Field bus state detection system and method based on DCS

Abstract

The invention provides a field bus state detection system and method based on a DCS. The field bus state detection system comprises a master station state detection module, a slave station input signal module, a quality judgment module, a fault recording module and an upper computer. The master station state detection module is used for detecting the states of a plurality of master station devices of the thermal power plant, and when the detection result of any master station device indicates that the master station device fails, the detection result is sent to the upper computer; the slave station input signal module is used for receiving a digital signal input by slave station equipment; the quality judgment module is used for judging the digital signal and sending the digital signal to the fault recording module when the digital signal fails; the fault recording module is used for recording fault information of the digital signals and sending the fault information to the upper computer; and the upper computer is used for displaying a detection result and a recording result. The whole system is low in implementation cost and high in operability, abnormality of the thermotechnical bus equipment is found timely and effectively, the specific situation of faults is further analyzed, the detection time is shortened, and the reliability of detection results is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of field bus equipment management, and in particular to a field bus state detection system and method based on a DCS. Background Art

[0002] As the foundation of the factory digital communication network, fieldbus connects the field equipment and control system in the production process and promotes communication between various levels. It is not only a grassroots network, but also an open new type of fully distributed control system that can meet the needs of various industries.

[0003] In thermal power plants, the status detection of the fieldbus mainly relies on maintenance personnel to conduct on-site inspections to determine whether there are any equipment faults. However, the thermal equipment in thermal power plants is widely distributed, manual inspections are time-consuming and labor-intensive, and it is difficult to detect abnormal equipment status in a timely manner, affecting problem analysis. Currently, operators manually start tools to diagnose the communication status, but cannot specifically detect the cause of the failure of the bus master or slave, and further investigation is still needed. In addition, the fieldbus fault diagnosis method based on industrial computers can identify the cause of the failure in the PLC control system and send fault information to the computer, but its adaptability is weak and is limited to use in the environment of the PLC control system.

[0004] Therefore, there is an urgent need to solve the problem that field bus status detection takes a long time and the detection results are unreliable. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides a DCS-based field bus status detection system and method to solve the problem that the field bus status detection takes a long time and the detection result is unreliable.

[0006] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0007] The first aspect of the present invention discloses a DCS field bus status detection system, the system comprising: a master station status detection module, a slave station input signal module, a quality judgment module, a fault recording module and a host computer;

[0008] The master station status detection module is used to detect the status of multiple master station devices of the thermal power plant, and when the detection result of any of the master station devices indicates that the master station device is faulty, the detection result is sent to the host computer;

[0009] The slave station input signal module is used to receive digital signals input by multiple slave station devices of the thermal power plant and forward them to the quality judgment module;

[0010] The quality judgment module is used to judge the digital signal, and when the judgment result indicates that the digital signal is faulty, send the digital signal to the fault recording module;

[0011] The fault recording module is used to record the fault information of the digital signal and send the recording result to the host computer;

[0012] The host computer is used to display the detection results and the recording results.

[0013] Preferably, the master station status detection module is used to detect the status of multiple master station devices of the thermal power plant, and when the detection result of any of the master station devices indicates that the master station device is faulty, the detection result is sent to the host computer, specifically for:

[0014] The master station status detection module is used to detect the status of multiple master station devices of the thermal power plant according to preset fault rules to obtain detection results; wherein the fault rules include multiple fault types;

[0015] The master station status detection module is used to send the detection result to the host computer when the detection result indicates that the status of the master station device meets any of the fault types.

[0016] Preferably, the quality judgment module includes: a judgment submodule, a fault sending submodule and an end submodule;

[0017] The judging submodule is used to judge the quality of the digital signal according to the quality requirement;

[0018] The fault sending submodule is used to determine that the quality of the digital signal is bad quality if the quality of the digital signal does not meet the quality requirement, and send the digital signal to the fault recording module;

[0019] The ending submodule is used to end the process if the quality of the digital signal meets the quality requirement.

[0020] Preferably, the fault recording module includes: a fault number recording submodule and a current time locking submodule;

[0021] The failure number recording submodule is used to record the failure number of the slave device corresponding to the digital signal when receiving the digital signal sent by the quality judgment module, and send the failure number to the host computer;

[0022] The current time locking submodule is used to record the current time when receiving the digital signal sent by the quality judgment module, and mark the current time as the fault time to send it to the host computer.

