CN204667177U - The measuring system of a kind of Main Assistant Controller switching time - Google Patents
The measuring system of a kind of Main Assistant Controller switching time Download PDFInfo
- Publication number
- CN204667177U CN204667177U CN201520344038.0U CN201520344038U CN204667177U CN 204667177 U CN204667177 U CN 204667177U CN 201520344038 U CN201520344038 U CN 201520344038U CN 204667177 U CN204667177 U CN 204667177U
- Authority
- CN
- China
- Prior art keywords
- module
- controller
- master controller
- bus
- switching time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The utility model discloses the measuring system of a kind of Main Assistant Controller switching time, comprise the first master controller, the first assistant controller, output switch parameter module, an IO bus, the second master controller, On-off signal module and the 2nd IO bus, described first master controller, described first assistant controller and described output switch parameter module are connected to a described IO bus, described second master controller and described On-off signal module are connected to described 2nd IO bus, and described output switch parameter module is connected with described On-off signal module.The utility model is simple to operate, without the need to extra cost.
Description
Technical field
The utility model relates to scattered control system technical field, particularly relates to the system of a kind of Main Assistant Controller switching time.
Background technology
Scattered control system take controller as decentralised control, the centralized operation device of core, and each controller forms an independent control subsystem, and controller independently can carry out logical operation, stepless control, the functions such as sequential control.Along with scattered control system is in the extensive application of heat power station and chemical industry, the performance of scattered control system and the requirement of reliability are seemed particularly important, most thermal power plant is in order to the reliability service of equipment, the controller of the redundancy all adopted carries out centralized control to equipment, namely when main operation controller goes wrong, assistant controller can adapter control in time, thus realize the reliable and secure operation of equipment, the redundant fashion of controller is mainly two-node cluster hot backup, namely Main Assistant Controller is provided with identical inner software, and share I O bus; Have based on TCP/IP interface mode or serial ports bind mode as heartbeat detection link between Main Assistant Controller, guarantee to detect whether normal to machine system by continuous communication contact between Main Assistant Controller and whether data are synchronous; Master controller is once break down, and assistant controller starts related service at once and takes over.The switching time of this two-node cluster hot backup is very short, is approximately the order of magnitude of Millisecond, and the checking of heartbeat detection link detecting determines that master controller quits work or delay after machine, and assistant controller could start; Monopolize the read-write of IO bus during master controller work, now assistant controller cannot access IO bus, only has the control that just can obtain IO after switching, and needs to start relevant service to adapter IO bus simultaneously.
Above-mentioned explanation represents, the switching of controller can make control loop occur the interruption of short time, and this there will be impact to the control of the higher equipment of some requirement of real-times of thermal power plant.The ever more important so the measurement of the switching time of controller seems, at present neither one standard is gone back to the measurement of the switching time of different control system controller, and the equipment that general needs are special and expensive, for thermal power station or for enterprise, be badly in need of a set of simple and reliable method, equipment detects.
Utility model content
Technical problem to be solved in the utility model is, provides the measuring system of a kind of Main Assistant Controller switching time, need not the equipment of special costliness, and can be completed the measurement of switching time by plant equipment, simple to operate, accuracy is high.
In order to solve the problems of the technologies described above, the utility model provides the measuring system of a kind of Main Assistant Controller switching time, comprise the first master controller, first assistant controller, output switch parameter module, one IO bus, second master controller, On-off signal module and the 2nd IO bus, described first master controller, described first assistant controller and described output switch parameter module are connected to a described IO bus, described second master controller and described On-off signal module are connected to described 2nd IO bus, described output switch parameter module is connected with described On-off signal module.
Wherein, described first master controller comprises rest-set flip-flop module and computing module, the R end of described rest-set flip-flop module is connected to the output terminal of described rest-set flip-flop module, the output terminal of described rest-set flip-flop module is also connected to the input end of described computing module, the output terminal of described computing module is connected to the S end of described rest-set flip-flop module, and described computing module is that output equals input and has T
outthe computing module of performance period of/2.
