CN108322356A - A kind of industrial network gateway compatibility test method based on MQTT - Google Patents
A kind of industrial network gateway compatibility test method based on MQTT Download PDFInfo
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- CN108322356A CN108322356A CN201710041138.XA CN201710041138A CN108322356A CN 108322356 A CN108322356 A CN 108322356A CN 201710041138 A CN201710041138 A CN 201710041138A CN 108322356 A CN108322356 A CN 108322356A
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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
- H04L43/18—Protocol analysers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
- H04L43/04—Processing captured monitoring data, e.g. for logfile generation
- H04L43/045—Processing captured monitoring data, e.g. for logfile generation for graphical visualisation of monitoring data
-
- 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
- H04L43/12—Network monitoring probes
-
- 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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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Mining & Analysis (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention provides a kind of industrial network gateway compatibility test method based on MQTT.Test method is mainly that test server reading field device is sent to the data of tested server by being tested gateway respectively and collects the data of test server by testing gateway, the integrality that the correctness and information that two kinds of data are carried out consistency checking to judge tested industrial gateway protocol analysis are transmitted, in this, as the foundation for judging industrial gateway compatibility.This test method tests the compatibility of industrial gateway in system level.Test gateway encapsulation original object protocol massages are sent to the corresponding agreement theme of MQTT servers, and protocol massages are sent to each protocol analysis process of resolution server by MQTT servers.This method completes the concurrent compatibility test of multi-protocols of gateway using multi-process with MQTT theme subscribing mechanisms, enhances the autgmentability and versatility of the present invention.
Description
Technical field
The present invention relates to industrial gateway test methods, specifically design a kind of industrial gateway compatibility test side based on MQTT
Method belongs to industrial gateway testing field.
Background technology
The gateway device that the compatible numerous industrial network agreements of deployment are needed in new intelligent manufacturing system, so that respectively
Kind isomery industrial network is interconnected by wide area network, and in actual industrial equipment, the old product in part can not access interconnection
Net, or even can not access to LAN, it is therefore desirable to the intelligent gateway device completion that deployment can be compatible with numerous industrial network agreements is different
Communication between network forming network.Industrial intelligent gateway is the important tie that field device is interacted with managed application data-layer, so test work
Industry communication system is to the compatibility of industrial gateway, to ensure integrality that industrial intelligent gateway information transmits and protocol conversion just
True property, it is particularly significant for entire industry communication.Currently, having there is the side of standard universal for the test of agreement itself
Method, but for from system level, to test industrial gateway compatibility, there are no universal methods and flow.Due to now a large amount of old
The limitation of old shop equipment, the present main test method of industrial network gateway compatibility test is also in local gateway and bus
The test of intercommunity is carried out in range, not really by cloud transmission technology and powerful cloud computing Application of competence to measuring technology
System testing always is carried out, with the test system of cloud realizes data sharing, there is information to transmit quick and interactivity
The features such as strong, the direction for pushing measuring technology towards networking, distributivity and opening are developed, and the test side of test system is made
Method is more flexible, and use is easier.
For the specific diversity feature of industrial network, the correctness angle of the integrality transmitted from message and parsing data
A kind of industrial network gateway compatibility test method general based on MQTT is systematically proposed, skill is parsed with remote online data
Art and the MQTT communication technologys carry out industrial gateway compatibility test.