[0023] Preferably, the host computer includes: a master station device display submodule and a slave station device display submodule;

[0024] The master station device display submodule is used to receive the detection result and display the master station device corresponding to the detection result as faulty;

[0025] The slave device display submodule is used to receive the recording result and display the slave device corresponding to the recording result as faulty.

[0026] Preferably, the master station device display submodule is further used to display the corresponding detection result of the master station device when receiving a display instruction triggered by the user for any of the master station devices.

[0027] Preferably, the slave device display submodule is further used to display the corresponding fault number and fault time of the slave device according to the recording result when receiving a display instruction triggered by the user for any of the slave devices.

[0028] Preferably, the master station equipment display submodule is also used to display the card information of all master station equipment in the thermal power plant.

[0029] Preferably, the slave station device display submodule is also used to display address information of all slave station devices in the thermal power plant.

[0030] The second aspect of the present invention discloses a DCS fieldbus status detection method, which is applied to the DCS fieldbus status detection system disclosed in the first aspect of the present invention, comprising:

[0031] The master station status detection module is used to detect the status of multiple master station devices of the thermal power plant. When the detection result of any of the master station devices indicates that the master station device is faulty, the detection result is sent to the host computer for display;

[0032] Using a slave station input signal module to receive digital signals input from a plurality of slave station devices of the thermal power plant;

[0033] The digital signal is judged by a quality judgment module. When the judgment result indicates that the digital signal is faulty, the fault recording module is used to record the fault information of the digital signal, and the recording result is sent to a host computer for display.

[0034] Based on the above-mentioned embodiment of the present invention, a DCS field bus status detection system and method are provided, and the system includes: a master station status detection module, a slave station input signal module, a quality judgment module, a fault recording module and a host computer. The master station status detection module is used to detect the status of multiple master station devices in a thermal power plant. When the detection result of any master station device indicates that the master station device is faulty, the detection result is sent to the host computer; the slave station input signal module is used to receive digital signals input by multiple slave station devices in the thermal power plant; the quality judgment module is used to judge the digital signal, and when the digital signal fails, it is sent to the fault recording module; the fault recording module is used to record the fault information of the digital signal and send it to the host computer; the host computer is used to display the detection results and record the results. The overall system has a low implementation cost and strong operability. It can timely and effectively discover the abnormality of the thermal bus equipment, further analyze the specific situation of the fault, shorten the detection time, and improve the reliability of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0036] Figure 1 A schematic diagram of a DCS field bus status detection system provided by an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of a quality judgment module provided by an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of a fault recording module provided in an embodiment of the present invention;

[0039] Figure 4 A schematic diagram of a module of a host computer provided in an embodiment of the present invention;

[0040] Figure 5 A schematic diagram of a display of a host computer provided by an embodiment of the present invention;

[0041] Figure 6 A flow chart of a DCS field bus status detection method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In this application, the terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0044] As can be seen from the background technology, the status detection of fieldbus mainly relies on on-site inspection by maintenance personnel. However, the thermal equipment in thermal power plants is widely distributed, manual inspection is time-consuming and labor-intensive, and it is difficult to detect abnormal equipment status in time, which affects problem analysis. Therefore, there are problems such as long detection time and unreliable detection results.

[0045] Therefore, the embodiment of the present invention provides a system and method for detecting the state of a DCS field bus, and the system includes: a master station state detection module, a slave station input signal module, a quality judgment module, a fault recording module and a host computer. The master station state detection module is used to detect the state of multiple master station devices of a thermal power plant. When the detection result of any master station device indicates that the master station device is faulty, the detection result is sent to the host computer; the slave station input signal module is used to receive digital signals input by multiple slave station devices of the thermal power plant; the quality judgment module is used to judge the digital signal, and when the digital signal fails, it is sent to the fault recording module; the fault recording module is used to record the fault information of the digital signal and send it to the host computer; the host computer is used to display the detection results and record the results. The overall system has a low implementation cost and strong operability. It can timely and effectively discover the abnormality of the thermal bus equipment, further analyze the specific situation of the fault, shorten the detection time, and improve the reliability of the detection results.

[0046] See also Figure 1 , showing a schematic diagram of a DCS field bus status detection system provided by an embodiment of the present invention, the DCS field bus status detection system includes: a master station status detection module 101, a slave station input signal module 102, a quality judgment module 103, a fault recording module 104 and a host computer 105.

