79 results about "Field bus" patented technology

The invention discloses a PON-based multi-protocol communication method and device, and the method comprises the steps: distributing a corresponding internal scheduling time slot to each network protocol processing unit for data uploading to each network protocol processing unit when a data processing module detects that the network protocol processing units connected with each field bus device have to-be-uploaded service data; and when one internal scheduling time slot is used up, interrupting the uploading of the service data until the next internal scheduling time slot allocated to the internal scheduling time slot is recovered from interrupting the uploading of the data. And the PON module monitors a global scheduling time slot allocation instruction issued by the optical line terminal in real time, converts an uploaded data frame into an electric signal, transmits the electric signal to the optical module through an internal link, converts the electric signal into an optical signal through the optical module in an allocated global scheduling time slot, and uploads the optical signal to the optical line terminal through an optical distribution network. Real-time performance and orderliness of transmission of service data in multiple field bus devices in a PON network are achieved, the requirement of industrial communication for data transmission is met, and transmission resource distribution is optimized.

The invention relates to the technical field of coal mine underground dust prevention and control, in particular to a coal mine dust concentration over-limit spraying and dust-settling device and a control system thereof.The coal mine dust concentration over-limit spraying and dust-settling device comprises a dust sensing array composed of a plurality of dust concentration sensors arranged in a spatially separated mode, a main sensor arranged close to a dust generation source, and a dust concentration sensor arranged close to the dust generation source, the at least two auxiliary sensors are sequentially arranged at a set interval; the wind speed sensing unit is mounted in a preset range of the upwind direction of the main sensor and is used for synchronously capturing real-time wind speed; the partition spraying actuator comprises independent spraying units corresponding to the positions of the sensors, and each unit is provided with a quick-response electromagnetic valve and an atomizing nozzle; the multi-source information fusion controller is connected with the dust sensing array, the wind speed sensing unit and the partition spraying actuator through an industrial field bus; through dynamic threshold setting, dust diffusion path monitoring and prediction interception technologies, the problems of response lag and excessive spraying of a traditional fixed threshold system are solved.

The invention discloses a multi-protocol compatible hydropower station field bus photoelectric signal synchronous acquisition device and method, and relates to the technical field of industrial bus testing, the device comprises a core control layer, a signal conditioning layer, a photoelectric interface layer, a clock synchronization layer, a power management layer and a data storage and transmission layer; the core control layer adopts a dual-core framework of a domestic Loongson 2K0300 main control unit and a domestic FPGA (Field Programmable Gate Array) time sequence control unit; the clock synchronization layer adopts a two-stage synchronization mechanism of'local crystal oscillator time sequence control + NTP network clock calibration '; and the signal conditioning layer is integrated with a multi-protocol self-adaptive conditioning module and an industrial-grade anti-interference module. The method comprises the steps of clock initialization and calibration, parameter configuration, photoelectric signal parallel acquisition and time sequence synchronization, and data preprocessing and transmission, so that synchronous acquisition of six types of bus protocol photoelectric signals is realized. The system has the advantages of multi-protocol compatibility, autonomous controllability, good portability and the like, and provides reliable data support for bus communication quality evaluation and fault diagnosis.

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.

The invention provides a real-time deviation correction execution device for intelligent pushing of a large-span steel beam. The real-time deviation correction execution device comprises a walking type pushing equipment assembly, a high-precision displacement sensor, a tilt angle sensor and a data acquisition unit. The walking type pushing equipment assembly and the high-performance hydraulic servo system are arranged on the pushing construction platform and are connected with the beam body through the self-adaptive pushing shoe; and the data acquisition unit is connected with each component in real time through an industrial Ethernet or a field bus, and uploads a signal to the central processing unit, so that the real-time deviation correction control in the beam body pushing process is realized. By arranging the walking type pushing equipment assembly, the self-adaptive pushing shoe and other components and through the matching relation between the walking type pushing equipment assembly and the self-adaptive pushing shoe, when the walking type pushing equipment assembly pushes the self-adaptive pushing shoe to move upwards, the self-adaptive pushing shoe automatically adapts to and is attached to the lower surface of the steel beam, the situation that the pushing shoe is uneven in stress due to local concave-convex is avoided, and the service life of the steel beam is prolonged. And the vertical elastic mechanism and the pressure sensor are matched with each other to detect the inclination of the two sides of the steel beam.

An architecture for transmitting data within an avionics system fitted to a vehicle, the architecture comprising a first field bus and a first avionics bus. According to the invention, the architecture comprises at least two primary channels each comprising: a primary field interface enabling communication between each primary channel via the first field bus, the field interfaces being interconnected with the first field bus; and a first avionics interface compatible with the first avionics bus. The architecture comprises at least one primary computer provided with a second avionics interface in communication via the first avionics bus with only one first avionics interface among the first avionics interfaces.

