CN106919167A - A kind of fault early warning system and method suitable for Fieldbus Control - Google Patents
A kind of fault early warning system and method suitable for Fieldbus Control Download PDFInfo
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- CN106919167A CN106919167A CN201710264302.3A CN201710264302A CN106919167A CN 106919167 A CN106919167 A CN 106919167A CN 201710264302 A CN201710264302 A CN 201710264302A CN 106919167 A CN106919167 A CN 106919167A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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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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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Debugging And Monitoring (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention discloses a kind of fault early warning system and method suitable for Fieldbus Control, fault early warning system, including Analog input mModule, the Analog input mModule quotes the bus measuring point for accessing DCS, the output connection handover module of Analog input mModule, handover module also records the measuring point before setting time, the Y outputs and N outputs of handover module all access addition module, addition module accesses the day of one's doom small limit module after two data being input into are done into subtraction, the day of one's doom output of small limit module connects the first negated module, the output of the first negated module connects the first time delay module.Avoid the situations such as many equipment error starting, equipment mistrip, generator maloperation locks caused due to field bus device " deadlock ".Improve the production economy of enterprise, it is to avoid many either large or small economic loss.
Description
Technical field
It is pre- the present invention relates to Field Bus Control Technology field, more particularly to a kind of failure suitable for Fieldbus Control
Alert system and method.
Background technology
Fieldbus Control has been related to domestic large-scale thermal power, chemical industry, oil, chemical industry, medicine, metallurgical even processing
Manufacturing industry, and its application field also constantly expanding.Computer control system (DAS) is the basis of all Automated condtrols,
Reliability, the accuracy of its real time value just seem particularly important.For total plant solution bus marco, bus measuring point is introduced
DCS control systems, and apply it to Important Auxiliary equipment interlock protection.In to million grades of large-scale thermal power debugging process,
It was found that there is following defect in bus marco：
In being related to the bus measuring point of new-built unit bus marco by directly reference addition interlock protection condition, do not add any
Restrictive condition.No matter there is during the Large-scale machine set of full factory bus normally runs or all such measuring point after the maintenance of large and small type to be subject to
All kinds of interference are absorbed in the situation of " deadlock " state.
Connected when being related to the bus measuring point Chang Rongyi of new-built unit bus marco to be disturbed by induced voltage, when and break
Line.The analog quantity automatic control system that the bus measuring point of bus marco is participated in, makes to automatically control because measuring point is stopped scanning
It is changed into runaway condition, but alarm free is pointed out.
It is related to the interlock protection that the bus measuring point of new-built unit bus marco participates in control, because measuring point is stopped scanning
Make interlock protection condition ineffective, but alarm free is pointed out.
The content of the invention
The purpose of the present invention is exactly to solve the above problems, there is provided a kind of fault pre-alarming suitable for Fieldbus Control
System and method, it is to avoid many equipment error starting, equipment mistrip, machines caused due to field bus device " deadlock "
The situations such as group mistrip.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of fault early warning system suitable for Fieldbus Control, including Analog input mModule, the analog quantity are defeated
Enter module and quote the bus measuring point for accessing DCS, the output connection handover module of Analog input mModule, handover module will also set
Measuring point before time is recorded, and the Y of handover module output and N outputs all access addition module, addition module will be input into two
Data access the day of one's doom small limit module after doing subtraction, and the day of one's doom output of small limit module connects the first negated module, the first negated mould
The output of block connects the first time delay module.
The handover module also records the measuring point before 1S.
The selection input port of the handover module connects the second negated module, and the input connection second of the second negated module is prolonged
When module output, the output of the second negated module feeds back to the input of the second time delay module, the second negated module of closed loop with
Second time delay module realizes recording the function of setting time jointly；The handover module determines that it is exported by selecting input port
It is Y outputs or N outputs.
The delay time of second time delay module is 1S.
The big of day of one's doom small limit module is limited to 0.0001, small to be limited to -0.0001, when input numerical value is more than 0.0001 or small
When -0.0001, output 1.
The delay time of first time delay module is 5S.
Important measuring point to each participation automation regulation, interlock protection increases the fault early warning system；
Measuring point to each bus measuring point alarm free is interlock protection, automates used by regulation, and will have the measuring point of alarm
Output DO, it is used as the exclusive photon board ejection alarm of the important measuring point of bus.
Using a kind of fault early warning method of fault early warning system suitable for Fieldbus Control, including, by DCS
Quote the signal come from fieldbus transmission；
According to the scan period of DCS, bus measuring point numerical value is contrasted with the measuring point of preceding scan cycle；
Measuring point difference between scan period is calculated, numerical value then exports alarm signal after keeping constant setting time
Number.
