CN110650384B - 485 module communication test method, 485 module, base meter and module terminal - Google Patents
485 module communication test method, 485 module, base meter and module terminal Download PDFInfo
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- CN110650384B CN110650384B CN201910901615.4A CN201910901615A CN110650384B CN 110650384 B CN110650384 B CN 110650384B CN 201910901615 A CN201910901615 A CN 201910901615A CN 110650384 B CN110650384 B CN 110650384B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/26—Functional testing
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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
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/58—Random or pseudo-random number generators
- G06F7/588—Random number generators, i.e. based on natural stochastic processes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/60—Arrangements in telecontrol or telemetry systems for transmitting utility meters data, i.e. transmission of data from the reader of the utility meter
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Abstract
The embodiment of the invention provides a communication test method of a 485 module, the 485 module, a base table and a module terminal, wherein the method comprises the following steps: the first 485 module is provided with at least two first interfaces; the second 485 module has at least two second interfaces; each first interface and each second interface have a one-to-one correspondence relationship; the first 485 module is in communication connection with the corresponding interface of the second 485 module, and the first 485 module sends a random number to the corresponding second interface through the first interface; the random number is matched with the first interface, and the second 485 module determines whether the communication state of the second interface is abnormal or not according to the correctness of the received random number. A large number of terminals are not used in the test process, the test is more efficient and time-saving, and meanwhile, as the two 485 modules have different clock chips, the provided clock signals are different, the test result is more comparable, and the test stability is improved.
Description
Technical Field
The invention relates to the field of 485 module testing, in particular to a 485 module communication testing method, a 485 module, a base meter and a module terminal.
Background
With the rapid improvement of national economic strength, national power grids develop smart power grids vigorously, the use amount of power terminals of concentrators, special transformers and the like in a centralized meter reading system is continuously increased at present, meter reading of 485 modules occupies an important position in the centralized meter reading system, and meter reading of 485 modules has the advantages of stable signals, strong meter reading feasibility and the like, so that the method has great significance for research of a test method of 485 modules.
The traditional test method is that each path of the 485 module is led out to be connected with a power line to be connected with an ammeter, and whether the 485 module can normally communicate and whether meter reading can be completed is tested in a message sending mode. On the premise of a large number of power utilization terminals, the testing method has the defects of time consumption, labor waste, low reliability and the like, and if two paths of the 485 module are interconnected for testing, because two paths of the 485 module share one clock chip, clock signals provided by the same clock chip are the same, calculated baud rates are also consistent, comparability is not provided, and the testing stability is influenced.
Disclosure of Invention
In view of this, the present invention is directed to a communication testing method for 485 modules, base tables, and module terminals.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, an embodiment of the present invention provides a communication test method for a 485 module, which is applied to a first 485 module and a second 485 module that are in communication connection, where the first 485 module has at least two first interfaces; the second 485 module has at least two second interfaces; each first interface and each second interface have a one-to-one correspondence relationship; the method comprises the following steps:
the first 485 module sends a random number to a corresponding second interface through the first interface; the random number is matched with the first interface;
the second 485 module judges whether the random number is correct or not;
and if so, determining that the communication state of the corresponding second interface is normal.
In an alternative embodiment, the first interface comprises a positive interface and a negative interface, and the second interface comprises a positive interface and a negative interface; the first 485 module sends a random number to a corresponding second interface through the first interface, and the method includes:
the first 485 module sends a random number matched with the positive interface of the first 485 module to the corresponding positive interface of the second 485 module through the positive interface of the first 485 module, or the first 485 module sends a random number matched with the negative interface of the first 485 module to the corresponding negative interface of the second 485 module through the negative interface of the first 485 module.
In an optional embodiment, the 485 modules are all in communication connection with a base table;
the second 485 module sends the random number receiving result to the base table;
and the base table judges whether the correct random number is received or not according to the random number receiving result.
In a second aspect, an embodiment of the present invention provides a 485 module, where a first 485 module is in communication connection with a second 485 module, and the first 485 module has at least two first interfaces; the second 485 module has at least two second interfaces; each first interface and each second interface have a one-to-one correspondence relationship;
the first 485 module is used for sending a random number to a corresponding second interface through the first interface; the random number is matched with the first interface;
the second 485 module is used for judging whether the random number is correct or not; and if so, determining that the communication state of the corresponding second interface is normal.
