CN112153079B - Reference gateway device and method for industrial internet gateway test - Google Patents
Reference gateway device and method for industrial internet gateway test Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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Abstract
The invention provides a reference gateway device and a method for industrial internet gateway test, wherein the reference gateway is connected with a data generator to receive a test data packet packaged by the data generator; the test data packet is internally provided with an identification algorithm unit block; the identification algorithm unit block records identification algorithms; the reference gateway identifies the communication protocol used by the test data packet and the communication protocol packet in the test data packet through an identification algorithm, performs network connection according to the identified communication protocol, analyzes and executes the test task in the communication protocol packet by a protocol analysis method in the communication protocol, takes the execution result data as industrial data to be output, converts the industrial data into an output data packet based on a standard protocol and sends the output data packet to a subsequent data processing link; the invention can test the function and performance of the gateway more intuitively and contrastively and is used for solving the technical problems that the existing gateway test is not unified, the standard test mode is unavailable and the maturity can not meet the market demand.
Description
Technical Field
The invention relates to the technical field of equipment testing, in particular to a reference gateway device and a method for industrial internet gateway testing.
Background
The industrial internet gateway is a link for connecting an industrial equipment network and a communication network, and plays a very important role in the edge side of the whole internet platform. The gateway is an inter-network connector of the industrial equipment, and can realize the connection between the network of the industrial equipment and a communication network, thereby improving the capability of mutual cooperation between the equipment; the gateway is also an industrial equipment protocol converter, and can convert protocols between different types of industrial equipment networks. The gateway can realize wide area interconnection and local area interconnection, has the functions of collecting data, analyzing a protocol, guaranteeing information safety and the like, plays a role in starting and stopping, and ensures the operation efficiency of equipment.
With the development of the industrial internet industry, the functions of the existing industrial internet gateway are gradually powerful, so that not only can the monitoring and management of equipment be realized, but also the installation and the deployment of a complex industrial environment can be supported. Manufacturers are continuously accumulating the number of industrial protocols to provide generalized gateway devices and actively exploring more application scenarios of the gateway by adding functions. The influence of the gateway on the industrial internet is gradually deepened, but a unified and standardized testing mode and device for testing the working function of the gateway equipment are still lacked at present, so that the maturity of the gateway equipment in the industrial internet is improved.
In view of this, in order to make an evaluation and specification of the function and performance of the gateway device, the invention provides a reference gateway device and a method for industrial internet gateway testing. The reference gateway not only has all functions required by the current gateway product, but also provides test reference data, and can realize the transmission of industrial data from equipment to a cloud end through protocol analysis and data conversion, so that the functions and the performances of the gateway can be tested more intuitively and contrastively.
Disclosure of Invention
The invention provides a reference gateway device and a reference gateway method for industrial internet gateway testing, which can test the functions and performances of a gateway more intuitively and contrastingly and are used for solving the technical problems that the existing gateway testing is not unified, a standard testing mode is not available and the maturity cannot meet the market demand.
The invention adopts the following technical scheme.
The reference gateway device is used for generating standard data by a reference gateway in industrial Internet gateway test operation, and the reference gateway is connected with a data generator to receive a test data packet packaged by the data generator; the test data packet is internally provided with a recognition algorithm unit block which can be analyzed by a reference gateway and an industrial internet gateway; the identification algorithm unit block records an identification algorithm for identifying a data structure of the test data packet; after receiving the test data packet, the reference gateway identifies the communication protocol used by the test data packet and the communication protocol packet in the test data packet through an identification algorithm, performs network connection according to the identified communication protocol, analyzes and executes the test task in the communication protocol packet by using a protocol analysis method in the communication protocol, takes the execution result data of the test task as industrial data to be output by the reference gateway, converts the industrial data into an output data packet based on a standard protocol through a data conversion algorithm, and sends the output data packet to a subsequent data processing link.
The reference gateway is connected with equipment in a subsequent data processing link by a cloud access method; the equipment in the subsequent data processing link comprises a database at a cloud server; and the cloud server performs data processing and display on an output data packet which is sent by the reference gateway and is based on a standard protocol, so as to form standard data which can be used for the test reference of the tested industrial internet gateway.
