CN100514233C - EPA on-site controller based on SOPC - Google Patents

EPA on-site controller based on SOPC Download PDF

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Publication number
CN100514233C
CN100514233C CNB2007100928034A CN200710092803A CN100514233C CN 100514233 C CN100514233 C CN 100514233C CN B2007100928034 A CNB2007100928034 A CN B2007100928034A CN 200710092803 A CN200710092803 A CN 200710092803A CN 100514233 C CN100514233 C CN 100514233C
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epa
module
interface
protocol stack
communication
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CN101135889A (en
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向敏
王平
付蔚
吴鸿岑
周涛
郑鸣
刘哲
杨夏
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Chongqing University of Post and Telecommunications
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Chongqing University of Post and Telecommunications
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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Abstract

The invention can be used for realizing a real-time operational system and EPA communication stack on a programmable CPU. The design of main processor uses an EPA communication protocol stack module to complete the resolving for the EPA message; and comprises timer, communication interface, Ethernet controller interface and each kind of computing instruction subscribed according to the actual needs. The assistant interface module comprises an Ethernet interface module and a wireless accessing module, both are respectively used to complete the receiving and transmitting the Ethernet data and the conversion of wirelessly-transmitted data.

Description

A kind of EPA field controller based on SOPC
Technical field
The present invention relates to the communication technology, computer technology and automatic control technology, be specifically related to a kind of industrial network field controller.
Background technology
Growing demand makes Ethernet be applied at industrial control field in advantages such as the opening of ethernet technology, interconnectivity and the network bandwidth and the automatic field.Along with the develop rapidly of ethernet technology, Industrial Ethernet EPA becomes the communication mode of the two-forty of main flow in the automation control system gradually, and the Industrial Ethernet technology has become the branch of an independent development.EPA be applicable between industrial automation control system device and instrument and meter, the industrial control network communication standard of the mutual data communication of industrial automation instrument.
At present, a large amount of EPA field apparatuss all is to communicate by installing the EPA communication card additional, the most ARM nuclears that adopt of the processor of this communication card.Adopt the hardware development platform and the incomplete applicable cases of ARM core processor, because chip design company and the incomplete needs of being familiar with Industrial Ethernet at Industrial Ethernet.Therefore hardware resource waste or the not enough problem of resource often appear in the middle of practical application, and development system often needs external PLD (Programmble Logic Device programmable logic device (PLD)) chip to carry out the logic control of peripheral components, has the bottleneck problem of interface rate.And adopt SOPC (programmable system on chip) technology can solve this difficult problem.
In recent years, along with the develop rapidly of semiconductor technology, traditional chip design method is carrying out a revolution, and its sign is exactly that system level chip (SOC) is accepted extensively by industry, and becomes the focus of research and development.What arise at the historic moment along with the SOC technology is the SOPC technology.It combines the advantage of SOC and FPGA (field programmable gate array), is SOC (system on a chip) (SOC, System on a Chip), is promptly finished the main logic function of total system by entire chip; Be again programmable system, have the design flexible mode, can reduce, extendible, scalable, and possess software and hardware programmable function in system.The huge attractive force of SOPC comes from can provide more performance and lower power consumption, effective total cost of saving circuit board space and reducing product, therefore electronics industry shifts to the SOPC design, makes SOPC become one of optimal selection of contemporary electronic systems.
Summary of the invention
The present invention is directed to communication card processor adopting ARM nuclear in existing Industrial Ethernet EPA (the Ethernet for Plant Automation) field controller, existence can not reasonable distribution hardware, software resource, there is the above-mentioned defective of bottleneck in interface rate, fully studying on the basis of EPA network service and SOPC technology, designed a kind of EPA controller, on the CPU processor that can edit soft nuclear, realized real time operating system and EPA communication protocol stack based on programmable system on chip SOPC technology.This controller is applied in the EPA industry spot control, and the state of other equipment in the EPA system is detected, controls, shows in real time and reports to the police.
The present invention solves the problems of the technologies described above the technical scheme that is adopted, and adopts SOPC technology, field bus technique and automatic control technology, designs a kind of embedded multitask communication controler that is applicable to the EPA Industrial Ethernet, adopts the real time operating system exploitation.This controller is responsible for processing, control computing and output in real time to field data as the unit of connection management net, control net and field apparatus in the control system.The CPU module NIOSII that employing can be edited soft nuclear realizes real time operating system and EPA communication protocol stack functions of modules, the EPA communication protocol stack is carried out cutting to be constituted EPA communication protocol stack module and finishes parsing to the EPA message, the realization of customization global function timer is synchronous with major clock, custom communication interfaces, customization ethernet controller interface, realize the packet sending and receiving of EPA protocol stack Physical layer and link layer, and the actual demand of EPA controller is customized various operational orders at industry spot, between NIOSII and Peripheral Interface, adopt the Avalon bus to connect.This controller comprises main processing block, auxiliary processing module, display module.Wherein, main processing block is responsible for finishing functions such as the storage of data and analyzing and processing as the core of controller, comprises EPA communication protocol stack module, monitoring module, alarm module; Auxiliary processing module is finished the transmitting-receiving of Ethernet data and the protocol conversion of wireless data as the communication interface of controller, and it comprises ethernet interface module, radio access module; Display module is responsible for the data after handling through main processing block are shown by LCDs as the human-computer interaction interface of controller, and can be imported relevant steering order by keyboard.
EPA communication protocol stack module realizes EPA management and running entity, EPA management information bank, EPA socket mapping entity, EPA system management entity, EPA application access entity.Finish parsing by EPA communication protocol stack module controller to the EPA message.Monitoring module is finished the isoparametric setting of physical quantity and the demonstration of communications parameter, field apparatus controlled variable and collection in worksite, and the situation of reaching the standard grade that can facilities for observation and the relevant information situation of corresponding device are analyzed equipment.Alarm module, when the important parameter of EPA field apparatus reached the alarm threshold value, controller sent alarm sound, and ejected panalarm and dependent failure information on LCDs.Ethernet interface module in the auxiliary processing module, for the controller access network based on ethernet provides interface, main Data Receiving and the transmission work of being responsible for handling ethernet physical layer and MAC layer.Radio interface module, on this controller, reserved the communication interface of bluetooth module and ZigBee (Physical layer is based on a short distance territory Netcom letter agreement of IEEE802.15.4 agreement) module, as auxiliary processing module, can be according to the actual conditions of industry spot, the access to wireless communication module realizes the communication function with the EPA wireless device.Show load module, designed LCD interface and determinant keyboard interface in this controller, have the function of good man-machine interaction.The UART Universal Asynchronous Receiver Transmitter of this controller configuration can connect Ethernet, ZigBee and Bluetooth communication protocol interface respectively.
Increase along with the monitoring intensity of industry spot, the numerical information and the analog information that need to gather get more and more, the present invention is based on programmable system on chip SOPC technical design EPA controller, can reasonable distribution hardware, software resource, in the process that controller access EPA network is monitored the network equipment, improve network interface speed.A tie between the transmission information be can between primary processor and each information source, set up by this communication controler, and remote monitoring and automatic control function realized.
Description of drawings
Fig. 1 EPA field controller system architecture diagram
Fig. 2 EPA field controller can be edited soft core module structural drawing
Fig. 3 EPA field controller main processing block structured flowchart
Each module relation diagram of Fig. 4 EPA protocol stack application layer
Fig. 5 EPA protocol stack receives the message processing flow chart
Embodiment
The EPA field controller based on SOPC of the present invention's design adopts SOPC technology, field bus technique and automatic control technology, the CPU module adopts the soft nuclear of NIOS II as processor, global function timer, customization asynchronous serial communication interface, ethernet controller interface have been customized, at the actual demand of industry spot to the EPA controller, customize various operational orders, hardware optimization is taked in the instruction of operation efficiency sensitivity.Adopt the embedded multitask communication controler of real time operating system exploitation, on NIOS II processor, realize real time operating system and EPA communication protocol stack function, between NIOS II and Peripheral Interface, adopted Avalon bus (bus that is used for NIOS flush bonding processor parametrization interface of altera corp's exploitation) to connect.This controller except finishing essential communication task, also is responsible for processing, control computing and output in real time to field data as the unit of connection management net, control net and field apparatus in the control system, is applicable to the field control of EPA Industrial Ethernet.
