Disclosure of Invention
In view of the foregoing, it is desirable to provide an industrial internet tag parsing method, an apparatus and an electronic device to solve the problem that information is easily leaked due to easy parsing of an industrial internet tag.
The first aspect of the present invention provides an industrial internet tag parsing method applied to a terminal device, the industrial internet tag parsing method including:
acquiring scanning information obtained by scanning industrial internet labels of articles through a scanner;
sending the scanning information to a first label analysis server so that the first label analysis server can identify the scanning information to obtain the public information of the article and the character code to be analyzed, and sending the character code to be analyzed to a second label analysis server;
receiving the public information of the article sent by the first label analysis server;
receiving the confidential information of the article obtained by identifying the character code to be analyzed by the second label analysis server;
and combining the public information of the article and the secret information of the article to obtain a final identification result of the industrial internet label, and displaying the final identification result.
Optionally, the sending the scanning information to the first tag resolution server includes:
and sending the scanning information to an industry management platform so that the industry management platform checks the scanning information to verify the uniqueness of the scanning information, and sending an analysis request containing the scanning information to the first label analysis server after the scanning information has the uniqueness.
Optionally, the scanning information includes a first sub-code and a second sub-code, the first sub-code represents public information of the article, and the second sub-code is the character code to be parsed.
Optionally, the method further comprises:
sending the first sub-code to the first tag analysis server, so that the first tag analysis server searches a first relation table stored in the first tag analysis server according to the first sub-code, and determines the public information of the article corresponding to the first sub-code, wherein the first relation table defines the corresponding relation between different first sub-codes and the public information of different articles.
Optionally, the method further comprises:
sending the identity of the terminal device to the first tag resolution server, so that the first tag resolution server sends the identity of the terminal device to the second tag resolution server;
and receiving the confidential information of the article, which is obtained by identifying the character code to be analyzed after the identity identification of the terminal device is verified by the second label analysis server.
Optionally, the receiving the confidential information of the article, which is obtained by identifying the character code to be analyzed after the second tag analysis server verifies the identity of the terminal device, includes:
and sending the second sub-code to the second tag analysis server through the first tag server, so that the second tag analysis server searches a second relation table to determine the secret information of the article corresponding to the second sub-code after the identity authentication of the terminal device is passed, wherein the second relation table is stored in the second tag analysis server, and the second relation table defines the corresponding relation between different second sub-codes and secret information of different articles.
Optionally, the character code to be analyzed is encrypted content, and the receiving of the confidential information of the article, which is obtained by identifying the character code to be analyzed after the second tag analysis server verifies the identity of the terminal device, includes:
and receiving the confidential information of the object corresponding to the decrypted character code to be analyzed after the second label analysis server passes the identity identification verification of the terminal device and decrypts the character code to be analyzed.
Optionally, the scanning information is a character code address.
A second aspect of the present invention provides an industrial internet tag resolution apparatus, including:
the acquisition module is used for acquiring scanning information obtained by scanning industrial internet labels of the articles through the scanner;
the analysis module is used for sending the scanning information to a first label analysis server so that the first label analysis server can identify the scanning information to obtain the public information of the article and the character code to be analyzed, and sending the character code to be analyzed to a second label analysis server;
the first receiving module is used for receiving the public information of the article sent by the first label analysis server;
the second receiving module is used for receiving the confidential information of the article obtained by identifying the character code to be analyzed by the second label analysis server;
and the merging module is used for merging the public information of the article and the secret information of the article to obtain a final identification result of the industrial internet label and displaying the final identification result. A third aspect of the present invention provides an electronic device, which includes a processor and a memory, and the processor is configured to implement the industrial internet tag resolution method as described above when executing the computer program stored in the memory.
The scanning information is sent to the first label analysis server, the first label analysis server identifies the scanning information to obtain the analyzed open information of the article and the character code to be analyzed, the second label analysis server sends the character code to be analyzed to the second label analysis server to analyze the secret information of the article, and the open information of the article and the secret information of the article are spliced to obtain the final identification result, so that the problem that the industrial internet label is easy to analyze to cause information leakage is solved.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a detailed description of the present invention will be given below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Preferably, the industrial internet tag resolution of the present invention is applied in one or more electronic devices. The electronic device is a device capable of automatically performing numerical calculation and/or information processing according to a preset or stored instruction, and the hardware includes, but is not limited to, a microprocessor, an Application Specific Integrated Circuit (ASIC), a Programmable Gate Array (FPGA), a Digital Signal Processor (DSP), an embedded device, and the like.
