21 results about "Field bus" patented technology

The application relates to the technical field of industrial measurement and control software, and discloses a nationwide state-oriented measurement and control platform which adopts a layered architecture and comprises the following: an application service layer for providing a man-machine interactive interface and executing business logic; a unified business message layer for providing a standardized data communication interface; a multithreaded time sequence scheduling engine for parallel receiving, scheduling and processing real-time tasks; a unified hardware abstraction layer for encapsulating the differences of different field bus drivers and providing a unified device operation interface; a domestication adaptation layer constructed on a Qt core framework and used for providing a unified driving abstraction across domestic chips and operating systems; and a hardware access layer for directly interacting with physical hardware devices.The application realizes 'one-time development and cross-domestic platform deployment', significantly improves the real-time performance, maintainability and expandability of the system under the domestic ecological environment, and meets the dual requirements of self-controllability and high performance.

In a field bus system, the sub-users (3) each have a sub-connection (33) and a functional connection (34) connected to the sub-connection (33), wherein in each sub-user status information is acquired which indicates whether the functional connection is active or inactive. A telegram output by a master user in the field bus system has at least one data report, wherein the status information of the sub-users (3) addressed in the data report is acquired together with the telegram. Furthermore, a counter field of the data report is changed by the sub-connections (33) of the sub-users (3) which have processed the useful data field in a manner predefined for the data transmission operation performed in each case. The data report is assigned an expected value of the counter field which arises when the useful data field has been processed by the sub-users (3) addressed in accordance with the data transmission operation predetermined in the command field. The master user (2) then determines the expected value of the counter field of the data report on the basis of the status information acquired with the telegram and compares it with the value of the counter field in the data report processed by the sub-users (3) addressed in order to determine a processing error in the data report processed by the sub-users (3) addressed in the event of a deviation.

The invention relates to a method for monitoring the communication between a fieldbus (1) and a sub-bus module (20), wherein the sub-bus module (20) is controlled via a sub-bus stack (30) through the fieldbus (1), a sub-bus (2), and a sub-bus master (10). To reliably detect sporadic or infrequent errors, the data of the sub-bus stack (30) is tapped at the field level of the sub-bus stack (30) and supplied to a storage and / or evaluation unit (60) via a communication module (50).

The invention relates to a borehole pump, a submersible motor-driven pump (1) or a submersible motor-driven agitator (26), comprising: a submerged motor housing (3); an electric motor (6) arranged within the motor housing (3) for driving an impeller of the borehole pump, the submersible motor-driven pump (1) or the submersible motor-driven agitator (26); a motor controller (14) arranged on the motor housing (3) for controlling the electric motor (6); and a sensor device (21) arranged inside the motor housing (3) for measuring at least one operating parameter of the borehole pump, the submersible motor-driven pump (1) or the submersible motor-driven agitator (26), the sensor device (21) being spatially separated from the motor controller (14) and being connected to the motor controller (14) by means of a field bus.

Electrical machine (1000) with at least one connector (100) for electrical connection of components of a fieldbus system, the connector (100) with at least one circular plug (110a, 110b), a flange (120) having at least one light transmission area (125a, 125b), and with at least one light source (130a, 130b) arranged in the area of ​​the at least one light transmission area (125a, 125b).

The application discloses a field bus relay method with optical channel expansion and related devices, which comprises a main control unit, an electric signal relay unit and an optical channel expansion unit. The electric signal relay unit performs signal regeneration, waveform shaping and time sequence recovery on the attenuated bus signal; the optical channel expansion unit realizes bidirectional seamless conversion between the electric signal domain and the optical signal domain; the main control unit supports flexible configuration of four relay modes of electric-electric, electric-optical, optical-electric and optical-optical, and integrates adaptive equalization algorithm and fault self-healing isolation mechanism. Through the photoelectric hybrid architecture, a single module can adapt to various complex industrial scene scenarios, effectively resist strong electromagnetic interference while extending the communication distance, dynamically compensate signal transmission loss, and realize millisecond-level automatic isolation and network partial self-healing when the network segment fails, thereby significantly improving the communication reliability and maintainability of the field bus system.

The application provides a field bus remote diagnosis method and related device, and belongs to the technical field of industrial communication network diagnosis.The application solves the problems that the traditional field bus diagnosis system is difficult to realize real-time monitoring of remote equipment and remote communication is susceptible to electromagnetic interference, resulting in low data transmission reliability.The device comprises an optical communication unit, a data processing unit and a diagnosis analysis unit;the optical communication unit performs photoelectric conversion on the received optical signal and outputs a clock synchronization electrical signal;the data processing unit decodes and protocol analyzes the field bus sending data;the diagnosis analysis unit extracts the slave station response delay time, frame error rate, signal amplitude attenuation coefficient and bus load rate based on the analyzed data, and identifies faults accordingly.The application adopts optical communication transmission and adaptive clock recovery technology, realizes high-reliability remote real-time monitoring and intelligent fault diagnosis against strong electromagnetic interference within a range of 10 kilometers, and can be widely applied to large industrial fields such as thermal power generation and petrochemical industry.

