CN113867249A - Multi-PLC protocol analysis method, system and medium for data acquisition of cloud-edge cooperative equipment - Google Patents
Multi-PLC protocol analysis method, system and medium for data acquisition of cloud-edge cooperative equipment Download PDFInfo
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- CN113867249A CN113867249A CN202111145241.1A CN202111145241A CN113867249A CN 113867249 A CN113867249 A CN 113867249A CN 202111145241 A CN202111145241 A CN 202111145241A CN 113867249 A CN113867249 A CN 113867249A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/15—Plc structure of the system
- G05B2219/15028—Controller and device have several formats and protocols, select common one
Abstract
The invention discloses a multi-PLC protocol analysis method, a multi-PLC protocol analysis system and a multi-PLC protocol analysis medium for data acquisition of cloud-edge cooperative equipment, which can be applied to the technical field of Internet of things. The method comprises the following steps: acquiring PLC basic information and PLC header data; determining a target PLC protocol type in a PLC protocol intelligent adaptation module according to the PLC packet header data; calling a PLC protocol analysis interface in a PLC protocol analysis library to carry out PLC protocol analysis according to the PLC basic information and the target PLC protocol type to obtain target PLC protocol information; the PLC protocol intelligent adaptation module is arranged on the industrial intelligent gateway equipment; the PLC protocol analysis library is arranged on the industrial cloud platform; the industrial cloud platform is connected with the PLC of the industrial equipment through the industrial intelligent gateway equipment. According to the invention, communication between the PLC and the cloud platform can be realized without an engineer surveying and confirming the PLC model and the protocol information of the industrial equipment on site.
Description
Technical Field
The invention relates to the technical field of Internet of things, in particular to a multi-PLC protocol analysis method, a multi-PLC protocol analysis system and a multi-PLC protocol analysis medium for data acquisition of cloud-side cooperative equipment.
Background
In the equipment data acquisition application scene in the fields of industrial Internet of things and intelligent manufacturing, an industrial cloud platform is connected with a PLC (programmable logic controller) of industrial equipment through industrial intelligent gateway equipment so as to analyze a protocol and acquire data, and then the functions of processing, equipment health degree analysis, fault early warning and the like are performed according to acquired data. In the related technology, since communication protocols of numerous industrial communication protocols, different manufacturers and different types of PLCs are not uniform and are not compatible with each other, an engineer needs to perform on-site investigation and confirm the model and protocol information of the PLCs of the industrial equipment, and then a corresponding PLC protocol analysis program is pre-installed by the manufacturer when the industrial intelligent gateway equipment leaves a factory according to the specific model and protocol information of the PLCs.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a multi-PLC protocol analysis method, a multi-PLC protocol analysis system and a multi-PLC protocol analysis medium for data acquisition of cloud-side cooperative equipment, and real-time monitoring of industrial equipment can be completed without pre-installing a corresponding PLC protocol analysis program when industrial intelligent gateway equipment leaves a factory.
On one hand, the embodiment of the invention provides a multi-PLC protocol analysis method for data acquisition of cloud-edge cooperative equipment, which comprises the following steps:
acquiring PLC basic information and PLC header data;
determining a target PLC protocol type in a PLC protocol intelligent adaptation module according to the PLC packet header data;
calling a PLC protocol analysis interface in a PLC protocol analysis library to carry out PLC protocol analysis according to the PLC basic information and the target PLC protocol type to obtain target PLC protocol information;
the PLC protocol intelligent adaptation module is arranged on industrial intelligent gateway equipment; the PLC protocol analysis library is arranged on the industrial cloud platform; and the industrial cloud platform is connected with the PLC of the industrial equipment through the industrial intelligent gateway equipment.
In some embodiments, the PLC base information includes PLC manufacturer information and a PLC model.
In some embodiments, the determining, in the PLC protocol intelligent adaptation module, the target PLC protocol type according to the PLC packet header data includes:
comparing the PLC packet header data with packet header data preset in a PLC protocol intelligent adaptation module;
acquiring at least one approximate PLC protocol with a comparison result meeting preset requirements;
and testing and verifying the at least one approximate PLC protocol to obtain the type of the target PLC protocol.
In some embodiments, the industrial intelligent gateway device is a gateway server or an edge server.
In some embodiments, the industrial intelligent gateway device is connected to the PLC through a serial port or an ethernet interface.