The electronic device may be a desktop computer, a notebook computer, a tablet computer, a cloud server, or other computing device. The device can be in man-machine interaction with a user through a keyboard, a mouse, a remote controller, a touch pad or voice control equipment and the like.
Example 1
Referring to fig. 1, an application environment diagram of an industrial internet tag parsing method according to an embodiment of the present invention is shown. The industrial internet label coding method is applied to a terminal device 1, and the terminal device 1 is in communication connection with a first label analysis server 2, a second label analysis server 3 and an industry management platform 4. Referring to fig. 2, a flowchart of an industrial internet tag parsing method according to an embodiment of the invention is shown. The order of the steps in the flow chart may be changed and some steps may be omitted according to different needs.
Referring to fig. 2, the method for resolving an industrial internet tag is applied to the terminal device 1, and specifically includes the following steps.
In step S201, the terminal device 1 obtains scanning information obtained by scanning an industrial internet tag of an article by a scanner, and sends the scanning information to the first tag analysis server 2.
In this embodiment, the article may be an article to be processed, a part, or a finished product. The industrial internet label of the article can be a radio frequency identification label, a two-dimensional code or a bar code. In this embodiment, the scanner scans the rfid tag, the two-dimensional code, or the barcode to obtain the scanning information. In this embodiment, the scanning information is a character code address.
In this embodiment, the scan information includes at least public information of the article and secret information of the article. For example, the public information of the article includes, but is not limited to, the country of manufacture of the article, the manufacturer of the article, the code of the article in the national industry catalog, the name of the article, the name of the industry where the article is located, and the identification number of the article. The confidential information of the article includes, but is not limited to, material purchasing information, quality inspection information, technical parameter information, process flow information, assembly information, factory inspection information, sales information, maintenance failure information, production requirement information, and attribute information of the article.
Step S202, the first tag resolution server 2 identifies the scan information to obtain the public information of the resolved article and the character code to be resolved, where the character code to be resolved includes the secret information of the article.
In this embodiment, the first label analysis server 2 is a top node of a country. In this embodiment, the confidential information of the article is encrypted information. The first tag analysis server 2 can analyze the public information of the article from the scanning information, and cannot analyze the secret information of the article from the scanning information.
In this embodiment, the scan information includes a first sub-code and a second sub-code. The first sub-code is used for representing public information of the article, and the second sub-code is used for representing secret information of the article. The second sub-code is the character code to be analyzed.
The terminal device 1 sends a first sub-code to the first tag analysis server 2, the first tag analysis server 2 searches a first relation table according to the first sub-code in the scanning information, and determines the public information of the article corresponding to the first sub-code, wherein the first relation table is stored in the first tag analysis server 2, and the first relation table defines the corresponding relation between different first sub-codes and the public information of different articles. For example, the scan information is "88.120.1.0101" (the middle dot number is a separator of public information), the first sub-code is "88.120", the second sub-code is "1.0101", the first tag analysis server 2 searches the first relationship table after acquiring the character string of "88.120" and determines that the public information of the article corresponding to "88.120" is "the country of manufacture of the article XX", and the manufacturer of the article XX ". The first tag analysis server 2 transmits the public information of the article and the first sub-code "1.0101" that is not analyzed to the terminal device 1.
In this embodiment, the method further includes: the terminal device 1 sends the scanning information to an industry management platform 4, the industry management platform 4 examines and verifies the scanning information to verify the uniqueness of the scanning information, and sends an analysis request containing the scanning information to the first label analysis server 2 after the scanning information has the uniqueness, and the first label analysis server 2 identifies the scanning information to obtain the public information of the analyzed article and the character code to be analyzed. In this embodiment, the industry management platform 2 is an industry node, such as an industry cloud server.
In step S203, the first tag analysis server 2 sends the public information of the article to the terminal device 1, and sends the character code to be analyzed to the second tag analysis server 3.
Step S204, the second tag resolution server 3 identifies the character code to be resolved to obtain the confidential information of the item, and sends the confidential information of the item to the terminal device 1.
In this embodiment, the method further includes: the first tag resolution server 2 is further configured to obtain an identity of the terminal device 1, and send the identity to the second tag resolution server 3; and the second label analysis server 3 identifies the character code to be analyzed after the identity identification of the terminal device 1 is verified, so as to obtain the confidential information of the article.