In an alternative embodiment, the first interface comprises a positive interface and a negative interface, and the second interface comprises a positive interface and a negative interface;
the first 485 module is also used for sending random numbers matched with the positive interface of the first 485 module through the positive interface of the first 485 module to the corresponding positive interface of the second 485 module, and also used for sending random numbers matched with the negative interface of the first 485 module through the negative interface of the first 485 module to the corresponding negative interface of the second 485 module.
In an optional embodiment, the 485 modules are all in communication connection with a base table;
the second 485 module is configured to send the random number reception result to the base table.
In a third aspect, an embodiment of the present invention provides a base table, where the base table is in communication connection with a 485 module;
and the base table is used for receiving a random number receiving result sent by the 485 module.
In an optional embodiment, the base table is further configured to determine whether the correct random number is received according to the random number receiving result.
In a fourth aspect, an embodiment of the present invention provides a module terminal, where the module terminal includes a centralized meter reading system module, a meter reading module, a communication module, the 485 module according to any one of the foregoing embodiments, and the base table according to any one of the foregoing embodiments.
In an alternative embodiment, a processor and a memory are included, the memory storing machine executable instructions executable by the processor to implement the 485 module communication test method of any of claims 1-3.
The embodiment of the invention provides a communication test method of a 485 module, the 485 module, a base table and a module terminal, wherein the method comprises the following steps: the first 485 module is provided with at least two first interfaces; the second 485 module has at least two second interfaces; each first interface and each second interface have a one-to-one correspondence relationship; the first 485 module is in communication connection with the corresponding interface of the second 485 module, and the first 485 module sends a random number to the corresponding second interface through the first interface; the random number is matched with the first interface, and the second 485 module determines whether the communication state of the second interface is abnormal or not according to the correctness of the received random number. A large number of terminals are not used in the test process, the test is more efficient and time-saving, and meanwhile, as the two 485 modules have different clock chips, the provided clock signals are different, the test result is more comparable, and the test stability is improved.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 shows a schematic connection relationship diagram of a 485 module according to an embodiment of the present invention.
Fig. 2 shows a schematic flowchart of a 485 module communication test method according to an embodiment of the present invention.
Fig. 3 shows a schematic flowchart of another 485 module communication test method according to an embodiment of the present invention.
Fig. 4 shows a schematic structural diagram of a module terminal according to an embodiment of the present invention.
Fig. 5 is a block diagram illustrating a module terminal according to an embodiment of the present invention.
Icon: 10-a first 485 module; 12-a positive interface; 14-a negative interface; 20-a second 485 module; 200-a module terminal; 210-a centralized meter reading system module; 220-a meter reading module; 230-a communication module; 240-; 250-base table; 260-a memory; 270-processor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
A485 module and a main control chip of the power terminal are STM32, communication is carried out in a differential communication mode, and two communication lines, namely an A path and a B path, have good anti-interference capability. The traditional test method is that a power line is led out from the A path and the B path of the 485 module respectively to be connected with an ammeter, and whether the 485 module can normally communicate and whether meter reading can be completed is tested in a message sending mode. Because each 485 module has a crystal oscillator, the A path and the B path share one 485 module, and the clock signals provided by the same crystal oscillator are the same, the calculated baud rates are consistent, and therefore, the results measured by the traditional test method are not comparable. According to the 485 module communication test method provided by the invention, the corresponding interfaces of the first 485 module and the second 485 module are in communication connection, and the two 485 modules are provided with two independent crystal oscillators, so that the baud rate can be calibrated mutually, and the problems are avoided.
Fig. 1 is a schematic diagram of a connection relationship between 485 modules according to an embodiment of the present invention.
The first 485 module 10 has four paths, each path includes a positive interface 12 and a negative interface 14, i.e. path a and path B in the figure; the second 485 module 20 has four paths, each including a positive interface and a negative interface, i.e., path a and path B in the figure.
The first 485 module and the second 485 module are in communication connection through a test tool, the test tool is in communication connection with corresponding interfaces of the first 485 module and the second 485 module, as shown in fig. 1, a positive interface of the first 485 module is in communication connection with a positive interface of the second 485 module, and a negative interface of the first 485 module is in communication connection with a negative interface of the second 485 module. The embodiment of the present invention further provides another connection method, where all interfaces of the first 485 module are correspondingly communicatively connected with all interfaces of the second 485 module, or a part of interfaces of the first 485 module are selected to be communicatively connected with corresponding interfaces of the second 485 module, which is not limited herein.