Invention content
The industrial network gateway compatibility test method based on MQTT that the present invention provides a kind of, in the tested communication system of nonintervention
In the case of system, tests system and system under test (SUT) is parallel, equipment under test sends target protocol data frame by RS-485 buses
Give test gateway and tested gateway, test gateway that will be directly packaged after the target protocol message of receiving, subscribed to by MQTT/
Issue mechanism hair is given different agreement classification to packet parsing server and is parsed, and is tested gateway and receives what equipment under test was sent
Valid data are parsed after target protocol data frame be packaged into TCP/IP data messages and be sent to the storage of tested server, into one
Step, test server, which is read, is tested the data that server database receives, and verification analysis is tested the data of server database
The consistency of parsing data is completed with test server to judge tested gateway protocol analysis under industry heterogeneous network environment
The integrality of correctness and process.This method can be used to be tested gateway and be carried out in single protocol conversion and the conversion of a variety of different agreements
Packet Classification test assignment under concurrent communication environment.The Web human-computer interactions of offer of the user by test system are provided
Interface is filed a request to test system, and system generates configuration server test environment according to the test request of user, completes test
After system initialization, test system sends out test command to test gateway, and test gateway is sent out after receiving order to field device
Message request, field device receive target protocol data message to intended gateway and test gateway broadcast data frame, test gateway
Afterwards without parsing, but secondary encapsulation is carried out to data message, the subtests information such as new frame head and agreement label is added
New data message is formed, then is packaged into MQTT message, being sent to resolution server by MQTT servers is parsed, and will be solved
Data after parsing are compared analysis server with the target data of tested server, and whether verify data information is consistent, raw
At test result and report.
It is broadly divided into two parts based on MQTT industrial network gateways test system：Test system and system under test (SUT).Wherein by
Examining system is general industry communication, and equipment under test is industry spot gateway.Test system includes mainly test user's clothes
Business layer and test function supporting layer.Test the interface that user service provides human-computer interaction；Test function supporting layer packet
Include testing execution module and test result analysis module etc..
Field device access industrial scene RS485 buses, are communicated according to the industrial communication protocol of standard.Tested gateway
Single protocol conversion or concurrent multiprotocol conversion are carried out, transformed protocol massages are sent into destination server.Test system
Including testing gateway, test server, MQTT proxy servers.Test gateway, which is responsible for increasing the protocol massages received, to be assisted
Storage is responsible for reading different agreement to the protocol data map section for testing intra-gateway division, MQTT application programs after testing information
The protocol massages of data field are simultaneously sent to corresponding theme in MQTT proxy servers.Test server is responsible for the mark of protocol massages
The consistency discrimination of quasi- parsing and data.The key of gateway transmission data in test system, the Test Network Central Shanxi Plain are added embedded
Operating system, the publish/subscribe mechanism with MQTT proxy servers by the way of multi-process are combined, can realize by survey grid
Close the concurrent test under multi-protocol communication.
Test gateway MQTT programmings：Be divided into connection processing module, theme subscribing module, sending module, receiving module,
Service configuration module and service journal module.Link block：After testing the startup of gateway MQTT programs, read test gateway connection ginseng
Number is established with MQTT proxy servers and is connected, and the interaction data between connection request is handled.Theme subscribing module：According to test
The demand that gateway receives protocol frame subscribes to corresponding agreement theme to MQTT proxy servers, and test gateway is subscribed to all respectively
Agreement theme, to complete the transmission demand of different agreement message.Message transmission module：It receives and is pushed from MQTT proxy servers
Respective protocol theme message, according to test gateway agreement theme subscription transmit the message to the corresponding association of resolution server
View parsing process is handled.Message reception module：Receive the message that MQTT proxy servers send respective gateway number theme.
Service configuration module：Configuration file includes mainly some program running parameters, and MQTT server ip address and port, are determined heartbeat
The various agreement themes of justice and the setting of other functions.
The service interface that test user is provided by Web human-computer interaction interfaces proposes that corresponding test is asked according to testing requirement
It asks, creates test event.
Further, after test equipment is sent test request by test server, test equipment returns to status information, test clothes
State analyze back of business device simultaneously judges whether test system is connected to, if connection, can show the IP address, accordingly for testing gateway
The information such as port, the number of field device and state.
Further, test server sends test command to test gateway, and test gateway passes through RS485 buses as slave station
It is sent to tested field device, field device receives and sends target protocol to bus with broadcast mode after the test command of gateway
Message frame collects the corresponding protocol data map section of intra-gateway, by specified address after test gateway receives protocol massages
Space preserves, and tests the continuous Quick Acquisition field device parameters of gateway, and the data of Gateway Protocol data map section constantly refresh, with
Field device is consistent directly.When tested gateway, which carries out multiple protocol conversion tasks, concurrently to be communicated with field device, test
Gateway should also carry out multitask test, using multitasking mechanism, while receive the data message of multiple communication interfaces, then
Directly fetch evidence from test gateway data map section.Test gateway does not parse the valid data of application layer directly, but
The data of application layer are added into data head and gateway label, port numbers, protocol number and new frame check, then is packaged into MQTT and disappears
Breath.
