CN202649800U - Distributed control system network architecture - Google Patents
Distributed control system network architecture Download PDFInfo
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- CN202649800U CN202649800U CN2012203020041U CN201220302004U CN202649800U CN 202649800 U CN202649800 U CN 202649800U CN 2012203020041 U CN2012203020041 U CN 2012203020041U CN 201220302004 U CN201220302004 U CN 201220302004U CN 202649800 U CN202649800 U CN 202649800U
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Abstract
The utility model relates to distributed control system (DCS) network architecture. The DCS network architecture comprises a common network segment, and is characterized in that switchboards of the common network segment and switchboards of a beyond design basis accident (BDBA) network segment are in networking connection; the switchboards of the BDBA is connected with an earthquake monitoring system and the earthquake monitoring system is in signal trigger control of the switchboards of the BDBA, so that function automatic switching between the common network segment and the BDBA segment is realized; devices of the BDBA network segment are connected with an independent uninterruptible power supply; and the network and the devices of the BDBA network segment are anti-seismic I-type apparatuses. The DCS network architecture further comprises a real-time data network and a non-real-time data network, wherein a host computer and a server are simultaneously connected to the two networks; and hardware encryption chips are arranged in a controller and the host computer. The code transmission reliability in the network is realized through the hardware encryption chips; corresponding networks and equipment in the DCS do not lose efficacy under BDBA working conditions; the real-time data and non-real-time data are shunted, and the network load is reduced; and the analog quantity sequence of event (SOE) facilitates the recalling after an accident.
Description
Technical field
The utility model belongs to automated system control technology field, is specifically related to a kind of distribution type control system network architecture.
Background technology
Distribution type control system (Distributed Control System is hereinafter to be referred as DCS) has been widely used in various process control industries at present.From its invention so far, experienced multiple DCS system architecture.
In present employed DCS framework, in the data transmission determinacy, information security, data load, satisfy the application requirements that the aspect such as specific severe rugged environment condition all can not satisfy existing high reliability industrial circle, as the control of nuclear power plant system equipment, technological parameter monitor, operation information is processed and accident record analysis etc.Be in particular in: the code that transmits in the existing DCS network of ⑴ is according to Data Transport Protocol and the data frame format given tacit consent in controller, host computer and the DCS network data directly to be transmitted.Like this, can the optional position from network the equipment in the DCS network be carried out data and read and control as long as procotol and data frame format just had gained some understanding, this is disadvantageous to information security; ⑵ in the existing DCS design, as beyond design basis accident (Beyond Design Basis Accident appears, hereinafter to be referred as BDBA) operating mode, then do not have the DCS network of safety related functions and equipment to lose efficacy and to quit work, and then cause the inefficacy of some important controlled devices; ⑶ sequence of events recording (Sequence Of Event, hereinafter to be referred as SOE) be to be used for one of important means of recollecting after recording control system event order of occurrence and the accident among the existing DCS, the signal that occurs by event in the existing DCS network is converted to the digital quantity trigger pip, be recorded in the system by triggering SOE, and along with the complexity of process system design promotes, event to required record is also more, and trigger pip and time thereof after only recording events occurs on the traditional sense are just not much of that; ⑷ the DCS network that traditional refers to the redundant real time data net of DCS, namely said A/B net in the process control.The related data that the data that send by the standard time interval because of real time data first charge device processed and the host computer that high-speed transfer and response need to be arranged send, because existing process control is more and more higher to the requirement of instrument control system, so that the equipment on the DCS network is more and more, and the quantity of information of transmitting in the DCS network is also increasing, and the load that like this DCS network is caused will significantly increase.
Summary of the invention
In view of existing the problems referred to above in the prior art, the technical problems to be solved in the utility model provides a kind of new distribution type control system network architecture, can guarantee in having now the higher field of process control performance requirement, can satisfy comparatively harsh requirement aspect reliability, information security and the data load.
In order to realize above purpose, the technical solution adopted in the utility model is: a kind of distribution type control system network architecture, comprise the common network segment, it is characterized in that: the beyond design basis accident network segment is connected with described common network segment group of switches net, the switch of the beyond design basis accident network segment is connected with earthquake monitoring system, and be subjected to the earthquake monitoring system signal to trigger control, realize that the function between the described common network segment and the beyond design basis accident network segment automaticallyes switch; The equipment of the described beyond design basis accident network segment is antidetonation I kind equipment, and connects independent uninterrupted power source;
The described common network segment comprises real time data net and non-real-time data net, and controller is connected to the real time data net, and host computer and server are connected to real time data net and non-real-time data net simultaneously.