[0047] like Figure 1As shown, one end of the master station status detection module 101 is connected to the bus master station 100 of the field bus, and the other end is connected to the host computer 105; one end of the slave station input signal module 102 is connected to the bus slave station 200 of the field bus, and the other end is connected to one end of the quality judgment module 103; the other end of the quality judgment module 103 is connected to one end of the fault recording module 104; the other end of the fault recording module 104 is connected to the host computer 105.

[0048] It can be understood that the field bus device includes a bus master station 100 and a bus slave station 200 .

[0049] Specifically, the master station status detection module 101 is used to detect the status of multiple master station devices (ie, bus master stations 100 ) of the thermal power plant. When the detection result of any master station device indicates a master station device failure, the detection result is sent to the host computer 105 .

[0050] It should be noted that the specific process of the master station status detection module 101 detecting the status of the master station device is as follows (process A1 and process A2):

[0051] Process A1: The master station status detection module 101 detects the status of multiple master station devices of the thermal power plant according to preset fault rules to obtain detection results.

[0052] It can be understood that a thermal power plant includes multiple master station devices, for example, a master station device with card information FPB01, card information FPB02, and card information FPB03.

[0053] It should be noted that the fault rules include multiple fault types, including but not limited to module loss, BUSA loss, BUSB loss, task 1 failure, task 2 failure and task 3 failure.

[0054] Process A2: When the detection result indicates that the state of the master station device meets any fault type, the master station state detection module 101 sends the detection result to the host computer 105 .

[0055] It should be noted that when the state of any master station device meets any fault type in the fault rule, the master station state detection module 101 sends the detection result to the host computer 105 .

[0056] In some embodiments, the detection result includes information such as the card information and fault type of the master station device.

[0057] It is understandable that the master station status detection module 101 monitors the operating status of the master station equipment in real time, and can detect equipment failures or abnormalities in time to reduce downtime. And when the detection result indicates that the master station equipment fails, it is sent to the host computer 105 through the early warning mechanism, which helps to deal with potential problems in advance and reduce system risks.

[0058] Furthermore, the master station status detection module 101 monitors the operating status of the master station equipment in real time, and based on real-time data analysis, helps to formulate a more reasonable maintenance strategy, reduce maintenance costs, and help improve the stability and security of the overall system.

[0059] Specifically, the slave station input signal module 102 is used to receive digital signals input from multiple slave station devices (ie, bus slave stations 200 ) of the thermal power plant, and forward them to the quality judgment module 103 .

[0060] It is understandable that the slave input signal module 102 can effectively isolate the digital signal input from the slave device from the subsequent processing module, avoiding the influence of noise or current shock on the quality judgment module 103, thereby improving the stability and reliability of the system.

[0061] In some specific embodiments, the slave station input signal module 102 can perform necessary preprocessing on the input digital signal, such as denoising, filtering, etc., to ensure that the digital signal quality meets the requirements; or format or standardize the received digital signal to make it meet the input requirements of subsequent modules, which helps the subsequent quality judgment module 103 to perform more accurate analysis, thereby improving the data consistency and processing efficiency of the entire system.

[0062] It can be further understood that by receiving and forwarding the digital signal input by the slave device through the dedicated slave input signal module 102, the signal transmission process can be simplified, the delay can be reduced, and the real-time response capability of the system can be improved. In general, the role of the slave input signal module 102 is to ensure the quality of the digital signal, improve the system reliability, and optimize the processing efficiency, thereby ensuring the efficiency and accuracy of the entire system in data transmission and processing.

[0063] Specifically, the quality judgment module 103 is used to judge the digital signal, and when the judgment result indicates that the digital signal is faulty, the digital signal is sent to the fault recording module 104 .

[0064] It should be noted that the quality judgment module 103 receives the digital signal forwarded by the slave station input signal module 102, judges the digital signal, obtains a judgment result, and sends the digital signal to the fault recording module when the judgment result indicates that the digital signal is faulty. For details of the quality judgment module 103, see the embodiment of the present invention. Figure 2 The content in.

[0065] Combination Figure 2 As shown in the content, the quality judgment module 103 includes: a judgment submodule 1031, a fault sending submodule 1032 and an end submodule 1033.

[0066] Specifically, the judging submodule 1031 is used to judge the quality of the digital signal according to the quality requirement.

[0067] It is understandable that the quality requirements can be determined based on aspects such as signal accuracy, signal integrity, signal delay, signal strength and signal stability. In other words, the data sent by the slave device must be accurate. Any signal error or data deviation may cause system failure or instability. The digital signal must not be disturbed, lost or deformed during transmission to ensure the integrity of the data. The loss of data packets, transmission errors, etc. will directly affect the signal quality. Real-time systems have high requirements for signal transmission delay, and signal transmission exceeding the predetermined delay threshold will be considered a fault. In some fieldbus systems, insufficient signal strength may lead to communication failure or reduced signal quality. The signal of the slave device should remain stable and should not fluctuate or be lost frequently, especially after long-term operation. Signal stability is a key criterion for judging failure.