Further, resolution server according to the analysis protocol of design read message information frame head, to data frame header into
Row verification, satisfactory frame head portion make further parsing, and undesirable frame head just directly abandons data frame.By number
After being verified according to frame head portion, port, number and the analysis protocol for sending message are parsed first.Resolution server starts protocol analysis
Process carries out standard parsing to protocol massages.After completing data message parsing, the data of parsing are sent to database server.
Further, data message is after resolution server parses, and data information is sent to database, and database will be
A link is established in database connection pool.Database needs to safeguard two linked queues simultaneously：Idle queues and team is distributed
Row.After database server receives the data packet parsed, just from free time connect queue in take out one connection, test into
Journey obtains this connection, this connection is put into and has been distributed in connection queue.
Further, test data handles through pictorialization and generates complete test report, is presented by Web human-computer interaction interfaces
To user.
Description of the drawings
Fig. 1 is test server functional schematic provided by the invention.
Fig. 2 is test gateway functional schematic provided by the invention.
Fig. 3 is the format of test gateway encapsulation of data message provided by the invention.
Fig. 4 is test gateway, MQTT proxy servers and test server interactive mode schematic diagram provided by the invention.
Specific implementation mode
Below with reference to attached drawing, the preferred embodiment of the present invention is described in detail, below in conjunction with attached drawing to this
Invention is described in further detail：
As shown in Figure 1, test server includes resolution server and MQTT proxy servers, carrying out practically flow is as follows：
Step 1：It, respectively will be different after MQTT proxy servers receive message of the test gateway transmission with agreement theme
The message that agreement theme receives, the subscription for being sent to test function layer correspond in protocol analysis process；
Step 2：Test function layer starts multi-process, subscribes to agreement theme different in MQTT proxy servers respectively, right
Protocol massages carry out classification reception.Corresponding protocol analysis execution module is sent to be parsed；
Step 3：After cloud resolution server receives data message, pre-parsed processing is carried out first, parses subtest letter
Breath：Data head and gateway label, port numbers, protocol number and new frame check；Data message is parsed according to auxiliary information；Often
One protocol resolution module carries out standard agreement parsing to data message, obtains valid data；
Step 4：After being parsed twice, then the target data for being tested server is read out, obtains target data
Afterwards, consistency checking is carried out to two data.Test server, which is read, is tested the corresponding message information of server, by this datagram
Text with parse outgoing packet is compared, if the two is consistent, be tested gateway protocol conversion function successfully realize that system is simultaneous
Hold this gateway；If it is inconsistent, explanation is tested gateway, there are mistakes, this incompatible gateway of system to need during protocol analysis
It is further perfect to its function.When carrying out multi-protocols concurrent test, test server also carries out concurrent test task and is tested
Card；
Step 5：Target data and parsing data are stored, the uniformity comparison result of the two is analyzed, it is raw
At test report, it is sent to human-computer interaction interface.
It includes data communication layer, compatibility test management level and MQTT application programs to test gateway mainly.MQTT application programs
The classification for being mainly responsible for different agreement message is sent and the reception of test command.Gateway function is tested as shown in Fig. 2, detailed process
It is as follows：
Step 1：Test server sends test command to MQTT proxy server themes, and proxy server sends order
To the test gateway for subscribing to this theme；
Step 2：After tested gateway receives the order, it is tested gateway as slave station, by it by RS485 buses to being used as
The field device of main website sends message request order；
Step 3：Field device is to RS485 buses to test gateway and tested gateway broadcasts protocol data frame；
Step 4：Tested gateway receives protocol data message and forwards it to tested server；Gateway is tested by acquisition
Field device protocol data message carries out secondary encapsulation, and subtest data information is added：Data head and gateway label, port
Number, protocol number and new frame check, as shown in Figure 3.It is encapsulated into ethernet frame or wireless data frame again, is sent to MQTT
The related subject of proxy server.