The bus measuring point for accessing DCS is quoted with Analog input mModule, a handover module, switching is then accessed
Module records the measuring point before setting time, and handover module accesses an addition module, while real time data is also connect
Enter addition module, two data are carried out into subtraction accesses the day of one's doom small limit module more afterwards, finally send into the first negated module, output
Alarm at " certain bus measuring point " failure dead point.
When bus value persistently changes, the day of one's doom, small limit module was output as " 1 ", after bus measuring point " dead point ", can stop scanning,
I.e. measuring point is to maintain a numeric state, by after the effect of the first negated module, output measuring point is exported when being malfunction
“1”。
Beneficial effects of the present invention：
Monitor in real time is carried out to field bus device operational factor using the stability of distributed monitoring control system, makes system
Between contact it is more tight.
For the safety and stability of domestic large-scale thermal power, chemical industry, oil, chemical industry, medicine, metallurgical even processing manufacturing industry is transported
Row provides more stable monitoring.
Avoid equipment error starting, equipment mistrip, the unit for much causing due to field bus device " deadlock "
The situations such as mistrip.
Improve the production economy of enterprise, it is to avoid many either large or small economic loss.
Brief description of the drawings
Fig. 1 is fault early warning system of the invention；
Fig. 2 is photon board embodiment.
Specific embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
It is accurate, the reliability for realizing bus marco to run into after the problem mentioned in background technology, that is, realize unit safety
Operation, is solved using following approach：
Important measuring point to each participation automation regulation, interlock protection increases fault early warning system as shown in Figure 1, right
The measuring point of each bus measuring point alarm free is interlock protection, automates used by regulation, and will have the measuring point output DO of alarm, as
The exclusive photon board ejection alarm of the important measuring point of bus is used.
A kind of fault early warning system suitable for Fieldbus Control, including field bus control system and decentralised control system
System DCS control systems, including：Two time delay die sinking block TON1 and TON2, two negated module N1 and N2, a switching selection moulds
Block T, addition module ∑, the day of one's doom small limit module H/L, an analog quantity quote block AI.
The bus measuring point for accessing DCS is quoted with Analog input mModule, a handover module, switching is then accessed
Module is to record the measuring point before 1s, accesses an addition module, while real time data is also accessed into addition module, by two
Data carry out " subtraction " and access the day of one's doom small limit module more afterwards, finally send into a first negated module, and " certain bus is surveyed for output
Alarm at point " failure dead point.
Handover module is to determine that it is output as input " Y " or " N " and holds by selecting input port.And its selection input
Mouth is that (when input is 1, time delay certain hour is defeated after 1 second by using a negated module of closed loop second and the second time delay module
Go out the function of 1) realizing " record numerical value one second " jointly.(wherein the second time delay module functional parameter is set to 1s)
Addition module is subtracted by the bus measuring point being provided with this cycle of parameter with the bus measuring point of upper one second
The task that method compares.
The day of one's doom small limit module is to be compared input numerical value with small limit " -0.0001 " with the numerical value day of one's doom " 0.0001 " is set
Compared with, when numerical value is input into more than 0.0001 or less than -0.0001, then output " 1 ".
When bus value persistently changes, the day of one's doom, small limit module was output as " 1 ", but after bus measuring point " dead point ", can stop
Scanning, i.e., measuring point is to maintain a numeric state, and " 1 " is exported when judging output measuring point for malfunction, then ultimately joining
First negated module.
Handover module is to complete " Y " by the change in the scan period to remember with the switching of " N ".
Addition module is respectively "+" and determines that two subtractions of scan period intrinsic parameter are transported with "-" by pin intrinsic parameter
Calculate.
The day of one's doom small limit module intrinsic parameter is respectively general election " 0.0001 " dead band for " 0 " is come with small choosing " -0.0001 " dead band " 0 "
Judge whether two scan period intrinsic parameters change.
The first final time delay module TON1 time delays are 5s, are to judge that 5s remaining unchanged of intrinsic parameter then exports failure.
On application method of the invention：Output after measuring point is judged through the present invention shows in host computer configuration picture
Show, measuring point is carried out configuration by subsystem, after single important measuring point " dead point " failure of certain system, is reported using such as Fig. 2 modes
Alert ejection picture, reminds thermal technology's maintenance troop to carry out the careful treatment work to the measuring point in time.