[0068] It should be noted that the judging submodule 1031 specifically judges the quality of the digital signal forwarded by the slave input signal module 102 based on a preset quality requirement.

[0069] Specifically, the fault sending submodule 1032 is used to determine that the quality of the digital signal is bad quality if the quality of the digital signal does not meet the quality requirement, and send the digital signal to the fault recording module.

[0070] It is understandable that bad quality means a digital signal failure or anomaly, for example, a liquid level signal is only 0-5 meters, but now 10 meters are received, it is judged to be of bad quality.

[0071] Specifically, the end submodule 1033 is used to end the process if the quality of the digital signal meets the quality requirement.

[0072] It can be understood that if the quality of the digital signal forwarded by the input signal module 102 meets the quality requirement, the process is ended through the end submodule 1033.

[0073] It is understandable that the quality judgment module 103 can monitor the quality of digital signals in real time, help the system to find signals with substandard quality in time, and remind maintenance personnel to make necessary adjustments or switches. In addition, it provides data support for system optimization decisions and helps developers and network administrators to conduct more accurate fault analysis and performance tuning.

[0074] That is to say, the advantages of judging the quality of digital signals through the quality judgment module 103 are mainly reflected in improving system stability, optimizing resource utilization, improving user experience, and enhancing the automation and intelligence level of the system. It can not only effectively guarantee signal quality, but also provide important support for system optimization and troubleshooting.

[0075] Specifically, the fault recording module 104 is used to record the fault information of the digital signal and send the recording result to the host computer 105 .

[0076] It should be noted that the fault recording module 104 records the fault information of the digital signal, including but not limited to the fault time and fault number of the digital signal, and sends the fault time and fault number to the host computer 105 .

[0077] For example: a digital signal DS1 has 2 faults, the first fault occurred at 8:00 on October 11, 2024; the second fault occurred at 9:00 on October 11, 2024.

[0078] It is understandable that the specific content of the fault recording module 104 is detailed in the embodiment of the present invention. Figure 3 The content in.

[0079] Combination Figure 3 As shown in the figure, the fault recording module 104 includes: a fault number recording submodule 1041 and a current time locking submodule 1042 .

[0080] Specifically, the failure count recording submodule 1041 is used to record the failure count of the slave device corresponding to the digital signal when receiving the digital signal sent by the quality judgment module 103 , and send the failure count to the host computer 105 .

[0081] That is to say, when the fault count recording submodule 1041 receives the digital signal sent by the quality judgment module 103, it obtains the information of the slave device corresponding to the current digital signal (such as the address of the slave device), records the fault count of the slave device, and sends the fault count and the information of the slave device to the host computer 105.

[0082] Specifically, the current time locking submodule 1042 is used to record the current time when receiving the digital signal sent by the quality judgment module 103 , and mark the current time as the fault time to send it to the host computer 105 .

[0083] It is understandable that the locking current time submodule 1042 records the current time, marks the current time as the failure time of the slave device corresponding to the failure number, and sends the failure time to the host computer 105 .

[0084] It is understandable that recording the fault time and frequency through the fault recording module 104 can help quickly locate the frequency and time point of the fault, thereby reducing the time for troubleshooting and greatly speeding up the speed of fault diagnosis and repair. On the other hand, recording the fault time and frequency of the digital signal of the slave device is an important indicator for evaluating the reliability and stability of the slave device. If the fault frequency is high, it may indicate that the slave device has design or hardware deficiencies. By analyzing these data, potential defects can be discovered in a timely manner and targeted improvements can be made, thereby improving the reliability and stability of the system.

[0085] In addition, based on the time and frequency of failures, improvement plans can be formulated more specifically, such as replacing hardware equipment, optimizing network architecture, or updating software systems to ensure efficient operation of future systems.

[0086] Specifically, the host computer 105 is used to display the test results and record the results.

[0087] It can be understood that the host computer 105 is specifically used to display the detection results of the master station device and the recording results of the slave station device. The specific content of the host computer 105 is detailed in the embodiment of the present invention. Figure 4 The content in.

