1440 results about "Field bus" patented technology

The invention relates to device diagnostics in industrial processes comprising field devices employing a field bus. A remote diagnostics device (1) is placed in connection with a process device (2), separate from the field devices and the field bus. The remote diagnostics device comprises diagnostics electronics which collects diagnostics data relating to the process device, and a transmitter part for wireless (17) transmission of the diagnostics data to a near-by field device. The field device comprises a receiver part (41) for wireless (17) reception of the diagnostics data from said remote diagnostics device (1). A field device control unit (430) analyses the received diagnostics data and transmits a diagnostics report over a field bus interface (44) and the field bus to a diagnostics computer.

The invention discloses an intelligent industrial security cloud gateway equipment system and method. The industrial cloud security gateway equipment and method is characterized in that upper cloud data is encrypted and added with data classification identifiers and time stamps, and decryption, security scanning and multiple security authentication access control are carried out on data on downlink intelligent equipment, so that interconnection, protocol conversion, and multi-directional transparent and real-time transmission among cloud equipment, enterprise datacenter equipment and various intelligent equipment on an industrial field can be achieved. An intelligent industrial cloud security gateway is embedded intelligent equipment comprising various serial ports, communication interfaces for a field bus and field intelligent equipment such as the industrial Ethernet, communication interfaces for wireless mobile communication and wired Internet cloud equipment, wireless or wired local area network interfaces for Bluetooth, broadband and the like, an Ethernet switch, a GPS module, and embedded software. The intelligent industrial cloud security gateway can systematically prevent user data leakage and network virus attacks, is core equipment of a secure and reliable intelligent industrial cloud service system, and can serve intelligent industrial manufacturing.

An online monitor that can be permanently attached to a device to be monitored continuously monitors a set of analog signals and initiates data capture over a window of time when a user programmable set of conditions is satisfied. The online monitor includes a digital signal processing unit, a modular, interchangeable, analog signal conditioning base unit that can be tailored to the specific requirements of the process to be monitored and a modular, interchangeable, communication interface unit. The interface unit permits the digital signal processing unit to exchange data with external equipment such as network computers via a number of industry standard communication fieldbus protocols. The online monitor provides the capability to define the trigger condition under which data capture is initiated by comparing a user defined signal to a function of the instantaneous value of another signal or constant. Data captured is stored indefinitely in internally battery backed memory and the instant at which data capture is initiated is determined accurately via a time tagging function, so the data can be retrieved at a later time.

An interface module is operatively coupled to a Fieldbus process control network and a Modbus process control network to facilitate the exchange of process control information between the networks. The interface module stores a register map database in which the process control parameters of the function blocks in the field devices of the Fieldbus process control network are mapped to register numbers of the Modbus process control network. Once the Fieldbus process control parameters are mapped to the Modbus registers, the interface module is adapted to transmit request messages on the Fieldbus process control network to the Fieldbus field devices for the current values of the process control parameters, receive response messages from the Fieldbus field devices, and store the current values of the process control parameters in the register map database.

The invention relates to a multi-protocol gateway and protocol conversion method accessing industrial radio network into MODBUS/TCP industrial Ethernet and PROFIBUS-DP field bus based on IEEE802.15.4a. The multi-protocol gateway comprises microprocessor, MODBUS/TCP main station, IEEE802.15.4a radio main station, PROFIBUS-DP slave station, extent SDRAM memory and FLASH memory, RJ45 network port, 486 physical layer interface, USB interface. The circuit connection style is that the microprocessor is positioned at center; the DM9161EP Ethernet physical layer interface chip extends via MDIO interface; the PROFIBUS-DP protocol chip SPC3 connects via internal bus, the NA1TR8 radio protocol chip connects the circuit via SPI bus; the USB interface extends from the circuit. The protocol conversion method of multi-protocol gateway is controlled by microprocessor for implementing protocol conversion among three networks. The invention implements wired/wireless Heterogenous control network gateway fitting the demand for industrial real-time and open data communication considering the status of wired spot bus/ industrial Ethernet for the present and combining the wireless network frontier technology.