On the other hand, an embodiment of the present invention provides a multi-PLC protocol analysis system for data acquisition of cloud-side cooperative devices, including:
the system comprises an industrial cloud platform, a PLC protocol analysis library and a plurality of PLC protocol analysis interfaces, wherein the industrial cloud platform is internally provided with the PLC protocol analysis library;
the industrial cloud platform is connected with a PLC (programmable logic controller) of the industrial equipment through the industrial intelligent gateway equipment; wherein the industrial intelligent gateway device is configured to perform the following steps:
collecting PLC basic information and PLC header data;
determining a target PLC protocol type in a PLC protocol intelligent adaptation module according to the PLC packet header data;
and calling a PLC protocol analysis interface in a PLC protocol analysis library to carry out PLC protocol analysis according to the PLC basic information and the target PLC protocol type to obtain target PLC protocol information.
In some embodiments, the industrial intelligent gateway device is a gateway server or an edge server.
In some embodiments, the industrial intelligent gateway device is connected to the PLC through a serial port or an ethernet interface.
On the other hand, an embodiment of the present invention provides a multi-PLC protocol analysis system for data acquisition of cloud-side cooperative devices, including:
at least one memory for storing a program;
and the at least one processor is used for loading the program to execute the multi-PLC protocol analysis method for the data acquisition of the cloud-edge cooperative equipment.
In another aspect, an embodiment of the present invention provides a storage medium, in which a computer-executable program is stored, and the computer-executable program is executed by a processor to implement the above-mentioned multi-PLC protocol parsing method for data acquisition of cloud-edge cooperative devices.
The multi-PLC protocol analysis method for data acquisition of the cloud-side cooperative equipment, provided by the embodiment of the invention, has the following beneficial effects:
according to the embodiment, the intelligent PLC protocol adaptation module is arranged in the industrial intelligent gateway device, the PLC protocol analysis library is arranged on the industrial cloud platform, the PLC protocol analysis interface is arranged in the PLC protocol analysis library, the target PLC protocol type is determined in the intelligent PLC protocol adaptation module according to the acquired PLC header data, the PLC protocol analysis interface in the PLC protocol analysis library is called to carry out PLC protocol analysis according to the acquired PLC basic information and the target PLC protocol type, and the target PLC protocol information is obtained.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
fig. 1 is a flowchart of a multi-PLC protocol analysis method for data acquisition of cloud-side cooperative equipment according to an embodiment of the present invention;
fig. 2 is a block diagram of a multi-PLC protocol parsing system for data acquisition of cloud-side cooperative equipment according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an application process of a multi-PLC protocol analysis system for data acquisition of cloud-side cooperative equipment according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a PLC protocol intelligent adaptation module according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present 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 or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
At present, industrial communication protocols are numerous, such as Modbus, Profibus, Profinet, EtherNET, CC-Link, PPI, OPC UA and the like, and different types of protocols are incompatible with each other. Therefore, in the processes of data processing, health analysis, fault early warning and the like of the equipment where the PLC is located, the industrial cloud platform cannot be quickly and effectively connected with the industrial intelligent gateway equipment of the equipment where the PLC is located, and therefore data acquired by the PLC cannot be acquired.
Based on this, the embodiment of the present invention provides a multi-PLC protocol analysis method for data acquisition of cloud-side cooperative devices, and in this embodiment, through the cloud-side cooperative method, multi-protocol intelligent adaptation and protocol analysis of PLCs of different manufacturers or different types are implemented, so as to implement convenient, flexible and intelligent data acquisition and data processing of various types of industrial devices and communication protocols.
Specifically, as shown in fig. 1, the method of the present embodiment includes the following steps:
and S11, acquiring PLC basic information and PLC header data.
In the embodiment of the application, the PLC is a programmable logic controller, and is a digital arithmetic operation electronic system specially involved for automation control in an industrial environment. The PLC basic information comprises PLC manufacturer information and a PLC model.
And S12, determining the target PLC protocol type in the PLC protocol intelligent adaptation module according to the PLC packet header data.
In the embodiment of the application, the PLC header data is input to the PLC protocol intelligent adaptation module, so that the PLC protocol intelligent adaptation module compares the PLC header data with the preset header data, and obtains at least one approximate PLC protocol whose comparison result meets the preset requirement, that is, obtains at least one approximate PLC protocol corresponding to the preset header data that is closer to the PLC header data, and then tests and verifies the at least one approximate PLC protocol, and uses a type corresponding to the approximate PLC protocol that passes the test and verification as a target PLC protocol type.