[0088] Combination Figure 4 As shown, the host computer 105 includes a master device display submodule 1051 and a slave device display submodule 1052 .

[0089] Specifically, the master device display submodule 1051 is used to receive the detection result and display the master device corresponding to the detection result as faulty. The slave device display submodule 1052 is used to receive the recording result and display the slave device corresponding to the recording result as faulty.

[0090] It should be noted that the master station device display submodule 1051 is used to display the information of the master station device; the slave station device display submodule 1052 is used to display the information of the slave station device.

[0091] It is understandable that, combined with Figure 5 The display diagram of the host computer shown in the figure shows that the master station device display submodule 1051 is also used to display the corresponding detection result of the master station device when receiving a display instruction triggered by the user for any master station device. The master station device display submodule 1051 is also used to display the card information of all master station devices in the thermal power plant.

[0092] For example Figure 5As shown: the master station device display 15 in the DPU01 interface 11 displays the master station device FPB01 (where FPB01 is the card information of the master station device). When the upper computer receives the detection result of the master station device FPB01 fault, the master station device display fault 16 flashes or turns red to prompt the maintenance personnel that the master station device has a fault.

[0093] When the maintenance personnel triggers the display instruction of the master station device FPB01 through the DPU01 interface 11 , for example, when clicking the master station device display 15 , the detection result of the master station device FPB01 is displayed in the DPU01 interface 11 .

[0094] It is understandable that, combined with Figure 5 The display diagram of the host computer shown in the figure, the slave device display submodule 1052 is also used to display the corresponding fault number and fault time of the slave device according to the record result when receiving the display instruction triggered by the user for any slave device. The slave device display submodule 1052 is also used to display the address information of all slave devices in the thermal power plant.

[0095] For example Figure 5 As shown, the slave device display 12 in the DPU01 interface 11 displays the slave device (address is 01). When the upper computer receives the record result of the slave device (address is 01) failure, the slave device failure 13 and the slave device time 14 flash or turn red to prompt the maintenance personnel that the slave device has a failure.

[0096] When the maintenance personnel triggers the display instruction of the slave device through the DPU01 interface 11, for example, when clicking on the slave device fault 13, the DPU01 interface 11 displays the number of faults of the slave device (address is 01); for example, when clicking on the slave device time 14, the DPU01 interface 11 displays the fault time of the slave device (address is 01).

[0097] It should be noted that Figure 5 The line segments with arrows shown in represent communication networks.

[0098] In the embodiment of the present invention, the status of the field bus master station device is checked through the master station status detection module to detect whether the master station device is faulty, and the specific fault cause of the master station device is displayed in the host computer; the digital signal of the slave station device is received through the slave station input signal module, and the quality judgment module is used to judge the quality of the digital signal. When it is determined that the slave station device is faulty, it is recorded and sent to the host computer through the fault recording module. The overall system has low implementation cost and strong operability. It can timely and effectively discover the abnormality of the thermal bus equipment, further analyze the specific situation of the fault, shorten the detection time, and improve the reliability of the detection result. In addition, the system adopts a modular design, so that the system can be easily expanded or modified when necessary, which improves the maintainability of the system.

[0099] Corresponding to the DCS field bus status detection system provided by the above embodiment of the present invention, see Figure 6 , shows a flow chart of a DCS field bus status detection method provided by an embodiment of the present invention, the method comprising:

[0100] Step S601: Use the master station status detection module to detect the status of multiple master station devices of the thermal power plant. When the detection result of any master station device indicates that the master station device is faulty, the detection result is sent to the host computer for display.

[0101] In the specific implementation of step S601, the master station status detection module is used to detect the status of multiple master station devices in the thermal power plant according to the preset fault rules. When the detection result indicates that the status of the master station device meets any fault type, the detection result is sent to the host computer for display.

[0102] Step S602: using a slave station input signal module to receive digital signals input from a plurality of slave station devices of a thermal power plant.

[0103] In some specific embodiments, the slave station input signal module is used to perform necessary preprocessing on the input digital signal, such as denoising, filtering, etc., to ensure that the digital signal quality meets the requirements; or the received digital signal is formatted or standardized to meet the input requirements of subsequent modules, which helps to perform more accurate analysis later.

[0104] Step S603: Use the quality judgment module to judge the digital signal. When the judgment result indicates that the digital signal is faulty, use the fault recording module to record the fault information of the digital signal, and send the recording result to the host computer for display.

