CN207782829U - The diagnostic device of PROFIBUS-DP communication networks - Google Patents
The diagnostic device of PROFIBUS-DP communication networks Download PDFInfo
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Abstract
The utility model provides a kind of diagnostic device of PROFIBUS DP communication networks, including：Detector, the main website analyzer being electrically connected with detector and the storage unit being electrically connected with main website analyzer.Detector is connected to PROFIBUS DP communication networks, for detecting message and false voltage value in the communication network.Storage unit is for storing fault diagnosis posterior infromation.Analysis result is compared by main website analyzer for analyzing message and false voltage value with the fault diagnosis posterior infromation in storage unit, determines the fault message and/or fault handling information of PROFIBUS DP communication networks.The application memory unit set in the condition diagnosis apparatus utilization of communication network in the utility model, can provide fault message and solution to site examining and repairing and maintenance personnel real-time, greatly reduce malfunction elimination and solve the time.
Description
Technical Field
The utility model relates to a network diagnosis field specifically relates to a diagnostic equipment that is used for field bus distributing type edge PROFIBUS-DP network.
Background
A PROFIBUS-DP (field bus-distributed edge) network, hereinafter referred to as DP network, is designed for Decentralized control or automation control of high-speed devices, and is widely used for periodic and aperiodic data exchange between each subsystem and a main control system in industrial control.
But bus faults caused by shielding layer wiring in the wiring process, substation physical address errors in the debugging process, electromagnetic interference in equipment operation or slip rings, repeaters, DP joints and the like are increasing.
Because bus fault positions in the DP network are usually hidden and difficult to find on site in time, fault positions and fault relevance are poor, troubleshooting uncertainty is large, processing time is long, and a professional DP interception device is required to detect many times, however, most of DP interception devices on the market only provide message interception and communication fault voltage value measurement on the bottom layer at present, and provide interception and measurement results for communication development engineers and operation and maintenance personnel to perform professional analysis and monitoring on the DP network so as to perform communication fault analysis and communication system maintenance on the DP network.
In summary, the existing diagnostic method for the PROFIBUS-DP network cannot obtain effective fault diagnosis information and corresponding solutions, has high requirements on professional knowledge of maintenance personnel performing diagnosis, and is not accurate enough in diagnosis.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a diagnostic equipment of PROFIBUS-DP communication network.
The utility model discloses a PROFIBUS-DP communication network's diagnostic equipment includes: the system comprises a detector, a main station analyzer electrically connected with the detector, and a storage unit electrically connected with the main station analyzer. The detector is connected to the PROFIBUS-DP communication network and is used for detecting messages and fault voltage values in the PROFIBUS-DP communication network. The storage unit is used for storing fault diagnosis experience information. And the main station analyzer is used for receiving the message and the fault voltage value and determining fault information and/or fault processing information of the PROFIBUS-DP communication network according to the fault diagnosis experience information in the storage unit.
Preferably, the utility model discloses a PROFIBUS-DP communication network's diagnostic equipment still includes the DP connector, and the detector is connected with the website of being surveyed PROFIBUS-DP communication network through the DP connector.
Preferably, the detector comprises a differential bus transceiver and an analog-to-digital converter, the differential bus transceiver and the analog-to-digital converter being electrically connected to the master station analyzer, respectively. And the differential bus transceiver and the analog-to-digital converter are respectively connected with the DP connector. The differential bus transceiver is used for receiving and forwarding messages, and the analog-to-digital converter is used for measuring analog voltage and converting the analog voltage into a fault voltage value.
Preferably, the master station analyzer comprises a first processor and a second processor, the second processor being connected to the first processor by a serial bus. The first processor is electrically connected with the differential bus transceiver and the analog-to-digital converter and used for determining the communication group state of the communication network and/or the physical error of the slave station based on the analysis result of the message and the fault voltage value. And the second processor is used for determining the diagnosis information of the communication network based on the analysis result, comparing the diagnosis information with the fault diagnosis experience information and determining corresponding fault information and fault processing information.