And S13, calling a PLC protocol analysis interface in a PLC protocol analysis library to carry out PLC protocol analysis according to the PLC basic information and the target PLC protocol type, and obtaining target PLC protocol information.
In this embodiment, according to the model number of the PLC in the PLC basic information and the protocol type of the PLC, a corresponding PLC protocol analysis interface in the PLC protocol analysis library is called to analyze the PLC protocol, so as to obtain target PLC protocol information, so that the industrial cloud platform can establish a connection with the corresponding PLC in real time and efficiently according to the target PLC protocol information.
In some embodiments, the method shown in fig. 1 is applied to an industrial intelligent gateway device of the system shown in fig. 2, and specifically, the multi-PLC protocol parsing system for data collection of cloud-side cooperative devices shown in fig. 2 further includes an industrial cloud platform. The industrial cloud platform is internally provided with a PLC protocol analysis library, and the PLC protocol analysis library is provided with a plurality of PLC protocol analysis interfaces API; be equipped with PLC agreement intelligence adaptation module in the intelligent gateway equipment of industry, industry cloud platform passes through the PLC of the intelligent gateway equipment of industry connection industrial equipment. In this embodiment, the industrial intelligent gateway device is a gateway server or an edge server; the industrial intelligent gateway equipment is connected with the PLC through a serial port or an Ethernet interface.
In some embodiments, as shown in fig. 3, taking industrial equipment including siemens PLC and mitsubishi PLC as an example, the industrial intelligent gateway equipment adopts an industrial intelligent gateway, a PLC protocol parsing interface call, a PLC protocol intelligent adaptation module, and a connection layer composed of firmware, an operating system layer, and a container are arranged in the industrial intelligent gateway, a PLC protocol parsing library is arranged in a cloud platform interacting with the industrial intelligent gateway, and a plurality of APIs such as siemens PLC protocol parsing capability API and mitsubishi PLC protocol parsing capability API are arranged in the PLC protocol parsing library. As shown in fig. 4, a PLC basic information obtaining module, a PLC data packet reading module, a PLC data packet header comparison analysis module, and a PLC protocol adaptation verifying module are disposed in the PLC protocol intelligent adaptation module. The PLC basic information acquisition module is used for acquiring Siemens PLC information in the industrial equipment and Mitsubishi PLC information in the numerical control machine tool.
In the application process of the modules shown in fig. 3 and 4, the PLC protocol intelligent adaptation module is connected to a PLC interface on the industrial device through a network interface such as a serial port or an ethernet port. The PLC basic information comprises information such as PLC manufacturers and types on the equipment, and the PLC manufacturers or the types can be selected through the PLC list. The PLC protocol intelligent adaptation module reads a section of data packet header data of a PLC through a network interface, analyzes packet header information of a data packet, combines PLC basic information, intelligently compares the data packet header data with data packet headers of common PLC protocols, sequentially outputs one to three similar PLC protocols according to the matching degree, then tests, verifies and analyzes the similar PLC protocols by reading a plurality of data packets, and finally matches and outputs specific PLC protocol information.
In summary, in this embodiment, by adding a middleware module of a PLC protocol analysis library to the cloud platform and adding a PLC protocol intelligent adaptation module to the edge-side industrial intelligent gateway or the edge server, the PLC communication protocol of the industrial device is intelligently analyzed and identified, and accordingly, the corresponding PLC protocol analysis capability in the PLC protocol analysis library of the cloud platform is called, so as to implement intelligent adaptation and protocol analysis of multiple PLC protocols.
The content of the embodiment of the method of the invention is all applicable to the embodiment of the system, the function of the embodiment of the system is the same as the embodiment of the method, and the beneficial effect achieved by the embodiment of the system is the same as the beneficial effect achieved by the method.
The embodiment of the invention provides a multi-PLC protocol analysis system for data acquisition of cloud-edge cooperative equipment, which comprises:
at least one memory for storing a program;
at least one processor, configured to load the program to perform the multi-PLC protocol parsing method for data collection of the cloud-edge cooperative device shown in fig. 1.
The content of the method embodiment of the present invention is applicable to the apparatus embodiment, the functions specifically implemented by the apparatus embodiment are the same as those of the method embodiment, and the beneficial effects achieved by the apparatus embodiment are also the same as those achieved by the method.
