Distributed control system

Abstract

The invention relates to a distributed control system. The system comprises a basic module which is used for obtaining corresponding standardized equipment information, carrying out standardized diagnosis on the standardized equipment information, and generating and sending a corresponding standardized control instruction according to a standardized diagnosis result so as to control corresponding standardized equipment to execute actions; the basic module is also used for receiving and analyzing the standardized diagnosis results sent by other basic modules, and generating and sending a corresponding standardized control instruction when the standardized diagnosis results are associated with the standardized diagnosis results so as to solve standardized equipment faults; the comprehensive processing module is used for receiving and analyzing the standardized control instruction from the basic module, generating an adjustment scheme and sending the adjustment scheme to the basic module when the standardized equipment corresponding to the basic module is analyzed to have a fault and the fault is not solved; the basic module is further used for receiving the adjustment scheme of the comprehensive processing module and controlling the standardized equipment to work according to the adjustment scheme. And the problem of fault concentrated overload existing in centralized control is improved.

Description

Technical Field

[0001] The present invention relates to the field of automation control technology, and in particular to a distributed control system. Background Art

[0002] In the process conditions of nuclear power plants, the control field of nuclear power plants uses a distributed control system (DCS) to manage the control logic of the process system. Ensuring the automatic and safe operation of the process is a key control goal, so the reliability of the control system is particularly important for nuclear power plants. However, although many DCS systems are currently decentralized in theory, they still rely on large centralized control devices in design and implementation. Although this centralized structure facilitates unified management and maintenance, it also brings about the need for the layout of a large number of cables, and when a system or device fails, it may lead to the loss of control function, thereby seriously reducing the overall reliability of the system. Therefore, it is necessary to provide a distributed control system. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a distributed control system, which improves the problem of the prior art that control is performed by a centralized control device, and once a single point failure occurs, it is easy to cause the entire system to fail.

[0004] To achieve the above-mentioned purpose and other related purposes, the present invention provides a distributed control system, which includes an integrated processing module and multiple basic modules associated with it, each basic module corresponding to a type of standardized equipment, wherein: the basic module is used to obtain corresponding standardized equipment information, and perform standardized diagnosis on the standardized equipment information, and generate and send corresponding standardized control instructions according to the standardized diagnosis results to control the corresponding standardized equipment to perform actions; wherein, when the standardized diagnosis result is a standardized equipment failure, it is sent to other basic modules; the basic module is also used to receive and parse the standardized diagnosis results sent by other basic modules, and when it is associated with the standardized diagnosis result, it generates and sends corresponding standardized control instructions to solve the standardized equipment failure; the integrated processing module is used to receive and parse the standardized control instructions from the basic module, and when it is parsed that the standardized equipment corresponding to the basic module fails and has not been resolved, an adjustment plan is generated and sent to the corresponding basic module; the basic module is also used to receive the adjustment plan of the integrated processing module, and control the corresponding standardized equipment to work according to the adjustment plan.

[0005] In one embodiment of the present invention, the basic module includes: a standardized equipment docking unit, which is used to receive corresponding standardized equipment information and send standardized control instructions to the corresponding standardized equipment to control the standardized equipment to perform corresponding actions; a basic diagnosis unit, which is used to diagnose the standardized equipment information based on a preset standardized diagnosis algorithm, generate a standardized diagnosis result, and send it to other basic modules when the standardized diagnosis result is a standardized equipment failure; a basic control unit, which is used to generate standardized control instructions based on the standardized equipment information and the standardized diagnosis result; the basic control unit is also used to generate standardized control instructions according to the adjustment plan of the comprehensive processing module; the basic control unit is also used to parse the standardized diagnosis results sent by other basic modules, and generate standardized control instructions when it is parsed that the standardized diagnosis results have a preset mark; a basic communication unit, which is used to send standardized control instructions to the comprehensive processing module, receive the adjustment plan of the comprehensive processing module, receive the standardized diagnosis results of other basic modules, and send the standardized diagnosis results to other basic modules.

[0006] In one embodiment of the present invention, the basic module further includes a basic storage unit for storing standardized diagnosis results and standardized control instructions.

[0007] In one embodiment of the present invention, the comprehensive processing module includes: a comprehensive communication unit, which is used to receive standardized control instructions sent by each basic module, and send an adjustment plan to the corresponding basic module; a comprehensive processing module, which is used to parse the standardized control instructions: if the standardized control instruction and the standardized equipment corresponding to other standardized control instructions associated with the standardized control instruction both fail, then the other basic modules to be started are determined based on the preset adjustment rules, and an adjustment plan is generated; if the standardized equipment corresponding to the standardized control instruction fails, and the standardized equipment corresponding to other standardized control instructions associated with the standardized control instruction operate normally, then the status of the standardized equipment corresponding to each standardized control instruction is recorded.

[0008] In one embodiment of the present invention, the comprehensive processing module also corresponds to non-standardized equipment, and the comprehensive processing module also includes a non-standardized equipment docking unit and a comprehensive diagnosis unit, wherein: the non-standardized equipment docking unit is used to obtain the corresponding non-standardized equipment information and send non-standardized control instructions to the corresponding non-standardized equipment; the comprehensive diagnosis unit is used to diagnose the non-standardized equipment information based on a preset non-standardized diagnosis algorithm and generate a non-standardized diagnosis result; the comprehensive control unit is also used to generate non-standardized control instructions based on the non-standardized equipment information and the non-standardized diagnosis result.

