CN112770048A - Automatic code scanning system for focusing machine - Google Patents
Automatic code scanning system for focusing machine Download PDFInfo
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- CN112770048A CN112770048A CN202011605550.8A CN202011605550A CN112770048A CN 112770048 A CN112770048 A CN 112770048A CN 202011605550 A CN202011605550 A CN 202011605550A CN 112770048 A CN112770048 A CN 112770048A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
- G06K7/1417—2D bar codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/64—Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image
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Abstract
The invention relates to the technical field of camera detection, and particularly discloses an automatic code scanning system for a focusing machine, which comprises a manipulator and the focusing machine; the system also comprises an image acquisition module, a control module, an identification module and a server; the identification module is used for identifying the two-dimensional code on the camera module and extracting the character string; the manipulator is also used for placing the camera module on a working position of the focusing machine according to the focusing moving path after the two-dimensional code is identified; the server is used for acquiring the character string from the identification module, determining a product serial number based on the character string and sending the product serial number to the focusing machine; the focusing machine is used for focusing the camera module, determining focusing data and solidifying the focusing data and the product serial number into the camera module. By adopting the technical scheme of the invention, the production efficiency can be improved.
Description
Technical Field
The invention relates to the technical field of camera detection, in particular to an automatic code scanning system for a focusing machine.
Background
A camera module (CCM) is generally applied to a mobile terminal such as a mobile phone. The camera module generally comprises a voice coil motor, a lens, a filter, an imaging chip and a processing chip. In order to ensure that the produced camera module can normally work, the camera module needs to be focused, tested, dispensed and UV cured before leaving the factory.
Wherein focusing is in order to make the camera module can find clear formation of image position. For example, chinese patent publication No. CN106341584B discloses a focusing production process for a camera module, which includes: selecting a first preset target, and focusing the camera lens; selecting a second preset target, and starting the voice coil motor to push the camera lens to perform focusing test on the second preset target; recording current values x of a plurality of groups of input voice coil motors and moving distance values y of the voice coil motors in a one-to-one correspondence manner in the process of focusing a second preset target by the camera lens; calculating to obtain a distance value B of the camera lens, which is required to correct sinking, according to the changed distance values A, x and y of the camera lens caused by the external environment; and (5) sinking the camera lens to adjust the distance value B and solidifying.
According to the scheme, the sinking adjustment distance value B can be solidified into the processing chip through the focusing machine, and the focusing accuracy is guaranteed. In order to conveniently trace the solidified data such as the sinking adjustment distance value B of each camera module, the solidified data needs to be uploaded and bound with the product serial number. In order to facilitate reading of the product serial number, the serial number needs to be solidified in a processing chip of the camera module. However, the separate process of curing the product serial number tends to increase the time and affect the production efficiency.
Therefore, an automatic code scanning system for a focusing machine, which can improve the production efficiency, is required.
Disclosure of Invention
The invention provides an automatic code scanning system for a focusing machine, which can improve the production efficiency.
In order to solve the technical problem, the present application provides the following technical solutions:
the automatic code scanning system for the focusing machine comprises a manipulator and the focusing machine;
the system also comprises an image acquisition module, a control module, an identification module and a server;
the image acquisition module is used for acquiring an image containing the camera module;
the control module is used for acquiring an image, analyzing the coordinates of the camera module based on the image, and calculating a code scanning movement path and a focusing movement path of the manipulator based on the coordinates of the camera module;
the manipulator is used for taking the camera module after acquiring the code scanning moving path and moving the camera module to the upper part of the identification module according to the code scanning moving path;
the identification module is used for identifying the two-dimensional code on the camera module and extracting the character string;
the manipulator is also used for placing the camera module on a working position of the focusing machine according to the focusing moving path after the two-dimensional code is identified;
the server is used for acquiring the character string from the identification module, determining a product serial number based on the character string and sending the product serial number to the focusing machine;
the focusing machine is used for focusing the camera module, determining focusing data and solidifying the focusing data and the product serial number into the camera module.
The basic scheme principle and the beneficial effects are as follows:
in this scheme, through the coordinate of analysis camera module, can sweep sign indicating number removal route and focusing removal route for the manipulator planning, be convenient for let the manipulator take the camera module after, accurate removal is to image acquisition module top and focusing machine on.
The identification module extracts the character string from the two-dimensional code of the camera module, and the server determines the product serial number based on the character string, so that the character string and the product serial number are corresponding to each other. The focusing machine originally needs to solidify focusing data into the camera module, and on the basis, the product serial number is solidified into the camera module, so that the special process of solidifying the product serial number can be reduced, the time for transferring the camera module to the process of solidifying the product serial number is saved, and the production efficiency can be improved. And the quantity requirement of curing equipment is reduced, and the cost is reduced.
Further, a serial number pool allocation table and a plurality of idle serial number pools are prestored in the server, and the serial number pool allocation table comprises idle serial number pool information corresponding to the character strings; and the server selects a product serial number from the idle serial number pool corresponding to the character string based on the character string and the serial number pool allocation table.