Embodiments of the present invention is described specifically with specific embodiment with reference to the accompanying drawings.
Be illustrated in figure 1 as EPA field controller system architecture diagram.
The EPA field controller comprises main processing block, auxiliary processing module and display module.Primary processor in controller is by soft the examining now of NIOS II (the CPU nuclears of the second generation 51 series of altera corp), in the soft nuclear of NIOS II, EPA communication protocol and telecommunication protocol have been moved, Ethernet is finished this two agreements as transmission medium, auxiliary processing module is set finishes the packet sending and receiving work of Physical layer and MAC layer automatically, comprise Ethernet interface chip and wireless interface chip in the auxiliary processing module, can embed ZigBee chip and Bluetooth chip as Ethernet interface chip and wireless interface chip, these chips can independently be finished the parsing of its corresponding agreement and encapsulation work and need not the control of primary processor, the pressure that this has alleviated primary processor has to a certain extent improved the processing power of controller.The display process module provides good man computer interface for operating personnel, operation has relative foreground and background process in primary processor, monitoring module and alarm module all will operate in the primary processor, but it shows and the importation needs outside liquid crystal display and keyboard input to finish.
Below introduce function and the implementation that each module is finished respectively in detail.
Figure 2 shows that and to edit soft core module structural drawing in the EPA field controller.
Can edit the primary processor of soft nuclear as this controller, its exploitation and design proposal are different from the general-purpose chip development plan, and overall process adopts the SOPC technology to realize, and all functions in the main processing block all will realize in this soft nuclear.Customize timer in this module, make itself and major clock synchronous, the custom communication interfaces controller is realized the transmitting-receiving of message, customizes too net controller interface, realizes the packet sending and receiving of EPA protocol stack Physical layer and link layer.
Can in the QuatusII development platform that ALTERA company provides, carry out the system design of FPGA inside, in SOPC Builder, be processor controls add-on system clock, add a global function timer, for the NIOSII processor provide one must be synchronous with the major clock in the EPA network local zone time; Design three universal asynchronous serial interface controller UART, wherein two UART are connected with wave point in the supplementary module, realize the transmitting-receiving of wireless message, and another one UART realizes being connected with host computer, realization ipc monitor function; Customization ethernet controller interface connects the network interface control chip in the supplementary module, finish the packet sending and receiving function of EPA protocol stack Physical layer and link layer, general purpose I/O (input and output) interface is connected with external LCD, keyboard, hummer, finish and show and warning function, add external RAM interface and outside FLASH interface in addition, EPA protocol stack and other software program are stored in after compiling is finished among the outside FLASH (flash memory), after FPGA powered on, EPA protocol stack sofeware supervisor will be by moving among the RAM that videos among the FLASH.After above-mentioned interface is finished in the customization interpolation, by base address and the interruption that system tool distributes these interfaces automatically, last generation system module.In the process that generates, SOPC Builder is created as a symbol (Symbol) with NIOS II system module, and this symbol is added in the BDF document, and it is interconnected with logic to connect up.After finishing these steps, the project files that system is all compile.After successfully compiling, Quartus II compiler generates one or more programming files, can or dispose a device with these file programmings, after these configuration files are downloaded to EPCS (EEPROM (Electrically Erasable Programmable Read Only Memo)) or FLASH (flash memory), will be at circuit that comprises soft nuclear of NIOS II and relevant Peripheral Interface of building by logic gates of the inner generation of FPGA.
Be illustrated in figure 3 as EPA communication protocol stack structural model structured flowchart in the EPA field controller main processing block, communication protocol stack designs with reference to " the EPA system architecture and the communication specification that are used for commercial measurement and control system ", the EPA communication protocol stack is carried out cutting constitute EPA communication protocol stack module and finish parsing, and in the soft nuclear of NIOS II, realize the EPA message.
