquiring historical two-dimensional code identification information from a terminal of the previous process after acquiring the identification error information, judging whether the historical two-dimensional code identification information contains identification error data or not, and if the historical two-dimensional code identification information does not contain the identification error data, generating information to be confirmed.
The processing module is further used for judging whether the frequency of generating the information to be confirmed is greater than a threshold value within the preset time, and if the frequency of generating the information to be confirmed is greater than the threshold value, the processing module is further used for generating maintenance information. The threshold is 2-5 times, in this example 3 times.
Example two
The difference between the present embodiment and the first embodiment is that the present embodiment further includes a delivery end, and the delivery end includes a manipulator, an image analysis module, and a carrier for placing a circuit board. The circuit board is placed on a carrier for transport. The manipulator is used for grabbing the circuit board to AOI detection end from the carrier according to predetermined motion trail.
The image analysis module is used for capturing carrier images collected before the circuit board and placed behind the circuit board, comparing the carrier images with pre-stored standard images and judging whether the circuit board on the carrier is in a normal position or not. If the position is in the normal position, loading success information is generated, and if the position is not in the normal position, loading failure information is generated.
And the carrier is also provided with a vibration sensor, an acceleration sensor and a gyroscope which are respectively used for acquiring vibration data, acceleration data and deflection angle data.
The carrier is provided with a mounting groove, and a verification device is arranged in the mounting groove.
The verification device comprises a moving block made of insulating materials, and the cross sectional area of the moving block is smaller than that of the mounting groove.
Two first metal contacts are fixed on the lower surface of the moving block and connected by a lead in the edge connecting block; the lower surface of the insulating block is also fixed with two permanent magnets with opposite magnetic poles;
the verification device further comprises a power supply, a control circuit board, two second metal contacts and two electromagnets with opposite magnetic poles.
The two second metal contacts and the two electromagnets are fixed in the mounting grooves;
after the electromagnets with the two opposite magnetic poles adsorb the permanent magnets with the two opposite magnetic poles, the two first metal contacts on the moving block can be respectively contacted with the two second metal contacts. In other words, the two electromagnets with opposite magnetic poles attract the two permanent magnets with opposite magnetic poles, so that the moving block can move to the specified position in the mounting groove.
The power supply is electrically connected with the control circuit board, and the control circuit board is electrically connected with the two electromagnets. The control circuit board is used for controlling the magnetic force of the two electromagnets. And the two second metal contacts are electrically connected with the control circuit board. When the two first metal contacts are not contacted with the two second metal contacts, the control circuit board can detect that the current loop is disconnected.
The vibration sensor, the acceleration sensor and the gyroscope are all electrically connected with the control circuit board, and the collected vibration data, the collected acceleration data and the collected deflection angle data are sent to the control circuit board.
The server also comprises a verification module, wherein the verification module is used for acquiring acceleration data, deflection angle data and vibration data from the control circuit board when the circuit board is transported on the carrier;
the verification module is also used for judging whether the acceleration data exceeds an acceleration threshold or the deflection angle data exceeds a deflection angle threshold; when one of the vibration data ranges is met, the verification module is further used for judging whether the current vibration data belongs to a preset normal vibration data range or a preset abnormal vibration data range.
If the vibration data belongs to the normal vibration data range, other operations are not carried out; if the abnormal vibration data range belongs to, the verification module sends an analysis instruction to the image analysis module, and after the image analysis module receives the analysis instruction, the image analysis module judges whether the circuit board is successfully loaded or not and sends loading success information or loading failure information to the verification module.
When the verification module receives the loading failure information, taking the current vibration data as the reference data of the abnormal vibration data range; the verification module is also used for acquiring current loop information from the control circuit board, sending a reset instruction to the control circuit board if the current loop is disconnected, and sending a magnetic force reduction instruction to the control circuit board if the current loop is not disconnected. And after the control circuit board receives the reset instruction, the magnetic force of the electromagnet is increased until the current loop is conducted again, and then the magnetic force is restored to the preset value. And after the control circuit board receives the magnetic force reducing instruction, the preset value of the magnetic force is reduced.
And when the verification module receives the loading success information, acquiring current loop information from the control circuit board, and if the current loop is not disconnected, taking the current vibration data as the reference data of the normal vibration data range and correcting the abnormal vibration data range. And if the current loop is disconnected, taking the current vibration data as the reference data of the abnormal vibration data range.
When the circuit board was normally transported by the carrier, can guarantee that the position of circuit board is normal, when the position was normal, can make things convenient for the manipulator to snatch according to predetermined movement track (if the position is abnormal, lead to easily snatching the failure), just also need not all judge whether the deviation appears in the relative position of circuit board and carrier through image analysis module at every turn, can save time, improve the efficiency of detection and discernment.
When the vehicle is not sufficiently stationary while transporting the circuit board, the acceleration data exceeds the acceleration threshold, or the deflection angle data exceeds the deflection angle threshold, can reflect this. At this time, the circuit board on the carrier may move, resulting in deviation of the relative position. When the circuit board moves, the circuit board easily collides with the carrier, which causes the carrier to vibrate slightly. Therefore, the verification module is further configured to determine whether the current vibration data belongs to a preset normal vibration data range or a preset abnormal vibration data range. If the abnormal vibration data range belongs to the normal vibration data range, no other operation is performed, the circuit board is not moved, no other operation is performed, and if the abnormal vibration data range belongs to the preset abnormal vibration data range, whether deviation occurs in the relative position of the circuit board and the carrier or not is judged through the image analysis module.