The number of the idle serial number pools is several, so that the product serial numbers in different idle serial number pools can be conveniently distributed for different types of camera modules.
Further, the server is also used for binding the selected product serial number with the character string and marking the selected product serial number as an occupied product serial number.
The selected product serial number is bound with the character string, and the product serial number can be indirectly known subsequently through a mode of scanning the two-dimensional code.
Further, the focusing machine is also used for reading the product serial number for verification after curing, and if the verification is passed, the focusing machine sends curing information to the server.
And checking to judge whether the curing is successful.
Further, the curing information comprises curing time, curing results and brushing-in equipment of the product serial number.
Further, the focusing machine is also used for sending focusing data to a server, and the server is also used for acquiring the focusing data and storing the focusing data and the product serial number together.
And focusing data can be traced conveniently according to the product serial number.
Further, when the control module analyzes the coordinates of the camera module based on the image, the camera module is marked out from the image, the positioning feature point is determined from the camera module, and the coordinates of the camera module are obtained based on the position of the pixel of the positioning feature point.
The position of the image acquisition module is determined, and the corresponding position of each pixel in the image acquired by the image acquisition module is also determined, so that the position of the pixel of the positioning feature point is known, and the coordinate of the camera module can be obtained.
Further, after the control module acquires the image, the control module also performs preprocessing on the image, wherein the preprocessing comprises blackening, whitening and sharpening.
After the black and white, the pixels have no color information and only gray information, so that the data processing amount can be reduced; after sharpening, the edge contour can be protruded, so that the positioning feature points can be quickly determined.
Drawings
FIG. 1 is a logic block diagram of an automatic code scanning system for a focusing machine according to an embodiment.
Detailed Description
The following is further detailed by way of specific embodiments:
example one
As shown in fig. 1, the automatic code scanning system for a focusing machine of the present embodiment includes a manipulator, a focusing machine, an image acquisition module, a control module, an identification module, and a server.
The image acquisition module is used for acquiring an image containing the camera module; in this embodiment, the image acquisition module has a camera with a CCD sensor.
The control module is used for acquiring images, analyzing the coordinates of the camera module based on the images, and calculating a code scanning movement path and a focusing movement path of the manipulator based on the coordinates of the camera module. Specifically, after the control module acquires the image, the image is preprocessed, wherein the preprocessing comprises blackening, whitening and sharpening. When the control module analyzes the coordinates of the camera module based on the image, the camera module is marked out from the image, the positioning characteristic points are determined from the camera module, and the coordinates of the camera module are obtained based on the positions of the pixels of the positioning characteristic points. In this embodiment, the location feature point is the position of easily distinguishing on the camera module, and the location feature point is predetermined by the staff. The position of the image acquisition module is determined, and the corresponding position of each pixel point in the image acquired by the image acquisition module is also determined, so that the position of the pixel of the positioning feature point is known, and the coordinate of the camera module can be obtained.
The manipulator is used for obtaining and sweeps a yard moving path after, takes the camera module, moves the camera module to the identification module top according to sweeping a yard moving path. In this embodiment, the manipulator adopts the triaxial manipulator, and the camera module is adsorbed through the mode that produces the negative pressure to the manipulator, realizes taking. Because the upper surface of camera module all is the camera lens part, does not have the space two-dimensional code of printing, so most two-dimensional code are printed in the bottom of camera module, consequently need to remove the camera module and discern above the identification module.
The identification module is used for identifying the two-dimensional code on the camera module and extracting the character string.
The manipulator is also used for placing the camera module on a working position of the focusing machine according to the focusing moving path after the two-dimensional code is identified.
The server is used for acquiring the character string from the identification module, determining a product serial number based on the character string and sending the product serial number to the focusing machine. Specifically, a serial number pool allocation table and a plurality of idle serial number pools are prestored in the server, and the serial number pool allocation table contains idle serial number pool information corresponding to the character strings. The server selects a product serial number from the idle serial number pool corresponding to the character string based on the character string and the serial number pool allocation table, which is randomly selected in this embodiment. The server is also used for binding the selected product serial number with the character string and marking the selected product serial number as an occupied product serial number.
The focusing machine is used for focusing the camera module, determining focusing data and sending the focusing data to the server, and the server is also used for acquiring the focusing data and storing the focusing data and the product serial number together.
The focusing machine is also used for solidifying the focusing data and the product serial number into the camera module. The focusing machine is also used for reading the product serial number for verification after curing, and sending curing information to the server if the verification is passed. The curing information comprises curing time of the product serial number, curing results and brushing-in equipment.
Example two
The difference between the present embodiment and the first embodiment is that the present embodiment further includes a carrier for placing the camera module. The camera module is placed on a carrier and transported to the focusing machine.
