106 results about "Field bus" patented technology

The invention provides a prediction method and system for a rock stratum fracture disaster in tunnel engineering, and belongs to the field of tunnel engineering. Comprising the steps of multi-modal monitoring data acquisition and synchronization, data preprocessing and feature calculation, multi-modal information entropy evolution analysis, catastrophe point detection and precursor identification, risk assessment and early warning output and the like. Multiple types of sensors are arranged at key positions of a tunnel, an edge computing gateway is accessed through an industrial-grade field bus, and space-time reference unification of multi-source heterogeneous data is achieved; carrying out preprocessing and feature calculation on the collected original data; performing sliding window probability distribution modeling on each modal feature, calculating an information theory index, and analyzing non-linear relevance among the multi-modal features; judging whether a catastrophe precursor event exists or not by adopting multiple methods; and finally, based on a catastrophe point detection result, performing risk assessment on the tunnel region by using a multi-dimensional risk quantification model, and performing early warning output on high-risk and emergency states.

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.

1. Name of the Design Product: Bus Valve Island. 2. Use of the Design Product: It is used for installing communication modules. For example, it optimizes wiring with a circuit board through push-in type terminals and simultaneously accesses fieldbus communication modules to facilitate control of solenoid valves with respective wiring methods. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective View 1.

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.

The invention provides a multifunctional interphone, and relates to the technical field of interphones, the multifunctional interphone comprises a control cabinet interphone, a car roof interphone and a pit interphone which are respectively arranged in an elevator machine room, a car roof and a pit, and signal interaction is realized through a functional safety field bus or RS485 / CAN (Controller Area Network); car roof / pit signals are integrated, and a safety circuit state is output; the car top interphone collects a car top switch signal and forwards elevator control information to the car equipment; the pit interphone collects a pit switch signal and supports the uploading of a lighting switch state, a dual-channel collection and function safety field bus technology is adopted for a safety signal, and reliable transmission of the signal is ensured through SI L3 authentication; non-safe signals are transmitted through a single channel, so that the cost is reduced; the control cabinet interphone realizes a complete safety loop and a UCMP function through PASSREAL technical software, and supports parameter configuration of each switch logic; the car roof interphone transmits an elevator control instruction in a transparent mode, and a car roof control panel and a communication cable are omitted.

The utility model discloses a fully-shielded non-grounded process field bus cable, which comprises two oxygen-free copper single wires and two fan-shaped PFA (Polyfluoroalkoxy) resin filling core frames which are arranged in a cross shape to form a cable core, and each oxygen-free copper single wire comprises an oxygen-free copper conductor and a skin-foam-skin insulating layer. An irradiation crosslinking linear low density polyethylene inner sheath layer, a copper wire weaving inner shielding layer, a copper plastic composite wrapping shielding layer and an irradiation crosslinking linear low density polyethylene outer sheath layer are sequentially wrapped outside the cable core, and a tearing rope is arranged between the irradiation crosslinking linear low density polyethylene inner sheath layer and the copper wire weaving inner shielding layer. The outer surface of the irradiation crosslinking linear low density polyethylene outer sheath layer is provided with axial wire stripping grooves which are matched with the tearing ropes along the axial direction, and reinforcing filling strips are embedded in the axial wire stripping grooves. The cable core structure is more balanced and stable, the double-layer shielding structure ensures stable shielding characteristics, grounding processing is not needed, the difficulty of manual wire stripping operation is reduced, and the durability is better.

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.

Method for operating an electric drive system, in which a synchronization signal (Sync) with a cycle time (Δtmaster) of a master of a higher-level fieldbus (1) or an integer multiple of the cycle time (Δtmaster) of the master (3a) of the higher-level fieldbus (1) is cyclically sent from the master (3a) to slaves (3b, 3c).

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 device for detecting PROFIBUS-DP communication faults and a detection method thereof, which are applied to communication detection of a hot rolling and continuous annealing unit and are used for greatly reducing shutdown caused by the communication faults. The device comprises a programming DP communication head and a DP line needing to be detected, the programming DP communication head and the DP line needing to be detected are each provided with a terminal resistance switch and four terminals, the four terminals are A1B1 and A2B2, the DP line needing to be detected comprises a first connecting CB port, and the programming DP communication head comprises a connector used for being connected with other field buses, a second connecting CB port and an A / B short-circuit cable; and the connection CB port I in the DP line to be detected is connected with the connector in the programming DP communication head. The invention further provides a detection method convenient to operate. The device is reasonable in design, convenient to detect, safe, reliable and capable of accurately positioning a fault point, the equipment fault (F082) is greatly reduced, the product quality is improved, and the use requirement is met.

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 utility model relates to the technical field of field bus control, in particular to a host data acquisition circuit, which comprises a front-end protection circuit, a communication circuit, an isolation optocoupler circuit and a sampling circuit which are sequentially connected, the sampling circuit is connected with a square wave oscillation circuit and a single chip microcomputer chip, the square wave oscillation circuit is used for generating square wave signals, and the single chip microcomputer chip is connected with the communication circuit. Host signals are sent to the sampling circuit in cooperation with the front-end protection circuit, the communication circuit and the isolation optocoupler circuit and finally provided to the single-chip microcomputer to obtain needed data signals, and the whole circuit is simple in structure and low in use cost.

A method for transmitting data to a control device (e.g., a controller, an automation device), particularly for building automation, wherein the control device is connected to a tool (e.g., an engineering tool; a PC) via a communication network. A wireless service interface (e.g., a WiFi interface) of the control device is activated via a signal generated by the tool and sent to the control device to transmit (send and receive) data. The communication network can be, for example, a fieldbus (e.g., a KNX bus) or a backbone network (particularly a non-IP network).

The present invention discloses an adaptive modular topology system and expansion method for an air-conditioning gateway, wherein the topology system includes a host and multiple expansion modules, the host includes a CPU and a bus controller, the expansion modules are plug-in connected to the host, the multiple expansion modules are powered in a cascade manner, and the host and the multiple expansion modules communicate via a bus, and the bus controller is used to receive data from the bus and send data to the bus; this solution provides a modular interface expandable topology form for the air-conditioning expansion centralized control scenario, and creatively designs a sequence identification method for the air-conditioning gateway expansion module, which has the technical advantage of low cost compared to the existing industrial field bus, and since a dedicated communication chip is omitted and a module sequence identification method based on power-on detection and a MODBUS bus are adopted, it greatly saves costs and is more suitable for application in the air-conditioning gateway.

The application provides a bus conversion system of a safe real-time bus (SRB), and belongs to the technical field of field buses.The system comprises a control module, a protocol processing module, a PHY module, various bus interfaces and various data transceiving modules; when receiving bus data sent by the data transceiving module, the control module performs protocol conversion on the bus data, and sends the converted bus data to the protocol processing module; when receiving bus data sent by the protocol processing module, the control module determines a target bus system, performs protocol conversion on the bus data according to the target bus system, and sends the converted bus data to the corresponding data transceiving module; the protocol processing module performs abnormality detection on the bus data by using the SRB bus protocol, and performs data transmission on the detected bus data. By using the system provided by the application, data interaction between the SRB system and different bus systems can be realized, the equipment cost of bus interconnection can be reduced, and the convenience of system maintenance can be improved.

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.