Preferably, the second processor is a central processing unit CPU, a microcontroller MCU or a field programmable gate array FPGA.
Preferably, the master station analyzer further comprises peripheral auxiliary circuitry electrically connected to the first and second processors, respectively, for filtering and/or storage.
Preferably, the diagnostic equipment further comprises a communication interface, and the storage unit is connected with the upper computer through the communication interface. And the upper computer carries out remote monitoring diagnosis on the equipment and/or updates fault diagnosis experience information in the storage unit.
Preferably, the diagnostic device of the PROFIBUS-DP communication network of the present invention further comprises a display device electrically connected to the main station analyzer for displaying the fault information and the fault processing information.
Preferably, the diagnostic device of PROFIBUS-DP communication network of the present invention further comprises a built-in memory electrically connected to the detector for storing the information detected by the detector. The built-in memory is specifically a non-volatile memory.
Preferably, the diagnostic device of PROFIBUS-DP communication network of the present invention further comprises an external storage interface, the external storage interface is electrically connected to the detector, and the storage interface is connected to the external storage.
Use the embodiment of the utility model provides an obtained beneficial effect does:
1. because the application experience library is arranged in the diagnosis equipment in the embodiment, and the application experience library prestores data such as analysis results of various messages or fault voltage values, corresponding relations between fault information and fault processing information and the like, the diagnosis equipment in the embodiment analyzes detected messages and fault voltage values and compares the detected messages and fault voltage values with the data in the application experience library, so that corresponding fault information can be quickly obtained, and a corresponding fault troubleshooting processing method and solution can be provided. On-site maintenance and repair personnel can quickly obtain fault information and measures, DP network communication non-head-end inspection is more targeted, bus faults can be quickly positioned, and fault troubleshooting and solving time is greatly shortened.
2. In the prior art, each maintainer judges faults and selects a troubleshooting processing method and a solution according to respective professional knowledge, experience and the like, and due to the fact that the professional knowledge, experience and the like of each maintainer are different, the judgment is easy to be wrong or the selection is not proper, so that inaccurate fault information is easy to determine, or the improper troubleshooting processing method and solution are easy to select; in contrast, in the present embodiment, more accurate fault information can be provided based on the application experience library, and more appropriate troubleshooting processing methods and solutions can be provided.
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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic frame diagram of the structure of a diagnostic apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the diagnostic device and the network connection to be detected according to the 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 reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The technical solution of the embodiment of the present invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides a diagnostic device for PROFIBUS-DP communication network, including: the system comprises a detector, a main station analyzer electrically connected with the detector, and a storage unit electrically connected with the main station analyzer.
The detector is connected to the PROFIBUS-DP communication network and is used for detecting messages and fault voltage values in the PROFIBUS-DP communication network.
The storage unit is used for storing fault storage diagnosis experience information.
And the main station analyzer receives the message and the fault voltage value and determines fault information and/or fault processing information of the PROFIBUS-DP communication network according to the fault diagnosis experience information in the storage unit.
Specifically, the master station analyzer is configured to analyze the message and the fault voltage value, compare the analysis result with the fault diagnosis experience information in the storage unit, and determine fault information and/or fault processing information of the PROFIBUS-DP communication network.
Because the diagnostic device in this embodiment is provided with the storage unit in which the application experience library is pre-stored, where the application experience library includes data such as analysis results of various messages or fault voltage values, and correspondence between fault information and fault processing information, the diagnostic device in this embodiment analyzes the detected messages and fault voltage values, and compares the analyzed messages and fault voltage values with the data in the application experience library, so as to quickly obtain corresponding fault information and provide a corresponding troubleshooting method and solution. On-site maintenance and repair personnel can quickly obtain fault information and measures, DP network communication non-head-end inspection is more targeted, bus faults can be quickly positioned, and fault troubleshooting and solving time is greatly shortened.