[0009] In one embodiment of the present invention, the comprehensive processing module further includes a comprehensive storage unit for storing non-standardized diagnosis results and non-standardized control instructions.

[0010] In one embodiment of the present invention, the distributed control system also includes an operation monitoring module corresponding to the basic module one by one, which is used to send a first local control instruction to the corresponding basic module so that the basic module controls the corresponding standardized equipment locally according to the first local control instruction.

[0011] In one embodiment of the present invention, the distributed control system also includes a centralized monitoring and storage module, which is used to send a second local control instruction to the corresponding basic module and / or the comprehensive processing module, and record the operating status information of each basic module and the comprehensive processing module; wherein the centralized monitoring and storage module is associated with all basic modules and the comprehensive processing module.

[0012] In one embodiment of the present invention, the centralized monitoring and storage module includes: a centralized communication unit, which is used to receive the operating status information sent by each basic module and / or the integrated processing module, and send the second local control instruction to the corresponding basic module and / or the integrated processing module; an external diagnosis unit, which is used to transmit the operating status information to an external device to generate an external diagnosis result; an operation monitoring unit, which is used to generate a second local control instruction based on the external diagnosis result and the operating status information; wherein the second local control instruction is used to adjust the operating status of the basic module and / or the integrated processing module; a centralized storage unit, which is used to hierarchically store the operating status information based on a preset storage principle.

[0013] In one embodiment of the present invention, the standardized diagnosis result is a standardized diagnosis prediction result or a standardized diagnosis real-time result.

[0014] As described above, a distributed control system of the present invention has the following beneficial effects: a control architecture of distributed control and distributed diagnosis is proposed, which adopts a layered architecture of basic modules and comprehensive processing modules, wherein the basic modules execute standardized control logic, and the comprehensive processing modules can achieve flexible adaptation to different control requirements. Fault diagnosis is executed in each basic module in a distributed manner, and the control logic of the basic module or the comprehensive processing module is triggered according to a preset program, thereby achieving rapid response. The present invention aims to solve the problem of concentrated overload of faults in centralized control, and reduces the cost burden of cables and the like through a distributed layout. In addition, through a distributed fault diagnosis layout, the system can quickly locate and handle faults, meeting the control requirements of batching, low cost and differentiation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural block diagram of a distributed control system provided by an embodiment of the present invention;

[0016] Figure 2 A block diagram showing a logic response to a device failure in a distributed control system provided by an embodiment of the present invention;

[0017] Figure 3 A block diagram showing a logic response to a basic module failure of a distributed control system provided by an embodiment of the present invention;

[0018] Figure 4 Shown is a schematic diagram of a distributed control system example provided by an embodiment of the present invention.

[0019] Component number description:

[0020] 100. Basic module; 110. Standardized equipment docking unit; 120. Basic diagnostic unit; 130. Basic control unit; 140. Basic communication unit; 150. Basic storage unit; 200. Comprehensive processing module; 210. Non-standardized equipment docking unit; 220. Comprehensive diagnostic unit; 230. Comprehensive control unit; 240. Comprehensive communication unit; 250. Comprehensive storage unit; 300. Operation monitoring module; 400. Centralized monitoring storage module; 500. Monitoring network; 600. Communication module. DETAILED DESCRIPTION

[0021] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0022] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0023] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0024] The present invention provides a distributed control system, which combines a control architecture of distributed control, distributed diagnosis and distributed storage, and monitors in a manner that combines distributed monitoring with centralized monitoring. The system adopts a layered architecture of basic modules and integrated processing modules, wherein the basic modules execute standardized control logic, and the integrated processing modules are configured according to the differentiated requirements of non-standardized equipment, thereby achieving flexible adaptation to different control requirements. Fault diagnosis is decentralized in each basic module, and the control logic of the basic module or the integrated processing module is triggered according to a preset program, thereby achieving rapid response. The present invention aims to solve the problem of concentrated overload of faults in centralized control, reduces the cost burden of cables and the like through a decentralized layout, and provides an on-site operation panel through an operation monitoring module to cope with the operation requirements of the basic module when centralized monitoring fails. In addition, through a decentralized fault diagnosis layout, the system can quickly locate and handle faults, meeting the control requirements of batching, low cost and differentiation.

[0025] See also Figure 1 , the distributed control system includes a comprehensive processing module 200 and a plurality of basic modules 100 associated therewith, each basic module 100 corresponds to a type of standardized equipment, wherein: the basic module 100 is used to obtain the corresponding standardized equipment information, and perform standardized diagnosis on the standardized equipment information, and generate and send the corresponding standardized control instructions according to the standardized diagnosis results to control the corresponding standardized equipment to perform actions; wherein, when the standardized diagnosis result is a standardized equipment failure, it is sent to other basic modules 100. The basic module 100 is a basic control unit for performing local control, monitoring the standardized equipment corresponding to it, and collecting the operating data of the standardized equipment, such as temperature, pressure, vibration and other information. Through the preset standardized diagnosis algorithm, the basic module 100 analyzes the collected equipment information to determine whether the equipment is in normal working state. If the equipment is operating normally, the basic module 100 generates a control instruction according to the diagnosis result and sends it to the equipment to maintain its normal operation; if the diagnosis result shows that the equipment is faulty, the basic module 100 will transmit the fault information to other basic modules 100. These other basic modules 100 can parse the received fault information, and when the fault information is parsed and associated with itself, generate and execute corresponding control instructions to adjust the operating status of the corresponding equipment or enable the corresponding backup equipment to ensure the stability and continuity of the system and avoid the impact of single point failure on the overall system. In a distributed control system, 1 to n basic modules 100 can be configured based on actual needs.

