阅读说明：本技术 焊接方法及系统、电子设备以及存储介质 (Welding method and system, electronic device, and storage medium ) 是由 王兴阳 苏立虎 顾晓辉 谷孝满 于 2021-09-22 设计创作，主要内容包括：本发明实施例公开一种焊接方法及系统、电子设备以及存储介质,焊接方法包括：获得焊接过程中的实际送丝阻力值；基于实际送丝阻力值,控制送丝助力装置提供一与实际送丝阻力值呈正相关关系的送丝助力值。本发明实施例的焊接方法能够自动调节送丝助力装置的送丝力度,一方面避免焊接人员手动调节送丝助力装置的复杂过程,另一方面还提高了送丝助力装置的调节精度和送丝过程的稳定性,进而提高焊接质量。(The embodiment of the invention discloses a welding method and a system, electronic equipment and a storage medium, wherein the welding method comprises the following steps: obtaining an actual wire feeding resistance value in the welding process; based on the actual wire feeding resistance value, the wire feeding power assisting device is controlled to provide a wire feeding power assisting value which is positively correlated with the actual wire feeding resistance value. The welding method provided by the embodiment of the invention can automatically adjust the wire feeding force of the wire feeding power assisting device, on one hand, the complex process that a welder manually adjusts the wire feeding power assisting device is avoided, on the other hand, the adjustment precision of the wire feeding power assisting device and the stability of the wire feeding process are improved, and further, the welding quality is improved.)

1. A method of welding, comprising:

obtaining an actual wire feeding resistance value in the welding process; and

based on the actual wire feeding resistance value, the wire feeding power assisting device is controlled to provide a wire feeding power assisting value which is in positive correlation with the actual wire feeding resistance value.

2. The welding method of claim 1, wherein obtaining an actual wire feed resistance value during the welding process comprises:

obtaining a standard wire feeding resistance value in a standard welding state;

obtaining a standard wire feeding current value in a standard welding state, wherein the standard welding state is defined as that a wire feeder is in a normal working condition;

obtaining the actual current value of the wire feeder in the welding process;

according to formula F₁＝k₁(i-I)+F₀Calculating the actual wire feeding resistance value;

wherein, F₁The actual wire feeding resistance value is obtained; k is a radical of₁Is the wire feed resistance coefficient; i is the actual current value of the wire feeder; f₀Is a standard wire feeding resistance value; and I is a standard wire feeding current value.

3. The welding method of claim 2, wherein obtaining a standard wire feed current value for a standard weld condition comprises:

storing different said standard wire feed current values corresponding to different operating currents of the welding power supply in advance in the welding power supply;

and correspondingly obtaining the standard wire feeding current value corresponding to the working current according to the different working currents.

4. The welding method of claim 1, wherein controlling the wire feed assist device to provide a wire feed assist value in a positive correlation with the actual wire feed resistance value based on the actual wire feed resistance value comprises:

according to the formula F-k F₁+F₂Calculating the wire feeding assisting value;

wherein F is a wire feeding assisting value; k is the wire feeding assistance coefficient; f₁The actual wire feeding resistance value is obtained; f₂Is the wire feed assist constant.

5. A welding system, comprising:

a wire feeder;

the wire feeding power assisting device is connected with the wire feeder and is used for providing wire feeding power assistance for the wire feeder; and

the control device is in signal connection with the wire feeding assisting device and can control the wire feeding assisting device to provide a wire feeding assisting value which is in positive correlation with the actual wire feeding resisting value according to the obtained actual wire feeding resisting value.

6. The welding system of claim 5, wherein the control device comprises a data acquisition unit configured to obtain an actual current value of the wire feeder, a storage unit configured to store a standard wire feed resistance value and a standard wire feed current value for a standard welding condition, and a control unit configured to adjust the wire feed assist value provided by the wire feed assist device.

7. The welding system of claim 6, further comprising a welding power source coupled to the wire feeder;

the data acquisition unit, the storage unit and the control unit are arranged on the welding power supply.

8. The welding system of claim 5, further comprising a gas storage unit coupled to the wire feeder to provide shielding gas to the wire feeder.

9. An electronic device, comprising:

a processor; and

a memory for storing executable instructions of the processor;

wherein the processor is configured to perform the welding method of any of claims 1-4 via execution of the executable instructions.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the welding method according to any one of claims 1 to 4.