This invention provides a method and related apparatus for generating diagnostic point tables for fieldbus devices, belonging to the field of industrial automation diagnostic technology. The method includes: parsing the fieldbus data stream to obtain a diagnostic information feature vector containing a data source identifier, function code, and parameter index; mapping the diagnostic information feature vector to a preset diagnostic information classification rule base to obtain diagnostic information items with physical meaning categories; standardizing and packaging the diagnostic information items based on a preset packaging rule base to generate a structured diagnostic data package; performing mapping and conversion based on a preset diagnostic point table standard format to obtain a diagnostic point table file conforming to the standard format; further establishing a dynamic association mapping between diagnostic point identifiers and the real-time status of the device, constructing a device status transition matrix, and realizing real-time updates of the diagnostic point table according to changes in device status. This invention solves the problems of scattered and inconsistent formats of diagnostic information by automatically parsing and standardizing the packaging of the physical meaning of diagnostic information, achieving standardized management and dynamic adaptation of diagnostic data, and significantly improving the efficiency and accuracy of diagnostic data processing.

The application relates to the technical field of industrial control, and particularly discloses an autonomous response method and system for a thermal power plant system architecture, which comprises the following steps: converting a load response signal and a device risk signal of a thermal power plant into standardized data flow; multi-dimensionally monitoring a trigger stability mark and a deviation record in the standardized data flow, and combining a physical process characteristic quantity in the standardized data flow into a unified situation representation vector; inputting the unified situation representation vector into an online joint optimization rule library, rolling optimization is performed on an initial deviation sequence in the unified situation representation vector, and an optimal control target sequence is obtained; each target value in the optimal control target sequence is decomposed into a fuel regulating valve opening degree instruction, a steam turbine regulating valve opening degree instruction and a desuperheating water valve opening degree instruction, and is sent to a controller and a field bus device in the thermal power plant; and the application significantly improves the autonomous response accuracy, operation stability and economy of the thermal power unit under the deep peak regulation and flexible regulation scene.

The present application relates to the technical field of tracking radar, especially to a tracking radar servo system and a control method thereof, comprising a radar signal processing system, a motor driver, a direct drive motor, an encoder and a radar antenna, the radar signal processing system and the motor driver exchange information by using field bus, the motor driver is connected with the direct drive motor for controlling the direct drive motor, the output end of the direct drive motor is connected with the fixed end of the radar antenna for driving the radar antenna to rotate, and the encoder is installed on the direct drive motor for position detection of the direct drive motor, the present application provides a tracking radar servo system and a control method thereof for simplifying the function of the radar servo system by changing the instruction form of the radar signal processing and the control structure of the motor driver of the servo system.

This invention belongs to the field of intelligent equipment technology, specifically an industrial fieldbus intelligent valve island, including a bus expansion module, a power module, a communication control module, a valve plate unit, and an air circuit module; it also includes a pressurization chamber, which is located at the air inlet end of the air circuit module. The air inlet end of the pressurization chamber is connected to the air source, and the air outlet end is provided with a pressure reducing chamber, which is equipped with a gas monitoring sensor; the air source delivers air medium into the air circuit module from the air inlet end of the pressurization chamber. The air in the pressurization chamber first flows and contacts the pressure plate. The pressure plate resists the impact of the air and deflects the airflow direction. The air is guided by the inner wall of the pressurization chamber and the pressure plate to flow into the interior of the sealing cover. The interior of the sealing cover is divided into left and right parts by the pressure plate in the middle. After the air flows to the left part of the sealing cover, it passes through the filter cotton to the right part. The filter cotton filters impurities in the air and intercepts solid impurities such as industrial dust, preventing impurities from jamming the valve core and scratching the sealing surface, thus improving the filtration effect of the filter cotton.

The application discloses a field bus network silent intrusion device detection method and related equipment thereof, wherein all normal communication signals of benign terminal devices in a field bus network are sampled by a monitoring device, amplitude characteristics are extracted, and channel state characteristics capable of reflecting terminal device hanging conditions are constructed in cooperation, difference comparison is performed with channel state group fingerprints stored in the monitoring device, a detection threshold is generated in a low calculation cost form by using a hypothesis testing principle, rapid detection of an intrusion signal is performed in a difference signal, and it is effectively judged whether an external silent intrusion device exists in the field bus network; the detection scheme simultaneously supports rapid updating of the channel state group fingerprints, adapts to changes of a detection environment, and solves a security technical problem that an external silent intrusion device cannot be passively and adaptively detected in the field bus network.