[0026] Further, the basic module 100 is also used to receive and parse the standardized diagnostic results sent by other basic modules 100, and when there is an association with the standardized diagnostic results, generate and send corresponding standardized control instructions to solve standardized equipment failures. The basic module 100 also receives and parses standardized diagnostic results sent from other basic modules 100. When the received diagnostic results are associated with the standardized equipment controlled by itself, the basic module 100 generates corresponding control instructions based on these diagnostic results. These control instructions are used to solve related equipment failures, such as starting backup equipment, adjusting equipment parameters, or performing other necessary control operations to restore the normal operation of the equipment and ensure the stability of the system.

[0027] The comprehensive processing module 200 is used to receive and parse the standardized control instructions from the basic module 100, and when it is parsed that the standardized equipment corresponding to the basic module 100 fails and has not been resolved, an adjustment plan is generated and sent to the corresponding basic module 100. The comprehensive processing module 200 is a control unit for comprehensive processing information and control, responsible for receiving and parsing the standardized control instructions from the basic module 100, so as to realize the coordinated management and operation scheduling of each basic module 100, and to control non-standardized equipment through customized logic. If it is found during the parsing process that a standardized equipment controlled by a basic module 100 fails and the failure has not been resolved, the comprehensive processing module 200 will generate an adjustment plan based on the preset adjustment logic. The adjustment plan includes enabling spare equipment that can perform functional substitution, adjusting control parameters or taking other necessary remedial measures. The generated adjustment plan will be sent to the corresponding basic module 100 to guide it to take appropriate actions to repair the fault or alleviate the impact of the fault, so as to ensure the normal operation and stability of the system. It is understandable that in a distributed control system, 1 to m integrated processing modules 200 can be adaptively set based on actual needs, and m integrated processing modules 200 can coordinate and control 0 to n basic modules 100 according to different grouping configuration requirements.

[0028] The basic module 100 is also used to receive the adjustment plan of the comprehensive processing module 200, and control the corresponding standardized equipment to work according to the adjustment plan. The basic module 100 is also responsible for receiving the adjustment plan from the comprehensive processing module 200, and controlling the work of the corresponding standardized equipment according to the adjustment plan. When the comprehensive processing module 200 detects a device failure and generates an adjustment plan, the basic module 100 will perform corresponding control operations according to the received adjustment instructions, such as enabling backup equipment, adjusting equipment operating parameters, etc., so that the system can maintain normal operation. In this way, the basic module 100 can respond to and solve equipment failures in a timely manner according to the plan provided by the comprehensive processing module 200, ensuring that the system can operate smoothly and stably.

[0029] In one embodiment of the present invention, the basic module 100 includes: a standardized device docking unit 110, which is used to receive corresponding standardized device information and send standardized control instructions to the corresponding standardized device to control the standardized device to perform corresponding actions; a basic diagnosis unit 120, which is used to diagnose the standardized device information based on a preset standardized diagnosis algorithm, generate a standardized diagnosis result, and send it to other basic modules 100 when the standardized diagnosis result is a standardized device failure; a basic control unit 130, which is used to generate standardized control instructions based on the standardized device information and the standardized diagnosis result; the basic control unit 130 is also used to generate standardized control instructions based on the adjustment plan of the comprehensive processing module 200; a basic communication unit 140, which is used to send standardized control instructions to the comprehensive processing module 200, receive the adjustment plan sent by the comprehensive processing module 200, receive the standardized diagnosis results sent by other basic modules 100, and send the standardized diagnosis results to other basic modules 100. As a direct interoperator with the standardized equipment, the standardized equipment docking unit 110 receives relevant information from the standardized equipment, such as sensor parameters and related instrument information, and sends the standardized equipment information to the basic diagnostic unit 120 and the basic control unit 130 that are connected to the standardized equipment for communication, and sends standardized control instructions to the standardized equipment, so that the standardized equipment performs actions such as running or stopping. The basic diagnostic unit 120 performs diagnostic processing on the on-site standardized equipment information sent by the standardized equipment docking unit 110 based on a preset standardized diagnostic algorithm, determines whether the equipment has a fault, and generates a diagnostic result. If the diagnostic result indicates that the equipment is faulty, the basic diagnostic unit 120 will send this fault information to other basic modules 100 through the basic communication unit 140.

[0030] Furthermore, the basic diagnosis unit 120 will also send the diagnosis result to the basic control unit 130 connected to it in communication, so that the basic control unit 130 can perform regulation. The basic control unit 130 plays the role of executing the preset standardized control logic signal processing in the basic module 100. In the basic control unit 130, the standardized logic control of the equipment and equipment group or a small amount of customized logic can be executed to realize the control of the standardized equipment. Specifically, it generates a standardized control instruction according to the preset control logic based on the received diagnosis result and standardized equipment information, and sends the instruction to the standardized equipment docking unit 110 to control the corresponding standardized equipment to perform the corresponding operation. Among them, the operations that the standardized equipment can perform include but are not limited to starting, stopping, adjusting parameters, switching working modes, etc. Therefore, the basic module 100 is mainly used for the control and monitoring of standardized equipment or instrument combinations, such as: complete sets of water cooling units, air cooling units, ventilation and filtering columns, etc., which can independently complete control and monitoring. The basic module 100 is equipped with a basic diagnosis unit 120, which can realize on-site diagnosis of standardized equipment and directly link the basic control unit 130 to realize the control of standardized equipment.