As shown in figure 4, the pattern that test gateway, MQTT proxy servers, test server interact, field device communication protocols
View selects Modbus agreements, detailed process as follows：
Step 1：Test server issues Modbus protocol number themes to MQTT proxy servers：“Mqtt/Modbus”、
Secondary 001 theme of Used in Subject Gateway number " Mqtt/Modbus/gateway001 " under protocol number theme, broadcast title.And it opens
One Modbus parsings process subscribes to this theme；
Step 2：It tests gateway subscription and subscribes to all agreement themes according to the gateway number of oneself, and connect with test server
It is logical；
Step 3：Test server sends test life to " Mqtt/Modbus/gateway001 " of MQTT proxy servers
It enables, test command is sent to the gateway 001 for subscribing to this theme by MQTT proxy servers；
Step 4：After gateway receives order, the data message of acquisition is encapsulated in MQTT message, is published to MQTT message clothes
" Mqtt/Modbus/gateway001 " theme of business device；
Step 5：The message that gateway is sent is pushed in test server and subscribes to this theme by MQTT proxy servers
Modbus protocol analysis processes.
Claims (5)
1. a kind of industrial network gateway compatibility test method, it is characterised in that：Test the message information of gateway collection site equipment
Test server is uploaded to by MQTT protocol classifications, test server reads field device and is transmitted to by tested gateway again
The data of stratum server, and two kinds of data are subjected to consistency checking, in this, as the foundation to judging industrial gateway compatibility.
2. a kind of industrial network gateway compatibility test method according to claim 1, it is characterised in that：The test system packet
Include test system, system under test (SUT).Test system includes test gateway and test server, and test server is the core of test
Point, it is responsible for target protocol message and the parsing of auxiliary information and the consistency checking of data message；The communication interface packet of gateway
TCP/IP communication interface, RS485 bus communication interfaces are included, the classification for being responsible for protocol massages is sent.System under test (SUT) is i.e. by survey grid
Industry communication where closing.
3. a kind of industrial network gateway compatibility test method according to claim 1, it is characterised in that：Gateway is tested to establish
Agreement subject heading list establishes corresponding data map section for each protocol massages, and MQTT application programs concurrently read different agreement number
According to the message of map section.
4. a kind of industrial network gateway compatibility test method according to claim 1, it is characterised in that：Industrial network agreement
Parsing and data consistency checking carry out in Cloud Server, and protocol analysis includes parsing and the standard agreement solution in subtest domain
Analysis, wherein auxiliary information includes frame head format, label, protocol number, port numbers and new frame check.
5. a kind of industrial network gateway compatibility test method according to claim 1, it is characterised in that：MQTT agency services
Device is that the agreement of each support parsing creates an agreement theme, and resolution system is that each agreement starts a protocol analysis process
Corresponding agreement theme in MQTT proxy servers is subscribed to respectively.
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| CN109460009A (en) * | 2018-12-17 | 2019-03-12 | 国家计算机网络与信息安全管理中心 | A kind of industrial control system reliability test system and test method |
| CN109981435A (en) * | 2019-04-02 | 2019-07-05 | 中安智联未来有限公司 | Turn MQTT gateway and communication system based on CAN-ModBus |
| CN110062004A (en) * | 2019-04-30 | 2019-07-26 | 全球能源互联网研究院有限公司 | A kind of message handling system and method based on Internet of Things fidonetFido |
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| EP3657734A1 (en) * | 2018-11-26 | 2020-05-27 | TEConcept GmbH | Io link scanner and display |
| CN111294250A (en) * | 2018-12-07 | 2020-06-16 | 北京奇虎科技有限公司 | Pressure testing method, device and system |
| CN109460009A (en) * | 2018-12-17 | 2019-03-12 | 国家计算机网络与信息安全管理中心 | A kind of industrial control system reliability test system and test method |
| CN109981435A (en) * | 2019-04-02 | 2019-07-05 | 中安智联未来有限公司 | Turn MQTT gateway and communication system based on CAN-ModBus |
| CN109981435B (en) * | 2019-04-02 | 2021-09-28 | 中安智联未来有限公司 | Gateway and communication system based on CAN-ModBus to MQTT |
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