Moreover, because the diagnostic device in this embodiment can obtain the fault information and corresponding solutions in the troubleshooting field, the maintainer does not need to use the existing DP bus snooping device which can provide highly professional message snooping and communication differential voltage measurement, and the requirements of the maintainer on the professional knowledge and skills of the DP bottom layer communication protocol are reduced.
Furthermore, in the prior art, each maintainer judges the fault and selects a troubleshooting processing method and a solution according to the professional knowledge, experience and the like of each maintainer, and due to the fact that the professional knowledge, experience and the like of each maintainer are different, a judgment error or an improper selection is easy to occur, and inaccurate fault information is easy to determine or an improper troubleshooting processing method and solution are easy to select; in contrast, in the present embodiment, more accurate fault information can be provided based on the application experience library, and more appropriate troubleshooting processing methods and solutions can be provided.
In a preferred embodiment, as shown in fig. 2, the diagnostic device of the PROFIBUS-DP communication network of the present invention further comprises a DP connector, and the detector is connected to the station of the measured PROFIBUS-DP communication network through the DP connector. The tested station can be a master station or a slave station.
Specifically, fig. 1 shows an internal configuration diagram of the diagnostic apparatus in the present embodiment, in which the detector includes a differential bus transceiver and an analog-to-digital converter, and the differential bus transceiver and the analog-to-digital converter are electrically connected to the master station analyzer, respectively.
In addition, the differential bus transceiver and the analog-to-digital converter are respectively connected with the DP connector.
The differential bus transceiver is used for receiving and forwarding messages, and the analog-to-digital converter is used for measuring analog voltage and converting the analog voltage into a fault voltage value. The message includes data such as a DP network master station address, a slave station address, a verification code and the like.
Further, in this embodiment, the master station analyzer includes a first processor and a second processor. The second processor is connected with the first processor through a serial bus.
The first processor is electrically connected with the differential bus transceiver and the analog-to-digital converter and used for determining the communication group state of the communication network and/or the physical error of the slave station based on the analysis result of the message and the fault voltage value.
And the second processor is electrically connected with the first processor and used for determining the diagnosis information of the communication network based on the analysis result, comparing the diagnosis information with the fault diagnosis experience information and determining corresponding fault information and fault processing information.
The operation of the diagnostic apparatus of the present embodiment is described in detail below:
after the diagnostic device in this embodiment is connected to the communication network to be detected, the diagnostic device sends a test signal to the master station or the slave station in the network to be detected irregularly, and if problems such as impedance change occur in the network to be detected, part of energy in the network to be detected is reflected to form a reflected wave; while the remaining energy continues to be transmitted. The reflected wave is carried in the analog voltage.
The differential bus transceiver in the detector receives and forwards messages in the communication network, and the analog-to-digital converter measures the analog voltage in real time and converts the analog voltage into a fault voltage value. The differential bus transceiver sends the collected message to the first processor, and the analog-to-digital converter sends the converted fault voltage value to the first processor, for example, to a data buffer in the first processor.
And then, the first processor analyzes the received message and the fault voltage value. Based on the principle, the first processor carries out high-speed conversion on the received fault voltage value, reflected waves generated due to impedance change and other problems in the DP communication network are analyzed from the received fault voltage value, and the first processor judges whether the communication group state of the communication network is correct and/or the physical errors of the slave stations according to the analyzed message and the fault voltage value.
And the first processor then sends the analyzed message and the fault voltage value to the second processor, the second processor draws a topological graph of the communication network according to the analyzed fault voltage value, and determines the diagnosis information of the communication network according to the topological graph and the analyzed message. The second processor compares the diagnosis information with the information stored in the application storage unit, further determines the fault information and the corresponding fault treatment measures corresponding to the diagnosis information, and displays the determined fault information and/or the corresponding fault treatment measures for reference of field overhaul and maintenance personnel. On-site maintenance and repair personnel can carry out targeted maintenance and repair on site more easily through the fault information and the fault treatment measures, and the troubleshooting and solving time is greatly reduced.