[0031] Furthermore, the basic control unit 130 will also generate standardized control instructions according to the adjustment scheme of the comprehensive processing module 200. Specifically, the basic control unit 130 parses the received adjustment scheme and identifies the operation requirements therein, such as requiring the device to be started, adjusting the operating parameters of the device, etc. According to these operation requirements and the received standardized device information, the basic control unit 130 will generate corresponding standardized control instructions and send them to the standardized device docking unit 110, so that the device can work under the instructions of the comprehensive processing module 200. In addition, the basic control unit 130 will also parse the standardized diagnosis results sent by other basic modules 100 and generate standardized control instructions. Specifically, the basic control unit 130 parses the standardized diagnosis results sent by other basic modules 100, and determines whether there is a preset identifier in the diagnosis result. If there is, it means that the diagnosis result is associated with itself, and can generate standardized control instructions according to the specific content of the diagnosis result to control the corresponding device to start, etc. In this way, even if a certain device fails, other basic modules associated with the device can also start the corresponding standby device after receiving the fault information to ensure the normal operation of the system. The basic communication unit 140 is responsible for the information interaction between the current basic module 100 and other modules. Specifically, after the basic control unit 130 sends the generated standardized control instruction to the basic communication unit 140 of the module, the basic communication unit 140 sends the standardized control instruction to the comprehensive processing module 200. The basic communication unit 140 also receives the adjustment plan sent by the comprehensive processing module 200, and sends the adjustment plan to the basic control unit 130 so that it generates a standardized control instruction. The basic communication unit 140 also receives the standardized diagnosis results from other basic modules 100, and sends the standardized diagnosis results generated by this basic module 100 to other basic modules 100, so as to coordinate and make decisions between the modules. For each basic module 100, there can be one basic communication unit 140, or it can be divided into two basic communication units 140, one basic communication unit 140 is connected to the operation monitoring module 300 in communication, so as to realize the information exchange between the basic module 100 and the operation monitoring module 300. The other basic communication unit 140 is connected to the monitoring network 500 in communication, so as to realize the information exchange with other modules.

[0032] In one embodiment of the present invention, the basic module 100 also includes a basic storage unit 150 for storing standardized diagnostic results and standardized control instructions. The basic storage unit 150 receives and saves the standardized diagnostic results from the basic diagnostic unit 120 for subsequent use in troubleshooting and other situations. In addition, the basic storage unit 150 also stores the standardized control instructions generated by the basic control unit 130 for subsequent inquiries. As an example, the basic control unit 130 can read the historical information stored in the basic storage unit 150 on the one hand, and generate standardized control instructions by analyzing the historical information and the currently acquired standardized equipment information. On the other hand, after the basic control unit 130 generates the standardized control instructions, it will store the relevant information involved in the basic storage unit 150 for subsequent calls.

[0033] In one embodiment of the present invention, the comprehensive processing module 200 includes: a comprehensive communication unit 240, which is used to receive the standardized control instructions sent by each basic module 100, and send the adjustment plan to the corresponding basic module 100; the comprehensive processing module 200 is used to parse the standardized control instruction: if the standardized control instruction and the standardized equipment corresponding to other standardized control instructions associated with the standardized control instruction are both faulty, then the other basic modules 100 to be started are determined based on the preset adjustment rules, and the adjustment plan is generated; if the standardized equipment corresponding to the standardized control instruction is faulty, and the standardized equipment corresponding to other standardized control instructions associated with the standardized control instruction is running normally, then the state of the standardized equipment corresponding to each standardized control instruction is recorded. The comprehensive communication unit 240 is connected to the monitoring network 500 for communication, so as to realize information interaction with other modules connected to the monitoring network 500. Specifically, the comprehensive communication unit 240 receives the standardized control instructions from each basic module 100, and sends the adjustment plan generated by the comprehensive control unit 230 to the corresponding basic module 100 involved in the plan, so that the basic module 100 performs the corresponding adjustment operation, such as starting the backup equipment with similar functions, etc., to ensure the normal operation of the entire distributed control system. The comprehensive processing module 200 performs control logic and signal processing functions, and mainly performs coordinated control between devices and device groups, comprehensive control of device groups, and comprehensive monitoring of devices. After receiving the standardized control instructions sent by each basic module 100, the comprehensive processing module 200 parses and processes the received instructions to determine the devices and their status involved in the control instructions: if the devices corresponding to the current standardized control instructions and other standardized control instructions associated with them are all faulty, in order to ensure the normal operation of the system, the comprehensive processing module 200 will determine which basic modules 100 need to be started according to the preset adjustment rules so that these basic modules 100 control the operation of the corresponding devices. On the contrary, if the device corresponding to the standardized control instruction fails, but the devices corresponding to other control instructions associated with the instruction are still in a normal operating state, the comprehensive control unit 230 will save the status of the devices corresponding to each standardized instruction to the comprehensive storage unit 250 for subsequent fault analysis and other work to query and call. Further, the comprehensive control unit 230 can also read the information in the comprehensive storage unit 250 to generate relevant instructions. In this way, the comprehensive processing module 200 can achieve comprehensive coordination and control of each basic module 100.

