339 results about "Distributed control system" patented technology

The invention discloses an electromechanical equipment distributed control system based on the Internet of Things, which belongs to the technical field of distributed control, and specifically comprises the following steps: splitting a control task into task units, registration dependencies, data entries and task levels at an edge gateway, and generating a candidate scheduling range according to registration items; a calibration heartbeat with a reference segment is issued, and a driving node executes and returns a measurement record in an idle window for calibrating hardware fingerprints and link overhead and dynamically updating matching parameters; when computing power saturation is triggered, splitting a low-level task unit into suspensible fragments, setting a de-duplication execution identifier, opening a state interface, and completing migration check; selecting a target control node and a transmission path according to a calibration result, issuing fragment and state interface information, driving a target node to continue fragments according to an execution template, and guiding a source node to release occupied resources in sequence; and checking and comparing the execution result, and when the rule is triggered, recovering to the previous stable state according to the mapping rollback table.

The invention provides an AGC signal intelligent correction and control method, device, equipment and medium, and the method comprises the steps: collecting an AGC instruction signal of a power grid dispatching side, an actual power feedback signal of a power plant side and a unit operation state parameter, and constructing multi-source heterogeneous data; inputting the multi-source heterogeneous data into a pre-trained digital twinborn model to obtain a predicted value of the real power of the unit; calculating a real-time deviation between the predicted value of the real power and the actual power feedback signal, and dynamically compensating the AGC instruction signal based on the real-time deviation to generate a corrected AGC instruction signal; and on the basis of the corrected AGC instruction signal, a feedforward control signal is generated, and is superposed to a basic control instruction of a unit distributed control system (DCS) in an increment form, so that full-load section accurate control is realized, and the problems of accurate correction of the AGC signal, accurate prediction of real power and dynamic compensation are solved.

The invention discloses a DCS operation and maintenance method based on fusion dynamic weight distribution and fault chain deduction, and relates to the technical field of operation and maintenance of a distributed control system, and the method comprises the steps: obtaining a plurality of groups of source data of a monitoring region; corresponding monitoring periods are determined according to the multiple groups of source data, and differential monitoring period information is obtained after combination; according to the technical key points, a multi-source data fusion module is utilized to associate data of a DCS system, an associated production system and a cross-plant cooperative system, and fragmented data such as equipment operation data, production load fluctuation and cross-plant interaction information are woven into a complete data network through adjustment of space-time alignment and multi-dimensional verification; the global sensing capability not only solves the one-sidedness of traditional single data judgment, for example, environmental interference is easily misjudged by only depending on equipment temperature data, but also can capture cross-system implicit associated faults; and secondly, when the multi-source data are mutually verified, an evidence chain is formed through logic consistency verification, so that the misjudgment rate of suspected faults is greatly reduced.

The invention discloses an intelligent deep peak regulation system for a coal-fired power generation unit, and particularly relates to the technical field of power generation control, and the system comprises a multi-source data collection module which carries out the real-time parallel collection of all-dimensional operation parameters through a sensing network and unit decentralized control system interface disposed at a key node, and builds a multi-modal time sequence data flow; according to the method, a foresight control strategy is formed by constructing a fusion prediction model, sensing the running state of a unit in real time and predicting the change trend of key parameters, the defect of response lag of a traditional system is effectively overcome, and the purposes of accurate load tracking and advanced regulation and control under the working condition of deep peak regulation are achieved; a global optimization decision-making mechanism is established by adopting a deep reinforcement learning algorithm, optimal control parameters are calculated in real time through the intelligent peak regulation module, a boiler, a steam turbine and an environmental protection system are dynamically coordinated, the problem of insufficient stability caused by subsystem independent control is solved, and the optimal balance of safety, stability and economic benefits is achieved.

The invention relates to the technical field of PE lamination production control, and discloses a distributed control system for a high-speed PE lamination production line. A base material state monitoring module of the system collects surface tension parameters and thickness distribution data of a base material in real time, and a dynamic base material state matrix is generated in combination with the operation speed of the base material; the temperature field coordination module is used for matching a preset melt temperature gradient curve according to thickness distribution data in the dynamic base material state matrix and generating a partition temperature regulation and control instruction set; the extrusion pressure balance module analyzes the pressure fluctuation historical record of each extrusion section based on the partition temperature regulation and control instruction set, calculates the pressure compensation amount of adjacent sections and generates a pressure balance parameter table; the film layer fusion control module receives the compensation amount data, adjusts the rotating speed difference of the double-screw extruder and the opening degree parameter of a die head in combination with the real-time melt casting speed, and outputs a film layer fusion quality index; and the distributed execution module decomposes the film fusion quality index into independent control instructions and synchronously issues the independent control instructions to each execution unit.