EPA field controller main processing block carries out system design based on SOPC, can be divided into 3 layers, and the bottom constitutes the hardware platform of total system, and the operation platform and the communication interface of software is provided; The 2nd layer is operating system UC/OS II, provides task scheduling and interface to drive, and realizes system's communication request to external world, the realization of real-time response the superiors algorithm by hardware interrupts; The 3rd layer is application layer, is responsible for loading EPA communication protocol stack and the operation background program relevant with monitoring and alarm module.In order to save the resource in the embedded system, in this controller, the EPA communication protocol stack is carried out cutting, adopted EPA communication scheduling entity and IP agreement (Internet protocol), ARP agreement (address resolution protocol), ICMP agreement (Internet internet Internet Control Message Protocol) and udp protocol (User Datagram Protoco (UDP)), application layer has realized EPA socket mapping entity, EPA system management entity, EPA application access entity, EPA management information bank, EPA client layer.
At accompanying drawing the related entities in the EPA protocol stack is elaborated below.
(A.1) EPA communication protocol stack module
Be illustrated in figure 4 as each module relationship synoptic diagram of EPA protocol stack application layer, the communication scheduling management entity in the EPA protocol stack is the management and running that are used for EPA equipment is sent message on network, and it does not dock the receiving literary composition and manages.EPA communication scheduling management entity adopts the timesharing transmit mechanism, by the scheduling scheme of configuration in advance, the cycle message that EPA equipment is sent on network with non-periodic the message transmitting time control, collide avoiding.The grand cycle of the scheduling of EPA be divided into two stages wherein first stage be the message transmissions stage in cycle, second stage is message transmissions stage non-periodic.In the message transmissions stage in cycle, the message that each EPA equipment sends on network is the message that comprises cycle data.Cycle data is meant the data relevant with process, presses measured value, the controlling value of the control cycle transmission of control loop as needs, or needs by the cycle data updated between the functional block input, output.The transmission priority of cycle message is made as the highest.
In message transmissions stage non-periodic, the message that each EPA equipment sends on network is the message that comprises data non-periodic.Data were meant and are used for the data that mode is transmitted with non-periodic between two communication parters non-periodic, as data such as the last data download of program, variable read-write data, event notice, trend reports.Non-periodic, message sent by its priority height, IP address size and time effective means.The realization of this scheduling entity relates to the IEEE1588 clock synchronization algorithm, at first needs local zone time is proofreaied and correct before starting scheduling, makes the controller time consistent with the major clock time on the EPA network.In case configurable controller success then starts scheduling mechanism, set up three formations and store EPA cycle message respectively, EPA message non-periodic and non-periodic assert packet.Data message in the cycle formation transmits in the stage in the cycle message transmissions, the data message of formation non-periodic transmitted in the transmit stage in non-periodic, and message statement formation non-periodic be in order to judge this controller non-periodic message in the transmitting time of transmit stage non-periodic.
The resolving of EPA protocol stack to message is described in detail in detail below, is illustrated in figure 5 as the EPA protocol stack and receives the message processing flow chart.After the EPA field controller inserts on-the-spot Ethernet, peripheral interfaces such as NIOS II processor initialization UC/OS II operating system, network interface, storehouse and timer, and from external memory storage FLASH, obtain the network informations such as IP address and MAC Address, send the mac address information that obtains to the network interface card control chip, multicast address is set; After network interface card drives the initialization success, the network interface of controller will receive only MAC Address and multicast address is the network message of this machine address, when the message that meets above-mentioned condition arrives, produce to receive and interrupt, and the message that the receives send buffer from network interface card is copied in the send buffer of NIOS II.Judge the network layer protocol type according to the message field (MFLD) that receives then: if the value of this field is 0x0806, then this ethernet frame is ARP (AddressResolution Protocol) packet; If the value of this field is 0x8035, then this ethernet frame is Reverse Address Resolution Protocol RARP (Reverse Address Resolution Protocol) packet; If the value of this field is 0x8888 or 0x8889, then this ethernet frame is IEEE1588 (time synchronization protocol) packet; If the value of this field is 0x0800, then this ethernet frame is Internet protocol IP (InternetProtocol) packet; If the value of this field is other values, then abandon this message.