[0034] In one embodiment of the present invention, the comprehensive processing module 200 also corresponds to non-standardized equipment, and the comprehensive processing module 200 also includes a non-standardized equipment docking unit 210 and a comprehensive diagnosis unit 220, wherein: the non-standardized equipment docking unit 210 is used to obtain the corresponding non-standardized equipment information and send non-standardized control instructions to the corresponding non-standardized equipment; the comprehensive diagnosis unit 220 is used to diagnose the non-standardized equipment information based on a preset non-standardized diagnosis algorithm and generate a non-standardized diagnosis result; the comprehensive control unit 230 is also used to generate non-standardized control instructions according to the non-standardized equipment information and the non-standardized diagnosis result. The comprehensive processing module 200 can not only realize the comprehensive management of each basic module 100, but also realize the processing and control of non-standardized equipment. Specifically, the non-standardized equipment docking unit 210, as a direct docking party with non-standardized equipment, can obtain field information such as sensor data or instrument data related to non-standardized equipment, and send the acquired non-standardized equipment information to the comprehensive processing module 200 for processing. In addition, the non-standardized device docking unit 210 will also send the non-standardized control instructions generated by the comprehensive control unit 230 to the corresponding non-standardized device so that the device performs the corresponding operation. It can be understood that, unlike standardized devices, the non-standardized device docking unit 210 needs to process different types of data formats and control protocols. The comprehensive diagnosis unit 220 analyzes the field information from the non-standardized device and performs diagnosis based on the preset non-standardized diagnosis algorithm, generates corresponding diagnosis results and sends the diagnosis results to the comprehensive control unit 230. The comprehensive control unit 230 combines the real-time information and diagnosis results of the device to determine whether the non-standardized device is in a normal working state, and generates non-standardized control instructions according to preset rules, and sends them to the corresponding non-standardized device through the standardized device docking unit 110, so that the device continues to run, shuts down or changes a certain parameter, etc. It should be noted that the comprehensive processing module 200 can be configured with redundant non-standardized control devices to improve the overall system reliability. Among them, the redundant configuration can be a backup of the entire comprehensive processing module 200, or it can be the redundancy of each internal unit, such as the comprehensive control unit 230, the comprehensive diagnosis unit 220, the comprehensive communication unit 240, etc., all of which can be set as a main and standby processing unit. Therefore, the integrated processing module 200 is mainly used for grouping, sequential control, integrated coordination, system or equipment group monitoring and control at the system or functional level. The integrated processing module 200 can realize on-site equipment diagnosis and directly link the integrated control unit 230 to realize control through the integrated diagnostic unit 220. It should be noted that the equipment of the distributed control system is dispersedly arranged, and when a single basic module 100 fails or the corresponding equipment fails, the other basic modules 100 can perform the backup function.The comprehensive processing module 200 and the basic module 100 are under the same level of control. The loss of a single basic module 100, or even the failure of the comprehensive processing module 200, will not significantly affect the operation of other modules, thereby improving the overall reliability of the system. Furthermore, in one embodiment of the present invention, the standardized diagnostic result is a standardized diagnostic prediction result or a standardized diagnostic real-time result, and the non-standardized diagnostic result is a non-standardized diagnostic prediction result or a non-standardized diagnostic real-time result. In the present invention, the standardized diagnostic algorithm or the non-standardized diagnostic algorithm can not only obtain a real-time diagnostic result based only on the currently acquired equipment field data, but also combine historical data to predict possible faults that may occur within a certain period of time in the future, so that the operator can perform relevant preventive and protective work. In this way, the overall stability of the system is greatly improved, and flexible and efficient fault management is achieved.

[0035] In order to directly control the standardized equipment on site, in one embodiment of the present invention, the distributed control system further includes an operation monitoring module 300 corresponding to the basic module 100, which is used to send a first local control instruction to the corresponding basic module 100, so that the basic module 100 controls the corresponding standardized equipment on site according to the first local control instruction. The operation monitoring module 300 corresponds to the basic module 100 on a one-to-one basis, and is a part that realizes local operation and monitors the operating status. The operation monitoring module 300 controls and monitors the relevant standardized equipment through the corresponding basic module 100. The operation monitoring module 300 can access the equipment status, diagnostic data and results, and read the stored historical and process data, etc. Specifically, the operation monitoring module 300 is used to receive the first local control instruction from the operator and send it to the corresponding basic module 100. The basic control unit 130 of the basic module 100 receives the first local control instruction from the operation monitoring module 300, parses it, and controls the standardized equipment on site according to the parsing result.

[0036] In one embodiment of the present invention, the distributed control system further includes a centralized monitoring storage module 400, which is used to send a second local control instruction to the corresponding basic module 100 and / or the comprehensive processing module 200, and record the operation status information of each basic module 100 and the comprehensive processing module 200; wherein the centralized monitoring storage module 400 is associated with all basic modules 100 and the comprehensive processing module 200. The centralized monitoring storage module 400 is connected to the comprehensive processing module 200 and each basic module 100 through the monitoring network 500, and can realize local centralized monitoring of the distributed control system and equipment status, and realize hierarchical storage of data information with each basic storage unit 150 and the comprehensive storage unit 250.