A method of diagnosing a temperature sensing system having a temperature sensor, a field processing module coupled to the temperature sensor, a bitbus, a fieldbus, and an auxiliary processing module communicating with the bitbus and the fieldbus. The method includes generating a temperature characteristic at the temperature sensor, processing the temperature characteristic at the field processing module, and generating field operating data including a temperature diagnostic parameter as a function of the temperature characteristic. The method also includes communicating the field operating data including the temperature diagnostic parameter over the bitbus from the field processing module to the auxiliary processing module, generating at the auxiliary processing module auxiliary field data as a function of the received field operating data, and communicating the auxiliary field data over the fieldbus.

The invention discloses a variable air volume air-conditioner control system with a variable frequency fan and a digital air valve for adjusting tail end air volume and an implementation method, belonging to the technical field of the control of a variable air volume air-conditioner system. The variable air volume air-conditioner control system structurally comprises a master station DDC (direct digital control) controller, a tail end temperature controller, a filed bus, a tail end variable air volume box (VAV-BOX) and an air valve driver, comprises mater station DDC control and tail end temperature controller control in control types, and adopts a strategy of collective processing at first and decentralized control later. Through a method for adjusting the tail end air volume by the variable frequency fan and the digital air valve, the variable air volume air-conditioner system eliminates throttle energy loss of the air valve without a device for measuring the air volume, has simple control type and no influence on the operation of the whole variable air volume system, and has the advantages of good system stability and obvious energy-saving effect; and the fault on the variable air volume tail end device of certain node has no influence on the normal operation of other variable air volume tail end devices.

The invention discloses an industrial control system based on a field bus and a control network, comprising a master station, a slave station and a network communication protocol, wherein a master processor subsystem on the master station and a master communication protocol stack exchange data by double-port SRAM, and the master communication protocol stack and a slave communication protocol stack periodically and automatically communicate; the slave communication protocol stack of the slave station receives a control command sent by the master station, simultaneously can receive input terminal state information sent from other slave stations and can periodically send the input terminal state of an I/O controller to the network; the network communication protocol is coded by Manchester; in each communication period, the master communication protocol stack on the master station automatically sends an initial frame and successively sends a data frame to each slave station according to a set address sequence, and each slave station sends a response frame according to the same address sequence. The invention can effectively lower the performance requirement on the master station processor, has low cost and strengthens stability while hardware cost overhead is low.

The invention provides, in some aspects, improved apparatus for configuring a control system. The apparatus includes a model made up of objects representing devices of such a system, including, at least one device that defines and/or controls communications on at least a portion of a network within that system. That device is referred to, here, as a “bus master” and the portion of the network is referred to as a “segment.” The object (or objects) representing the bus master can include information defining timings, port assignments and/or other aspects of the configuration of the segment. A download service transfers configuration information from objects in the model to devices in the control system. This includes transferring to the bus master communications configuration information for the segment. A download service according to this aspect of the invention generates—e.g., for logging by a change tracking system—indicia of the configuration information transferred to the bus master. The download service can likewise generate for logging (by the change tracking system) information transferred from the model to other devices in control system. The invention provides improved apparatus for configuring a control system that includes a model that is made up of one or more objects representing one or more devices in the system. The objects have parameters reflecting characteristics of the devices represented by the respective objects. At least one of those parameters is associated with a “track” attribute indicating whether at least selected configuration information transferred from that object to the respective device in the control system is to be logged to a change tracking system. A download service transfers configuration information from objects in the model to devices in the control system. Those downloads can go directly to the respective devices or can go indirectly, e.g., via other devices in the control system (such as controllers, field bus modules, and so forth). Regardless, the download service according to this aspect of the invention generates for logging by the change tracking system indicia of that transferred configuration information. Generation of those indicia is governed, at least in part, by the “track” attribute associated with one or more of the parameters with which the transferred information is associated.

This invention relates to a data transmission system for wireless communication of a control device with a field unit via a radio transmission device. The communication between control device and radio transmission device takes place via a field bus protocol. Likewise, the communication of the field unit with the radio transmission device takes place via a field bus protocol. The radio transmission device is capable of transmitting the field bus protocol by a radio protocol.