The invention discloses a nuclear power plant distributed control system and control method, and relates to the technical field of nuclear power plant digital control, and the method comprises the steps: a global optimization layer generates a cross-unit general control strategy library based on a transfer learning algorithm according to the decision period of the global optimization layer; when the coordination control layer operates by using the transferable control strategy corresponding to the unit equipment where each two-loop subsystem is located, the corresponding two-loop subsystem control weight is dynamically allocated based on the multi-agent attention network according to the decision period of the coordination control layer; when the execution control layer operates by using the dynamically distributed two-loop subsystem control weight, the first-loop temperature, the first-loop pressure and the coolant flow are obtained according to the decision period of the control layer, a safety constraint matrix is calculated through a safety manifold projection module, and a quadratic programming problem with a relaxation factor is solved; and the corrected control weight of the two-loop subsystem is obtained and converted into a control instruction to be issued to a DCS field control station.

The invention discloses a multi-language internationalization translation method and system, a medium and equipment, and is applied to a distributed control system.The method comprises the steps that a background processing program reads a user visible text wrapped by an internationalization identifier in a source file and stores the user visible text as a json file; the automatic translation large model translates the user visible text to obtain the translated user visible text, and the background processing program stores the translated user visible text into the json file again; when the distributed control system runs based on a source code, automatically loading a dynamic library, matching a user visible text required to be translated of an internationalized identifier package with a json file, and displaying the user visible text required to be translated as a translated user visible text based on a result returned after matching, the multi-language version can be obtained without modifying a large number of source codes, the system language switching efficiency is improved, the labor cost is reduced, and the system maintenance efficiency is improved.

The invention provides a thermal power generating unit full-working-condition self-adaptive peak regulation control system and method, and the system comprises a data module which is used for collecting and preprocessing the operation data of a thermal power generating unit in real time; the hybrid prediction module is used for performing parallel prediction and dynamic credibility fusion on the operation data and outputting a prediction sequence of key parameters; the strategy modulation module is used for constructing a unit operation state portrait according to the operation data and outputting a dynamic decision weight based on the operation state portrait; the decision optimization module is used for performing prospective deduction and multi-target game decision on the multiple groups of candidate control instructions based on the prediction sequence and the dynamic decision weight, and outputting an optimal control instruction; and the control execution module is used for issuing the optimal control instruction to a decentralized control system of the unit. According to the thermal power generating unit peak regulation control system, online self-adaption and prospective optimization can be achieved, the safety of the whole process is guaranteed, and the adaptability, safety and economical efficiency of a unit in the full working condition range are guaranteed.

The invention relates to the technical field of computer graphic processing, and discloses a method for automatically drawing a DCS (Distributed Control System) picture into a real-time database picture, which comprises the following steps of: firstly, identifying a DCS source file format, directly analyzing a public text format or intercepting a bottom layer rendering instruction for a private binary format, and extracting standardized discrete data; constructing an intermediate vector model, and performing coordinate normalization and curve smoothing processing on the static primitives by using an affine transformation matrix; meanwhile, syntactic analysis is conducted on the control script to construct an abstract syntax tree, and dynamic logic is converted; then recombining a composite object based on spatial semantics, and repairing pipeline topology connection by utilizing automatic adsorption and an orthogonal routing algorithm; and finally, calling a target system interface to complete object instantiation and persistent storage. According to the invention, the automatic high-fidelity migration of the DCS picture to the real-time database is realized, the labor cost is reduced, and the consistency and accuracy of the monitoring picture are ensured.