Technical Field

The embodiment of the invention relates to the technical field of welding, in particular to a welding method and system, electronic equipment and a storage medium.

Background

In the welding process, the stability of wire feeding is an important link for ensuring the welding quality. However, as the wire feed distance increases, the wire feed stability also decreases. When the wire feeding distance reaches a certain length, the phenomenon of unstable electric arc occurs in the welding process due to unstable wire feeding because of overlarge wire feeding resistance, so that welding defects such as air holes, undercut, incomplete fusion and the like are generated. Therefore, in the case of a remote wire feed, it is often necessary to add a wire assist. The wire feeding power assisting device is an extra wire feeding device for assisting the wire feeding mechanism to feed wires, plays a role in increasing wire feeding force and reducing wire feeding resistance of the wire feeder, contributes to stable wire feeding of the wire feeder, and contributes to improving welding quality.

In the related art, a welding engineer is usually required to manually adjust the wire feeding assistance of the wire feeding assistance device according to welding experience, and the adjustment mode is time-consuming and difficult to ensure the stability of wire feeding.

Disclosure of Invention

The embodiment of the invention provides a welding method and system, electronic equipment and a storage medium, and aims to solve the problems that adjustment is time-consuming and wire feeding stability cannot be guaranteed in the related technology.

The welding method provided by the embodiment of the invention comprises the following steps:

obtaining an actual wire feeding resistance value in the welding process; and

based on the actual wire feeding resistance value, the wire feeding power assisting device is controlled to provide a wire feeding power assisting value which is in positive correlation with the actual wire feeding resistance value.

According to some embodiments of the invention, obtaining an actual wire feed resistance value during the welding process comprises:

obtaining a standard wire feeding resistance value in a standard welding state;

obtaining a standard wire feeding current value in a standard welding state, wherein the standard welding state is defined as that a wire feeder is in a normal working condition;

obtaining the actual current value of the wire feeder in the welding process;

according to formula F₁＝k₁(i-I)+F₀Calculating the actual wire feeding resistance value;

wherein, F₁The actual wire feeding resistance value is obtained; k is a radical of₁Is the wire feed resistance coefficient; i is the actual current value of the wire feeder；F₀Is a standard wire feeding resistance value; and I is a standard wire feeding current value.

According to some embodiments of the invention, obtaining a standard wire feed current value under a standard welding condition comprises:

storing different said standard wire feed current values corresponding to different operating currents of the welding power supply in advance in the welding power supply;

and correspondingly obtaining the standard wire feeding current value corresponding to the working current according to the different working currents.

According to some embodiments of the present invention, controlling the wire feeding assist device to provide a wire feeding assist value in a positive correlation with the actual wire feeding resistance value based on the actual wire feeding resistance value comprises:

according to the formula F-k F₁+F₂Calculating the wire feeding assisting value;

wherein F is a wire feeding assisting value; k is the wire feeding assistance coefficient; f₁The actual wire feeding resistance value is obtained; f₂Is the wire feed assist constant.

The welding system of the embodiment of the invention comprises:

a wire feeder;

the wire feeding power assisting device is connected with the wire feeder and is used for providing wire feeding power assistance for the wire feeder; and

the control device is in signal connection with the wire feeding assisting device and can control the wire feeding assisting device to provide a wire feeding assisting value which is in positive correlation with the actual wire feeding resisting value according to the obtained actual wire feeding resisting value.

According to some embodiments of the present invention, the control device comprises a data acquisition unit, a storage unit and a control unit, wherein the data acquisition unit is used for acquiring an actual current value of the wire feeder, the storage unit is used for storing a standard wire feeding resistance value and a standard wire feeding current value in a standard welding state, and the control unit is used for adjusting the wire feeding power value provided by the wire feeding power assisting device.

According to some embodiments of the present invention, the welding system further comprises a welding power supply coupled to the wire feeder;

the data acquisition unit, the storage unit and the control unit are arranged on the welding power supply.

According to some embodiments of the invention, the welding system further comprises a gas storage unit coupled to the wire feeder to provide shielding gas to the wire feeder.

The electronic device of the embodiment of the invention comprises:

a processor; and

a memory for storing executable instructions of the processor;

wherein the processor is configured to perform any of the welding methods described above via execution of the executable instructions.