A gateway for a fieldbus system for connecting a controller to an industrial plant having a plurality of different components. The gateway includes at least one component interface via which the different components can be connected simultaneously or sequentially, a control interface to which a controller of the industrial plant can be connected, and a data processing module which, when at least one of the components is connected to the at least one component interface, is configured to identify the at least one component on the basis of a hardware address assigned thereto and to communicate with the at least one component via the component interface, and which, when the controller is connected to the control interface, is configured to communicate with the controller and to represent the at least one component with respect to the controller as a function-based representation. Furthermore, a fieldbus system is described.

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.

An ethernet switch includes a housing that has at least one communication input for data of a controller, at least one system input for a system voltage and at least one communication output. At least one voltage output to an electrical load is also provided. A power supply unit, which provides the voltage supply for the switch, is provided in the housing of the switch. The power supply unit also feeds the at least one voltage output to an external load. A field bus element, which is preferably configured to monitor and / or to control the voltage output to an external load, is integrated in the housing of the switch.

A system and method for updating firmware in a Building Management System (BMS) includes a BMS controller connected to field devices via a field bus and to a firmware (FW) management tool via a network. The BMS controller requests device information including current FW versions from the field devices and sends this information to the FW management tool. The FW management tool determines which devices have outdated firmware and sends updated versions to the BMS controller, which routes them to the appropriate field devices for installation. The system allows the FW management tool to disconnect after sending updates without disrupting installation. For devices with multiple firmware files, the FW management tool sends files sequentially, waiting for each download to complete before sending the next. The field devices can notify the BMS controller of successful installations, which can then notify the FW management tool.

The invention discloses a slave station data processing method and system of a process field bus based on an FPGA, a storage medium, electronic equipment and a computer program product. The slave station data processing method comprises the following steps: receiving slave station data with a preset rate from a slave station of a process field bus based on an FPGA module; acquiring slave station data in the FPGA module through the first processing module; determining the priority of the slave station data in the first processing module based on a preset rule; receiving the slave station data in the first processing module through a second processing module according to the priority of the slave station data and a preset high-speed bus; and acquiring and analyzing the slave station data in the second processing module through a preset analysis module.

This invention provides a control system and method for a rail flash welding machine based on a distributed fieldbus. The system includes a host module, a DC power supply module, a voltage regulator, and multiple fieldbus slave modules. The host module, the DC power supply module, and the voltage regulator are housed in a control system cabinet. The multiple fieldbus slave modules are distributed among the power supply unit, the chiller, the hydraulic station, the crane, the flash welding head, and the voltage regulator. Therefore, the host module and the multiple slave modules in this invention can select either a fieldbus or an Ethernet bus based on the characteristics of the transmitted signals to achieve collaborative communication between the host and slave modules, meeting the real-time requirements of the signals. Furthermore, the data transmission lines of this invention are simple, have strong anti-interference capabilities and stability, and improve the high-speed data acquisition requirements and the execution efficiency of the carrier.

The invention relates to a gateway (2) for a field bus system (100), wherein the gateway (2) comprises a first processor (6) with a first operating system (62), a second processor (7) with a second operating system (72) which is different from the first operating system (62) and has a virtual Ethernet interface (73), and an interprocess communication interface (9) which is designed to enable an Ethernet protocol-based interprocess communication between the first operating system (62) and the second operating system (72) using the virtual Ethernet interface (73).

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 cable diagnosis method and chip for an industrial field bus, and the method comprises the steps: generating a pseudorandom sequence at a transmitting end, converting the pseudorandom sequence into an analog signal, and injecting the analog signal into a to-be-detected cable; providing the pseudo-random sequence as a reference sequence to a receiving end; a receiving end collects echo signals on the cable, and samples and converts the echo signals into a sampling sequence; executing a peak detection process, including: estimating a channel impulse response through an iterative correlation estimation method based on the sampling sequence and the reference sequence, the channel impulse response including a discrete coefficient vector; detecting a peak value meeting a preset condition from the channel impulse response; and determining the fault type of the cable according to the symbol and amplitude of the detected peak value, and / or calculating the fault position on the cable according to the position of the peak value in the channel impulse response. The industrial field bus cable fault diagnosis method is suitable for diagnosis of industrial field bus cable faults in a complex electromagnetic measurement environment.