Implement the utility model, there is following beneficial effect:
The utility model need not the equipment of special costliness, and can be completed the measurement of this switching time by plant equipment, simple to operate, accuracy is high.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the system chart of an embodiment of the measuring system of assistant controller switching time that the utility model provides;
Fig. 2 is the schematic diagram of square wave test signal;
Fig. 3 is the square wave test signal output principle figure of the first master controller;
Fig. 4 be controller when not switching and controller switch after the contrast schematic diagram of square wave test signal.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the system chart of an embodiment of the measuring system of Main Assistant Controller switching time that the utility model provides, as shown in Figure 1, comprise the first master controller, first assistant controller, output switch parameter module, one IO bus, second master controller, On-off signal module and the 2nd IO bus, described first master controller, described first assistant controller and described output switch parameter module are connected to a described IO bus, described second master controller and described On-off signal module are connected to described 2nd IO bus, described output switch parameter module is connected with described On-off signal module.
Wherein, described first master controller is used for exporting square wave test signal to described On-off signal module by described output switch parameter module, and the cycle of described square wave test signal is T
out; Wherein, as shown in Figure 2, the cycle of described square wave test signal is T
out.
Concrete, as shown in Figure 3, described first master controller comprises rest-set flip-flop module and computing module, the R end of described rest-set flip-flop module is connected to the output terminal of described rest-set flip-flop module, the output terminal of described rest-set flip-flop module is also connected to the input end of described computing module, the output terminal of described computing module is connected to the S end of described rest-set flip-flop module, and the output of described computing module equals input, has T
outthe performance period of/2, thus make the R of described rest-set flip-flop module end and S hold alternate intervals to be 1, thus the output cycle is T
outsquare wave test signal.
Described On-off signal module is used for the change records of the skip signal of described square wave test signal and corresponding moment send and are stored to described second master controller.Wherein, described skip signal comprises rising edge signal and negative edge signal.The change records of the rising edge signal of described square wave test signal and negative edge signal and corresponding moment send and are stored to described second master controller by On-off signal module.
Described first assistant controller is used for when described first master controller quits work, and switches to the first assistant controller to continue to send square wave test signal.
The square wave test signal of described second master controller also for receiving after switching according to controller calculates switching time, wherein, and T
takeover=T
2-T
1-T
out/ 2, in formula, T
takeoverrepresent switching time, T
2the moment of first skip signal of the square wave test signal that described second master controller receives after expression controller switches, T
1represent and the square wave test signal that described second master controller receives is positioned at T
2the moment of the previous skip signal in moment.Because when controller does not switch, the moment of twice adjacent events is respectively T
1and T
1+ T
out/ 2, with reference to the former square wave test signal of figure 4; When controller is at T
1moment, when switching, before and after switching, the moment of logout was respectively T
1and T
2=T
1+ T
out/ 2+T
takeover, therefore switching time T
takeoverfor T
2and T
1for switching the difference of twice event time of front and back, i.e. T
takeover=T
2-T
1-T
out/ 2.Wherein, skip signal both can be rising edge signal can be also negative edge signal, T shown in Fig. 3
2for negative edge signal, T
1for rising edge signal.
Implement the utility model, there is following beneficial effect:
The utility model need not the equipment of special costliness, and can be completed the measurement of this switching time by plant equipment, simple to operate, accuracy is high.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or device and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or device.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the device comprising this key element and also there is other identical element.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
In several embodiments that the application provides, should be understood that, disclosed system and method can realize by another way.Such as, system embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
Professional can also recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present utility model.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (2)
1. the measuring system of Main Assistant Controller switching time, it is characterized in that, comprise the first master controller, the first assistant controller, output switch parameter module, an IO bus, the second master controller, On-off signal module and the 2nd IO bus, described first master controller, described first assistant controller and described output switch parameter module are connected to a described IO bus, described second master controller and described On-off signal module are connected to described 2nd IO bus, and described output switch parameter module is connected with described On-off signal module.