A computer-readable storage medium of an embodiment of the invention has stored thereon a computer program which, when executed by a processor, implements the welding method of any of the above.

One embodiment of the above invention has at least the following advantages or benefits:

the embodiment of the invention provides a welding method, which can automatically adjust the wire feeding force of a wire feeding power assisting device, on one hand, avoid the complex process of manually adjusting the wire feeding power assisting device by welding personnel, on the other hand, improve the adjusting precision of the wire feeding power assisting device and the stability of the wire feeding process, and further improve the welding quality.

Drawings

Fig. 1 shows a flow chart of a welding method according to an embodiment of the invention.

Fig. 2 shows a flowchart of step S2 of the present invention.

FIG. 3 shows a schematic view of a welding system in accordance with an embodiment of the present invention.

Fig. 4 shows a schematic view of an electronic device according to an embodiment of the invention.

FIG. 5 is a schematic diagram of a program product according to an embodiment of the invention.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

As described in the background art, in the related art, the welding engineer manually adjusts the wire feeding assistance value of the wire feeding assistance device according to the welding experience, so as to achieve the effect of stable wire feeding and further achieve the purpose of improving the welding quality.

However, in an actual welding production process, it is often difficult to perform effective adjustment due to lack of adjustment experience of a welder or a welding engineer, so that the welding process is unstable. For example, if the force adjustment of the wire feed assist is large, this may cause the welding wire to easily accumulate at the wire feeder. If the force adjustment of the wire feeding power assisting device is smaller, the wire feeding resistance is difficult to overcome, and the wire feeding assisting device cannot play a role in assisting wire feeding.

The inventor of the present invention found in research that when the wire feeding distance is longer, the actual current value output by the wire feeder becomes larger in order to ensure the wire feeding stability of the wire feeder. Whether the boosting force provided by the wire feeding boosting device is proper or not can be known by monitoring the actual current value output by the wire feeding machine.

Based on the above, the embodiment of the invention provides a welding method, which can automatically adjust the wire feeding force of a wire feeding power assisting device, on one hand, avoid the complex process of manually adjusting the wire feeding power assisting device by welding staff, on the other hand, improve the adjustment precision of the wire feeding power assisting device and the stability of the wire feeding process, and further improve the welding quality.

As shown in fig. 1, fig. 1 is a flow chart illustrating a welding method according to an embodiment of the present invention. The welding method of the embodiment of the invention comprises the following steps:

step S1, obtaining an actual wire feeding resistance value in the welding process;

and step S2, controlling the wire feeding power assisting device to provide a wire feeding power assisting value which is positively correlated with the actual wire feeding resistance value based on the actual wire feeding resistance value.

It should be noted that, during the welding process, the influence factors of the resistance of the welding wire in the wire feeding hose include, but are not limited to: the inner diameter of the wire feed hose, the material of the wire feed hose, the degree of bending of the welding wire, the degree of bending of the wire feed hose, and the like. Specifically, the matching degree of the diameter of the welding wire and the inner diameter of the hose influences the wire feeding resistance, the inner diameter of the hose is too small, the contact area between the welding wire and the inner wall of the hose is increased, and the wire feeding resistance is increased; in addition, if metal chips or other impurities are trapped in the hose, the wire feed resistance is also increased. If the inner diameter of the hose is too large, the welding wire advances in the hose in a wave shape, and the wire feeding resistance is increased in the wire feeding process.

The friction coefficient of the wire feed hose material influences the wire feed resistance, e.g. the smaller the friction coefficient, the less the resistance to the wire feed.

Finally, the greater the degree of bending of the wire and hose, the greater the wire feed resistance.

Based on the above factors affecting the wire feeding resistance, the inventors of the present invention concluded a positive correlation between the wire feeding assistance value and the actual wire feeding resistance value, as follows:

F＝k F₁+F₂；

wherein F is a wire feeding assistance value, k is a wire feeding assistance coefficient, F₁For the actual wire feed resistance value, F₂Is the wire feed assist constant.

After obtaining the actual wire feeding resistance value F₁Under the condition of (3), the wire feeding assisting value F can be calculated according to the formula, wherein the wire feeding assisting value F is the wire feeding assisting force which needs to be provided for the wire feeder by the wire feeding assisting device so as to increase the wire feeding force and maintain the wire feeding stability.