Using a kind of fault early warning method of fault early warning system suitable for Fieldbus Control,
DCS is quoted the signal come from fieldbus transmission；
According to the scan period of DCS, bus measuring point numerical value is contrasted with the measuring point of preceding scan cycle；
Measuring point difference between scan period is calculated, numerical value keeps after constant holding 5s then output alarm signal.
The present invention is applied to domestic large-scale thermal power, chemical industry, oil, chemical industry, medicine, metallurgical even processing manufacturing industry etc.
The fault early warning system of the bus marco of enterprise or corporate security production, the present invention is completed to bus measuring point using the configuration of DCS
Failure monitoring, prevent because individual bus measuring point " failure " causes damage equipment or causes cancel closedown.
Although above-mentioned be described with reference to accompanying drawing to specific embodiment of the invention, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need the various modifications made by paying creative work or deformation still within protection scope of the present invention.
Claims (10)
1. a kind of fault early warning system suitable for Fieldbus Control, it is characterized in that, including Analog input mModule, the mould
Analog quantity input module quotes the bus measuring point for accessing DCS, and the output of Analog input mModule connects handover module, and handover module is also
Measuring point before setting time is recorded, the Y outputs and N outputs of handover module all access addition module, and addition module will be defeated
Two data for entering access the day of one's doom small limit module after doing subtraction, and the day of one's doom output of small limit module connects the first negated module, first
The output of negated module connects the first time delay module.
2. as claimed in claim 1 a kind of fault early warning system suitable for Fieldbus Control, it is characterized in that, the switching mould
Block also records the measuring point before 1S.
3. as claimed in claim 1 a kind of fault early warning system suitable for Fieldbus Control, it is characterized in that, the switching mould
The selection input port of block connects the second negated module, the output of input second time delay module of connection of the second negated module, second
The output of negated module feeds back to the input of the second time delay module, and the second negated module and second time delay module of closed loop come jointly
Realize the function of record setting time；The handover module is that Y is exported or N is exported by selecting input port to determine that it is exported.
4. as claimed in claim 3 a kind of fault early warning system suitable for Fieldbus Control, it is characterized in that, described second prolongs
When module delay time be 1S.
5. as claimed in claim 1 a kind of fault early warning system suitable for Fieldbus Control, it is characterized in that, the day of one's doom is small
The big of limit module is limited to 0.0001, small to be limited to -0.0001, when numerical value is input into more than 0.0001 or less than -0.0001, output 1.
6. as claimed in claim 1 a kind of fault early warning system suitable for Fieldbus Control, it is characterized in that, described first prolongs
When module delay time be 5S.
7. as claimed in claim 1 a kind of fault early warning system suitable for Fieldbus Control, it is characterized in that, to each participation
Automation regulation, the important measuring point of interlock protection increase the fault early warning system；
Measuring point to each bus measuring point alarm free is interlock protection, automates used by regulation, and the measuring point that will have alarm is exported
DO, it is used as the exclusive photon board ejection alarm of the important measuring point of bus.
8. using a kind of fault early warning method of fault early warning system suitable for Fieldbus Control described in claim 1, its
It is characterized in, including, DCS is quoted the signal come from fieldbus transmission；
According to the scan period of DCS, bus measuring point numerical value is contrasted with the measuring point of preceding scan cycle；
Measuring point difference between scan period is calculated, numerical value keeps after constant setting time then output alarm signal.
9. fault early warning method as claimed in claim 8, it is characterized in that, the bus measuring point analog input of DCS will be accessed
Module is quoted, and then accesses a handover module, and handover module records the measuring point before setting time, switches mould
Block accesses an addition module, while real time data is also accessed into addition module, two data are carried out into subtraction accesses greatly more afterwards
Small limit module is limited, the first negated module, the alarm of output " certain bus measuring point " failure dead point is finally sent into.
10. fault early warning method as claimed in claim 9, it is characterized in that, when bus value persistently changes, the day of one's doom small limit module
It is output as " 1 ", after bus measuring point " dead point ", scanning can be stopped, i.e., measuring point is to maintain a numeric state, by the first negated mould
After the effect of block, output measuring point exports " 1 " when being malfunction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710264302.3A CN106919167B (en) | 2017-04-21 | 2017-04-21 | Fault early warning system and method suitable for field bus control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710264302.3A CN106919167B (en) | 2017-04-21 | 2017-04-21 | Fault early warning system and method suitable for field bus control |
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| CN106919167A true CN106919167A (en) | 2017-07-04 |
| CN106919167B CN106919167B (en) | 2023-06-02 |
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