CN105306352A - Industrial field bus protocol gateway device - Google Patents
Industrial field bus protocol gateway device Download PDFInfo
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- CN105306352A CN105306352A CN201410246276.8A CN201410246276A CN105306352A CN 105306352 A CN105306352 A CN 105306352A CN 201410246276 A CN201410246276 A CN 201410246276A CN 105306352 A CN105306352 A CN 105306352A
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses an industrial field bus protocol gateway device. The device comprises MCU control modules, IO interface modules, a man-machine interface module, a backplane and power supply modules; the IO interface modules and the MCU control modules are connected through a system bus; the MCU control modules and the man-machine interface module are connected through a bus; the power supply modules are used for performing redundant power supply on the MCU control modules, the man-machine interface module and the IO interface modules through the backplane; and meanwhile, the whole industrial field bus protocol gateway device is connected through Ethernet. The industrial field bus protocol gateway device adopts a flexible and effective redundancy technology and has diversified module assembling manners, so that interconnection and intercommunication among multiple bus protocols as well as the reliability of a redundant system are improved.
Description
Technical field
The present invention relates to industrial bus field, particularly relate to a kind of industrial Fieldbus protocols gateway apparatus.
Background technology
Traditional industrial bus network service major part is all the application among a small circle based on limited distance, as to be applied on plant produced line or between a certain technique car in, range of application great majority are all within 1 kilometer range, and traditional industrial bus gateway application is also very ripe in such occasion.At present by wide area network realizes industrial equipment, the remote monitoring of system uses commercial Ethernet protocol technology, consider that the aspects such as the fail safe of industrial applications, reliability and real-time are insufficient, generally just realize less demanding general data function for monitoring, when some need collection site instrumented data, controller generally all must be increased to realize protocol conversion and the network insertion of general purpose instrument bus.
Field bus technique has been widely used in industrial control system, such as SCADA(SupervisoryControlAndDataAcquisition, data acquisition and supervisor control), DCS(DistributedControlSystem, dcs), FCS (FieldbusControlSystem, field bus control system) dispatch control system.In the evolution of bus at the scene, each producer has all developed oneself standard for Fieldbus, causes the incompatibility problem between each bus.Therefore in the application process of reality, just need to have the conversion that equipment realizes between various fieldbus, this conversion has two kinds of modes: a kind of is the mode of transparent transmission; Another kind is the mode of gateway.What the mode of transparent transmission was run at the two ends of conversion equipment is same agreement, and the packing that conversion equipment only carries out data is conciliate job contract and done; What the two ends of gateway device were run is two kinds/multiple different agreement, and gateway device has a real-time data base, and the data of various agreement are all at the enterprising line operate of this real-time data base.The equipment of transparent transmission is relatively simple, and host computer needs the bus protocol realizing field apparatus; For gateway, host computer need not realize the bus protocol of field apparatus.The equipment of two types all has corresponding market, adopts the mode of transparent transmission or gateway according to application difference respectively.
Current each control system or realized the expansion of multi-protocols by the protocol extension unit that oneself researches and develops; Or realize the support to multibus by third-party gateway, therefore a kind of universal protocol conversion gateway device of market in urgent need.
Summary of the invention
The object of the invention is the present situation for multiple bus protocol Parallel running, develop a kind of universal protocol conversion gateway, this industrial Fieldbus protocols gateway apparatus has redundant technique and diversified module assembling mode flexibly and effectively, the interconnecting property between raising multibus agreement and the reliability of redundant system.
For achieving the above object, a kind of industrial Fieldbus protocols gateway apparatus provided by the invention comprises: MCU control module (MicroControllerUnit, micro-control unit, also be one chip microcomputer), I/O interface module (Input/Output, i.e. input/output interface module), human-machine interface module, base plate and power module; I/O interface module be connected with MCU control module by system bus, MCU control module is connected by bus with human-machine interface module; Power module realizes redundant power supply by base plate to MCU control module, human-machine interface module and I/O interface module, and the system of whole device realizes the reliable connection of Ethernet simultaneously.
Preferably, described MCU control module is two, and these two MCU control module adopt stacked framework, and the inside of MCU control module is provided with real-time oss and unifies real-time data base.Adopt this technical scheme, each field bus protocol can be realized and change fast and efficiently, according to different I/O interface modules, two or more agreements can be realized and run simultaneously.