The type of the communication protocol for testing comprises a field bus network protocol, an industrial Ethernet protocol or an industrial wireless protocol; the data generator encapsulates the test data packet by a protocol driving method; in the protocol driving method, each recognition algorithm unit block seals one recognition algorithm.
The protocol analysis method in the communication protocol for testing specifically comprises the following steps: the reference gateway extracts required information from the test data packet according to the format of the communication protocol for the test identified by the identification algorithm; the operation method adopted when extracting the information comprises protocol adaptation, key parameter extraction, data interception or data temporary storage;
the formats of the communication protocol for testing comprise a target data length field format, a load starting address field format, a header field format, a source address MAC field format, a destination address MAC field format, an Ethernet type field format and IP address information.
And when the reference gateway executes the protocol analysis method, the protocol analysis algorithm is realized by executing the configured protocol analysis logic.
The data conversion algorithm comprises high-low byte conversion, range conversion, square root conversion and logarithmic conversion; the data conversion algorithm built in the reference gateway can be upgraded by appending or iterating.
The cloud access method is that a reference gateway uploads a standard protocol packet to a public cloud or a private cloud through a wide area network or local area network router, and the cloud access technology adopted by the cloud access method is based on HTTP communication, MQTT communication or WebSocket protocol;
if the cloud access method is based on HTTP communication, when the reference gateway establishes connection with the cloud application, a login request is generated through HTTP, and a JSON format character string is returned after login is successful, wherein the JSON format character string comprises a user ID and a signature; the JSON uses the global variable to store the data for subsequent HTTP request, login verification is carried out again, the character string of success is returned successfully, and at the moment, the connection returns a correct value successfully;
if the cloud access method is based on MQTT communication, when the reference gateway establishes connection with the cloud application, the access method is a lightweight communication protocol based on a client-server publishing/subscribing mode, and the protocol is established on a TCP/IP protocol; under the method, the MQTT communication between the reference gateway and the cloud server is also realized based on a client-server mode; the communication process is based on TCP long connection, firstly, long connection is established with an MQTT server, then a login request is sent, and if the long connection is required to be kept, a heartbeat packet needs to be sent at regular time to keep the connection with the server;
and if the cloud access method is based on the Websocket protocol, using the Websocket to perform long connection.
And when the data generator sends a test data packet to the reference gateway, the data generator sends the test data packet to the tested industrial internet gateway at the same time.
The reference gateway has all functions of the industrial internet gateway to be tested.
A test method for a reference gateway device for industrial Internet gateway test, which uses the reference gateway, comprises the following steps;
step one, after receiving a control instruction, a data generator encapsulates a test data packet based on a communication protocol to be tested according to a test requirement, and sends the test data packet to a reference gateway and a tested industrial internet gateway;
the reference gateway identifies the communication protocol used by the test data packet by an identification algorithm, and completes network connection according to the identified communication protocol;
step two, the reference gateway analyzes the communication protocol packet by a protocol analysis method in the communication protocol;
step three, after the reference gateway analyzes and obtains the test task in the communication protocol packet, the test task is executed on the industrial equipment in the task and the execution result data is obtained, the execution result data is further converted according to the preset standard protocol according to the preset data conversion rule and the application requirement, and the output data of the reference gateway is generated;
and step four, the reference gateway transmits the output data of the reference gateway to a database of the cloud server, and the cloud server performs subsequent data processing and display to generate reference standard data for industrial internet gateway test operation.
Compared with the prior art, the method can test the functions and the performances of the gateway more intuitively and contrastively, and can be used for solving the technical problems that the existing gateway test is not unified, the standard test mode is unavailable, and the maturity cannot meet the market demand.
The invention also has the following beneficial effects:
1. the invention provides a reference gateway device which is used as basic data of data analysis and provides a test data benchmark, so that the test of a gateway is more uniform and standardized.
2. The reference gateway device provided by the invention has all functions required by gateway products, has optimal performance and can be uniformly deployed and allocated.
3. The reference gateway device provided by the invention can conveniently perform function arrangement and upgrade based on a micro-service mode, and follows up the requirement of rapid market change.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic diagram of the principles of the present invention;
FIG. 2 is a schematic diagram of the operation of a reference gateway according to the present invention;
FIG. 3 is a schematic diagram of a protocol parsing method according to the present invention;
fig. 4 is a schematic view of an access flow of the cloud access method based on HTTP communication;
in the figure, 1-data generator; 2-a reference gateway; and 3-industrial internet gateway.
Detailed Description
As shown in the figure, a reference gateway device for industrial internet gateway test is used for a process of generating standard data by a reference gateway in industrial internet gateway test operation, and the reference gateway 2 is connected with a data generator 1 to receive a test data packet packaged by the data generator; the test data packet is internally provided with an identification algorithm unit block which can be analyzed by a reference gateway and an industrial internet gateway 3; the identification algorithm unit block records an identification algorithm for identifying a data structure of the test data packet; after receiving the test data packet, the reference gateway identifies the communication protocol used by the test data packet and the communication protocol packet in the test data packet through an identification algorithm, performs network connection according to the identified communication protocol, analyzes and executes the test task in the communication protocol packet by using a protocol analysis method in the communication protocol, takes the execution result data of the test task as industrial data to be output by the reference gateway, converts the industrial data into an output data packet based on a standard protocol through a data conversion algorithm, and sends the output data packet to a subsequent data processing link.
The reference gateway is connected with equipment in a subsequent data processing link by a cloud access method; the equipment in the subsequent data processing link comprises a database at a cloud server; and the cloud server performs data processing and display on an output data packet which is sent by the reference gateway and is based on a standard protocol, so as to form standard data which can be used for the test reference of the tested industrial internet gateway.
The type of the communication protocol for testing comprises a field bus network protocol, an industrial Ethernet protocol or an industrial wireless protocol; the data generator encapsulates the test data packet by a protocol driving method; in the protocol driving method, each recognition algorithm unit block seals one recognition algorithm.
The protocol analysis method in the communication protocol for testing specifically comprises the following steps: the reference gateway extracts required information from the test data packet according to the format of the communication protocol for the test identified by the identification algorithm; the operation method adopted when extracting the information comprises protocol adaptation, key parameter extraction, data interception or data temporary storage;
the formats of the communication protocol for testing comprise a target data length field format, a load starting address field format, a header field format, a source address MAC field format, a destination address MAC field format, an Ethernet type field format and IP address information.
And when the reference gateway executes the protocol analysis method, the protocol analysis algorithm is realized by executing the configured protocol analysis logic.
The data conversion algorithm comprises high-low byte conversion, range conversion, square root conversion and logarithmic conversion; the data conversion algorithm built in the reference gateway can be upgraded by appending or iterating.
The cloud access method is that a reference gateway uploads a standard protocol packet to a public cloud or a private cloud through a wide area network or local area network router, and the cloud access technology adopted by the cloud access method is based on HTTP communication, MQTT communication or WebSocket protocol;
if the cloud access method is based on HTTP communication, when the reference gateway establishes connection with the cloud application, a login request is generated through HTTP, and a JSON format character string is returned after login is successful, wherein the JSON format character string comprises a user ID and a signature; the JSON uses the global variable to store the data for subsequent HTTP request, login verification is carried out again, the character string of success is returned successfully, and at the moment, the connection returns a correct value successfully;
if the cloud access method is based on MQTT communication, when the reference gateway establishes connection with the cloud application, the access method is a lightweight communication protocol based on a client-server publishing/subscribing mode, and the protocol is established on a TCP/IP protocol; under the method, the MQTT communication between the reference gateway and the cloud server is also realized based on a client-server mode; the communication process is based on TCP long connection, firstly, long connection is established with an MQTT server, then a login request is sent, and if the long connection is required to be kept, a heartbeat packet needs to be sent at regular time to keep the connection with the server;
and if the cloud access method is based on the Websocket protocol, using the Websocket to perform long connection.
And when the data generator sends a test data packet to the reference gateway, the data generator simultaneously sends the test data packet to the tested industrial internet gateway 3.
The reference gateway has all functions of the industrial internet gateway to be tested.
A test method for a reference gateway device for industrial Internet gateway test, which uses the reference gateway, comprises the following steps;
step one, after receiving a control instruction, a data generator encapsulates a test data packet based on a communication protocol to be tested according to a test requirement, and sends the test data packet to a reference gateway and a tested industrial internet gateway;
the reference gateway identifies the communication protocol used by the test data packet by an identification algorithm, and completes network connection according to the identified communication protocol;
step two, the reference gateway analyzes the communication protocol packet by a protocol analysis method in the communication protocol;
step three, after the reference gateway analyzes and obtains the test task in the communication protocol packet, the test task is executed on the industrial equipment in the task and the execution result data is obtained, the execution result data is further converted according to the preset standard protocol according to the preset data conversion rule and the application requirement, and the output data of the reference gateway is generated;
and step four, the reference gateway transmits the output data of the reference gateway to a database of the cloud server, and the cloud server performs subsequent data processing and display to generate reference standard data for industrial internet gateway test operation.
Example (b):
in this example, the reference gateway and the tested gateway receive the test command from the test engineer station at the same time, execute each test task according to the command, and output specific test data according to the actual test result.
Because the test data output by the reference gateway is standard correct data, a tester can perform test evaluation on the gateway to be tested by comparing the output data of the reference gateway and the output data of the gateway to be tested.
In this example, the protocol driving method uses a technique of encapsulating each recognition algorithm as a unit block, and after the main module of the reference gateway acquires the connection instruction, the unit block is deactivated to realize the connection with the communication protocol, and if the unit block is continuously added, rich protocol driving can be realized.
In this example, the protocol analysis technology of the reference gateway implements a protocol analysis algorithm by executing configured protocol analysis logic, thereby improving the efficiency of algorithm development. Therefore, the occupancy rate of calculation, storage and network communication resources can be saved to the greatest extent, the development, operation and maintenance deployment cost is reduced, and the convenience of later-stage expansion and upgrading of the reference gateway is improved.
In this example, the data conversion algorithm used in generating the reference gateway output data includes high-low byte conversion, span conversion, square root conversion, logarithmic conversion, etc. Due to the diversity of the protocols, the data conversion is continuously supplemented, iterated and upgraded, so that the reference gateway can more efficiently and conveniently complete the data format conversion of various protocols.
Claims (10)
1. A reference gateway device facing industrial internet gateway test is used for a process of generating standard data by a reference gateway in industrial internet gateway test operation, and is characterized in that: the reference gateway is connected with the data generator to receive the test data packet packaged by the data generator; the test data packet is internally provided with a recognition algorithm unit block which can be analyzed by a reference gateway and an industrial internet gateway; the identification algorithm unit block records an identification algorithm for identifying a data structure of the test data packet; after receiving the test data packet, the reference gateway identifies the communication protocol used by the test data packet and the communication protocol packet in the test data packet through an identification algorithm, performs network connection according to the identified communication protocol, analyzes and executes the test task in the communication protocol packet by using a protocol analysis method in the communication protocol, takes the execution result data of the test task as industrial data to be output by the reference gateway, converts the industrial data into an output data packet based on a standard protocol through a data conversion algorithm, and sends the output data packet to a subsequent data processing link.
2. The reference gateway device for industrial internet gateway test as claimed in claim 1, wherein: the reference gateway is connected with equipment in a subsequent data processing link by a cloud access method; the equipment in the subsequent data processing link comprises a database at a cloud server; and the cloud server performs data processing and display on an output data packet which is sent by the reference gateway and is based on a standard protocol, so as to form standard data which can be used for the test reference of the tested industrial internet gateway.
3. The reference gateway device for industrial internet gateway test as claimed in claim 1, wherein: the type of the communication protocol for testing comprises a field bus network protocol, an industrial Ethernet protocol or an industrial wireless protocol; the data generator encapsulates the test data packet by a protocol driving method; in the protocol driving method, each recognition algorithm unit block seals one recognition algorithm.
4. The reference gateway device for industrial internet gateway test as claimed in claim 1, wherein: the protocol analysis method in the communication protocol for testing specifically comprises the following steps: the reference gateway extracts required information from the test data packet according to the format of the communication protocol for the test identified by the identification algorithm; the operation method adopted when extracting the information comprises protocol adaptation, key parameter extraction, data interception or data temporary storage;
the formats of the communication protocol for testing comprise a target data length field format, a load starting address field format, a header field format, a source address MAC field format, a destination address MAC field format, an Ethernet type field format and IP address information.
5. The reference gateway device for industrial internet gateway test as claimed in claim 4, wherein: and when the reference gateway executes the protocol analysis method, the protocol analysis algorithm is realized by executing the configured protocol analysis logic.
6. The reference gateway device for industrial internet gateway test as claimed in claim 1, wherein: the data conversion algorithm comprises high-low byte conversion, range conversion, square root conversion and logarithmic conversion; the data conversion algorithm built in the reference gateway can be upgraded by appending or iterating.
7. The reference gateway device for industrial internet gateway test as claimed in claim 2, wherein: the cloud access method is that a reference gateway uploads a standard protocol packet to a public cloud or a private cloud through a wide area network or local area network router, and the cloud access technology adopted by the cloud access method is based on HTTP communication, MQTT communication or WebSocket protocol;
if the cloud access method is based on HTTP communication, when the reference gateway establishes connection with the cloud application, a login request is generated through HTTP, and a JSON format character string is returned after login is successful, wherein the JSON format character string comprises a user ID and a signature; the JSON uses the global variable to store the data for subsequent HTTP request, login verification is carried out again, the character string of success is returned successfully, and at the moment, the connection returns a correct value successfully;
if the cloud access method is based on MQTT communication, when the reference gateway establishes connection with the cloud application, the access method is a lightweight communication protocol based on a client-server publishing/subscribing mode, and the protocol is established on a TCP/IP protocol; under the method, the MQTT communication between the reference gateway and the cloud server is also realized based on a client-server mode; the communication process is based on TCP long connection, firstly, long connection is established with an MQTT server, then a login request is sent, and if the long connection is required to be kept, a heartbeat packet needs to be sent at regular time to keep the connection with the server;
and if the cloud access method is based on the Websocket protocol, using the Websocket to perform long connection.
8. The reference gateway device for industrial internet gateway test as claimed in claim 2, wherein: and when the data generator sends a test data packet to the reference gateway, the data generator sends the test data packet to the tested industrial internet gateway at the same time.
9. The reference gateway device for industrial internet gateway test as claimed in claim 8, wherein: the reference gateway has all functions of the industrial internet gateway to be tested.
10. A test method of a reference gateway device for industrial Internet gateway test is characterized in that: the test method using the reference gateway of claim 8, comprising the steps of;
step one, after receiving a control instruction, a data generator encapsulates a test data packet based on a communication protocol to be tested according to a test requirement, and sends the test data packet to a reference gateway and a tested industrial internet gateway;
the reference gateway identifies the communication protocol used by the test data packet by an identification algorithm, and completes network connection according to the identified communication protocol;
step two, the reference gateway analyzes the communication protocol packet by a protocol analysis method in the communication protocol;
step three, after the reference gateway analyzes and obtains the test task in the communication protocol packet, the test task is executed on the industrial equipment in the task and the execution result data is obtained, the execution result data is further converted according to the preset standard protocol according to the preset data conversion rule and the application requirement, and the output data of the reference gateway is generated;
and step four, the reference gateway transmits the output data of the reference gateway to a database of the cloud server, and the cloud server performs subsequent data processing and display to generate reference standard data for industrial internet gateway test operation.
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| CN101324843A (en) * | 2008-07-16 | 2008-12-17 | 广州复旦奥特科技股份有限公司 | Object model of general-purpose gateway design |
| CN102083123A (en) * | 2011-03-01 | 2011-06-01 | 中国联合网络通信集团有限公司 | Gateway test method, device and system |
| WO2013050823A1 (en) * | 2011-10-06 | 2013-04-11 | Telefonaktiebolaget L M Ericsson (Publ) | Test traffic interceptor in a data network |
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