The utility model provides an active field bus distributor. The active field bus distributor comprises a trunk line interface protection module which comprises a trunk line interface protection input module and a trunk line interface protection output module; the output end of the trunk line interface protection input module is connected with the input end of the trunk line current detection module; the detection output end of the main line current detection module is connected with the detection input end of the main line short circuit detection control module; the power output end of the main line current detection module is connected with the power input end of the main line short circuit detection control module. The power output end of the trunk line short circuit detection control module is connected with the power input end of the trunk line interface protection output module. The active fieldbus distributor can quickly diagnose the short-circuit state of a main line and a branch line by using LED state indication, automatically isolates a fault section, and ensures the safe operation of a system due to the multiple protection functions of the distributor.

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.

The invention provides a fieldbus configuration method which is characterized by being applied to an upper computer and comprising the following steps: loading a template description file library, enabling each template description file in the template description file library to correspond to one type of equipment, and defining a plurality of attributes of the corresponding type of equipment; in response to a target category device selected when a user executes a device creation operation, creating a virtual slave station device according to a template description file corresponding to the target category device, and generating a configuration interface, the configuration interface comprising configuration items corresponding to multiple attributes of the target category device; and establishing communication connection with field real slave station equipment, obtaining each attribute actually supported by the real slave station equipment, and updating the configuration items corresponding to the plurality of attributes in the configuration interface according to the attributes. According to the method, equipment instance creation, configuration and parameter configuration can be completed without depending on a specific equipment description file, human-computer interaction is supported, and the interface and the configuration item can be dynamically adapted according to the actual function of the equipment.

The invention discloses a fire-fighting emergency lighting two-bus communication system and method based on differential coding, and relates to the technical field of field bus control, and the method comprises the steps: dynamically generating a compensation coefficient group based on actually measured distortion data in combination with a line attenuation coefficient obtained in an environment sensor; performing real-time compensation on each data bit by using the compensation coefficient group, adjusting the pulse width to be a compensation data bit pulse width value, and generating a compensated clean differential coded signal; detecting a signal amplitude based on the compensated clean differential coded signal, dynamically inserting a regeneration control character, and generating an instruction signal containing the regeneration control character; according to the instruction signal containing the regeneration control character, the signal regeneration operation is executed, the shaping amplification circuit is triggered by utilizing the regeneration control character, the amplitude of the attenuation signal is amplified, and the differential coding regeneration driving signal is generated. The differential compensation coefficient group is generated through double-edge detection and environmental parameter fusion, the dynamic correction of signal distortion is realized, and the time sequence recovery precision is improved.

The invention discloses a process scheduling system suitable for elevator taking of different service robots, and relates to the technical field of industrial control. According to the invention, through a protocol adaptation sub-module, an industrial control field bus adaptation logic is associated, a communication protocol of a multi-brand service robot and an elevator is unified, a standardized data system is constructed, efficient interaction of elevator taking task data of different types of robots is guaranteed, and the system compatibility is improved; based on an intelligent matching algorithm of a task allocation decision module and historical data fusion modeling, robot and elevator combinations are screened, task conflicts are dynamically adjusted, elevator running prediction is simulated through a dynamic model, an elevator taking path and a scheduling strategy are optimized, elevator congestion idling is reduced, the elevator resource utilization rate is increased, emergency tasks are guaranteed to be responded preferentially, and the service life of the elevator is prolonged. The complex logistics requirements of hospitals are met; the robot path planning gives consideration to obstacle avoidance and motion characteristics, the whole process of robot elevator taking is efficient and safe, a hospital is assisted to construct an intelligent logistics collaborative system, and the operation cost and instability are reduced.

The invention provides a field bus data receiving and decoding method, and relates to the technical field of data processing. The method comprises the following steps: receiving petrochemical field bus data in real time, and further determining a lead code, a start delimiter, an end delimiter and effective data in sequence; the Manchester decoding module is used for performing Manchester decoding on valid data, sending the decoded data to the UART interface of the single chip microcomputer, performing Manchester encoding on the data received by the UART, and outputting the data to the field bus MAU interface through the SPI interface of the single chip microcomputer. According to the invention, the current situation that the development of the communication interface of the field bus transmitter needs to depend on a special field bus communication controller chip is solved, and meanwhile, two field buses, namely a foundation field bus and a PROFIBUS PA, are compatible. A hardware interface is simplified based on the unvarnished transmission function of the UART, a complex memory bus interface is not needed, user type selection of a single-chip microcomputer is facilitated, the development difficulty of a field bus transmitter can be reduced, and the cost and product miniaturization are further reduced.

The application discloses a kind of multi-time scale micro-grid energy management method, using low-cost router-based networking scheme, simple and easy, without complex field bus can realize communication interaction, combine day-ahead and intra-day optimization, intra-day optimization according to the latest, higher accuracy prediction information is carried out to the day-ahead scheduling scheme Rolling correction, reduce the influence of the uncertainty factor of prediction information, improve the accuracy and reliability of micro-grid scheduling plan, reduce the operation cost of micro-grid.Introduction and main grid power interaction, reduce the fluctuation brought by new energy power generation, further improve the stability of micro-grid, while the real-time electricity price of main grid and the bidding of distributed power generation into grid electricity price make the cost of micro-grid further optimized, in order to avoid the single of optimization target, environmental management cost is included in objective function, realize the comprehensive consideration to environmental benefit and economic benefit.

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.

The invention relates to a numerical control system, a control method, numerical control equipment, a storage medium and a program product. The numerical control system comprises a user operation module which is used for outputting an operation instruction; the control module is used for outputting a shaft position instruction according to the operation instruction; the servo driving module is used for executing a motor action corresponding to the shaft position instruction; a data acquisition end of the encoder module is used for acquiring motor position information of the servo driving module so as to input the motor position information into the field bus; the user operation module, the control module, the servo driving module and the encoder module are sequentially connected through a field bus to form a loop. The dynamic performance consistency of all shafts of the numerical control system can be improved.

The invention belongs to the technical field of field buses, and particularly relates to a detector address online self-setting method based on a CAN bus and host equipment. When slave equipment in the CAN bus is offline, acquiring the addresses of the offline slave equipment, and forming an offline address pool by the addresses of all the offline slave equipment; when a replacement slave device used for replacing the offline slave device is online, selecting an offline slave device address from the offline address pool as a replacement address and sending the replacement address to the replacement slave device; and after the replacement slave device receives the replacement address, the replacement address is set as the address of the replacement slave device, and the address of the offline slave device is moved out of the offline address pool after successful setting. Therefore, the address of the replacement slave device is automatically changed into the allocated address in the CAN bus, and the address of the offline slave device is deleted whenever one address is successfully set, so that the uniqueness of all device addresses is ensured, and the address of the replacement device can be automatically set quickly and conveniently.

The invention relates to the technical field of tracking radars, in particular to a tracking radar servo system and a control method thereof.The tracking radar servo system comprises a radar signal processing system, a motor driver, a direct drive motor, an encoder and a radar antenna, and information exchange is conducted between the radar signal processing system and the motor driver through a field bus; the motor driver is connected with the direct driving motor and used for controlling the direct driving motor, the output end of the direct driving motor is connected with the fixed end of the radar antenna and used for driving the radar antenna to rotate, and an encoder is installed on the direct driving motor and used for detecting the position of the direct driving motor. The invention provides a tracking radar servo system and a control method thereof. According to the tracking radar servo system and the control method thereof, an instruction form of radar signal processing and a control structure of a motor driver of the servo system are properly changed to simplify functions of the radar servo system.

The invention provides a control device of a multifunctional agricultural machine. The control device comprises an autonomous control platform, a sensor assembly and an actuator assembly which are arranged on the agricultural machine. The autonomous control platform is connected with the sensor assembly and the actuator assembly through a broadband field bus, a real-time operating system, an autonomous mechanical logic behavior model and a crop identification model are deployed in the autonomous control platform, and the autonomous control platform is used for processing acquired data and controlling operation execution of the sensor assembly and the actuator assembly; the sensor assembly is used for sensing the surrounding environment of the agricultural machine and transmitting sensing data to the autonomous control platform. The actuator assembly is used for executing corresponding agricultural operation control according to a control instruction of the autonomous control platform; and the autonomous control platform is also used for acquiring real-time positioning data of the agricultural machinery and planning the advancing path of the agricultural machinery according to the real-time positioning data. According to the application, sowing, weeding, harvesting and the like can be realized, and the crop cultivation efficiency is greatly improved.

Fieldbus participant (22, 23) for a tool (16, 17), with a bus address for communication with a control device (3), with a bus node (27) configured for communication with the control device (3), and with a safety module (24), wherein the safety module (24) has a housing (31) in which a communication device (37) for receiving and sending data along a safety-related communication path is accommodated, wherein the housing (31) is provided on opposite side faces (33, 34) with connecting means (35, 36) configured for coupling with an internal communication system of the fieldbus participant (22, 23) comprising the safety-related communication path, wherein the communication device (37) is associated with an adjustment device (30) arranged in the housing,which is configured to establish a safety-related identification address and to feed this identification address into the safety-related communication path, wherein the communication device (37) includes a verification means configured for a functional check of the setting device (30) and which, after successful functional verification, enables the identification address to be forwarded via the communication device (37) in order to identify the bus node (27) with this identification address to the control device (3), wherein the identification address is used to recognize the tool (16, 17) in order to activate safety-related functions for the tool (16, 17) by the control device (3) and otherwise not to activate safety-related functions for the tool (16, 17).