[0105] In the specific implementation of step S603, the digital signals input by the multiple slave devices are judged by the quality judgment module. When the judgment result indicates that the digital signal is faulty, the fault recording module is used to record the fault information of the digital signal, and the recording result is sent to the host computer for display. When the judgment result indicates that the digital signal is not faulty, the process ends.

[0106] In the embodiment of the present invention, the master station status detection module is used to check the status of the field bus master station device, detect whether the master station device is faulty, and display the specific fault cause of the master station device in the host computer; the slave station input signal module receives the digital signal of the slave station device, and the quality judgment module is used to judge the quality of the digital signal. When it is determined that the slave station device is faulty, the fault recording module is used to record and send it to the host computer. The overall system has a low implementation cost, strong adaptability and operability, can timely and effectively discover the abnormality of the thermal bus equipment, further analyze the specific situation of the fault, shorten the detection time, and improve the reliability of the detection result.

[0107] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiment. The system and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without creative work.

[0108] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0109] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A DCS fieldbus status detection system, characterized in that: The system comprises: a master station status detection module, a slave station input signal module, a quality judgment module, a fault recording module and a host computer; The master station status detection module is used to detect the status of multiple master station devices of the thermal power plant, and when the detection result of any of the master station devices indicates that the master station device is faulty, the detection result is sent to the host computer; The slave station input signal module is used to receive digital signals input by multiple slave station devices of the thermal power plant and forward them to the quality judgment module; The quality judgment module is used to judge the digital signal, and when the judgment result indicates that the digital signal is faulty, send the digital signal to the fault recording module; The fault recording module is used to record the fault information of the digital signal and send the recording result to the host computer; The host computer is used to display the detection results and the recording results.

2. The system according to claim 1, characterized in that The master station status detection module is used to detect the status of multiple master station devices in a thermal power plant. When the detection result of any of the master station devices indicates that the master station device is faulty, the detection result is sent to the host computer. Specifically, it is used to: The master station status detection module is used to detect the status of multiple master station devices of the thermal power plant according to preset fault rules to obtain detection results; wherein the fault rules include multiple fault types; The master station status detection module is used to send the detection result to the host computer when the detection result indicates that the status of the master station device meets any of the fault types.

3. The system according to claim 1, characterized in that The quality judgment module includes: a judgment submodule, a fault sending submodule and an end submodule; The judging submodule is used to judge the quality of the digital signal according to the quality requirement; The fault sending submodule is used to determine that the quality of the digital signal is bad quality if the quality of the digital signal does not meet the quality requirement, and send the digital signal to the fault recording module; The ending submodule is used to end the process if the quality of the digital signal meets the quality requirement.

4. The system according to claim 1, characterized in that The fault recording module includes: a fault number recording submodule and a current time locking submodule; The failure number recording submodule is used to record the failure number of the slave device corresponding to the digital signal when receiving the digital signal sent by the quality judgment module, and send the failure number to the host computer; The current time locking submodule is used to record the current time when receiving the digital signal sent by the quality judgment module, and mark the current time as the fault time to send it to the host computer.

5. The system according to claim 1, characterized in that The host computer includes: a master station device display submodule and a slave station device display submodule; The master station device display submodule is used to receive the detection result and display the master station device corresponding to the detection result as faulty; The slave device display submodule is used to receive the recording result and display the slave device corresponding to the recording result as faulty.

6. The system according to claim 5, characterized in that The master station device display submodule is further configured to display the corresponding detection result of the master station device when receiving a display instruction triggered by a user for any of the master station devices.

7. The system according to claim 5, characterized in that The slave device display submodule is further configured to display the corresponding fault times and fault times of the slave device according to the recording results when receiving a display instruction triggered by a user for any of the slave devices.

8. The system according to claim 5, characterized in that The master station equipment display submodule is also used to display the card information of all master station equipment in the thermal power plant.

9. The system according to claim 5, characterized in that The slave station device display submodule is also used to display the address information of all slave station devices in the thermal power plant.

10. A method for detecting the state of a DCS field bus, characterized in that: The DCS fieldbus status detection system according to any one of claims 1 to 9 comprises: The master station status detection module is used to detect the status of multiple master station devices of the thermal power plant. When the detection result of any of the master station devices indicates that the master station device is faulty, the detection result is sent to the host computer for display; Using a slave station input signal module to receive digital signals input from a plurality of slave station devices of the thermal power plant; The digital signal is judged by a quality judgment module. When the judgment result indicates that the digital signal is faulty, the fault recording module is used to record the fault information of the digital signal, and the recording result is sent to a host computer for display.

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