The invention provides a design and realization method of a redundant and fault-tolerant safety instrument control system based on a fieldbus and ARM (advanced RISC machines), comprising the following steps: by virtue of redundant and fault-tolerant configuration of a system power supply, input modules, a CPU (central processing unit) and output modules, four core processors communicate with respective and corresponding I/O (input/output) modules by a CAN (controller area network) bus so as to carry out field signal acquisition and control command output, and hardware 2oo4 redundant and fault-tolerant voting is carried out on the output signals of four channels on an output voting module, so that mis-stop of the system caused by single-channel hardware failure is avoided, the function safety level of the redundant and fault-tolerant safety instrument control system is ensured to reach SIL3 (safety integrity level 3), in-time and fast response and protection are carried out on dangerous states of protected field equipment, further a production device enters a predefined working condition of safe stopping, and the safety of staffs, equipment, production and the device is guaranteed.

The invention discloses a two-arm inspection robot control system based on a field bus, which relates to the robot manufacture technology and is an automatic control system of an inspection system, and used for operations on a high-voltage power transmission line. The two-arm inspection robot control system comprises a robot control host machine, a motion control unit, a sensor unit, a system state monitoring unit, a detection equipment control unit and a ground base station. The robot control host machine plans actions according to information collected by the sensor unit, the motion control unit controls each joint, monitors the running state of the whole control system and each detection equipment in real time and contacts with the ground base station through a wireless network, and each unit communicates with the robot control host machine in real time through the field bus. The two-arm inspection robot control system based on the field bus adopts a distributed hardware structure, is suitable for a series of operations of routing inspection, deicing and the like on the high-voltage power transmission line, and is beneficial to ensuring the safe and reliable operation of the national power system.

A circuit arrangement for the fault tolerant execution of digital computer programs includes a plurality of arithmetic logic units embodied as processor pool elements connected together so that they can each execute the program in parallel. The processor elements are connected to each other through respective data, clock and reset cross-strapping interconnect lines, and are each connected to one or more serial field buses. Each processor element includes at least one microprocessor controller for controlling the functions of the processor element in such a manner that any selected number of the processor elements can be automatically actuated at any time to simultaneously execute the program in parallel and thereby achieve a prescribed degree of redundancy in the circuit arrangement. The data cross-strapping line transmits data among the several processor elements, the clock signal cross-strapping line achieves a compelled synchronization of all of the processor elements, and the reset cross-strapping line carries out the deactivation of any processor element that is recognized as carrying out a faulty execution of the program or that is not necessary for achieving the required degree of redundancy. A deactivated processor element may later be reactivated to again participate in the parallel execution of the program.

Lockout and monitoring system with SIL3 safety rating and method for lockout and monitoring of conveyor or any distributed plant are provided where pulse width modulation and amplitude modulation are used for communication between field devices (such as remote isolation switches deployed at various locations of a conveyor belt) and a central controller, and for indication of the device location. A fail safe redundant switching system for control circuit with additional transmitter and receiver modules are provided in combination with the means for accurate indication of switch location to achieve SIL 3 rating. The ability to provide control (analogue and digital outputs) for a distributed plant, for example along the length of a conveyor, is advantageously achieved, particularly when the control outputs are line powered by means of a field bus system that provides both power and signaling on the same network.

The present invention describes a control system for controlling safety-critical processes. The control system has a first control unit for controlling a safety-critical process and at least one signal unit linked to the safety-critical process via I/O channels. It further comprises a field bus connecting said first control unit and said signal unit, and a bus master for controlling communication on said field bus. Said first control unit and said signal unit each comprise safety-directed arrangements for ensuring failsafe communication among each other. Said bus master is connected to said field bus separately from said first control unit and said signal unit.

A system for the control and monitoring of electronic sanitary appliances with a command level, an automation level and a field level. The automation level includes automation stations (1) which are each connected by a field bus (2) with several sanitary appliances (A, B, C, D, E). At least one radio station (4) is provided which communicates via a connected line with the appropriate automation station (1). The radio station (4) is in connection with at least one part (C, D) of the several sanitary appliances by means of a wireless data transmission path.