For the IP packet, then further read the protocol fields in its IP stem, if the value of this field is 1, then this IP packet is Internet Control Message Protocol ICMP (Internet Control MessagesProtocol) packet; If the value of this field is 2, then this IP packet is the Internet Group Management Protocol IGMP (Internet Group Management Protocol) packet; If the value of this field is 6, then this IP packet is transmission control protocol TCP (Transfer Control Protocol) packet; If the value of this field is 17, then this IP packet is User Datagram Protoco (UDP) UDP (User DatagramProtocol) packet; If the value of this field is other values, be Others then with this IP data packet recording.
For the UDP message bag, further read the destination interface field value in its UDP stem, if the value of this field is 0x88bc, judges that then this UDP message bag is the EPA message, otherwise abandon this packet.
For the EPA message, which kind of service EPA network condition statistical module is determined to belong to according to the value of the type of service field in its EPA stem, and is transferred to the EPA application layer process according to " EPA standard ".
(A.2) network monitoring module has comprised device analysis module and on-site parameters display module, and this module is obtained the relevant information of equipment by the device asserts service.EPA device asserts service (EM_DeviceAnnunciation) belongs to the EPA system management entity, the existence and the state that are used for declares device on the EPA network, each online equipment all can be regular transmitting apparatus on network statement service message, EPA network equipment analysis module captures the device asserts service message of online equipment, then according to " EPA standard " regulation to the device asserts service message, the device identification Device ID of visual string representation will be used in this message, PD Tag, whether this equipment is read out by information such as configurations, and analysis result is passed to the graphical interfaces process by message queue.Because each equipment is periodic broadcasting equipment assert packet on network all, so this module also will periodically be upgraded the display result on the touch-screen.The network monitoring module also comprises the on-site parameters display module, this module has been utilized the EPA information distribution services, this service message belongs to the cycle message, each equipment sent out the on-the-spot physical quantity that this equipment collects every certain cycle by information distribution services, the EPA controller is resolved this message and shown after receiving this message.
(A.3) alarm module, alarm module is realized by the service of EPA incident management: this module functions is to send one, a plurality of or all devices of important event information to other from an EPA equipment.The condition that incident takes place is defined by the user, and when condition satisfied, application call event notice service (EventNotification) came reporting event.And also be to realize by the user to the affirmation of incident.The user comes the data (Event Data) of transmission events sequence number (Event Number) and incident by the event notice service, as measured value, state, unit.
(B.1) ethernet interface module
This controller realizes that the control chip of ethernet communication can use the adaptive net card chip of the LAN91C111 of 10M/100M, and LAN91C111 is connected the Ethernet interface of the soft nuclear of NIOS II, and inserts the EPA network by the RJ45 network interface.Integrated MAC (Media layer) and the PHY (Physical layer) that follows the SMSC/CD agreement meets the IEEE802.3/802.U-100Base-Tx/10Base-T standard on the chip of LAN91C111.The Physical layer of protocol stack, link layer part is simultaneously integrated ethernet medium access controller (MAC) and physical layer transceiver (PHY) supported the 10/100M full-duplex transmission mode, consulted and function such as Flow Control automatically.Used the asynchronous bus interface pattern, and with FLASH shared address line and data line, be connected to the Avalon bus on chip by the adaptation module on the FPGA.
(B.2) radio interface module
In this controller,, 3 UART modules are set according to present industry spot field device interface type commonly used.Realized comprising Ethernet interface and ZigBee and Bluetooth communication protocol interface, the communication module that two serial ports of back two kinds of interfaces by FPGA connect ZigBee and Bluetooth communication protocol is respectively realized.
Utilize the universal asynchronous receiver nuclear (UART nuclear) of the Avalon interface that has in the soft nuclear of NIOS II, for the communication mode of serial character stream is provided between embedded system on the FPGA and the peripheral hardware, can change the data bit of its baud rate, parity check bit, position of rest, transmission and other optional RTS-CTS flow control signals etc., it has realized the RS-232 agreement, can connect RS-232 interface.