In one embodiment, the second tag resolution server 3 verifies whether the identity of the terminal device 1 is consistent with the authority identity information. If the identity of the terminal device 1 is consistent with the authority identity information, the second tag analysis server 3 determines that the identity of the terminal device passes the verification, and identifies the character code to be analyzed to obtain the secret information of the article; if the identity of the terminal device 1 is inconsistent with the authority identity information, the second tag resolution server 3 determines that the identity verification of the terminal device fails, and does not recognize the character code to be resolved of the terminal device 1 and returns recognition failure information.
In this embodiment, the second tag analysis server 3 searches the second relationship table to determine the confidential information of the item corresponding to the character code to be analyzed when determining that the identity authentication of the terminal device passes, and sends the confidential information of the item to the terminal device 1. The second label analysis server 3 stores the second relation table, and the second relation table defines the corresponding relation between different character codes to be analyzed and the secret information of different articles. For example, the character code to be analyzed is "1.0101" (the middle point number is a separator of the confidential information), the second tag analysis server 3 searches the second relationship table after acquiring the character string of "1.0101" to determine that the confidential information of the item corresponding to "1.0101" is "the type of the item is XX", and the material of the item is XX ". The second tag analysis server 3 transmits the confidential information of the article to the terminal device 1.
In an embodiment, the character code to be parsed is encrypted content, the second tag parsing server 3 further decrypts the character code to be parsed when determining that the identity authentication of the terminal device 1 passes, searches a second relation table after decrypting the character code to be parsed, determines the secret information of the item corresponding to the decrypted character code to be parsed, and sends the secret information of the item to the code scanning terminal 1.
Step S205, the terminal device 1 splices the public information of the article and the secret information of the article to obtain a final identification result of the industrial internet tag, and displays the final identification result.
In this embodiment, the attribute in the confidential information of the article includes, but is not limited to, a type attribute, a material attribute, a shape attribute, an application field attribute, a size attribute, and an identification attribute. In this embodiment, the target may be a precision tool. The attribute values of the type attributes of the precision tool include, but are not limited to, a tool, a die, a jig, a grinder, an abrasive. The property values of the material properties of the precision tool include, but are not limited to, tool steel, cemented carbide, ceramic cutters. For example, the tool steel may be a carbon tool steel, an alloy tool steel, or a high speed tool steel. The hard alloy can be tungsten cobalt, tungsten titanium cobalt and tungsten titanium tantalum (niobium) cobalt. When the precision tool is a cutter, the attribute values of the shape attribute of the cutter include, but are not limited to, a nose cutter, a T-shaped cutter, a chamfering cutter, an outer circular cutter, an inner hole cutter, an inner grooving cutter, an outer grooving cutter, an inverse cutter, an end face cutter, an inner threading cutter, an outer threading cutter, a profiling cutter, an outer circular cutter, an inner hole cutter, a cutter, and a threading cutter. In this embodiment, the application domain attributes include, but are not limited to, automotive, electronics, and aerospace.
Example 2
Fig. 3 is a block diagram of an industrial internet tag analysis device 30 according to an embodiment of the present invention.
In some embodiments, the industrial internet tag resolution apparatus 30 may include a plurality of functional modules composed of program code segments. Program codes of respective program segments in the industrial internet tag resolution device 30 may be stored in the memory and executed by the at least one processor to perform the functions of industrial internet tag encoding.
In this embodiment, the industrial internet tag resolution device 30 may be divided into a plurality of functional modules according to the functions performed by the device. Referring to fig. 3, the industrial internet tag parsing apparatus 30 may include an obtaining module 301, a parsing module 302, a first receiving module 303, a second receiving module 304, and a merging module 305. The module referred to herein is a series of computer program segments capable of being executed by at least one processor and capable of performing a fixed function and is stored in memory. In some embodiments, the functionality of the modules will be described in greater detail in subsequent embodiments.
The obtaining module 301 is configured to obtain scanning information obtained by scanning an industrial internet tag of an article through a scanner.
The parsing module 302 is configured to send the scanning information to a first tag parsing server 2, so that the first tag parsing server 2 identifies the scanning information to obtain public information of an article and a character code to be parsed, and sends the character code to be parsed to a second tag parsing server 3.
In this embodiment, the article may be an article to be processed, a part, or a finished product. The industrial internet label of the article can be a radio frequency identification label, a two-dimensional code or a bar code. In this embodiment, the scanner scans the rfid tag, the two-dimensional code, or the barcode to obtain the scanning information. In this embodiment, the scanning information is a character code address.