[0037] In one embodiment of the present invention, the centralized monitoring storage module 400 includes: a centralized communication unit 440, which is used to receive the operation status information sent by each basic module 100 and / or the integrated processing module 200, and send the second local control instruction to the corresponding basic module 100 and / or the integrated processing module 200; an external diagnosis unit 420, which is used to transmit the operation status information to an external device to generate an external diagnosis result; an operation monitoring unit 410, which is used to generate a second local control instruction according to the external diagnosis result and the operation status information; wherein the second local control instruction is used to adjust the operation status of the basic module 100 and / or the integrated processing module 200; and a centralized storage unit 430, which is used to hierarchically store the operation status information based on a preset storage principle. The centralized communication unit 440 is connected to each basic module 100 and the integrated processing module 200 in communication, and the operation status information sent by these modules is transmitted to the centralized communication unit through the monitoring network 500. By obtaining this information, the centralized monitoring storage module 400 can fully and accurately control the current operation of the system. In addition, the centralized communication unit also sends the second local control instruction to the basic module 100 and / or the integrated processing module 200 corresponding to the instruction, so that the local control of the corresponding module can be realized. The external diagnostic unit 420 can be connected to an external diagnostic device to realize external device access. Specifically, the external diagnostic unit 420 transmits the operating status of each device to an external diagnostic device through an external interface, so that the external diagnostic device generates an external diagnostic result based on this information. By introducing external diagnosis, the accuracy of fault detection and the reliability of system operation can be effectively improved. The operation monitoring unit is an interface for human-computer interaction, which can realize the functions of issuing the second local control instruction, monitoring the system process parameters and diagnostic parameters, etc. Specifically, the operator generates the second local control instruction according to the external diagnostic result and the operating status information. The second local control instruction is sent to the corresponding basic module 100 and / or the integrated processing module 200 through the centralized communication unit 440 and the monitoring network 500 to regulate its operating status. The centralized storage unit 430 can record the data of the system, and cooperate with the storage of other modules to realize hierarchical storage management of data, and can also avoid the burden of centralized data storage and increase the data transmitted by the monitoring network 500 system. Exemplarily, for the data that is called more by the basic module 100 or the comprehensive processing module 200, it is stored in the corresponding basic storage unit 150 or the comprehensive storage unit 250, and for the data that is called more by the centralized on-site control, it is stored in the centralized storage unit 430. Furthermore, the distributed control system can also interact with other external control systems through the communication module 600, so as to realize more extensive monitoring and collaborative operation.

[0038] In summary, the basic module 100 is mainly used for standardized equipment or instrument combination control and monitoring, equipment diagnosis, etc., and the operation monitoring module 300 connected can be used for advance operation and local decentralized control of equipment or equipment groups, and realize equipment diagnosis in combination with diagnostic algorithms. In combination with the type of diagnostic equipment, the system operation abnormality is judged based on process parameter monitoring, and equipment diagnosis is realized based on the monitoring parameters of the equipment in combination with intelligent algorithms, such as: equipment vibration, core component temperature, rotating component speed, etc., in combination with expert systems or neural network intelligent models, etc. to complete equipment diagnosis, and generate equipment fault judgment and preventive prompts, alarm in advance and switch to normal equipment, so that the equipment can be shut down and switched to spare equipment in advance during the preventive maintenance stage, reducing losses while ensuring system operation. Due to the use of decentralized control technology, it has the possibility of shutting down and repairing a single module. The comprehensive processing module 200 is mainly used for grouping, sequential control, comprehensive coordination, system or equipment group monitoring, control, diagnosis, etc. at the system or functional level. This part of the module is mainly based on the collaborative control algorithm of the sub-function level, the system or the system outside the collaborative basic module 100. At present, the algorithm mainly adopts the grouping, sequential control, and comprehensive coordination algorithm. It can also adopt the expert system algorithm (for example: rule-based reasoning, forward reasoning, reverse reasoning, hybrid reasoning, simulation logic and other expert mechanism construction system) or adaptive control, predictive control, fuzzy control, neural network control, genetic algorithm and other control algorithms. The diagnostic algorithm in the comprehensive processing module 200 can realize the diagnosis of the equipment based on the collected data on site, and can also combine the data and signals transmitted in the control system to comprehensively analyze the operating status of the system and make a system-level diagnostic result that is different from the equipment-level diagnosis of the basic module 100.

[0039] See also Figure 2, which shows the processing process when an instrument or actuator fails. As a specific example, if a basic module 100 corresponds to an instrument or device that fails, the signal is collected by the standardized device docking unit 110, and the basic diagnosis unit 120 generates an "equipment failure signal" through algorithm analysis. Then, it is sent to the basic control unit 130 in the basic module 100 to trigger the equipment shutdown command. The "equipment failure signal" will be sent to other basic modules 100 and the comprehensive processing module 200 simultaneously. After receiving the control command, other basic control units 130 will combine the pre-set program control: if the device controlled by other basic modules 100 is a backup device of the faulty basic module 100, the other basic module 100 will start the backup device, and the comprehensive processing module 200 will record the status of the currently started device; if there is no other backup control device, the comprehensive processing module 200 module recognizes the device status, and then acts on other devices according to the preset program to ensure the safety of the system and equipment. The centralized monitoring storage module 400 can collect diagnostic data of each module as needed to realize comprehensive management and monitoring functions. At the same time, the external diagnostic unit 420 reserves a diagnostic interface, which can be connected to other external terminals to realize external system diagnosis through the algorithm of the external terminal.