The invention discloses an automatic testing device and method for a self-defined bus of a DCS, and belongs to the technical field of testing of industrial control systems.The device comprises a controller, an FPGA module, an adapter module, a main control case and a bus adapter card, the FPGA module serves as a lower computer to execute physical layer and data link layer processing of a communication protocol, and achieves electrical matching with a DCS custom bus through an adapter. A customized backboard and a bus adapter card are arranged in the main control case and are used for connecting a to-be-tested main control card, an I / O card and a communication card; the method is based on a layered protocol architecture, LVDS signal transmission and 4B / 5B coding are adopted in a physical layer, CRC32 verification and frame packaging are carried out in a data link layer, and node simulation, message framing, fault insertion and state monitoring are completed in an application layer. The method can effectively solve the problem that the private protocol bus lacks general testing means, and has high expandability and deep testing capability.

The invention discloses a distributed sequential logic conflict resolution method for a distributed control system, which relates to the technical field of automatic control, and can accurately calculate the queuing retention time length of an instruction in a network by acquiring the real-time load and identifier of each network node in an instruction transmission path, thereby improving the accuracy of the queuing retention time length of the instruction. The local clock of the controller is subjected to high-precision correction by combining the basic transmission delay of the link, so that the real sequential relationship of the instruction is restored, and the interference of clock asynchronization and network delay fluctuation in the distributed system on sequential judgment is fundamentally eliminated; meanwhile, on the basis of a real-time working condition self-adaptive physical constraint model, the theoretical duration needed by equipment state change is quantified, the corrected clock difference value and the theoretical duration are dynamically matched, causal instructions can be effectively distinguished from the physical level, and the accuracy and reliability of conflict resolution are remarkably improved.

The invention relates to the technical field of multi-source data fusion, in particular to a heat supply user room temperature measurement method and system based on multi-source data fusion, and the method comprises the following steps: S1, heat source data collection: directly collecting boiler operation data from a heat source plant distributed control system, and uploading the heat source data to an Internet of Things cloud platform; s2, multi-source data are collected, the multi-source data comprise user indoor temperature data, heat supply pipe network data and meteorological data, and the multi-source data are uploaded to an Internet of Things cloud platform; s3, data fusion: fusing the data in the S1 and the S2 in an Internet of Things cloud platform, and dynamically calibrating indoor temperature data; and S4, the system users of different levels pass authority authentication, and the fused and calibrated data are acquired from the Internet of Things cloud platform. According to the invention, a double-layer algorithm is constructed by optimizing the LSTM network and improving the grey wolf algorithm, the room temperature calibration capability in a dynamic environment is improved, and the efficiency precision is improved.

This application discloses a switch expansion cable, relating to the technical field of distributed control systems. The switch expansion cable and the switch communication cable are different colors to distinguish them. The switch communication cable is used to connect the control station to the switch or the switch to the operator station. In the embodiments provided in this application, the switch expansion cable and the switch communication cable are distinguished by color. This method prevents network switch loop operation caused by mis-insertion of the switch expansion cable, reduces the risk of DCS system paralysis, and thus reduces the risk of process system loss of control.

Embodiments of the present disclosure relate to migrating control logic types in a distributed control system (DCS). The present disclosure relates to migrating a control logic type from a conventional engineering tool (2a) to a modern engineering tool (2b) in a DCS (1) controlling equipment (11) in an industrial plant (10). Comprising the steps of obtaining a control logic type of a traditional format from a traditional engineering tool; reformatting the control logic of the control logic type into a modern format compatible with the modern controller (5b); copying a graphic instruction of a control logic type; updating the list of attributes of the control logic type such that the format of the corresponding communication address field associated with each listed attribute is changed from a conventional format to a modern format compatible with a modern controller; and associating the reformatted control logic, the replicated graphic instruction, and the updated list of attributes with a migrated control logic type in a modern engineering tool library.

The application provides a fire control method and device and electronic equipment, and relates to the technical field of nuclear power, and the method comprises the following steps: in the case that a fire alarm signal sent by a fire detector is received by a fire alarm system, the fire alarm system is used to send the fire alarm signal to a distributed control system (DCS); the fire alarm system is used to receive a device state control instruction sent by the DCS based on the fire alarm signal; and the fire alarm system is used to control the fire equipment to execute a fire operation indicated by the device state control instruction, wherein the fire equipment is the fire equipment indicated by the device state control instruction. According to the application, the fire alarm system is used to control the fire equipment to execute the fire operation, the fire alarm system can execute corresponding fire operations according to the device state control instruction of the DCS, and the fire safety of the nuclear power plant can be improved.