2. the measuring system of as claimed in claim 1 Main Assistant Controller switching time, it is characterized in that, described first master controller comprises rest-set flip-flop module and computing module, the R end of described rest-set flip-flop module is connected to the output terminal of described rest-set flip-flop module, the output terminal of described rest-set flip-flop module is also connected to the input end of described computing module, the output terminal of described computing module is connected to the S end of described rest-set flip-flop module, and described computing module is that output equals input and has T
outthe computing module of performance period of/2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520344038.0U CN204667177U (en) | 2015-05-25 | 2015-05-25 | The measuring system of a kind of Main Assistant Controller switching time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520344038.0U CN204667177U (en) | 2015-05-25 | 2015-05-25 | The measuring system of a kind of Main Assistant Controller switching time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204667177U true CN204667177U (en) | 2015-09-23 |
Family
ID=54137539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520344038.0U Active CN204667177U (en) | 2015-05-25 | 2015-05-25 | The measuring system of a kind of Main Assistant Controller switching time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204667177U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107992027A (en) * | 2017-12-13 | 2018-05-04 | 中核控制***工程有限公司 | A kind of DCS redundant communication modules switching method |
-
2015
- 2015-05-25 CN CN201520344038.0U patent/CN204667177U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107992027A (en) * | 2017-12-13 | 2018-05-04 | 中核控制***工程有限公司 | A kind of DCS redundant communication modules switching method |
| CN107992027B (en) * | 2017-12-13 | 2020-05-22 | 中核控制***工程有限公司 | DCS redundant communication module switching method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104950765B (en) | A kind of inverter parallel system and its carrier synchronization method based on CAN | |
| CN103455005B (en) | Controller redundancy and switching method | |
| CN101378267A (en) | Primary and secondary switching device, and switching method using the same | |
| CN102723775A (en) | Reliability assessment method for secondary system of intelligent substation | |
| CN110427283B (en) | Dual-redundancy fuel management computer system | |
| CN102053883A (en) | Control cycle synchronizer of triple-modular redundancy fault-tolerant computer | |
| CN105184029A (en) | Electric power communication hybrid system simulation platform and simulation method thereof | |
| CN103684734B (en) | A kind of hot-standby redundancy computer time synchronization system and method | |
| CN104914853A (en) | Measurement method and system for switching time of main and auxiliary controllers | |
| CN103425553A (en) | Duplicated hot-standby system and method for detecting faults of duplicated hot-standby system | |
| CN102841962B (en) | Electromagnetic-electromechanical transient hybrid real-time simulation interface interaction method based on advanced calculation | |
| CN102866698B (en) | Human machine interface (HMI) redundant communication method for distributed control system controller | |
| CN103139033A (en) | Primary device redundancy switching method of single main communication control bus | |
| CN204667177U (en) | The measuring system of a kind of Main Assistant Controller switching time | |
| CN203338127U (en) | Dual-redundancy control system for AGV | |
| Matsuo et al. | A dual modular redundancy scheme for CPU–FPGA platform-based systems | |
| CN102231700B (en) | Exchange card switching information transmission method and exchange card hot backup system | |
| CN104092240A (en) | Method and system for recognizing connection mode of photovoltaic modules | |
| CN106338938B (en) | A kind of backplane bus communication addressing system and method | |
| CN110247809B (en) | Communication control method of double-ring network control system | |
| CN108009047B (en) | Dual-computer hot standby model and implementation method | |
| CN112000286A (en) | Four-control full-flash-memory storage system and fault processing method and device thereof | |
| CN110988599A (en) | Distributed wave recording high-precision synchronization method for power distribution fault indicator | |
| CN110597124A (en) | Communication architecture with redundant hardware | |
| CN101916212B (en) | System and method for fault-to-safety of COTS (Commercial Off-The-Shelf) computer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210032 8 Xing Huo Road, Pukou hi tech Development Zone, Nanjing, Jiangsu Patentee after: Nanjing Guodian Nanzi 710086 Automation Co. Ltd. Address before: 210032 8 Xing Huo Road, Pukou hi tech Development Zone, Nanjing, Jiangsu Patentee before: Nanjing Guodian Nanzi Meizhuo Control System Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |