阅读说明：本技术 一种模组入带方法、装置及存储介质 (Module band-in method, device and storage medium ) 是由 梁天龙 陈华略 林榕 许华 于 2020-11-27 设计创作，主要内容包括：本申请公开一种模组入带方法、装置及存储介质,涉及视觉定位技术领域,所述方法包括以下步骤：A100、设定特定数量的编带空格为一组单元组,令编带形成若干组连续的单元组；A200、设定单元组的首尾两个编带空格的位置为标记位,并根据两个标记位以及单元组的编带空格数量计算获得每个编带空格的位置信息；A300、根据每个编带空格的位置信息将待装载的模组一次装载至每个编带空格内,完成一组单元组的装载动作；A400、将下一组单元组的首个编带空格移送至第一标记位；A500、重复步骤A200至A400,直至全部编带空格均装载有模组,采用本申请提供的技术方案提升了模组入带效率。(The application discloses a module band-in method, a device and a storage medium, which relate to the technical field of visual positioning, and the method comprises the following steps: a100, setting a certain number of braiding blanks as a group of unit groups, and enabling the braids to form a plurality of groups of continuous unit groups; a200, setting the positions of the head and the tail of the unit group of the braiding blank as mark positions, and calculating according to the two mark positions and the quantity of the braiding blanks of the unit group to obtain the position information of each braiding blank; a300, loading a module to be loaded into each braiding space at one time according to the position information of each braiding space to finish the loading action of a group of unit groups; a400, transferring the first braid blank of the next group of unit groups to a first marking position; a500, repeating the steps A200 to A400 until all the braiding blank spaces are loaded with the module, and the technical scheme provided by the application improves the module strip-entering efficiency.)

1. A module loading method is characterized in that: the method comprises the following steps:

a100, setting a certain number of braiding blanks as a group of unit groups, and enabling the braids to form a plurality of groups of continuous unit groups;

a200, setting the positions of the head and the tail of the unit group of the braiding blank as mark positions, and calculating according to the two mark positions and the quantity of the braiding blanks of the unit group to obtain the position information of each braiding blank;

a300, loading a module to be loaded into each braiding space at one time according to the position information of each braiding space to finish the loading action of a group of unit groups;

a400, transferring the first braid blank of the next group of unit groups to a first marking position;

and A500, repeating the steps A200 to A400 until all the braiding blanks are loaded with the modules.

2. The die set taping method of claim 1, wherein:

in step a200, the following steps are included:

a201, conveying a braid to a normal loading position, acquiring actual position information of a first braid space on a unit group, and setting the actual position information as a first mark position;

a202, calculating to obtain the actual position information of the last braiding space of the unit group according to the actual position information of the first braiding space, and setting the actual position information as a second mark position;

and A203, obtaining the position information of each braiding space between the first mark position and the second mark position according to the actual position information of the first mark position and the second mark position and the number of the braiding spaces of the unit group.

3. The die set taping method of claim 2, wherein:

in step a201, the following steps are included:

and A2011, acquiring rough position information of a first braiding space of the unit group, acquiring first picture information by the vision module, and acquiring actual position information of the first braiding space of the unit group according to the first picture information.

4. The die set taping method of claim 2, wherein:

in step a202, the following steps are included:

a2021, obtaining distance information between a first space and a last space of the unit group, and obtaining rough position information of the last space of the unit group by combining with actual position information of the first braiding space, and obtaining second picture information by the visual module, and obtaining actual position information of the last braiding space of the unit group according to the second picture information.

5. The die set taping method of claim 1, wherein:

in step a300, the following count comparison process is performed every time one module is loaded;

a301, after each module finishes loading, recording the total loading times of the whole roll of braid;

a302, comparing the total loading times of the whole roll of braid with the total lattice number of the whole roll of braid;

if the current total loading times are less than the total lattice number of the whole roll of braid, continuously loading the braid into the next module;

and if the current total loading times are equal to the total lattice number of the whole roll of the braid, finishing the module loading action of the whole roll of the braid.