Fig. 2 is a schematic flow chart of a 485 module communication testing method according to an embodiment of the present invention.
And 102, judging whether the random number is correct or not by the second 485 module.
And 103, determining that the communication state of the corresponding second interface is normal.
In this embodiment, the first 485 module sends a random number to the corresponding second interface through the first interface, and the second 485 module determines whether the random number is correct, and determines that the communication state of the corresponding second interface is normal. The two 485 modules are provided with two independent crystal oscillators, and the baud rates can be calibrated mutually, so that the test result has comparability, and the test stability is improved.
On the basis of fig. 2, a possible implementation manner of the complete scheme is given below, and specifically, please refer to fig. 3, which is a schematic flow diagram of another 485 module communication test method provided in this embodiment.
It should be noted that step 101 includes sub-step 101-1, and details of the sub-step are not mentioned in this step.
101-1, the first 485 module sends a random number matched with the positive interface of the first 485 module to the corresponding positive interface of the second 485 module through the positive interface of the first 485 module, or the first 485 module sends a random number matched with the negative interface of the first 485 module to the corresponding negative interface of the second 485 module through the negative interface of the first 485 module.
When writing the software test code of the first 485 module, a unique random number is firstly matched for each interface of the 485 module.
Then opening the first interface and the second interface, and setting baud rates of all the interfaces; and a meter reading lock is established and used for ensuring that only the data of the test 485 module is transmitted, so that the uniqueness of the test data is ensured, and the reliability of the test is improved.
The first 485 module sends the random number to the corresponding second interface through the first interface.
It should be noted that, in this step, the same effect can be achieved if the second 485 module sends the random number to the corresponding first interface through the second interface, and this is not limited here.
And 102, judging whether the random number is correct or not by the second 485 module.
It should be noted that step 101 includes two sub-steps, and details of the sub-steps are not mentioned in this step.
102-1, the second 485 module sends the random number receiving result to the base table.
There are three cases of random number reception: firstly, the random number is not received, secondly, the wrong random number is received, and thirdly, the correct random number is received.
Step 102-2, the base table judges whether the correct random number is received according to the random number receiving result.
If yes, go to step 103; and if not, determining that the communication state of the corresponding second interface is abnormal.
And the base table judges whether the correct random number is received according to the random number receiving result, if the random number sent by the first 485 module is 10 and the random number received by the second 485 module is 01, the communication state of the interface for receiving the random number is judged to be abnormal.
The base table displays the receiving result of the random number on a display screen, and can display the test result of each path, thereby facilitating the positioning of specific problems and facilitating the next operation of testers.
And 103, determining that the communication state of the corresponding second interface is normal.
In summary, the communication test method for the 485 module provided by the embodiment of the present invention includes: the first 485 module is provided with at least two first interfaces; the second 485 module has at least two second interfaces; each first interface and each second interface have a one-to-one correspondence relationship; the first 485 module is in communication connection with the corresponding interface of the second 485 module, and the first 485 module sends a random number to the corresponding second interface through the first interface; the random number is matched with the first interface, and the second 485 module determines whether the communication state of the second interface is abnormal or not according to the correctness of the received random number. A large number of terminals are not used in the test process, the test is more efficient and time-saving, and meanwhile, as the two 485 modules have different clock chips, the provided clock signals are different, the test result is more comparable, and the test stability is improved.
Fig. 4 is a schematic structural diagram of a module terminal according to this embodiment.
The module terminal 200 comprises a centralized meter reading system module 210, a meter reading module 220, a communication module 230, a 485 module 240 and a base meter 250; among them, the communication module 230 includes a 4G module.
Fig. 5 is a block diagram of a module terminal according to an embodiment of the present invention. The module terminal 200 includes a memory 260, a processor 270, and a communication module. The memory 260, the processor 270, and the communication module 230 are electrically connected to each other directly or indirectly to enable data transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines.
Wherein the memory is used for storing programs or data. The Memory may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like.
The processor is used to read/write data or programs stored in the memory and perform corresponding functions.
The communication module is used for establishing communication connection between the server and other communication terminals through the network and is used for receiving and transmitting data through the network.