The invention relates to the technical field of sintering flue gas circulation, and discloses a sintering machine flue gas circulation cascade adjusting, mixing and distributing control system which comprises a sintering machine provided with a sealing cover in the length direction, and the sealing cover is provided with a sintering initial stage section, a sintering middle stage section and a sintering later stage section; and the mixing and distributing mechanism is communicated with the sealing cover. The mixing and distributing mechanism is used for mixing circulating flue gas, annular cooling air and dust removal air of a shuttle type distributor in a preset proportion according to the oxygen demand quantity and the circulating flue gas demand quantity of the sintering initial stage, the sintering middle stage and the sintering later stage to form mixed flue gas, and the mixed flue gas is introduced into the sintering initial stage, the sintering middle stage and the sintering later stage; the utilization rate of waste heat and oxygen in circulating flue gas is greatly increased, so that the whole sintering machine meets the normal production requirement under the working condition that the average oxygen content is lower than 18%, the flue gas circulation rate is increased, and the solid fuel consumption and the CO content are reduced.

The utility model discloses a safety interlocking device for vaporization of low-temperature liquid oxygen, liquid nitrogen and liquid argon, and relates to the technical field of vaporization equipment. The device comprises a vaporizing tank, a DCS (Distributed Control System), a buffer pressure tank and an exhaust pipeline, wherein a material coil pipe and a steam coil pipe are arranged in the vaporizing tank; a water bath layer is arranged in the vaporizing tank; a steam inlet pipe connected with the steam coil pipe is arranged at the top of the vaporizing tank, a steam regulating valve is arranged on the steam inlet pipe, and a material inlet pipe connected with the material coil pipe is arranged at the bottom of the vaporizing tank. According to the utility model, through the design of the DCS control system, the steam regulating valve, the liquid pump, the liquid level sensor, the in-tank temperature sensor and the pipe body temperature sensor are connected with the DCS control system, when the temperature sensors detect temperature deviation, timely and safe interlocking control can be realized; safety accidents caused by pipeline leakage in the vaporization tank can be monitored, and the safety of vaporization equipment is greatly improved.

A distributed control system includes low-level controllers interacting with field devices, a high-level controller providing instructions, a human-machine interface that receives an input from a user transmits it to the high-level controller, receive from the high-level controller state information of the process, and display this state information to the user; first and second instances of backend software that are communicatively coupled to the high-level controller, first and second instances of frontend software running on respective client devices of the plant, and a software manager that indicates to each client device which version of frontend software is available for the client device, wherein the first instance of frontend software interfaces with the version of the first instance of backend software, and the second instance of frontend software interfaces with the version of the second instance of backend software.

The invention relates to the technical field of automatic packaging systems, in particular to an automatic packaging line weighing system which comprises at least one pair of photoelectric switches, a weighing device, a sorting device and a distributed control system. The photoelectric switch is used for detecting whether the product package enters or leaves the weighing area; the weighing device is used for weighing the weight of a product package; the sorting device is used for removing overweight or ultralight product packages; the distributed control system communicates with the photoelectric switch and the weighing device, and receives and processes the weight information of the product package; and the distributed control system is provided with a normal range of the weight of the product package and is used for comparing the actual weight of the product package with the normal range and executing operation based on a comparison result. The operation efficiency and the weighing precision of the automatic packaging line can be improved, and it is ensured that the product packaging weight meets the standard.

The utility model relates to the technical field of control equipment, in particular to a seawater reverse osmosis electromagnetic valve box. According to the seawater reverse osmosis electromagnetic valve box, a plurality of valves are electrically connected with a programmable logic controller; a man-machine interaction interface is arranged on the outer side face of the box body, and the man-machine interaction interface and the programmable logic controller are connected through a communication module so as to control the valves. The programmable logic controller is electrically connected with the distributed control system so as to remotely control the plurality of valves through the programmable logic controller; the probe is connected with the transmitter, the probe is used for detecting seawater, and the transmitter is used for outputting a detection result of the probe. According to the technical scheme, by introducing the programmable logic controller, the man-machine interaction interface and the communication module, remote control over the valves is achieved, the automation degree is improved, and the technical problems that a seawater reverse osmosis electromagnetic valve box is low in automation degree and difficult to achieve remote control are jointly solved.