The data of coming out from ZigBee module and bluetooth module enter processor through serial ports, and are stored in cyclic buffer.In EPA socket entity, be respectively ZigBee and blue tooth interface and create reception and transmission process.When cyclic buffer has data to arrive, start corresponding receiving process, these data are sent to the EPA protocol stack, its processing mode is the same with the processing mode of EPA cable network.The message that receives from wave point mainly contains two kinds, and a kind of is EPA device asserts message, can judge that by this message body which equipment reaches the standard grade, and whether configuration success of equipment; Another kind is an EPA distribution of information message, can obtain the field data that wireless senser collects by EPA distribution of information message.
C. demonstration/load module
The monitoring display INTERFACE DESIGN of controller three grades of display menus, entree sets up and monitors and control two menu options, establish ZigBee, bluetooth and three menu options of Ethernet in supervision and the control interface, divide into the menu option of having put corresponding concrete equipment in above three sub-menu option.Equipment by the button selection need monitor at concrete controlled target, can be provided with control corresponding option and controlled variable by keyboard.
More than just the preferred embodiments of the present invention explanation, protection scope of the present invention limits in conjunction with claim based on those skilled in the art's understanding.

Claims (7)

1, a kind of EPA field controller based on SOPC, comprise: main processing block, auxiliary processing module and display module, auxiliary processing module comprises ethernet interface module, radio access module, and this auxiliary processing module is finished the transmitting-receiving of Ethernet data and the protocol conversion of wireless data; It is characterized in that, the main processing block employing can be edited soft nuclear and realize real time operating system and EPA communication protocol stack functions of modules on NIOS II processor, the EPA communication protocol stack is carried out cutting to be constituted EPA communication protocol stack module and finishes parsing to the EPA message, the realization of customization global function timer is synchronous with major clock, custom communication interfaces, customization ethernet controller interface, realize the packet sending and receiving of EPA protocol stack Physical layer and link layer, and the actual demand of EPA controller is customized various operational orders at industry spot, between NIOS II and Peripheral Interface, adopt the Avalon bus to connect.
2, EPA field controller according to claim 1 is characterized in that, also adds external RAM interface and outside FLASH interface outside main processing block, and EPA communication protocol stack software is stored among the outside FLASH.
3, EPA field controller according to claim 1 is characterized in that, three UART Universal Asynchronous Receiver Transmitter of described communication interface customization connect Ethernet, ZigBee and Bluetooth communication protocol interface respectively.
4, EPA field controller according to claim 1 is characterized in that, main processing block carries out system design based on SOPC, is divided into three layers, and the hardware platform of bottom construction system provides running software platform and communication interface; The second layer is an operating system layer, provides task scheduling and interface to drive; The 3rd layer is application layer, is responsible for loading EPA communication protocol stack and the operation background program relevant with monitoring and alarm module.
5, EPA field controller according to claim 1, it is characterized in that, EPA communication protocol stack module has adopted EPA communication scheduling entity and IP agreement, ARP agreement, ICMP agreement and udp protocol, and application layer realizes EPA socket mapping entity, EPA system management entity, EPA application access entity, EPA management information bank.
6, EPA field controller according to claim 1 is characterized in that, which kind of service is EPA communication protocol stack module determine to belong to according to the value of the type of service field in the EPA heading that receives.
7, EPA field controller according to claim 5, it is characterized in that, EPA communication scheduling management entity adopts the timesharing transmit mechanism, by the scheduling scheme of configuration in advance, the cycle message that EPA equipment is sent on network and non-periodic the message transmitting time control.
CNB2007100928034A 2007-09-30 2007-09-30 EPA on-site controller based on SOPC Expired - Fee Related CN100514233C (en)

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* Cited by examiner, † Cited by third party
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CN110798480B (en) * 2019-11-07 2022-02-01 杭州和利时自动化有限公司 Data communication method and system between safety instrument systems
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101859138A (en) * 2010-06-04 2010-10-13 中环天仪股份有限公司 EPA bus and LonWorks bus conversion adapter

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