It should be understood that the structure shown in fig. 5 is only a schematic diagram of the structure of the server, and the module terminal may further include more or less components than those shown in fig. 5, or have a different configuration from that shown in fig. 5. The components shown in fig. 5 may be implemented in hardware, software, or a combination thereof.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. 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 involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules 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 above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A communication test method of a 485 module is applied to a first 485 module and a second 485 module which are in communication connection, and is characterized in that the first 485 module is provided with at least two first interfaces; the second 485 module has at least two second interfaces; each first interface and each second interface have a one-to-one correspondence relationship; the method comprises the following steps:
the first 485 module sends a random number to a corresponding second interface through the first interface; the random number is matched with the first interface;
the second 485 module judges whether the random number is correct or not;
if so, determining that the communication state of the corresponding second interface is normal;
unique matched random numbers are preset in each interface of the first 485 module and the second 485 module;
the first 485 module and the second 485 module are respectively provided with independent crystal oscillators.
2. The method of claim 1, wherein the first interface comprises a positive interface and a negative interface, and wherein the second interface comprises a positive interface and a negative interface; the first 485 module sends a random number to a corresponding second interface through the first interface, and the method includes:
the first 485 module sends a random number matched with the positive interface of the first 485 module to the corresponding positive interface of the second 485 module through the positive interface of the first 485 module, or the first 485 module sends a random number matched with the negative interface of the first 485 module to the corresponding negative interface of the second 485 module through the negative interface of the first 485 module.
3. The method of claim 1, wherein the 485 modules are each communicatively coupled to a base meter;
the second 485 module sends the random number receiving result to the base table;
and the base table judges whether the correct random number is received or not according to the random number receiving result.
4. A485 module is characterized in that a first 485 module is in communication connection with a second 485 module, and the first 485 module is provided with at least two first interfaces; the second 485 module has at least two second interfaces; each first interface and each second interface have a one-to-one correspondence relationship;
the first 485 module is used for sending a random number to a corresponding second interface through the first interface; the random number is matched with the first interface;
the second 485 module is used for judging whether the random number is correct or not; if so, determining that the communication state of the corresponding second interface is normal;
unique matched random numbers are preset in each interface of the first 485 module and the second 485 module;
the first 485 module and the second 485 module are respectively provided with independent crystal oscillators.
5. The 485 module of claim 4, wherein the first interface comprises a positive interface and a negative interface, and the second interface comprises a positive interface and a negative interface;
the first 485 module is also used for sending random numbers matched with the positive interface of the first 485 module through the positive interface of the first 485 module to the corresponding positive interface of the second 485 module, and also used for sending random numbers matched with the negative interface of the first 485 module through the negative interface of the first 485 module to the corresponding negative interface of the second 485 module.
6. The 485 module of claim 4, wherein the 485 modules are each communicatively coupled to a base meter;
the second 485 module is configured to send the random number reception result to the base table.
7. The base table is characterized in that the base table is in communication connection with a 485 module;
the base table is used for receiving the random number receiving result sent by the 485 module after the 485 module adopts the communication test method of any one of claims 1-3.
8. The base table of claim 7,
the base table is further configured to determine whether the correct random number is received according to the random number receiving result.
9. A modular terminal, characterized in that,
the module terminal comprises a centralized meter reading system module, a meter reading module, a communication module, a 485 module according to any one of claims 4-6, and a base meter according to any one of claims 7-8.
10. The modular terminal of claim 9, comprising a processor and a memory, the memory storing machine executable instructions executable by the processor to implement the 485 module communication test method of any of claims 1-3.
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| CN101699299A (en) * | 2009-11-12 | 2010-04-28 | 大连理工大学 | Computer automated measurement method of solid oxide fuel cell (SOFC) electroconductance |
| CN201765279U (en) * | 2009-12-14 | 2011-03-16 | 上海安科瑞电气股份有限公司 | TFT-LCD display-based electric power quality analysis meter |
| CN209265691U (en) * | 2018-11-13 | 2019-08-16 | 中移物联网有限公司 | A kind of test device and test macro |
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| CN101699299A (en) * | 2009-11-12 | 2010-04-28 | 大连理工大学 | Computer automated measurement method of solid oxide fuel cell (SOFC) electroconductance |
| CN201765279U (en) * | 2009-12-14 | 2011-03-16 | 上海安科瑞电气股份有限公司 | TFT-LCD display-based electric power quality analysis meter |
| CN209265691U (en) * | 2018-11-13 | 2019-08-16 | 中移物联网有限公司 | A kind of test device and test macro |
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