[0040] See also Figure 3 If a basic module 100 fails, the distributed control system will diagnose the equipment failure of this basic module 100 (for example: controller failure, network failure, input / output module failure, etc.) or monitor the control failure of executing this function through the on-site process parameters of other basic modules 100 and the comprehensive processing module 200. According to the signal of fault monitoring, it will be combined with the pre-set program control: if the equipment controlled by other basic modules 100 is the backup equipment of the faulty basic module 100, then the other basic module 100 starts the backup equipment, and the comprehensive processing module 200 records the status of the currently started equipment; if there is no other backup control equipment, the comprehensive processing module 200 recognizes the equipment status, and then acts on other equipment according to the preset program to ensure the safety of the system and equipment. The centralized monitoring storage module 400 can collect the diagnostic data of each module as needed to realize the comprehensive management and monitoring function. At the same time, the diagnostic interface can be reserved through the external diagnostic unit 420, which can be connected to other external terminals, and the system external diagnosis can be realized through the algorithm of the external terminal.

[0041] Furthermore, if a certain integrated processing module 200 fails, the integrated coordination, grouping, sequential control, system or equipment group monitoring will be lost. At this time, the original instructions of the integrated processing module 200 disappear, and the basic module 100 is mainly controlled in combination with the pre-set program. The basic module 100 maintains the state before the failure, or can start and stop the corresponding equipment or equipment group in combination with the failure mode reached by the instruction state of the integrated processing module 200.

[0042] It is understandable that the basic module 100 and the integrated processing module 200 can adopt products of PLC, FPGA, DCS and other technologies. The execution form of each module is configured based on different technical product conditions. For example, the controller card, input and output card, communication module, etc. can be arranged in a cage structure; the execution basic modules 100 can also be arranged in a PCB integrated circuit manner.

[0043] The integrated control unit 230, the basic control unit 130, the integrated diagnostic unit 230, and the basic diagnostic unit 130 can perform functions using the same controller or technology, such as PLC or FPGA; the processor can adopt a non-redundant or multi-redundant configuration according to different reliability requirements. At the same time, in order to improve the control and diagnostic capabilities, the integrated control unit 230, the basic control unit 130, the integrated diagnostic unit 230, and the basic diagnostic unit 130 can also be implemented using different processing units and different control technologies, such as PLC technology for the integrated control unit 230 and the basic control unit 130, and FPGA technology for the integrated diagnostic unit 230 and the basic diagnostic unit 130; giving full play to the PLC logic processing efficiency and the FPGA's fast data processing capabilities.

[0044] The integrated storage unit 250 and the basic storage unit 150 select different technical products according to different storage capacities, access speeds, etc., for example: a hard disk drive (HDD), random access memory (RAM), read-only memory (ROM), a solid-state drive (SSD), etc.

[0045] The integrated communication unit 240240, the basic communication unit 140, and the communication module 600 can be configured according to different network communication requirements. The network interface adopts RS485 interface, RS232 interface, Ethernet interface (for example: EtherNet, Profinet, etc.), and other communication modules (GPRS module, 5G module, ZigBee module, CAN module, LoRa module, etc.). The network structure of the monitoring network can be a ring structure, a star structure, etc.; the communication medium can be optical fiber, twisted pair, coaxial cable, wireless, etc.

[0046] The operation monitoring module 300 and the operation monitoring unit 410 may use devices with display, storage and communication, such as a touch screen display, physical buttons and indication display devices.

[0047] It should be noted that the present invention Figures 1 to 3In the embodiment, only two basic modules 100, one comprehensive processing module 200, two operation monitoring modules 300, one centralized monitoring storage module 400, one monitoring network 500 and one communication module 600 are exemplarily provided. However, those skilled in the art may configure different numbers of the above modules according to different configuration requirements to execute different control logics. Figure 4 Some examples of division are listed. The specific division can be divided into different modules based on the different needs of different systems.

[0048] It should be noted that, in order to highlight the innovative part of the present invention, the present embodiment does not introduce modules that are not closely related to solving the technical problem proposed by the present invention, but this does not mean that there are no other modules in the present embodiment.