In one embodiment, as shown in FIG. 2, FIG. 2 is a flowchart of step S2 of the present invention. In step S2, obtaining the actual wire feed resistance value during the welding process includes:

step S21, obtaining a standard wire feeding resistance value in a standard welding state;

step S22, obtaining a standard wire feeding current value in a standard welding state, wherein the standard welding state is defined as that the wire feeder is in a normal working condition;

step S23, obtaining the actual current value of the wire feeder in the welding process; according to formula F₁＝k₁(i-I)+F₀Calculating an actual wire feeding resistance value;

wherein, F₁The actual wire feeding resistance value is obtained; k is a radical of₁Is the wire feed resistance coefficient; i is the actual current value of the wire feeder; f₀Is a standard wire feeding resistance value; and I is a standard wire feeding current value.

The standard wire feeding resistance value and the standard wire feeding current value in the standard welding state refer to: and under the normal working condition, the current value and the resistance value corresponding to the wire feeder. For example, the welding power source is connected to the wire feeder, if the wire feeding distance of the wire feeder is set to be 3m, the wire feeder and the welding power source are applied to a welding condition where the wire feeding distance is 3m, at this time, the current value correspondingly output by the wire feeder is the standard wire feeding current value, and the resistance value in the wire feeding system is the standard wire feeding resistance value at this time. The set wire feeding distance is the wire feeding distance recommended by the wire feeder when the wire feeder leaves the factory.

It will be appreciated that under normal operating conditions, the actual wire feed distance of the wire feeder is equal to its set wire feed distance, and there is no output current increase of the wire feeder to maintain wire feed stability. Thus, under normal operating conditions, the actual wire feeder current value I is equal to the standard wire feeder current value I. Then according to the above formula F₁＝k₁(i-I)+F₀Can yield F₁＝F₀Then the actual wire feeding resistance value F₁Is a standard wire feeding resistance value F₀At this time, the wire feeding assisting value of the wire feeding assisting device does not need to be adjusted.

As mentioned above, when the wire feeding distance is increased, the current value output by the wire feeder becomes larger and the actual current value i becomes larger in order to ensure the stability of wire feeding of the wire feeder, then the formula F is used to obtain the actual current value i₁＝k₁(i-I)+F₀Can obtain F₁The specific numerical value of (1). Based on actual wire feeding resistance value F₁And according to the formula F-k F₁+F₂The wire feeding assisting value F can be obtained.

The actual current value i output by the wire feeder is dynamically changed according to different welding conditions, such as different welding positions, such as horizontal welding, vertical welding, overhead welding and the like, different welding wire materials, or different materials and bending degrees of the wire feeding hose. The welding method of the embodiment of the invention obtains the actual current value i in real time and obtains the actual current value i according to the formula F₁＝k₁(i-I)+F₀And F is k F₁+F₂And calculating the wire feeding assisting value F in real time. Like this, just can dynamic adjustment send a helping hand value F that the booster unit provided, and then ensure the stability of sending a silk, avoid sending a helping hand value to take place to bigger than normal or the condition of littleer, improved the supplementary precision of sending a silk of a booster unit.

Of course, it is understood that the standard wire feed current value I is not always constant, and may vary according to different gears of the welding power source. In one embodiment, obtaining a standard wire feed current value for a standard weld condition comprises: storing different standard wire feed current values corresponding to different operating currents of the welding power supply in advance; and correspondingly obtaining a standard wire feeding current value corresponding to the working current according to different working currents.

When the factors of the workpiece to be welded, the welding position and the like are different, a welder can output different working currents by adjusting different gears of the current value of the welding power supply. The working current of each gear corresponds to a standard wire feeding current value. Generally, the higher the operating current of the welding power source, the higher the standard wire feed current value corresponding thereto.

In the actual welding process, different standard wire feeding current values corresponding to different working currents of the welding power supply can be stored in the welding power supply in advance, and when a welder selects the working currents of different gears, the standard wire feeding current values are changed accordingly.

Referring to fig. 3, fig. 3 is a schematic diagram of a welding system 100 according to an embodiment of the present invention. The welding system 100 of the present embodiment includes a welding power source 110, a welding gun 120, a wire feeder 130, a wire assist device 140, a wire feeder 150, and a gas storage unit 160.