Preferred scheme further, described MCU control module adopts 32 bit CPUs (CentralProcessingUnit, central processing unit), and has 2 40pin interfaces in its both sides.MCU control module can be connected with the parallel bus of outside, multipath serial bus, dual network interface and control line by 2 40pin interfaces.
Further preferred version, described two MCU control module are provided with CPLD logic control element (ComplexProgrammableLogicDevice, CPLD), all CPLD logic control elements adopt same bus to connect, and are realized the effective competition of control between multiple MCU control module by CPLD logic control element.
Effective competition logic between described MCU control module is: all CPLD logic control elements are all provided with and obtain master control power pattern and holding state pattern; When CPLD logic control element is in acquisition master control power pattern, this CPLD logic control element exports square-wave signal to bus; When CPLD logic control element is in holding state pattern, this CPLD logic control element exports without square-wave signal, and CPLD logic control element is at the signal of holding state meeting cycle detection bus; If CPLD logic control element can't detect square-wave signal, then the MCU control module that this CPLD logic control element is corresponding obtains master control power.
When MCU control module breaks down, such as there is power failure, system reset, CPU delay the situation such as machine, program fleet time, the CPLD logic control element stopping square-wave signal output that the MCU control module then broken down is corresponding, allows other MCU control module to take over.
Described each CPLD logic control element is provided with pro-jobs level in advance, to determine the time window of its input.This technical scheme is adopted can preferentially to avoid occurring conflict during competition.
Controlled each signal pins of MCU control module by CPLD logic control element, each signal pins of MCU control module obtaining ownership is effective, and each pin being in the MCU control module of holding state is then high-impedance state; Like this, MCU control module can realize effectively stacked, realizes the redundancy properties of flexibility and reliability.
Described human-machine interface module is provided with the display device of display operation information and fault message.
Described two MCU control module adopt tile mode, and this tile mode is suitable for the larger situation of interface module size, and a gateway apparatus shares an I/O interface module.
Described MCU control module is two, and each MCU control module to having an I/O interface module and base plate, is connected by external bus between two MCU control module separately.
Each bus protocol stack in the MCU control module of major state completes the operation to real-time data base; Each bus protocol stack in the MCU module of holding state does not operate database, and its protocol stack is in idle condition; But any write operation to real-time data base all can be synchronized in the real-time data base of the MCU control module being in holding state in the MCU control module of major state.
The ethernet signal of each MCU control module is drawn out to base plate by MII/RMII interface, is switched by bus switch array, and main control MCU module connects the ethernet transceiver (PHY) be positioned on base plate; The ethernet signal being in the MCU module of holding state is in high-impedance state.When a handover occurs, the MCU module being in holding state changes main control module into, simultaneously adapter ethernet transceiver (PHY) unit.
This mode effectively can reduce the event that network switches, and ethernet transceiver unit does not need detection line situation again; The MCU control module being in master control power state after adapter does not even need again to carry out initialization to ethernet transceiver (PHY).
Accompanying drawing explanation
Fig. 1 is the module architectures composition schematic diagram of a kind of industrial Fieldbus protocols gateway apparatus of the present invention;
Fig. 2 is that in present pre-ferred embodiments, two MCU control module adopt stacked structural representation;
Fig. 3 is the structural representation of two MCU control module employing flush systems in another embodiment of the present invention;
Fig. 4 is the structural representation of two MCU control module employing stacks in yet another embodiment of the invention;
Fig. 5 is the arbitrated logic schematic diagram of the CPLD logic control element of a kind of industrial Fieldbus protocols gateway apparatus of the present invention;
Fig. 6 is the principle schematic of the major state MCU control module of a kind of industrial Fieldbus protocols gateway apparatus of the present invention and the database synchronization of holding state MCU control module;
Fig. 7 is the principle schematic of the backplane lan interface module of a kind of industrial Fieldbus protocols gateway apparatus of the present invention.
Embodiment
As shown in one of Fig. 1 to Fig. 7, a kind of industrial Fieldbus protocols gateway apparatus provided by the invention comprises: MCU control module (MicroControllerUnit, micro-control unit, also be one chip microcomputer), I/O interface module (Input/Output, i.e. input/output interface module), human-machine interface module, base plate and power module; I/O interface module be connected with MCU control module by system bus, MCU control module is connected by system bus with human-machine interface module; Power module realizes redundant power supply by base plate to MCU control module, human-machine interface module and I/O interface module, and the system of whole device realizes the reliable connection of Ethernet simultaneously.
As shown in Figure 2, described MCU control module is two, and these two MCU control module adopt stacked framework, and the inside of MCU control module is provided with real-time oss and unifies real-time data base.Adopt this technical scheme, each field bus protocol can be realized and change fast and efficiently, according to different I/O interface modules, two or more agreements can be realized and run simultaneously.
Certain described MCU control module can adopt 32 bit CPUs (CentralProcessingUnit, central processing unit), and has 2 40pin interfaces in its both sides.MCU control module can be connected with the parallel bus of outside, multipath serial bus, dual network interface and control line by 2 40pin interfaces.
Described in this scheme, two MCU control module are provided with CPLD logic control element (ComplexProgrammableLogicDevice, CPLD), all CPLD logic control elements adopt same bus to connect, and are realized the effective competition of control between multiple MCU control module by CPLD logic control element.
As shown in Figure 5, the effective competition logic between described MCU control module is: all CPLD logic control elements are all provided with and obtain master control power pattern and holding state pattern; When CPLD logic control element is in acquisition master control power pattern, this CPLD logic control element exports square-wave signal to bus; When CPLD logic control element is in holding state pattern, this CPLD logic control element exports without square-wave signal, and CPLD logic control element is at the signal of holding state meeting cycle detection bus; If CPLD logic control element can't detect square-wave signal, then the MCU control module that this CPLD logic control element is corresponding obtains master control power.
When MCU control module breaks down, such as there is power failure, system reset, CPU delay the situation such as machine, program fleet time, the CPLD logic control element stopping square-wave signal output that the MCU control module then broken down is corresponding, allows other MCU control module to take over.
Described each CPLD logic control element is provided with pro-jobs level in advance, to determine the time window of its input.This technical scheme is adopted can preferentially to avoid occurring conflict during competition.
Controlled each signal pins of MCU control module by CPLD logic control element, each signal pins of MCU control module obtaining ownership is effective, and each pin being in the MCU control module of holding state is then high-impedance state; Like this, MCU control module can realize effectively stacked, realizes the redundancy properties of flexibility and reliability.
Certainly the human-machine interface module of our gateway apparatus is all provided with the display device of display operation information and fault message.
As shown in Figure 6, each bus protocol stack in the MCU control module of major state completes the operation to real-time data base; Each bus protocol stack in the MCU module of holding state does not operate database, and its protocol stack is in idle condition; But any write operation to real-time data base all can be synchronized in the real-time data base of the MCU control module being in holding state in the MCU control module of major state.
As shown in Figure 7, the ethernet signal of each MCU control module is drawn out to base plate (not shown in FIG.) by MII/RMII diverter switch interface, is switched by bus switch array, and main control MCU module connects the ethernet transceiver (PHY) be positioned on base plate; The ethernet signal being in the MCU module of holding state is in high-impedance state.When a handover occurs, the MCU module being in holding state changes main control module into, simultaneously adapter ethernet transceiver (PHY) unit.
This mode effectively can reduce the event that network switches, and ethernet transceiver unit does not need detection line situation again; The MCU control module being in master control power state after adapter does not even need again to carry out initialization to ethernet transceiver (PHY).
In other scheme, also can as shown in Figure 3: described two MCU control module adopt tile mode, and this tile mode is suitable for the larger situation of interface module size, a gateway apparatus shares an I/O interface module.
Certainly in other scheme, can also as shown in Figure 4: described MCU control module is two, and each MCU control module to having an I/O interface module and base plate, is connected by external bus between two MCU control module separately.
Claims (10)
1. an industrial Fieldbus protocols gateway apparatus, is characterized in that: it comprises MCU control module, I/O interface module, human-machine interface module, base plate and power module; I/O interface module be connected with MCU control module by system bus, MCU control module is connected by bus with human-machine interface module; Power module realizes redundant power supply by base plate to MCU control module, human-machine interface module and I/O interface module, and whole industrial Fieldbus protocols gateway apparatus Ethernet connects simultaneously.
2. a kind of industrial Fieldbus protocols gateway apparatus according to claim 1, it is characterized in that: described MCU control module is two, and these two MCU control module adopt stacked framework, the inside of MCU control module is provided with real-time oss and unifies real-time data base.
3. a kind of industrial Fieldbus protocols gateway apparatus according to claim 2, it is characterized in that: described MCU control module adopts 32 bit CPUs, and in its both sides, there are 2 40pin interfaces, MCU control module is connected with outside parallel bus, multipath serial bus, dual network interface and control line by 2 40pin interfaces.