An embodiment of the present invention provides a storage medium, in which a computer-executable program is stored, and the computer-executable program is executed by a processor to implement the method for analyzing multiple PLC protocols for data acquisition of cloud-edge cooperative devices shown in fig. 1.
Embodiments of the present invention also provide a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The computer instructions may be read by a processor of a computer device from a computer-readable storage medium, and executed by the processor to cause the computer device to perform the method illustrated in fig. 1.
In alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flow charts of the present invention are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and in which sub-operations described as part of larger operations are performed independently.
Furthermore, although the present invention is described in the context of functional modules, it should be understood that, unless otherwise stated to the contrary, one or more of the described functions and/or features may be integrated in a single physical device and/or software module, or one or more functions and/or features may be implemented in a separate physical device or software module. It will also be appreciated that a detailed discussion of the actual implementation of each module is not necessary for an understanding of the present invention. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be understood within the ordinary skill of an engineer, given the nature, function, and internal relationship of the modules. Accordingly, those skilled in the art can, using ordinary skill, practice the invention as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative of and not intended to limit the scope of the invention, which is defined by the appended claims and their full scope of equivalents.
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 computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes 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 invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. A multi-PLC protocol analysis method for data acquisition of cloud-edge cooperative equipment is characterized by comprising the following steps:
acquiring PLC basic information and PLC header data;
determining a target PLC protocol type in a PLC protocol intelligent adaptation module according to the PLC packet header data;
calling a PLC protocol analysis interface in a PLC protocol analysis library to carry out PLC protocol analysis according to the PLC basic information and the target PLC protocol type to obtain target PLC protocol information;
the PLC protocol intelligent adaptation module is arranged on industrial intelligent gateway equipment; the PLC protocol analysis library is arranged on the industrial cloud platform; and the industrial cloud platform is connected with the PLC of the industrial equipment through the industrial intelligent gateway equipment.
2. The method of claim 1, wherein the PLC base information comprises PLC manufacturer information and PLC model.
3. The method of claim 1, wherein the determining a target PLC protocol type in a PLC protocol intelligent adaptation module according to the PLC packet header data comprises:
comparing the PLC packet header data with packet header data preset in a PLC protocol intelligent adaptation module;
acquiring at least one approximate PLC protocol with a comparison result meeting preset requirements;
and testing and verifying the at least one approximate PLC protocol to obtain the type of the target PLC protocol.
4. The multi-PLC protocol parsing method for data collection of cloud-edge cooperative equipment according to claim 1, wherein the industrial intelligent gateway device is a gateway server or an edge server.
5. The multi-PLC protocol analysis method for data collection of the cloud-edge cooperative device according to claim 4, wherein the industrial intelligent gateway device is connected to the PLC through a serial port or an Ethernet interface.
6. The utility model provides a many PLC protocol analytic system of cloud limit collaborative equipment data acquisition which characterized in that includes:
the system comprises an industrial cloud platform, a PLC protocol analysis library and a plurality of PLC protocol analysis interfaces, wherein the industrial cloud platform is internally provided with the PLC protocol analysis library;
the industrial cloud platform is connected with a PLC (programmable logic controller) of the industrial equipment through the industrial intelligent gateway equipment; wherein the industrial intelligent gateway device is configured to perform the following steps:
collecting PLC basic information and PLC header data;
determining a target PLC protocol type in a PLC protocol intelligent adaptation module according to the PLC packet header data;
and calling a PLC protocol analysis interface in a PLC protocol analysis library to carry out PLC protocol analysis according to the PLC basic information and the target PLC protocol type to obtain target PLC protocol information.
7. The multi-PLC protocol parsing system for data collection of cloud-side cooperative equipment according to claim 6, wherein the industrial intelligent gateway device is a gateway server or an edge server.
8. The multi-PLC protocol analysis system for data collection of cloud-side cooperative equipment according to claim 6, wherein the industrial intelligent gateway device is connected to the PLC through a serial port or an Ethernet interface.
9. The utility model provides a many PLC protocol analytic system of cloud limit collaborative equipment data acquisition which characterized in that includes:
at least one memory for storing a program;
at least one processor configured to load the program to perform the multi-PLC protocol parsing method for data collection of the cloud-edge cooperative device according to any one of claims 1 to 5.
10. A storage medium having a computer-executable program stored therein, wherein the computer-executable program is used for implementing the multi-PLC protocol parsing method for data collection of cloud-edge cooperative device according to any one of claims 1 to 5 when executed by a processor.
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