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 automatic code scanning system 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 camera module 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, a direct grabbing instruction is sent to the control module, and after the control module receives the direct grabbing instruction, the manipulator is controlled to move according to a preset code scanning moving path; if the abnormal vibration data range is included, the verification module sends an analysis instruction to the control module, and the control module analyzes whether the camera module is in a normal position or not based on the image after receiving the analysis instruction. 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 if loading success information is generated, controlling the manipulator to move according to a preset code scanning moving path, and if loading failure information is generated, analyzing the coordinates of the camera module based on the image, and calculating the code scanning moving path and the focusing moving path of the manipulator based on the coordinates of the camera module. The control module is also used for sending the loading success information or the 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 camera module is normally transported by the carrier, can guarantee that the position of camera module is normal, when the position is normal, can make things convenient for the manipulator to sweep a yard moving path according to predetermineeing and snatch (if the position is abnormal, lead to easily snatching the failure), just also need not all judge the position of camera module through control module at every turn, can save time, improve the efficiency of production.
When the carrier is not stable enough in the process of transporting the camera module, the acceleration data exceeds the acceleration threshold, or the deflection angle data exceeds the deflection angle threshold, so that the situation can be reflected. At this time, the camera module on the carrier may move, resulting in deviation of the relative position. When the camera module moves, the camera module easily collides with the carrier, and the carrier vibrates 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 belong to normal vibration data range, do not carry out other operations, show that the camera module does not appear removing, do not carry out other operations, if belong to predetermined abnormal vibration data range, whether rethread control module judges the camera module and is in normal position.
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 camera module is still in the normal position condition, which may be that the abnormal vibration data range is not accurate, or may be that the camera module returns to the initial position after moving irregularly 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 camera module moved, the movable block also can move, leads to the disconnection of current loop, can come the action that the camera module removed with the movable block in other words, avoided the camera module to return to this kind of small probability incident in initial position again after moving irregularly. However, the preset value of the magnetic force needs to accurately simulate the friction force between the camera module and the carrier to achieve the above effect, and therefore the preset value of the magnetic force needs to be adjusted, that is, the camera module moves, and the moving block does not move, which indicates that the preset value of the magnetic force is too large and needs to be lowered.
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 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 camera module can be accurately judged whether to move by independently relying on the circuit loop information, and the condition that the deviation occurs in the relative position of the camera module and the carrier can be judged according to the actual condition 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 camera module 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. The automatic code scanning system for the focusing machine comprises a manipulator and the focusing machine;
the system is characterized by also comprising an image acquisition module, a control module, an identification module and a server;
the image acquisition module is used for acquiring an image containing the camera module;
the control module is used for acquiring an image, analyzing the coordinates of the camera module based on the image, and calculating a code scanning movement path and a focusing movement path of the manipulator based on the coordinates of the camera module;
the manipulator is used for taking the camera module after acquiring the code scanning moving path and moving the camera module to the upper part of the identification module according to the code scanning moving path;
the identification module is used for identifying the two-dimensional code on the camera module and extracting the character string;
the manipulator is also used for placing the camera module on a working position of the focusing machine according to the focusing moving path after the two-dimensional code is identified;
the server is used for acquiring the character string from the identification module, determining a product serial number based on the character string and sending the product serial number to the focusing machine;
the focusing machine is used for focusing the camera module, determining focusing data and solidifying the focusing data and the product serial number into the camera module.
2. The automatic code scanning system for a focusing machine according to claim 1, wherein: the server is also pre-stored with a serial number pool allocation table and a plurality of idle serial number pools, wherein the serial number pool allocation table comprises idle serial number pool information corresponding to the character strings; and the server selects a product serial number from the idle serial number pool corresponding to the character string based on the character string and the serial number pool allocation table.
3. The automatic code scanning system for a focusing machine according to claim 2, wherein: the server is also used for binding the selected product serial number with the character string and marking the selected product serial number as an occupied product serial number.
4. The automatic code scanning system for a focusing machine according to claim 3, wherein: the focusing machine is also used for reading the product serial number for verification after curing, and transmitting curing information to the server if the verification is passed.
5. The automatic code scanning system for a focusing machine according to claim 4, wherein: the curing information comprises curing time, curing results and brushing-in equipment of the product serial number.
6. The automatic code scanning system for a focusing machine according to claim 5, wherein: the focusing machine is further used for sending the focusing data to the server, and the server is further used for obtaining the focusing data and storing the focusing data and the product serial number together.
7. The automatic code scanning system for a focusing machine according to claim 6, wherein: when the control module analyzes the coordinates of the camera module based on the image, the camera module is marked out from the image, the positioning characteristic points are determined from the camera module, and the coordinates of the camera module are obtained based on the positions of the pixels of the positioning characteristic points.
8. The automatic code scanning system for a focusing machine according to claim 7, wherein: after the control module acquires the image, the control module also carries out preprocessing on the image, wherein the preprocessing comprises blackening, whitening and sharpening.
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| US20150168701A1 (en) * | 2013-12-16 | 2015-06-18 | Ffei Limited | Method and apparatus for estimating an in-focus position |
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