The application provides a PLC system communication method and system based on a DCS redundant network, relates to the technical field of industrial automation control system communication network integration, and comprises the following steps: network architecture reconstruction, direct access of a programmable logic controller (PLC) to a redundant industrial Ethernet of a distributed control system (DCS), and formation of a unified local area network; IP address planning, allocation of addresses of the same preset IP network segment to controllers of the DCS, PLCs, industrial personal computers and optional communication modules, and ensuring direct communication between devices; the application can save special communication modules and supporting equipment, reduce direct hardware cost, reduce cabinet space occupation and wiring cost by fully utilizing the existing redundant network infrastructure of the DCS; for a system containing multiple PLCs, the cost advantage is more obvious, no additional investment in redundant communication hardware is needed, and the overall investment is further reduced.

The invention discloses a card distribution method and device based on a large language model, a medium and a computer, and relates to the technical field of industrial automation and artificial intelligence. The method comprises the following steps: acquiring equipment measuring point description information of power equipment, and inputting the equipment measuring point description information into a pre-trained information identification model to identify equipment name information and equipment parameter information of the power equipment in the equipment measuring point description information; determining a decentralized processing unit corresponding to the power equipment in a preset processing unit comparison table based on the equipment name information, and determining a decentralized control system card corresponding to the power equipment in a preset card comparison table based on the equipment parameter information; and generating a card distribution file of the power equipment based on the equipment name information of the power equipment, the decentralized processing unit corresponding to the power equipment and the decentralized control system card. According to the method, the card distribution efficiency of the power equipment can be remarkably improved.

The invention relates to an automatic production device system and a production method. The device system comprises at least one raw material storage tank, a reaction device and a control system, an inlet of each raw material storage tank is connected with a raw material pipeline through a first diaphragm pump and a pneumatic valve; an outlet of each raw material storage tank is connected with a reaction device through a first pneumatic control valve; the control system comprises DCS (Distributed Control System) control units configured for the raw material storage tanks; each raw material storage tank is provided with a first weighing module, and the first weighing module is electrically connected with the DCS control unit of the corresponding raw material storage tank; the pneumatic valves and the first pneumatic adjusting valves are electrically connected with the DCS control units of the corresponding raw material storage tanks respectively and independently. According to the invention, automatically-controlled raw material conveying, accurate weighing and sequential feeding can be realized, so that the production precision and the production efficiency are remarkably improved, and the safety in the production process is improved.

The application relates to the technical field of distributed control, and particularly discloses a production line distributed control system for improving the qualified rate of lithium batteries, which is used for solving the problem of inconsistent test conditions caused by distributed water cooling control in the lithium battery formation and capacity grading production line, converts the cooling action and the cell temperature response of each storage position in the capacity grading process into a thermal history difference expression, and makes the same batch of cells no longer directly compared according to the final capacity and the internal resistance, but first classified according to the degree of similarity of the thermal history, and then completes the capacity and internal resistance consistency grouping within the same type range. For the remaining cells that cannot be grouped within the same type range, the response results under the same disturbance condition are obtained through a unified cold pulse, the capacity comparison criterion is corrected, and secondary grouping across categories is carried out, so that the influence of local cooling intervention difference on the grouping judgment is reduced, and the utilization rate and the grouping rate of the cells are improved.

This invention relates to the field of waste-to-energy incineration technology and provides an artificial intelligence-based combustion control method for waste-to-energy boilers. The method includes: collecting data from a distributed control system, flue gas monitoring, and feed metering, aligning these data with a unified time frame, and generating combustion condition data; calculating drift residuals and missing rates, classifying and labeling them to obtain confidence weights; calculating equivalent lower heating value and moisture content from steam flow and feed flow based on energy balance, updating parameters only during the stable steam and carbon monoxide windows; identifying the equivalent time delay from control quantities to steam and emissions based on cross-correlation peak values, writing this information into the prediction model after stabilization, and performing shift compensation; constructing hard constraints for steam and emissions based on aligned predictions, writing confidence into the cost function, using MPC to calculate the feasible region, selecting incremental deployments within the policy network domain, and backing down and auditing for low confidence levels.