More preferably, the second processor is connected to the first processor by a serial bus; the second processor is specifically a CPU (Central Processing Unit), an MCU (Micro Controller Unit), or an FPGA (Field-Programmable Gate Array).
Preferably, a peripheral auxiliary circuit may also be included in the primary station analyzer. The peripheral support circuits are electrically connected to the first processor and the second processor, respectively, for filtering and/or storage. The peripheral auxiliary circuit comprises a plurality of auxiliary functions such as filtering, storage and the like.
In a preferred embodiment, the storage unit is further connected with a communication interface, and the storage unit is connected with the upper computer through the communication interface; the upper computer carries out remote monitoring diagnosis on the diagnosis equipment of the PROFIBUS-DP communication network of the embodiment and/or updates fault diagnosis experience information in the storage unit. The communication interface may include, for example, a wireless network module interface and an RJ45 network interface for connecting to an external network or an upper computer. Through the wireless network module and the RJ45 network interface, the diagnostic device in this embodiment can implement remote monitoring and diagnosis of the device and/or update fault diagnosis experience information in the storage unit module, thereby implementing autonomous learning of the diagnostic device in this embodiment.
Preferably, the diagnostic device in this embodiment may further include a display device, and is electrically connected to the master station analyzer, and is configured to display the fault information and the fault handling information to the detection personnel.
Preferably, the diagnostic apparatus in this embodiment further includes a built-in memory electrically connected to the detector for storing information detected by the detector; further, the built-in memory is embodied as a nonvolatile memory.
Preferably, the diagnostic apparatus in this embodiment further includes an external storage interface, where the external storage interface is electrically connected to the detector, and is used to store information detected by the detector in this embodiment after being connected to an external memory.
Preferably, the condition diagnosing apparatus in this embodiment may further include a battery for supplying power to other devices in the apparatus, so that the condition diagnosing in this embodiment can be operated without an external power supply.
Use the embodiment of the utility model provides an obtained beneficial effect does:
1. because the diagnostic device in this embodiment is provided with the application storage unit in which data such as analysis results of various messages or fault voltage values, and correspondence between fault information and fault processing information are pre-stored, the diagnostic device in this embodiment analyzes the detected messages and fault voltage values and compares the analyzed messages and fault voltage values with the data in the application storage unit, thereby being capable of quickly obtaining corresponding fault information and providing a corresponding troubleshooting method and solution. On-site maintenance and repair personnel can quickly obtain fault information and measures, DP network communication non-head-end inspection is more targeted, bus faults can be quickly positioned, and fault troubleshooting and solving time is greatly shortened.
2. In the prior art, each maintainer judges faults and selects a troubleshooting processing method and a solution according to respective professional knowledge, experience and the like, and due to the fact that the professional knowledge, experience and the like of each maintainer are different, the judgment is easy to be wrong or the selection is not proper, so that inaccurate fault information is easy to determine, or the improper troubleshooting processing method and solution are easy to select; in contrast, in the present embodiment, more accurate failure information can be provided based on the application storage unit, and a more appropriate troubleshooting processing method and solution can be provided.
The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A diagnostic device for a PROFIBUS-DP communications network, comprising: the device comprises a detector, a main station analyzer electrically connected with the detector, and a storage unit electrically connected with the main station analyzer;
the detector is connected to a PROFIBUS-DP communication network and used for detecting messages and fault voltage values in the PROFIBUS-DP communication network;
the storage unit is used for storing fault diagnosis experience information;
and the master station analyzer receives the message and the fault voltage value and determines fault information and/or fault processing information of the PROFIBUS-DP communication network according to the fault diagnosis experience information in the storage unit.
2. The diagnostic device of claim 1, further comprising a DP connector by which the detector is connected to a station of a PROFIBUS-DP communication network under test.