[0049] In summary, the distributed control system disclosed in the present invention can realize independent diagnostic control capabilities through distributed control and distributed diagnosis. Even if the network fails, the equipment can act as expected after diagnosis. The results of the distributed diagnosis can be transmitted to the network, and monitored or remotely managed through a unified interface, so that personnel can remotely and centrally identify the status of the equipment. Among them, the basic module in the system realizes the control of the equipment group. Two or more basic modules can realize 2*100% or n*100% control. The increase of redundant equipment can realize rapid configuration; when a basic module fails, it can also directly call and start the backup equipment or auxiliary equipment through other basic modules through the network, without the need for regulation through the comprehensive processing module. In addition to realizing the status recording and deployment management between basic modules, the comprehensive processing module can also realize differentiated control requirements and configure algorithms and equipment modules according to different system configuration requirements. Furthermore, for each basic module, it is controlled by its own operation monitoring module to improve the manual operation capability and reliability of the system. Data can be stored in different devices. The built-in memory of the basic module and the comprehensive processing module includes its own diagnostic information and control parameter information. The centralized monitoring storage module stores system-level data and the overall diagnostic data of each module, but the external diagnostic unit has the ability to call the global data of each module of the system. Through data hierarchical and device-based management, the network load during control is reduced and the response time is improved. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0050] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A distributed control system, characterized in that: The system includes a comprehensive processing module and a plurality of basic modules associated therewith, each basic module corresponding to a type of standardized equipment, wherein: The basic module is used to obtain the corresponding standardized equipment information, perform standardized diagnosis on the standardized equipment information, generate and send the corresponding standardized control instructions according to the standardized diagnosis results, so as to control the corresponding standardized equipment to perform actions; wherein, when the standardized diagnosis result is a standardized equipment failure, it is sent to other basic modules; The basic module is also used to receive and parse the standardized diagnostic results sent by other basic modules, and when there is a correlation between the standardized diagnostic results and the basic modules, generate and send corresponding standardized control instructions to solve the standardized equipment failure; The comprehensive processing module is used to receive and analyze the standardized control instructions from the basic module, and when it is analyzed that the standardized equipment corresponding to the basic module fails and has not been resolved, generate an adjustment plan and send it to the corresponding basic module; The basic module is also used to receive the adjustment plan of the comprehensive processing module and control the corresponding standardized equipment to work according to the adjustment plan.

2. The distributed control system according to claim 1, characterized in that: The basic modules include: A standardized device docking unit, used to receive corresponding standardized device information and send standardized control instructions to the corresponding standardized device to control the standardized device to perform corresponding actions; A basic diagnosis unit, used to diagnose the standardized equipment information based on a preset standardized diagnosis algorithm, generate a standardized diagnosis result, and send it to other basic modules when the standardized diagnosis result is a standardized equipment failure; A basic control unit, used to generate standardized control instructions based on standardized equipment information and standardized diagnostic results; The basic control unit is further used to generate standardized control instructions according to the adjustment scheme of the comprehensive processing module; The basic control unit is also used to parse the standardized diagnostic results sent by other basic modules, and generate standardized control instructions when the standardized diagnostic results are parsed to have a preset mark; The basic communication unit is used to send standardized control instructions to the integrated processing module, receive the adjustment plan of the integrated processing module, receive standardized diagnosis results of other basic modules, and send standardized diagnosis results to other basic modules.

3. The distributed control system according to claim 2, characterized in that: The basic module also includes a basic storage unit for storing standardized diagnosis results and standardized control instructions.

4. The distributed control system according to claim 1, characterized in that: The comprehensive processing module includes: An integrated communication unit, used to receive standardized control instructions sent by each basic module, and send adjustment plans to the corresponding basic modules; Comprehensive processing module for parsing standardized control instructions: If the standardized control instruction and the standardized devices corresponding to other standardized control instructions associated with the standardized control instruction all fail, other basic modules to be started are determined based on the preset adjustment rules, and an adjustment plan is generated; If a standardized device corresponding to a standardized control instruction fails, and standardized devices corresponding to other standardized control instructions associated with the standardized control instruction operate normally, the status of the standardized devices corresponding to each standardized control instruction is recorded.

5. The distributed control system according to claim 4, characterized in that: The comprehensive processing module also corresponds to non-standardized equipment, and the comprehensive processing module also includes a non-standardized equipment docking unit and a comprehensive diagnosis unit, wherein: The non-standardized device docking unit is used to obtain corresponding non-standardized device information and send non-standardized control instructions to the corresponding non-standardized device; The comprehensive diagnosis unit is used to diagnose the non-standardized device information based on a preset non-standardized diagnosis algorithm to generate a non-standardized diagnosis result; The integrated control unit is further used to generate non-standardized control instructions according to the non-standardized device information and the non-standardized diagnosis results.

6. The distributed control system according to claim 4, characterized in that: The comprehensive processing module also includes a comprehensive storage unit for storing non-standardized diagnosis results and non-standardized control instructions.

7. The distributed control system according to claim 1, characterized in that: The distributed control system also includes an operation monitoring module corresponding to each basic module, which is used to send a first local control instruction to the corresponding basic module, so that the basic module controls the corresponding standardized equipment locally according to the first local control instruction.

8. The distributed control system according to claim 1, characterized in that: The distributed control system also includes a centralized monitoring and storage module, which is used to send a second local control instruction to the corresponding basic module and / or the integrated processing module, and to record the operating status information of each basic module and the integrated processing module; wherein the centralized monitoring and storage module is associated with all basic modules and the integrated processing module.

9. The distributed control system according to claim 8, characterized in that: The centralized monitoring storage module includes: A centralized communication unit, used for receiving the operation status information sent by each basic module and / or the integrated processing module, and sending the second local control instruction to the corresponding basic module and / or the integrated processing module; An external diagnosis unit, used for transmitting the operation status information to an external device and generating an external diagnosis result; An operation monitoring unit, configured to generate a second local control instruction according to the external diagnosis result and the operation status information; wherein the second local control instruction is used to regulate the operation status of the basic module and / or the integrated processing module; The centralized storage unit is used to perform hierarchical storage of the operation status information based on a preset storage principle.

10. The distributed control system according to claim 1, characterized in that: The standardized diagnosis result is a standardized diagnosis prediction result or a standardized diagnosis real-time result.

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