The application provides a field bus equipment state maintenance decision support system, which comprises the following steps: obtaining original monitoring data of field bus equipment in real time, outputting a quantitative real-time health state index of the equipment; predicting the remaining effective life based on the real-time health state index and an improved Weibull distribution model; and generating an optimal maintenance plan based on the remaining effective life of the equipment, the equipment importance classification, the fault risk probability and the available maintenance resource constraint, wherein, the reliability function of the improved Weibull distribution model is constructed based on time-varying covariates, and the time-varying covariates include a degradation rate of the health state index and a cumulative amount of field bus communication error codes; and the application realizes the transition from periodic maintenance to predictive maintenance, and significantly improves the scientificity and economy of the maintenance decision.

The application provides an online intelligent diagnosis knowledge base construction method of a field bus device, and belongs to the technical field of industrial automation device fault diagnosis. The method comprises the following steps: acquiring multi-source heterogeneous original diagnosis data, constructing a structured multi-dimensional knowledge model, and the multi-dimensional knowledge model comprises a device type ontology, a fault mode ontology and a diagnosis measure ontology; based on the multi-dimensional knowledge model, a multi-level knowledge association network is constructed, and the multi-level knowledge association network comprises four types of nodes and six types of relationship types; and based on the multi-level knowledge association network, an online intelligent diagnosis knowledge base is constructed. Through ontology modeling and graph database technology, the application realizes systematic integration and structured representation of diagnosis knowledge, constructs a knowledge association network comprising devices, faults, causes, measures and complex logical relationships thereof, solves the problems of scattered diagnosis knowledge being difficult to utilize, insufficient knowledge association expression and static solidification of the knowledge base being unable to evolve in the prior art, significantly improves the diagnosis accuracy and knowledge management efficiency of the field bus device, and is suitable for intelligent diagnosis and maintenance management of process industries such as electric power and petrochemical industry.

This invention provides a method for receiving and decoding fieldbus data, relating to the field of data processing technology. The invention receives petrochemical fieldbus data in real time, then sequentially determines the preamble, start delimiter, end delimiter, and valid data. The valid data is then Manchester decoded and sent to the microcontroller's UART interface. The data received from the UART is then Manchester encoded and output to the fieldbus MAU interface via the microcontroller's SPI interface. This invention solves the current situation where fieldbus transmitter communication interface development relies on dedicated fieldbus communication controller chips, while being compatible with both Foundation Fieldbus and PROFIBUS PA fieldbuses. The UART-based transparent transmission function simplifies the hardware interface, eliminating the need for complex memory bus interfaces, making microcontroller selection easier for users, reducing the development difficulty of fieldbus transmitters, further reducing costs, and enabling product miniaturization.

This invention provides an intelligent diagnostic method for PA (Power Amplifier) ​​networks, belonging to the field of industrial fieldbus technology. It can at least partially solve the problems of existing PA bus systems, such as difficulty in effectively distinguishing voltage interference from equipment faults, low diagnostic accuracy, and the inability to achieve online real-time diagnosis. The invention includes: multi-level isolation processing and data acquisition of PA bus signals; multi-level wavelet decomposition of the acquired digitized signal data to extract energy distribution vectors; inputting the energy distribution vectors into a support vector machine classifier and a neural network classifier respectively to obtain initial confidence scores; dynamically adjusting the fusion weights based on the signal-to-noise ratio to calculate the final decision confidence score; and based on the classification results, using an adaptive filter to suppress voltage interference and triggering time-domain reflection localization for equipment faults. This invention achieves online separation and diagnosis of PA bus interference and faults.

The application provides a field bus online intelligent diagnosis management and control method and related device, including the following steps: performing feature level fusion and decision level fusion on multi-source heterogeneous data, and generating a device health state evaluation result based on the fused data; generating early warning information and maintenance strategies based on the device health state evaluation result; the application solves the problems of single function and poor expansibility of existing diagnosis tools, supports high concurrency access of more than 1000 devices, and can be widely applied to industrial scenes such as thermal power generation.

This invention discloses a BIT centralized management method based on fieldbus, belonging to the field of communication technology. It adopts a two-level networking architecture system, consisting of underlying CAN node devices and a first-level centralized data aggregation module. The data aggregation module implements more than a dozen CAN bus interfaces and network functions, enabling bidirectional data interaction between the network and the dozen or so CAN buses through programming. During normal system operation, each CAN bus interface of the data aggregation module actively collects information from subordinate node devices and integrates all CAN data into network data, actively reporting it to the system master controller. This invention replaces the original three-level management architecture with a two-level architecture using gigabit high-speed Ethernet and multiple CAN buses, adapting to the miniaturization and low-cost management requirements of large-scale intelligent active systems. Compared to the original architecture, it covers all functions with lower hardware costs, simplifies data management and distribution control, and greatly improves maintenance efficiency.