3. The diagnostic apparatus of claim 2,
the detector comprises a differential bus transceiver and an analog-to-digital converter, the differential bus transceiver and the analog-to-digital converter are respectively and electrically connected with the master station analyzer, and the differential bus transceiver and the analog-to-digital converter are respectively connected with the DP connector;
the differential bus transceiver is used for receiving and transmitting the message, and the analog-to-digital converter is used for measuring an analog voltage and converting the analog voltage into the fault voltage value.
4. The diagnostic device of claim 3, wherein the master station analyzer comprises a first processor and a second processor, the second processor coupled to the first processor via a serial bus; wherein,
the first processor is electrically connected with the differential bus transceiver and the analog-to-digital converter and used for determining the communication configuration of the communication network and/or the physical error of the slave station based on the analysis result of the message and the fault voltage value;
and the second processor is used for determining the diagnosis information of the communication network based on the analysis result, comparing the diagnosis information with the fault diagnosis experience information and determining corresponding fault information and fault processing information.
5. Diagnostic device according to claim 4, wherein the second processor is a central processor CPU, a microcontroller MCU or a field programmable gate array FPGA.
6. The diagnostic device of claim 4, wherein the master station analyzer further comprises peripheral auxiliary circuitry,
the peripheral auxiliary circuit is electrically connected with the first processor and the second processor respectively and used for filtering and/or storing.
7. The diagnostic apparatus according to claim 1, further comprising a communication interface, wherein the storage unit is connected to an upper computer through the communication interface;
and the upper computer carries out remote monitoring diagnosis on the equipment and/or updates fault diagnosis experience information in the storage unit.
8. The diagnostic apparatus of claim 1, further comprising:
and the display equipment is electrically connected with the main station analyzer and is used for displaying the fault information and the fault processing information.
9. The diagnostic apparatus of claim 1, further comprising a built-in memory electrically connected to the detector for storing information detected by the detector; the built-in memory is specifically a non-volatile memory.
10. The diagnostic device of claim 1, further comprising an external memory interface, the external memory interface being electrically connected to the detector, the memory interface being connected to an external memory.
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| CN201721893327.1U CN207782829U (en) | 2017-12-28 | 2017-12-28 | The diagnostic device of PROFIBUS-DP communication networks |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927437A (en) * | 2019-11-05 | 2020-03-27 | 石钢京诚装备技术有限公司 | Method for diagnosing and solving profibus-DP network fault |
| CN111124965A (en) * | 2019-12-24 | 2020-05-08 | 三一石油智能装备有限公司 | Distributed bus control method and device and hydraulic fracturing truck |
| CN115174457A (en) * | 2022-06-30 | 2022-10-11 | 东风汽车股份有限公司 | Handheld Profibus bus fault diagnosis device and method |
-
2017
- 2017-12-28 CN CN201721893327.1U patent/CN207782829U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927437A (en) * | 2019-11-05 | 2020-03-27 | 石钢京诚装备技术有限公司 | Method for diagnosing and solving profibus-DP network fault |
| CN110927437B (en) * | 2019-11-05 | 2022-01-28 | 石钢京诚装备技术有限公司 | Method for diagnosing and solving profibus-DP network fault |
| CN111124965A (en) * | 2019-12-24 | 2020-05-08 | 三一石油智能装备有限公司 | Distributed bus control method and device and hydraulic fracturing truck |
| CN111124965B (en) * | 2019-12-24 | 2021-10-29 | 三一石油智能装备有限公司 | Distributed bus control method and device and hydraulic fracturing truck |
| CN115174457A (en) * | 2022-06-30 | 2022-10-11 | 东风汽车股份有限公司 | Handheld Profibus bus fault diagnosis device and method |
| CN115174457B (en) * | 2022-06-30 | 2024-01-19 | 东风汽车股份有限公司 | Handheld Profibus fault diagnosis device and method |
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