4. a kind of industrial Fieldbus protocols gateway apparatus according to claim 2, it is characterized in that: described two MCU control module are provided with CPLD logic control element, all CPLD logic control elements adopt same bus to connect, and CPLD logic control element controls the effective competition between multiple MCU control module.
5. a kind of industrial Fieldbus protocols gateway apparatus according to claim 4, is characterized in that: the effective competition logic between described MCU control module is: all CPLD logic control elements are all provided with and obtain master control power pattern and holding state pattern; When CPLD logic control element is in acquisition master control power pattern, this CPLD logic control element exports square-wave signal to bus; When CPLD logic control element is in holding state pattern, this CPLD logic control element exports without square-wave signal, and CPLD logic control element is at the signal of holding state meeting cycle detection bus; If CPLD logic control element can't detect square-wave signal, then the MCU control module that this CPLD logic control element is corresponding obtains master control power.
6. a kind of industrial Fieldbus protocols gateway apparatus according to claim 5, it is characterized in that: described each CPLD logic control element is provided with pro-jobs level in advance, the pro-jobs level be provided with in advance is in order to determine the signal detection time window of each CPLD logic control element.
7. a kind of industrial Fieldbus protocols gateway apparatus according to claim 1, is characterized in that: described human-machine interface module is provided with the display device of display operation information and fault message.
8. a kind of industrial Fieldbus protocols gateway apparatus according to claim 1, is characterized in that: described MCU control module is two, and described two MCU control module adopt tile mode.
9. a kind of industrial Fieldbus protocols gateway apparatus according to claim 6, is characterized in that: each bus protocol stack in the MCU control module of major state completes the operation to real-time data base; Each bus protocol stack in the MCU module of holding state does not operate database, and its protocol stack is in idle condition; But any write operation to real-time data base all can be synchronized in the real-time data base of the MCU control module being in holding state in the MCU control module of major state.
10. a kind of industrial Fieldbus protocols gateway apparatus according to claim 9, it is characterized in that: the ethernet signal of described each MCU control module is drawn out to base plate by MII/RMII diverter switch interface, switched by bus switch array, main control MCU module connects the ethernet transceiver be positioned on base plate; The ethernet signal being in the MCU module of holding state is in high-impedance state, and when a handover occurs, the MCU module being in holding state changes main control module into, simultaneously adapter ethernet transceiver unit.
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| CN201410246276.8A CN105306352A (en) | 2014-06-05 | 2014-06-05 | Industrial field bus protocol gateway device |
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| CN201410246276.8A CN105306352A (en) | 2014-06-05 | 2014-06-05 | Industrial field bus protocol gateway device |
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Cited By (6)
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| CN109564413A (en) * | 2016-06-09 | 2019-04-02 | 倍福自动化有限公司 | Operate the fieldbus module and method of field bus system |
| CN110398943A (en) * | 2019-07-17 | 2019-11-01 | 上海电机学院 | A kind of multi-layer three-dimensional experiment platform of control system and its building method |
| CN110806735A (en) * | 2019-11-18 | 2020-02-18 | 镇江颀珑工程技术服务有限公司 | Industrial waste gas monitoring system with self-checking function |
| CN111679604A (en) * | 2020-06-05 | 2020-09-18 | 中国石油化工股份有限公司 | Multiple redundant structure of industrial control protocol gateway |
| CN113791992A (en) * | 2021-09-18 | 2021-12-14 | 国家石油天然气管网集团有限公司 | RS485 bus interface circuit |
| CN113904882A (en) * | 2021-09-24 | 2022-01-07 | 广东汇天航空航天科技有限公司 | Communication control system and communication control method of multiple MCU units |
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| CN109564413A (en) * | 2016-06-09 | 2019-04-02 | 倍福自动化有限公司 | Operate the fieldbus module and method of field bus system |
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| CN113791992A (en) * | 2021-09-18 | 2021-12-14 | 国家石油天然气管网集团有限公司 | RS485 bus interface circuit |
| CN113791992B (en) * | 2021-09-18 | 2023-08-15 | 国家石油天然气管网集团有限公司 | RS485 bus interface circuit |
| CN113904882A (en) * | 2021-09-24 | 2022-01-07 | 广东汇天航空航天科技有限公司 | Communication control system and communication control method of multiple MCU units |
| CN113904882B (en) * | 2021-09-24 | 2023-08-18 | 广东汇天航空航天科技有限公司 | Communication control system and communication control method for multiple MCU units |
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Application publication date: 20160203 |