In this embodiment, the scan information includes at least public information of the article and secret information of the article. For example, the public information of the article includes, but is not limited to, the country of manufacture of the article, the manufacturer of the article, the code of the article in the national industry catalog, the name of the article, the name of the industry where the article is located, and the identification number of the article. The confidential information of the article includes, but is not limited to, material purchasing information, quality inspection information, technical parameter information, process flow information, assembly information, factory inspection information, sales information, maintenance failure information, production requirement information, and attribute information of the article.
In this embodiment, the first label analysis server 2 is a top node of a country. In this embodiment, the confidential information of the article is encrypted information. The first tag analysis server 2 analyzes the public information of the article from the scanning information, and cannot analyze the secret information of the article from the scanning information.
In this embodiment, the scan information includes a first sub-code and a second sub-code. The first sub-code is used for representing public information of the article, and the second sub-code is used for representing secret information of the article. The second sub-code is the character code to be analyzed.
The first tag analysis server 2 searches a first relation table according to a first sub-code in the scanning information, and determines the public information of the article corresponding to the first sub-code, wherein the first relation table is stored in the first tag analysis server 2, and the first relation table defines the corresponding relation between different first sub-codes and the public information of different articles. For example, the scan information is "88.120.1.0101" (the middle dot number is a separator of public information), the first sub-code is "88.120", the second sub-code is "1.0101", the first tag analysis server 2 searches the first relationship table after acquiring the character string of "88.120" and determines that the public information of the article corresponding to "88.120" is "the country of manufacture of the article XX", and the manufacturer of the article XX ". The first tag analysis server 2 transmits the public information of the article and the first sub-code "1.0101" that is not analyzed to the terminal device 1.
In this embodiment, the parsing module 302 is further configured to send the scan information to an industry management platform 4, where the industry management platform 4 checks the scan information to verify the uniqueness of the scan information, and sends an parsing request including the scan information to the first tag parsing server 2 after the scan information has the uniqueness, where the first tag parsing server 2 identifies the scan information to obtain the public information of the parsed article and the character code to be parsed. In this embodiment, the industry management platform 2 is an industry node, such as an industry cloud server. The first tag resolution server 2 sends the public information of the article and the character code to be resolved to the second tag resolution server 3. The first receiving module 303 receives the public information of the article sent by the first tag resolution server 2.
The second tag analysis server 3 identifies the character code to be analyzed to obtain the confidential information of the article, and sends the confidential information of the article to the terminal device 1.
The second receiving module 304 receives the confidential information of the article obtained by identifying the character code to be analyzed by the second tag analysis server 3.
The first tag resolution server 2 acquires the identity of the terminal device 1 from the scanning information and sends the identity to the second tag resolution server 3; and the second label analysis server 3 identifies the character code to be analyzed after the identity identification of the terminal device 1 is verified, so as to obtain the confidential information of the article.
In one embodiment, the second tag resolution server 3 verifies whether the identity of the terminal device 1 is consistent with the authority identity information. If the identity of the terminal device 1 is consistent with the authority identity information, the second tag analysis server 3 determines that the identity of the terminal device 1 passes the verification, and identifies the character code to be analyzed to obtain the secret information of the article; if the identity of the terminal device 1 is inconsistent with the authority identity information, the second tag resolution server 3 determines that the identity of the terminal device 1 is not verified, does not identify the character code to be resolved of the terminal device 1, and returns identification failure information.
In this embodiment, the second tag analysis server 3 searches the second relationship table to determine the confidential information of the item corresponding to the character code to be analyzed when determining that the identity of the terminal device 1 passes the authority verification, and sends the confidential information of the item to the terminal device 1. The second label analysis server 3 stores the second relation table, and the second relation table defines the corresponding relation between different character codes to be analyzed and the secret information of different articles. For example, the character code to be analyzed is "1.0101" (the middle point number is a separator of the confidential information), the second tag analysis server 3 obtains the character string of "1.0101" and then searches the second relationship table to determine that the confidential information of the item corresponding to "1.0101" is "the type of the item is XX" and the material of the item is XX ". The second tag analysis server 3 transmits the confidential information of the article to the terminal device 1.
In an embodiment, the character code to be parsed is encrypted content, the second tag parsing server 3 further decrypts the character code to be parsed when determining that the identity authentication of the terminal device 1 passes, searches a second relation table after decrypting the character code to be parsed, determines the secret information of the item corresponding to the decrypted character code to be parsed, and sends the secret information of the item to the code scanning terminal 1.
A merging module 305, configured to merge the public information of the article and the secret information of the article to obtain a final identification result of the industrial internet tag, and display the final identification result.