The invention relates to a stable tracking control system for a satellite communication antenna for a motion carrier, comprising an embedded antenna controller, an attitude sensor, a high-frequency signal processor, a GPS receiver, a directional integrated driving and controlling motor, a pitching integrated driving and controlling motor, a rolling integrated driving and controlling motor, a mechanical transmission device and a satellite communication antenna. An output shaft of the designed integrated driving and controlling motor can directly drive the antenna so as to simplify the system structure and facilitate the mounting and the maintenance; various main parts of the system and user operation terminals are connected by a field bus mode so as to simplify the connection complexity and benefit the networking work of a plurality of antenna systems; and a novel switching control algorithm based on a switching control theory is designed to improve the control performance of the system. The invention can effectively ensure the indication stability and the tracking performance of the satellite communication antenna on the motion carrier.

The invention discloses a method and a device for interconnecting a sensor network and a mobile terminal and network connection equipment. In the method, the sensor network gathers the acquired monitoring data of sensor network equipment to the network connection equipment through a field bus; the network connection equipment transmits the gathered monitoring data to a server via a carrier network; the server processes and analyzes the received monitoring data to obtain monitoring information of the sensor network equipment, which are corresponding to the monitoring data and stores the received monitoring data in a data base; the mobile terminal visits the server via the carrier network to obtain the monitoring information of the sensor network equipment and visits, controls or manages the sensor network equipment via the carrier network and the network connection equipment. The invention interconnects the sensor network and the mobile terminal by utilizing the network connection equipment, and thereby, the complexity of the sensor network equipment is reduced; a carrier network access device does not need to be configured for each equipment, thereby reducing the application cost.

The invention is DCPL field bus of network intelligent meter gauge end. The host connects with several field slave machines which are several network intelligent water meter end, gas meter end and home distribution end respectively. Connects several field slave machines and addressing remote digital correspondence function through a twisted pair line, and provides the field bus of direct current power. The network prepaying bridge sets CPU, data storing chip, analog switch, displaying circuit, light coupler and correspondence chip connected through MODEM chip, the CPU also connects with radiofrequency read/write model, the user forms outdoor card brushing information interactive. The host of bridge connects with DCPL field bus ports of slave machines; connects with RS485 or CAN bus portsof housing estate managing computer. The IC card is brushed without contact through bridge, and the data are transmitted to user network intelligent meter gauge end through DPCL.

Software in MPU builds united message model to realize protocol conversion in application layer among MODBUS/ TCP industrial Ethernet, DeviceNet field bus and Profibus DP field bus. Corresponding interface module and communication adapter modules at main nodes realize their relevant protocols. Through an internal bus, protocol conversion device built from a MPU is connected to industrial Ethernet interface module, DeviceNet communication adapter module at main node, Profibus DP communication adapter module at main node and a SRAM. Through a serial peripheral interface, MPU is connected to an electrically erasable memory. The invention solves converting protocols based on different standards. One communication frame is compatible to multiple industrial communication networks so as to meet requirements of network real-time at low-layered devices as well as high rate and large capacity of network on information layer.

The invention discloses a high-precision drive and control integration motor which comprises a power supply interface, wherein a load position detection sensor, a reducer, a motor, a motor rotor position detection sensor, and a debugging interface which is connected with a drive and a controller are integrated with a site bus interface, i.e. an output shaft connected with the load position detection sensor is directly connected with a load, two sides of the motor are respectively coaxially connected with the motor rotor position detection sensor and the reducer, the load position detection sensor and the load are coaxially arranged, and signals of the load position detection sensor and the motor rotor position sensor are led to the drive and the controller by shielding wires. The invention leads a system to have better impact and shock resistance property, is more suitable to the industry control environment; the load position detection sensor, the reducer, the motor, and the like are integrated; the backlash nonlinearity is effectively inhibited by a position controller, a speed controller and a current controller, and the system precision is improved.

The invention relates to a method for obtaining traffic status based on a sensor network and a device thereof. The method and the device adopt a transmission mode where a site bus is combined with a mass-data transmission network to form the sensor network for obtaining the traffic status. A sensor access node and a compound node have data processing capability. Such traffic status parameters, which reflect the traffic status at the section, as traffic flow, time occupancy factor, vehicle instantaneous speed, average speed at a section, and distribution feature of flow at the section over time, are obtained at the access node of the sensor network; fusion of logistic level is finished at the compound node to obtain such parameters reflecting zone traffic status as delay time, saturation flow rate, average queue length, average queue time at a road section, average driving time, average journey time, average driving speed, traffic coefficient, and average delay time at a small granule area; and fusion of business level is finished in a central computer to obtain such parameters reflecting large granule traffic status as average journey time at different routes, traffic coefficient at different routes and zone traffic jam degree.