Described controller and host computer are built-in with hardware encryption chip.
Described controller connecting analog amount sequence of events recording fastener and history server.
Good effect of the present utility model is: ⑴ adds an authentication chip in the network equipments such as controller and host computer, realizes reliability and the security of transmission code in the network by the hardware encipher of chip; ⑵ the ad hoc beyond design basis accident network segment, under the BDBA operating mode that can propose in satisfying the technological requirement of Process Control System, DCS corresponding network and equipment did not still lose efficacy; ⑶ shunt real time data and non-real-time data by real time data net and non-real-time data net, can be implemented in the purpose that reduces network load under the prerequisite of not losing DCS network reliability and realtime control by branching to different networks; ⑷ analog quantity SOE can intactly record the situation of change of some important analog quantity, recollecting after being very beneficial for having an accident.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Fig. 1 is group of switches net mode synoptic diagram of the present utility model;
Fig. 2 is network configuration synoptic diagram of the present utility model.
Embodiment
Be the Effective Raise data transmission efficiency, strengthen the information security degree, satisfy under the severe rugged environment condition and move, thereby guarantee that system reliability requires to be achieved, the distribution type control system network architecture of the present utility model, comprise the common network segment, it is characterized in that: the beyond design basis accident network segment is connected (as shown in Figure 1) with described common network segment group of switches net, the switch of the beyond design basis accident network segment is connected with earthquake monitoring system, and be subjected to the earthquake monitoring system signal to trigger control, realize that the function between the described common network segment and the beyond design basis accident network segment automaticallyes switch; The equipment of the described beyond design basis accident network segment is antidetonation I kind equipment, and connects independent uninterrupted power source; The described common network segment comprises real time data net and non-real-time data net, and controller is connected to the real time data net, and host computer and server are connected to real time data net and non-real-time data net (as shown in Figure 2) simultaneously.
The above controller and host computer are built-in with hardware encryption chip.
The above controller connecting analog amount sequence of events recording fastener and history server (as shown in Figure 2).
In order to realize under the BDBA operating mode, DCS network and equipment did not still lose efficacy, the method that the utility model adopts is: set up the BDBA network segment, the all devices that this network segment adopts (switch, DCS rack, ups power etc.) hardware antidetonation grade will satisfy antidetonation I generic request, all BDBA equipment should have the special-purpose uninterrupted power source UPS of certain capacity, and this ups power should satisfy the process requirements in the process control of concrete application scenario, guarantee the uninterrupted power supply time under the BDBA operating mode, thereby guaranteed that in itself equipment itself can not lose efficacy under the BDBA operating mode.
Improve on the basis of the DCS network that uses and equipment (switch, DCS rack, ups power etc.) antidetonation grade and degree of protection, the BDBA network segment and the non-BDBA network segment cut off isolation automatically under the network failure state function realizes, should judge whether to enter the BDBA operating mode by the signal that is sent by the sympathetic earthquakes monitoring system, and the BDBA function of automatically cutting off of triggering respective switch, guaranteeing in the situation that the switch power down occurs or break down, can automatically cutting off at short notice connection, but not cut off this connection by artificial manual mode.Employed switch judges whether to occur the BDBA operating mode by the signal of being known by earthquake monitoring system in the system in the BDBA network, the BDBA operating mode that can self-identifying have occured.Under common operating mode, the BDBA switch in the BDBA network is realized general switch function, consists of the DCS network; When the BDBA operating mode occured, all BDBA switches cut off the communication with non-BDBA switch automatically, to realize independent networking.Be generally general switch and BDBA switch common networking, its networking mode is wherein distinguished the common network segment and the BDBA network segment as shown in Figure 1.In this way, can avoid under the BDBA operating mode signal error that caused after Yin Putong DCS equipment in network may lose efficacy and cause the misoperation of BDBA relevant device.
Sequence of events recording (SOE) is to be used for one of important means of recollecting after recording control system event order of occurrence and the accident among the existing DCS.The signal that occurs by event in the existing DCS network is converted to the digital quantity trigger pip, is recorded in the system by triggering SOE.
And along with the complexity of process system design promotes, also more to the event of required record.Trigger pip and time thereof after only recording events occurs on the traditional sense are just not much of that.
The utility model is by analog quantity SOE fastener and history server, analog signals can be carried out record by stamping accurately markers.Here the SOE fastener that relates to refers to the analog quantity SOE fastener of certain sample frequency.Concrete implementation is, scan incessantly constantly by the analog quantity that needs are monitored, and when each scan period begins, obtain markers from the system clock server, and the result after will changing with the time target point form be kept in the database.Different from traditional digital quantity SOE record is, analog quantity SOE can intactly record the situation of change of some important analog quantity, and this is very important for recollecting after having an accident.
Can record mass data after considering analog quantity SOE, and generally speaking, only can finish the desired sequence of events recording of control by digital quantity SOE, so analog quantity SOE function is enabled as required, can after certain event occurs by this function of system triggers signal enabling or when some needs by manually booting this function.In the situation that does not start this function, corresponding analog quantity SOE fastener function is the same with common analog input fastener.
Can continuously record data behind the analog quantity SOE function on, these data then can cause network load sharply to increase such as the history server by the network writing system in real time.After enabling for the SOE function of analog quantity, the analog quantity SOE record after controller will record is temporary in the storage facilities of controller.And regularly change automatic unloading by historic data server according to call number.Can reduce network occupancy and rate of load condensate like this.
Because the related application of SOE is based on the demand of concrete process control process system, so this part is not enforceable for using the DCS network architecture of the present utility model.It is more that it specifically is applied in three generations's nuclear power field.Such as the general process control field, can not use this function.
Traditional DCS network refers to the redundant real time data net of DCS, namely said A/B net in the process control.The related data that the data that send by the standard time interval because of real time data first charge device processed and the host computer that high-speed transfer and response need to be arranged send.Because existing process control is more and more higher to the requirement of instrument control system, so that the equipment on the DCS network is more and more, and the quantity of information of transmitting in the DCS network is also increasing.Meeting continuously record data behind the while analog quantity SOE function on, and these data also can cause network load sharply to increase as passing through in real time the history server of network writing system.The load that so whole DCS network is caused will significantly increase.And non-real-time data refers to the data that do not have the strict time regulation to transmit, such as reading historical trend data between file, the host computer, common alert data, network printing machine data etc. transmitting between the host computer.
In the utility model, real time data and non-real-time data are shunted, by walking different networks to be implemented in the purpose that reduces network load under the prerequisite of not losing DCS network reliability and realtime control.
Because controller all is real time data to system's transmission, so to the controller configuration is traditional real time data net, and host computer should receive the real time data of self-controller may transmit non real-time data, so in design, to the design of host computer configuration real time data net and the coexistence of non-real-time data net, be about to two kinds of networks and be connected to simultaneously same equipment.The advantage part of this design is: ⑴ diversifies risks, and all devices can be carried out relevant function, and the inefficacy of certain equipment does not affect the normal operation of other equipment; ⑵ guarantee real-time, reliability and the security of real-time Data Transmission; ⑶ improve the performance of real-time Data Transmission and non-real-time data transmission; ⑷ improved the reliability of network.
In DCS network design of the present utility model, real time data is adoptable to be the self-defining real-time ethernet host-host protocol of enterprise, such as UDP/IP agreement commonly used in the DCS network etc.Include to the time system, markers and relevant encryption technology guarantee the security reliability when guaranteeing implementation.Non-real-time data adopts ICP/IP protocol to cooperate enterprise's self-defining data form again, guarantees ease for use, standardization, reliability.
The realization of non-real-time data net is not simply to install a network adapter that is used for the non-real-time data transmission additional at DCS workstation and server, but need to again write the upper procedure in the DCS system.Except the equipment of similar network printer and so on is only to access the non-real-time data net, other network equipments all are simultaneously access real-time net and non-real-time data net, so need software to judge which data is to transmit by the real time data net; Which data communication device is crossed the transmission of non-real-time data net.In concrete engineering was used, the data of real time data net and non-real-time data net all were that predefined is good.For example, need to have the data of requirement of real-time in working control, include but not limited to: PC control instruction, equipment state feedback information, SOE time scale information etc. all are directly to transmit by the real time data net; And some do not have the data of being strict with to real-time, and include but not limited to: the information of having access to of historical data, the network printer etc. all directly transmit by the non-real-time data net.And in the process that realizes, the real time data net also is different with the data protocol itself that the non-real-time data net adopts, and the requirement to reliability and real-time has been satisfied in the engineering in design itself like this.
The utility model adds an authentication chip in the network equipments such as controller and host computer, realize reliability and the security of transmission code in the network by the hardware encipher of chip.Can realize by the mode that in DCS Platform Designing and production run, installs hardware encryption chip in controller and host computer inside additional.The hardware encryption chip that adopts is by the existing product of the relevant commercialization of Ministry of Public Security's approval (such as 32 high velocity stream hardware encryption chip series of Tsing Hua Tong Fang); because the hardware encryption chip that adopts itself has obtained the relevant information security level authentication; thereby improved the ability of resisting network attack of whole DCS network from root, so that this DCS network can satisfy the higher information security technology grade of defined in the GB/T 22239-2008 information system security class protection basic demand.
In sum, by the accessible following effect of the utility model: strengthen the information security ability of DCS network, full DCS system configuration can reach electric prison information 2007[34 technically] requirement of 3 grades of information security grades in " about carrying out the notice of electric power industry information system safe class protection Grading Work "; DCS under BDBA operating mode network reliability is provided, can satisfies the work a few hours of under the BDBA operating mode, not losing efficacy; The network data amount that solves after analog quantity SOE signal adds improves problem; Reduce the load of DCS real time data net.
Claims (3)
1. distribution type control system network architecture, comprise the common network segment, it is characterized in that: the beyond design basis accident network segment is connected with described common network segment group of switches net, the switch of the described beyond design basis accident network segment is connected with earthquake monitoring system, and be subjected to the earthquake monitoring system signal to trigger control, realize that the function between the described common network segment and the beyond design basis accident network segment automaticallyes switch; The equipment of the described beyond design basis accident network segment is antidetonation I kind equipment, and connects independent uninterrupted power source;
The described common network segment comprises real time data net and non-real-time data net, and controller is connected to the real time data net, and host computer and server are connected to real time data net and non-real-time data net simultaneously.
2. the distribution type control system network architecture according to claim 1, it is characterized in that: described controller and host computer are built-in with hardware encryption chip.
3. the distribution type control system network architecture according to claim 1 and 2 is characterized in that: described controller connecting analog amount sequence of events recording fastener and history server.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012203020041U CN202649800U (en) | 2012-06-27 | 2012-06-27 | Distributed control system network architecture |
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| CN2012203020041U CN202649800U (en) | 2012-06-27 | 2012-06-27 | Distributed control system network architecture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102722163A (en) * | 2012-06-27 | 2012-10-10 | 国核自仪系统工程有限公司 | Distributed control system (DCS) network architecture |
| CN109617736A (en) * | 2018-12-26 | 2019-04-12 | 杭州和利时自动化有限公司 | A kind of data transmission method and relevant apparatus |
-
2012
- 2012-06-27 CN CN2012203020041U patent/CN202649800U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102722163A (en) * | 2012-06-27 | 2012-10-10 | 国核自仪系统工程有限公司 | Distributed control system (DCS) network architecture |
| CN102722163B (en) * | 2012-06-27 | 2017-07-21 | 国核自仪系统工程有限公司 | A kind of distributed network control system |
| CN109617736A (en) * | 2018-12-26 | 2019-04-12 | 杭州和利时自动化有限公司 | A kind of data transmission method and relevant apparatus |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Address after: 200241 No. 428 East Jiangchuan Road, Shanghai, Minhang District Patentee after: STATE NUCLEAR POWER AUTOMATION SYSTEM ENGINEERING Co. Address before: 200241. A2036, building B, building 555, Dongchuan Road, Minhang District, Shanghai Patentee before: STATE NUCLEAR POWER AUTOMATION SYSTEM ENGINEERING Co. |
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| CX01 | Expiry of patent term | ||
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Granted publication date: 20130102 |