The invention belongs to the technical field of distributed control, and particularly relates to a distributed reactor pressure vessel inspection control system. Comprising a motion controller, a main control computer, sub-control computers and a lower computer, the main control computer is respectively connected with the plurality of sub-control computers to form an upper computer system, the sub-control computers communicate through the main control computer to obtain information and control authority, and the main control computer uniformly communicates with the lower computer to send information. The distributed control system has the beneficial effects that the independence of each manipulator and an inspection tool is ensured by the distributed control system architecture, and meanwhile, the management of control authority and the reading of data of all controllers in the system are realized through the architecture of the master control computer and the sub-control computer.

The application discloses a gas turbine regulation and control method and system based on a decentralized control system, and particularly relates to the field of gas turbine regulation and control, and comprises the following steps: S1, synchronously collecting gas turbine operation parameters by using a distributed sensor array; S2, performing feature engineering processing on local perception data by an edge computing node; S3, based on a decentralized control system architecture, adopting an improved model predictive control algorithm to realize control quantity decoupling; S4, after completing each control cycle, evaluating the control effect; S5, establishing a regulation and control threshold, judging the evaluation according to the regulation and control threshold, and issuing a corresponding signal according to the judgment; the application synchronously collects multi-field coupling parameters by using a distributed sensor array and realizes real-time processing of local data through an edge computing node, thereby improving the dynamic response capability of the gas turbine under multi-dimensional working conditions and reducing the occurrence rate of combustion instability events.

The invention provides a biomass fuel preparation blending combustion control system and method based on an electricity price valley period, and belongs to the technical field of biomass fuel preparation blending combustion control. In order to make full use of off-peak power and construct an economical, efficient and environment-friendly biomass fuel preparation and blending combustion system, the adopted technical scheme is that an electricity price prediction module and a task scheduling module are arranged in an intelligent scheduling and control unit, and the intelligent scheduling and control unit is electrically connected with a power plant distributed control system through a wire; the efficient fuel preparation unit is electrically connected with the intelligent dispatching and control unit through a wire, and the intelligent dispatching and control unit sends out an instruction to control the efficient fuel preparation unit to operate at a high load in a low-ebb electricity price period. A closed negative-pressure raw material shed, a steam rotary dryer, a granulator, a briquetting machine and a storage and conveying system are sequentially arranged in the efficient fuel preparation unit in the material flow direction; the method is applied to blending combustion control of biomass fuel preparation.

The invention relates to a method (100) for modifying a control and / or regulation function (11) of a distributed control and / or regulation system (1), comprising the following steps: - Providing (101) the control and / or regulation function (11), wherein the control and / or regulation function (11) controls at least one actuator (3) of the distributed control and / or regulation system (1) based on an input from at least one sensor (2) of the distributed control and / or regulation system (1), wherein the control and / or regulation function (11) is operable in at least two different operating modes (12) with respect to a control performance, - Monitoring (102) at least one parameter of the distributed control and / or regulation system (1) of the distributed control and / or regulation system (1), - Determining (103) a requirement for the control performance of the control and / or regulation function (11) of the distributed control and / or regulation system (1) and an availability of computing resources (4) of the distributed control and / or regulation system (1) for the execution of the control and / or regulation function (11), wherein the determination (103) is carried out according to at least one trigger condition within the framework of monitoring (102), - Modifying (104) the control and / or regulation function (11) of the distributed control and / or regulation system (1) based on a result of determining (103). Furthermore, the invention relates to a computer program, a device and a storage medium for this purpose.

The utility model belongs to the technical field of power supplies, and particularly discloses a novel distributed power supply device of a DCS (Distributed Control System), which comprises four power supply modules and three interface boards P9, P10 and P11, the four power supply modules are respectively a main line power supply module P1, a primary auxiliary power supply module P2, an auxiliary line power supply module P3 and a secondary auxiliary power supply module P4, and each of the interface boards P9, P10 and P11 is provided with seven interfaces. According to the scheme, the power supply device of the DCS system is replaced, replaced and transformed, an old power supply module adopting a cooling fan is canceled, and power supply configuration is optimized. The maximum benefit can be created with the shortest time and the least investment, and the comprehensive control capability and the production management level of the unit auxiliary control DCS control system are improved. By means of dispersive arrangement, heat dissipation is good, a cooling fan does not need to be arranged, dust resistance is high, operation is safer and more reliable, the service life is longer, the requirements of various operation working conditions are met, and safe and efficient operation of a unit is guaranteed.