In this embodiment, the attribute in the confidential information of the article includes, but is not limited to, a type attribute, a material attribute, a shape attribute, an application field attribute, a size attribute, and an identification attribute. In this embodiment, the target may be a precision tool. The attribute values of the type attributes of the precision tool include, but are not limited to, a tool, a die, a jig, a grinder, an abrasive. The property values of the material properties of the precision tool include, but are not limited to, tool steel, cemented carbide, ceramic cutters. For example, the tool steel may be a carbon tool steel, an alloy tool steel, or a high speed tool steel. The hard alloy can be tungsten cobalt, tungsten titanium cobalt and tungsten titanium tantalum (niobium) cobalt. When the precision tool is a cutter, the attribute values of the shape attribute of the cutter include, but are not limited to, a nose cutter, a T-shaped cutter, a chamfering cutter, an outer circular cutter, an inner hole cutter, an inner grooving cutter, an outer grooving cutter, an inverse cutter, an end face cutter, an inner threading cutter, an outer threading cutter, a profiling cutter, an outer circular cutter, an inner hole cutter, a cutter, and a threading cutter. In this embodiment, the application domain attributes include, but are not limited to, automotive, electronics, and aerospace.
According to the method, the scanning information is sent to the first label analysis server 2, the first label analysis server 2 identifies the scanning information to obtain the analyzed open information of the article and the character code to be analyzed, the second label analysis server 2 sends the character code to be analyzed to the second label analysis server to analyze the secret information of the article, and the open information of the article and the secret information of the article are spliced to obtain a final identification result, so that the problem that the industrial internet label is easy to analyze and information is easy to leak is solved.
Example 3
Fig. 4 is a schematic diagram of the electronic device 10 according to an embodiment of the invention.
The electronic device 10 comprises a memory 14, a processor 15 and a computer program 16 stored in the memory 14 and executable on the processor 15. The processor 15, when executing the computer program 16, implements the steps in the above-mentioned embodiment of the industrial internet tag parsing method, for example, steps S201 to S205 shown in fig. 2. Alternatively, the processor 15, when executing the computer program 16, implements the functions of the modules/units in the above-mentioned embodiment of the industrial internet tag resolution apparatus, such as the modules 301 to 305 in fig. 3.
Illustratively, the computer program 16 may be partitioned into one or more modules/units that are stored in the memory 14 and executed by the processor 15 to implement the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 16 in the electronic device 10. For example, the computer program 16 may be divided into a first sending module 301, a first parsing module 302, a second sending module 303, a second parsing module 304 and a merging module 305 in fig. 3, and the specific functions of the modules are described in embodiment 2.
Those skilled in the art will appreciate that the diagram is merely an example of the electronic device 10 and does not constitute a limitation of the electronic device 10 and may include more or less components than those shown, or some components may be combined, or different components, for example, the electronic device 10 may also include input-output devices, network access devices, buses, etc. In the present embodiment, the electronic device 10 may include the terminal device 1, the first tag analysis server 2, the second tag analysis server 3, and the industry management platform 4.
The Processor 15 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor 15 may be any conventional processor or the like, the processor 15 being the control center of the electronic device 10, and various interfaces and lines connecting the various parts of the overall electronic device 10.
The memory 14 may be used for storing the computer program 16 and/or the module/unit, and the processor 15 may implement various functions of the electronic device 10 by running or executing the computer program and/or the module/unit stored in the memory 14 and calling data stored in the memory 14. The memory 14 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the stored data area may store data (such as audio data, a phonebook, etc.) created according to the use of the electronic device 10, and the like. In addition, the memory 14 may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
The integrated modules/units of the electronic device 10, if implemented in the form of software functional modules and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and which, when executed by a processor, may implement the steps of the above-described embodiments of the method. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
In the embodiments provided in the present invention, it should be understood that the disclosed electronic device and method can be implemented in other ways. For example, the above-described embodiments of the electronic device are merely illustrative, and for example, the division of the modules is only one logical functional division, and there may be other divisions when the actual implementation is performed.
In addition, each functional module in each embodiment of the present invention may be integrated into the same processing module, or each module may exist alone physically, or two or more modules may be integrated into the same module. The integrated module can be realized in a hardware form, and can also be realized in a form of hardware and a software functional module.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is to be understood that the word "comprising" does not exclude other modules or steps, and the singular does not exclude the plural. Several modules or electronic devices recited in the electronic device claims may also be implemented by one and the same module or electronic device by means of software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.