However, the abnormal vibration data range and the normal vibration data range are not always completely accurate initially, and need to be continuously corrected to be perfect. Moreover, when the abnormal vibration data range belongs to the preset abnormal vibration data range, the relative position of the circuit board and the carrier does not deviate, which may be that the abnormal vibration data range is inaccurate, or that the circuit board returns to the initial position after irregularly moving from the initial position. In order to accurately correct the abnormal vibration data range, it is necessary to distinguish between the two cases. For this purpose, the present embodiment is provided with an authentication device. When the circuit board moves, the moving block also moves, so that the current loop is disconnected, in other words, the moving block can be used for representing the movement behavior of the circuit board, and the small probability event that the circuit board returns to the initial position after irregularly moving is avoided. However, the preset value of the magnetic force needs to accurately simulate the friction force between the circuit board and the carrier to achieve the above effect, and therefore, the preset value of the magnetic force needs to be adjusted, that is, the circuit board moves, but the moving block does not move, which indicates that the preset value of the magnetic force is too large and needs to be adjusted downward.
After the data sample is enough in the later stage, the abnormal vibration data range, the normal vibration data range and the preset value of the magnetic force can be accurate enough, the abnormal vibration data range, the normal vibration data range and the current loop information are combined, even the circuit loop information is independently relied on to judge whether the circuit board moves accurately, and the situation that the deviation occurs in the relative position of the circuit board and the carrier can be judged according to the actual situation by partially replacing or even completely replacing image recognition. The embodiment can also be applied to various processing links and transportation, and when the carrier moves unstably (too fast, inclined, collided and the like), whether the relative position of the circuit board and the carrier has deviation or not is judged.
The above are merely examples of the present invention, and the present invention is not limited to the field related to this embodiment, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, and those skilled in the art can know all the common technical knowledge in the technical field before the application date or the priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date, and those skilled in the art can combine their own ability to perfect and implement the scheme, and some typical known structures or known methods should not become barriers to the implementation of the present invention by those skilled in the art in light of the teaching provided in the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. A production information management system based on two-dimensional code recognition comprises an AOI detection end and a server, wherein the AOI detection end comprises an AOI detection module and is used for collecting a front image of a circuit board, comparing the front image with a pre-stored standard image and generating a detection result after comparison;
the AOI detection terminal is characterized by further comprising a two-dimensional code recognition module, wherein the two-dimensional code recognition module is used for collecting a back image of the circuit board while the AOI detection module collects a front image of the circuit board, determining the area where the two-dimensional code is located from the back image, recognizing the two-dimensional code and extracting a product serial number in the two-dimensional code;
the server comprises a processing module, a two-dimensional code identification module and a processing module, wherein the processing module is used for acquiring a detection result from the AOI detection module, acquiring a product serial number from the two-dimensional code identification module and associating the product serial number with the detection result;
the processing module is also used for judging whether bad data exist in the detection result, judging whether the bad data reach a monitoring value if the bad data exist, and generating alarm information if the bad data reach the monitoring value.
2. The production information management system based on two-dimensional code recognition according to claim 1, characterized in that: and the processing module generates alarm information and also generates production stop information.
3. The production information management system based on two-dimensional code recognition according to claim 2, characterized in that: when the AOI detection module compares the front image with a pre-stored standard image, if the front image has an inconsistent part with the standard image, the inconsistent part is marked in the front image, and the front image marked with the inconsistent part is stored in a detection result.
4. The production information management system based on two-dimensional code recognition according to claim 3, characterized in that: the management terminal is used for acquiring the alarm information and the production stop information from the processing module and displaying the alarm information and the production stop information.
5. The production information management system based on two-dimensional code recognition according to claim 4, characterized in that: the two-dimensional code detection module is also used for generating identification error information when the area where the two-dimensional code is located cannot be determined from the back image; the processing module is also used for acquiring identification error information from the two-dimensional code detection module; and the processing module is also used for acquiring historical two-dimensional code identification information from a terminal of the previous process after acquiring the identification error information, judging whether the historical two-dimensional code identification information contains identification error data or not, and if the historical two-dimensional code identification information does not contain the identification error data, generating information to be confirmed.
6. The production information management system based on two-dimensional code recognition according to claim 5, characterized in that: the processing module is further used for judging whether the frequency of generating the information to be confirmed is greater than a threshold value within the preset time, and if the frequency of generating the information to be confirmed is greater than the threshold value, the processing module is further used for generating maintenance information.
7. The production information management system based on two-dimensional code recognition of claim 6, wherein: the threshold is 2-5 times.
8. The production information management system based on two-dimensional code recognition of claim 7, wherein: the server also comprises a storage module, and the processing module is also used for storing the product serial number and the detection result into the storage module.
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| CN114092436A (en) * | 2021-11-18 | 2022-02-25 | 深圳市佰慧智能科技有限公司 | Operation and maintenance management system and management method based on video networking sharing |
| CN115805397A (en) * | 2023-02-16 | 2023-03-17 | 唐山海泰新能科技股份有限公司 | Photovoltaic module battery piece welding detecting system |
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