The welding power supply 110, wire feeder 130, and welding gun 120 form a welding circuit capable of welding a workpiece 200. The wire assist assembly 140 is coupled to the wire feeder 130 and configured to provide wire assist to the wire feeder 130. The wire feeder 150 is coupled to the wire feed assist 140 to provide welding wire to the wire feed assist 140. The gas storage unit 160 is connected to the wire feeder 130, and is used for providing the shielding gas to the wire feeder 130. The control device 170 is in signal connection with the wire feeder 130 and the wire feeding power assisting device 140, and can control the wire feeding power assisting device 140 to provide a wire feeding power assisting value in positive correlation with the actual wire feeding resistance value according to the obtained actual wire feeding resistance value.

The control device 170 includes a data acquisition unit 171, a storage unit 172 and a control unit 173, the data acquisition unit 171 is used for obtaining the actual current value of the wire feeder 130, the storage unit 172 stores the standard wire feeding resistance value and the standard wire feeding current value in the standard welding state, and the control unit 173 is used for adjusting the wire feeding assistance value provided by the wire feeding assistance device 140. The data acquisition unit 171, the storage unit 172, and the control unit 173 are provided at the welding power supply 110.

As shown in fig. 4, fig. 4 is a schematic diagram of an electronic device according to an embodiment of the present invention. An electronic device includes a processor and a memory. The memory is used for storing executable instructions of the processor; wherein the processor is configured to perform the welding method of any of the above via execution of the executable instructions.

An electronic device 800 according to this embodiment of the invention is described below with reference to fig. 4. The electronic device 800 shown in fig. 4 is only an example and should not bring any limitations to the function and scope of use of the embodiments of the present invention.

As shown in fig. 4, the electronic device 800 is in the form of a general purpose computing device. The components of the electronic device 800 may include, but are not limited to: the at least one processing unit 810, the at least one memory unit 820, and a bus 830 that couples the various system components including the memory unit 820 and the processing unit 810.

Wherein the storage unit stores program code that is executable by the processing unit 810 to cause the processing unit 810 to perform steps according to various exemplary embodiments of the present invention as described in the above section "exemplary methods" of the present specification. For example, the processing unit 810 may execute S1 shown in fig. 1 to obtain an actual wire feed resistance value during welding; and S2, controlling the wire feeding power assisting device to provide a wire feeding power assisting value which is positively correlated with the actual wire feeding resistance value based on the actual wire feeding resistance value.

The storage unit 820 may include readable media in the form of volatile memory units such as a random access memory unit (RAM)8201 and/or a cache memory unit 8202, and may further include a read only memory unit (ROM) 8203.

The storage unit 820 may also include a program/utility 8204 having a set (at least one) of program modules 8205, such program modules 8205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.

Bus 830 may be any of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

The electronic device 800 may also communicate with one or more external devices 700 (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 800, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device 800 to communicate with one or more other computing devices. Such communication may occur via input/output (I/O) interfaces 850. Also, the electronic device 800 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) via the network adapter 860. As shown, the network adapter 860 communicates with the other modules of the electronic device 800 via the bus 830. It should be appreciated that although not shown, other hardware and/or software modules may be used in conjunction with the electronic device 800, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.

Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.

As shown in fig. 5, fig. 5 is a schematic diagram of a program product according to an embodiment of the invention. A computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, realizes the welding method of any of the above.

In an exemplary embodiment of the present disclosure, there is also provided a computer-readable storage medium having stored thereon a program product capable of implementing the above-described method of the present specification. In some possible embodiments, aspects of the invention may also be implemented in the form of a program product comprising program code means for causing a terminal device to carry out the steps according to various exemplary embodiments of the invention described in the above section "exemplary methods" of the present description, when said program product is run on the terminal device.

Referring to fig. 5, a program product 900 for implementing the above method according to an embodiment of the present invention is described, which may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited in this regard and, in the present document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

A computer readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).

It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.

Moreover, although the steps of the methods of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that the steps must be performed in this particular order, or that all of the depicted steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.

Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.

In the embodiments of the invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. Specific meanings of the above terms in the embodiments of the invention may be understood by those of ordinary skill in the art according to specific situations.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present invention.

In the description herein, reference to the term "one embodiment," "some embodiments," "a specific embodiment," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are merely preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the embodiments of the invention should be included in the protection scope of the embodiments of the invention.