6. The die set taping method of claim 5, wherein:

in step a302, when it is determined that the total number of current loads is less than the total number of complete braids, the method further includes the following steps:

after each module finishes loading, recording the total loading times of the current unit group; comparing the total loading times of the current unit group with the total lattice number of the whole unit group;

if the total loading times of the current unit group is less than the total lattice number of the whole unit group, continuously loading the current unit group into the next module;

if the total loading times of the current cell group is equal to the total cell number of the whole cell group, the loading operation of the current cell group is completed, and the step a400 is entered.

7. The die set taping method of claim 1, wherein:

in step a500, before repeating step a200, the method further comprises the following steps:

judging whether the current unit group is a first group of the whole roll of braid:

if the current unit group is the first group of the whole roll of the braid, entering the step A300;

if the current unit group is a first group of the non-whole-roll braids, acquiring the braid space information of a lattice before the first mark position;

if the module information of the braiding blank of the previous frame of the first mark position does not exist, the braiding position is manually adjusted until the first braiding blank falls into the first mark position, and then the step A200 is carried out.

8. The die set taping method of claim 1, wherein: before the module is placed into a space of the braid by the transferring module, the module is identified and module information is obtained by the vision module;

the visual module acquires module information and image information of the spaces on the braid, and different exposure time is switched.

9. A module belt embedding device is characterized in that: the module loading device is used for executing the module loading method according to any one of claims 1 to 8, and comprises a device body, and a vision module, a transfer module, an assembly module and a main control module which are arranged on the device body;

the vision module is used for acquiring picture information and sending a signal to the main control module;

the transfer module receives a signal sent by the main control module and is used for loading the module into the braid;

the assembly module receives the signal sent by the main control module and is used for assembling the module;

the main control module is used for receiving the signal of the vision module or an external source signal and controlling the vision module, the transferring module and the assembling module.

10. A storage medium, characterized by: the storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 8.

Technical Field

The present disclosure relates to the field of visual positioning technologies, and in particular, to a method and an apparatus for loading a module into a tape, and a storage medium.

Background

A braid or a carrier tape is mainly applied to the electronic component mounting industry. The braider loads and stores electronic component modules such as resistors, capacitors, transistors, diodes and the like in spaces of the braider, is matched with a cover tape (an upper sealing tape) for use, and forms a closed package by sewing the cover tape above the braider for protecting the electronic components from being polluted and damaged in the transportation process.

In current automatic braider working process, the directional removal of braid is constantly put into the braid along with the module, nevertheless because mechanical physics motion has certain error, the distance of braid motion can not guarantee all the same at every turn, so need constantly relocate the braid, guarantee the accurate of module and go into the area, adopt this mode efficiency lower at present, need await for improving production efficiency.

Disclosure of Invention

The application aims to provide a module belt-in method, a module belt-in device and a storage medium, which improve the precision and the efficiency of a module belt, and further improve the production efficiency.

In order to achieve the above object, in a first aspect, the present application provides a method for loading a module into a tape, the method comprising the steps of:

a100, setting a certain number of braiding blanks as a group of unit groups, and enabling the braids to form a plurality of groups of continuous unit groups;

a200, setting the positions of the head and the tail of the unit group of the braiding blank as mark positions, and calculating according to the two mark positions and the quantity of the braiding blanks of the unit group to obtain the position information of each braiding blank;

a300, loading a module to be loaded into each braiding space at one time according to the position information of each braiding space to finish the loading action of a group of unit groups;

a400, transferring the first braid blank of the next group of unit groups to a first marking position;

a500, repeating the steps A200 to A400 until all the braiding blanks are loaded with the modules;

preferably, step a200 includes the following steps:

a201, conveying a braid to a normal loading position, acquiring actual position information of a first braid space on a unit group, and setting the actual position information as a first mark position;

a202, calculating to obtain the actual position information of the last braiding space of the unit group according to the actual position information of the first braiding space, and setting the actual position information as a second mark position;

a203, obtaining the position information of each braiding space between the first mark position and the second mark position according to the actual position information of the first mark position and the second mark position and the number of the braiding spaces of the unit group;

preferably, in step a201, the following steps are included:

and A2011, acquiring rough position information of a first braiding space of the unit group, acquiring first picture information by the vision module, and acquiring actual position information of the first braiding space of the unit group according to the first picture information.

Preferably, in step a201, the following steps are included:

and A2011, acquiring rough position information of a first braiding space of the unit group, acquiring first picture information by the vision module, and acquiring actual position information of the first braiding space of the unit group according to the first picture information.

Preferably, in step a202, the following steps are included:

a2021, obtaining distance information between a first space and a last space of the unit group, and obtaining rough position information of the last space of the unit group by combining with actual position information of the first braiding space, and obtaining second picture information by the visual module, and obtaining actual position information of the last braiding space of the unit group according to the second picture information.

Preferably, in step a300, the following counting and comparing processes are performed after each module is loaded;

a301, after each module finishes loading, recording the total loading times of the whole roll of braid;

a302, comparing the total loading times of the whole roll of braid with the total lattice number of the whole roll of braid;

if the current total loading times are less than the total lattice number of the whole roll of braid, continuously loading the braid into the next module;

and if the current total loading times are equal to the total lattice number of the whole roll of the braid, finishing the module loading action of the whole roll of the braid.

Preferably, in step a302, when it is determined that the total number of current loads is less than the total number of complete braids, the method further includes the following steps:

after each module finishes loading, recording the total loading times of the current unit group; comparing the total loading times of the current unit group with the total lattice number of the whole unit group;

if the total loading times of the current unit group is less than the total lattice number of the whole unit group, continuously loading the current unit group into the next module;

if the total loading times of the current cell group is equal to the total cell number of the whole cell group, the loading operation of the current cell group is completed, and the step a400 is entered.

Preferably, in step a500, before repeating step a200, the method further comprises the following steps:

judging whether the current unit group is a first group of the whole roll of braid:

if the current unit group is the first group of the whole roll of the braid, entering the step A300;

if the current unit group is a first group of the non-whole-roll braids, acquiring the braid space information of a lattice before the first mark position;

if the module information of the braiding blank of the previous frame of the first mark position does not exist, the braiding position is manually adjusted until the first braiding blank falls into the first mark position, and then the step A200 is carried out.

Preferably, the module is placed in front of the spaces of the braids by the transferring module, and the module is identified and module information is obtained by the vision module;

the visual module acquires module information and image information of the spaces on the braid, and different exposure time is switched.

In a second aspect, the present application provides a module loading device for performing any one of the above-mentioned module loading methods, including a device body, a vision module, a transfer module, an assembly module, and a main control module, which are disposed on the device body;

the vision module is used for acquiring picture information and sending a signal to the main control module;

the transfer module receives a signal sent by the main control module and is used for loading the module into the braid;

the assembly module receives the signal sent by the main control module and is used for assembling the module;

the main control module is used for receiving the signal of the vision module or an external source signal and controlling the vision module, the transferring module and the assembling module.

In a third aspect, the present application provides a storage medium having a computer program stored thereon, which, when executed by a processor, performs the steps of the method of any one of the above aspects.

Compared with the prior art, the beneficial effect of this application lies in:

(1) the visual positioning technology during module taping is greatly reduced, the braid is divided into a plurality of unit groups, only the position information of the head and the tail of two braid blank spaces in each unit group is needed to be obtained, the position information of the rest braid blank spaces in the unit group can be obtained by calculation, the accuracy of module taping is guaranteed, and meanwhile, the positioning efficiency is greatly improved, so that the production efficiency of the whole module taping is improved;

(2) the difference of the images obtained in module positioning and module identification in actual conditions is considered, the exposure parameters of the cameras are adjusted, the problem of camera shooting difference caused by the fact that the same camera is adopted for positioning identification and module identification is effectively solved by adjusting exposure time, and the problem of universality is achieved by means of simple adjustment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic workflow diagram of one embodiment of the present application;

FIG. 2 is a schematic workflow diagram of one embodiment of the present application;

FIG. 3 is a schematic representation of an image of a taped space at an exposure time according to the present application;

FIG. 4 is a schematic representation of an image of a taped space at an exposure time according to the present application;

FIG. 5 is a schematic diagram of an image after a taping space binarization process according to an embodiment of the present application;

FIG. 6 is a schematic view of a braided lattice wire and its center according to one embodiment of the present application;

FIG. 7 is a schematic view of a braided grid wire and its center according to one embodiment of the present application.

Wherein: 10. a frame line; 11. a center.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

It should be noted that all the directional indications such as up, down, left, right, front and rear … … in the embodiment of the present invention are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:

the existing module tape-in method also adopts a visual positioning technology, but in the existing technology, each braiding blank is required to be positioned one by one, and then the modules are placed one by one, so that the positioning efficiency is low, and the module tape-in efficiency is low; in order to solve the technical problem, the present embodiment provides the following technical solutions:

specifically, referring to fig. 1-2, the present application discloses a module tape loading method, which includes the following steps:

a100, setting a certain number of braiding blanks as a group of unit groups, and enabling the braids to form a plurality of groups of continuous unit groups;

a200, setting the positions of the head and the tail of the unit group of the braiding blank as mark positions, and calculating according to the two mark positions and the quantity of the braiding blanks of the unit group to obtain the position information of each braiding blank;

a300, loading a module to be loaded into each braiding space at one time according to the position information of each braiding space to finish the loading action of a group of unit groups;

a400, transferring the first braid blank of the next group of unit groups to a first marking position;

and A500, repeating the steps A200 to A400 until all the braiding blanks are loaded with the modules.

In the scheme, the whole roll of the braid is divided into a plurality of unit groups, the position information of the head and the tail of the unit groups of the braid spaces is identified, and the braid spaces are regularly arranged, so that the position information of the rest braid spaces between the head two spaces can be easily obtained according to a distance algorithm, the position information of all the braid spaces in the unit groups is obtained, and then the module taping is carried out according to the obtained position information;

compared with the existing module strip-feeding method, the method has the advantages that the number of times of braid blank positioning is greatly reduced, meanwhile, the method has higher precision, and the module strip-feeding efficiency is effectively improved.

Further, in step a200, the following steps are included:

a201, conveying a braid to a normal loading position, acquiring actual position information of a first braid space on a unit group, and setting the actual position information as a first mark position;

a202, calculating to obtain the actual position information of the last braiding space of the unit group according to the actual position information of the first braiding space, and setting the actual position information as a second mark position;

and A203, obtaining the position information of each braiding space between the first mark position and the second mark position according to the actual position information of the first mark position and the second mark position and the number of the braiding spaces of the unit group.

In the scheme, the quantity of the braiding blanks of the unit group is a preset value, and the braiding blanks are regularly arranged, so that after the actual position information of the first mark position and the second mark position is obtained, the position information of the rest braiding blanks in the unit group can be quickly and accurately calculated by integrating the quantity information of the braiding blanks and the actual position information of the first mark position and the second mark position;

further, in step a201, the following steps are included:

and A2011, acquiring rough position information of a first braiding space of the unit group, acquiring first picture information by the vision module, and acquiring actual position information of the first braiding space of the unit group according to the first picture information.

In the scheme, rough position information of a first braiding space of the unit group is obtained, the rough position information can be obtained through presetting or signal communication with front-end production equipment, is an approximate position of the first braiding space of the unit group, a camera is arranged above the approximate position according to the approximate position, and actual position information of the camera is obtained through obtaining picture information and analyzing;

referring to fig. 3, it can be seen from fig. 3 that the braiding spaces are regular patterns, so that the position information can be easily obtained by the conventional image analysis technology, and the specific methods of obtaining the position information and coordinates by the image are not described herein in detail.

Further, in step a202, the following steps are included:

a2021, obtaining distance information between a first space and a last space of the unit group, and obtaining rough position information of the last space of the unit group by combining with actual position information of the first braiding space, and obtaining second picture information by the visual module, and obtaining actual position information of the last braiding space of the unit group according to the second picture information.

In the scheme, the distance information of the first space and the last space can be set in advance, after the actual position information of the first space is obtained, the rough position information of the last space can be calculated by integrating the first space and the last space, the camera can move to the position above the last space according to the rough position information, the actual position coordinate information of the camera can be obtained by a visual identification and positioning method, the accurate position information of the first space and the last space in the unit group can be obtained, and then the position information of the rest of the braided spaces in the unit group can be calculated according to the number of the braided spaces.

Specifically, in step a300, the following count comparison process is performed after each module is loaded;

a301, after each module finishes loading, recording the total loading times of the whole roll of braid;

a302, comparing the total loading times of the whole roll of braid with the total lattice number of the whole roll of braid;

if the current total loading times are less than the total lattice number of the whole roll of braid, continuously loading the braid into the next module;

if the current total loading times are equal to the total lattice number of the whole roll of the braid, completing the module loading action of the whole roll of the braid;

further, in step a302, when it is determined that the total current loading times is less than the total number of lattices of the whole volume of braid, the method further includes the following steps:

after each module finishes loading, recording the total loading times of the current unit group; comparing the total loading times of the current unit group with the total lattice number of the whole unit group;

if the total loading times of the current unit group is less than the total lattice number of the whole unit group, continuously loading the current unit group into the next module;

if the total loading times of the current unit group is equal to the total lattice number of the whole unit group, finishing the loading action of the current unit group, and entering the step A400;

in the above solution, in this embodiment, taking the total number of the whole volume of braiding spaces as 270, and the number of each unit group as 12 as an example, when the position information of all braiding spaces is obtained, the module taping operation is started, the recording times are accumulated every time one module is loaded, and the recording times are divided into two types, where one type of module taping is the first number in the whole volume of braiding, and the number may exceed 12, but may not exceed 270; the second is that the module of this time-band is the first one in the group of units, the value can not exceed 12; the method comprises the following specific steps:

after one module finishes the tape feeding, the tape feeding is compared with the total number 270 of the braids, if the number is just 270, the whole roll of the braids is proved to finish the module tape feeding process, and workers can replace the next roll of the braids to carry out the module tape feeding; if the number is lower than 270, comparing the recording times of the current module with the unit group number 12, if the number is smaller than 12, continuing the module tape feeding operation, if the number is equal to 12, indicating that the current module finishes the module tape feeding, entering the tape feeding operation of the next module, winding the current module by using the tape feeding device, driving the next module to a specified position, and repeating the operations of identification, positioning and module tape feeding.

Specifically, in step a500, before repeating step a200, the method further includes the following steps:

judging whether the current unit group is a first group of the whole roll of braid:

if the current unit group is the first group of the whole roll of the braid, entering the step A300;

if the current unit group is a first group of the non-whole-roll braids, acquiring the braid space information of a lattice before the first mark position;

if the module information of the braiding blank of the previous lattice of the first mark position does not exist, manually adjusting the braiding position until the first braiding blank falls into the first mark position, and entering the step A200;

in the above scheme, in the process of entering the next unit group after each unit group finishes entering the tape, it is firstly judged whether the current unit group is the first group of the whole roll of braid, if so, it indicates that the first braid space of the current unit group is also the first space of the whole roll of braid, so that the step a300 can be directly entered;

if the current unit group is not the first group of the whole roll of the braids, the situation that the braids blank space exists before the first gear blank space of the unit group under normal conditions is shown, and the braids blank space also has a module under normal conditions; therefore, if the previous unit group is not the first group of the whole roll of braids, the camera can easily obtain the position information of the braids in the previous lattices through the parameter information of the braids in the spaces after obtaining the position information of the first mark position, if the braids in the spaces exist in the module, the operation is normal, and the camera continues to obtain the position information of the second mark position; if the module does not exist in the weaving blank at the moment, the instruction book camera may be excessively displaced and is in an abnormal state, at the moment, the adjustment can be carried out by a worker, the instruction book camera is moved to the correct first marking position, the operation is repeated again, and whether the module exists in the space before the first weaving blank is detected.

Specifically, the embodiment further provides a module belt device, which includes a device body, and a vision module, a transfer module, an assembly module and a main control module which are arranged on the device body;

the vision module is used for acquiring picture information and sending a signal to the main control module;

the transfer module receives the signal sent by the main control module and is used for loading the module into the braid;

the assembling module is used for receiving the signal sent by the main control module and assembling the module;

the main control module is used for receiving the signal of the vision module or an external source signal and controlling the vision module, the transferring module and the assembling module;

specifically, in the embodiment, the transfer module and the vision module are fixedly disposed, and the vision module may be a camera.

The specific working process is as follows: the transfer module grabs a module to be rolled, the camera identifies module information, then whether the unit group is a first group of the whole roll of braid is judged, subsequent identification operation is carried out according to judgment, after all position information in the unit group is obtained, the grabbed module is placed into a first braid space, then the next module is grabbed, the module information is identified again, grabbing and placing operation is repeated, in the grabbing and placing operation, the module placing accumulated times are judged, and if the specified number is reached, the next unit group is entered or the whole roll of braid entering process is completed.

Further, the module information can be two-dimensional code information on the module, and the like;

in the above process, since the identification module information and the braid space information adopt the same camera, in the actual operation process, if the same camera shooting parameter is adopted, the situation as shown in fig. 5 can appear, specifically:

because the recognition of the identification location of the braid blank and the module information uses the same set of visual module, and during the two-dimensional code in the identification module, the camera needs to use a smaller aperture to reduce the reflection of light of the sticker, thereby increasing the success rate of the two-dimensional code identification. However, in this case, the photographed braid grid image is similar to that in fig. 3, and it can be seen from fig. 3 that the image is brighter in the middle and significantly darker in the periphery, so that when the binarization processing is performed, the obtained image is "exposed" severely in the periphery as shown in fig. 5, and the outline of the braid groove is difficult to identify, even cannot be identified; in order to solve the technical problem, the present embodiment provides the following technical solutions:

specifically, the visual module acquires module information and image information of spaces on the braid, and different exposure times are switched; that is, when the next recognition object is judged to be a braiding space, the exposure time is increased, and the specific effect is as shown in fig. 4, although the four weeks are seen to be darker than the middle of the image, the influence on the binarization processing is reduced greatly, so that the contour of the braiding space is easier to find, the braiding grid is recognized and positioned; when the next identification object is judged to be the module, the exposure time is shortened, and the problems that the reflection degree is high and the identification success rate is influenced are solved.

In particular, the master control module is a processor, and in some embodiments, the processor may include one or more processing cores (e.g., a single-core processor (S) or a multi-core processor (S)). Merely by way of example, a Processor may include a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), an Application Specific Instruction Set Processor (ASIP), a Graphics Processing Unit (GPU), a Physical Processing Unit (PPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Device (PLD), a controller, a microcontroller Unit, a reduced Instruction Set computer (reduced Instruction Set computer), a microprocessor, or the like, or any combination thereof.

Specifically, the present embodiment further provides a storage medium, where a computer program is stored on the storage medium, and the computer program is executed by a processor to perform the steps of the foregoing method;

furthermore, the storage medium can be a general storage medium, such as a mobile disk, a hard disk, and the like, and when a computer program on the storage medium is run, the visual positioning method can be executed, so that the problems that the sentence library scale is too large and too many resources are occupied due to a large amount of information caused by various language expression combination forms in the prior art are solved, and the effect of reducing the resource occupation is further achieved.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The present invention has been described in further detail with reference to specific preferred embodiments, and it is not intended that the present invention be limited to these embodiments. It will be readily apparent to those skilled in the art that various modifications can be made to the embodiments, and thus, several simple deductions or substitutions made without departing from the spirit and scope of the present invention should be considered as falling within the protection scope of the present invention.