The invention discloses a bullet train state monitoring system and a multifunctional hybrid gateway thereof. The multifunctional hybrid gateway comprises a field bus communication module, a wireless communication module, an Ethernet communication module, a main controller, a storage circuit and a real-time clock circuit, wherein the main controller is connected with the field bus communication module, the wireless communication module and the Ethernet communication module and used for performing protocol conversion and data processing on interactive data of the field bus communication module, the wireless communication module and the Ethernet communication module. The multifunctional hybrid gateway disclosed by the invention can realize the functions of protocol conversion, network transmission, data fusion and the like, and has the advantages of combining wired transmission with wireless transmission and real-time data transmission with high-capacity data transmission.

The invention relates to the new-energy distributed power generation operation control and aims at providing a wind-energy/ solar-energy/ storage/ ocean-current-energy new-energy isolated network stabilization operation integration control system and a method thereof. In the system, an energy storage apparatus and a new energy generator set are merged into an alternative current (ac) bus power grid through grid-connected convertors which are respectively configured in the energy storage apparatus and the new energy generator set. The each generator set and the energy storage apparatus are configured with monitoring apparatuses which is equipped with CAN interfaces and Ethernet network interfaces. The each monitoring apparatus is connected with the grid-connected convertor corresponding to the monitoring apparatus through a CAN bus. Simultaneously, information interaction can be realized through connection of the Ethernet and a central integration control unit. In the invention, a real-time Ethernet field bus technology is used to change new-energy isolated power generation into distributed concentrated scheduled orderly power generation. A stabilization control problem of clearance-type power supply can be partially solved. A computer network control technology, an intelligent scheduling control technology, a real time synchronization communication technology and a modern high-efficient grid-connected converting technology are combined. The system possesses flexible control, good stability, good redundancy and the like.

The invention relates to an automatic obstacle avoiding intelligent unit, system and method of a tele-operation plane redundancy mechanical arm of the field of mechanical control technology; wherein, the system comprises a data storage module, a microprocessor, a serial communication interface, a field bus interface and an intelligent unit; the intelligent unit which is arranged for each shaft motor collects the information of an infrared distance sensor arranged at an articulated arm; the states of the articulated arm are divided into three states of being normal, obstacle avoiding and stopping according to measured values of the sensing information; when the articulated arm is in the normal state, the intelligent unit adopts speed instructions planned by the microprocessor to control a driving unit ; when the articulated arm is in the obstacle avoiding state, the intelligent unit adopts the speed instructions which increase the distance between the articulated arm and obstacles to drive a control unit; when the articulated arm is in the stopping state, the intelligent unit stops the movement of an articulated motor and sends the states of the articulated arm to a movement coordination module. The intelligent unit, system and device can simplify the system wiring and fast sense the obstacles and realize the obstacle avoidance when controlling the end of the mechanical arm to get close to targets through the tele-operation.

The invention discloses an autonomous bulldozing robot. The bulldozing robot relies on devices of environment sensing, satellite positioning, machine vision, automatic control and the like, so that the functions of autonomous driving route planning, automatic bulldozing operation and autonomous on-line operation quality evaluation are realized, and the bulldozing robot is an unmanned and intelligent building construction machine. According to the task and the operation area, the autonomous bulldozing robot utilizes satellite positioning to measure the posture, and utilizes machine vision to sense and recognize the operation environment, the task sequence, the driving route and the posture of a scraper knife of the autonomous bulldozing robot are autonomously decided, and the working effectand the operation quality are evaluated according to the machine vision. A satellite positioning system adopts a satellite positioning and receiving unit to accurately sense the posture of the bulldozing robot in real time; a machine vision system adopts a fixed baseline camera to sense the environment surrounding the bulldozing robot and evaluate the quality of the bulldozing operation; and an automatic control system is composed of an upper computer and a lower controller on the basis of a field bus to form an onboard automatic control network. The autonomous bulldozing robot can also be operated by manual driving or remote control.