CN103034157B - Coke-oven locomotive runs PLC programed interlocking fault rapid identification method automatically - Google Patents
Coke-oven locomotive runs PLC programed interlocking fault rapid identification method automatically Download PDFInfo
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- CN103034157B CN103034157B CN201110290932.0A CN201110290932A CN103034157B CN 103034157 B CN103034157 B CN 103034157B CN 201110290932 A CN201110290932 A CN 201110290932A CN 103034157 B CN103034157 B CN 103034157B
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Abstract
The invention belongs to technical field of electrical automation control, that a kind of coke-oven locomotive runs PLC interlock failure method for quickly identifying automatically, carry out according to the following steps: set a whole word of scale-of-two to each operational process of each operating procedure, according to the sequencing in process control, the interlock condition in each process is enumerated, each interlock condition is composed on each position of the whole word of described scale-of-two; Set each interlock condition under non-faulting state this assignment as " 0 ", condition do not meet or malfunction time this assignment be " 1 "; Detecting whole word by PLC is not the operational process of " 0 ", finds out the operational process at place, trouble spot, then is detected the whole word situation of this process by PLC, find out the position that first assignment is " 1 ", namely find out this interlock condition, find out place, trouble spot; After fault solves, coke-oven locomotive continues to run.The present invention can check all interlock condition fast and accurately, finds guilty culprit.
Description
Technical field
The invention belongs to technical field of electrical automation control, relate to a kind of coke-oven locomotive fault rapid identification method, a kind of coke-oven locomotive runs PLC interlock failure method for quickly identifying automatically specifically.
Background technology
Coke-oven locomotive will run automatically, must ensure that peripheral condition meets each step interlock requirement of PLC (programmable logicalcontroller) programmable logic controller (PLC), in PLC logic instructions process, when certain interlock condition can not meet, just there will be interlock interrupt, thus cause PLC to control automatically to run down, make coke-oven locomotive automatically control to stop.Current display PLC Programmable detection has a lot to the method for fault, modal is exactly that namely method adopts client picture to show fault, but usually to need and server and client set up network, make historical data base to inquire about, such method is very complicated, drops into very high, coke-oven locomotive is run automatically, know which condition concrete does not meet the requirement of automatic interlock, very difficult, need the Theory of Automatic Control that operative employee is very strong.Such as the process that pusher machine is the most complicated---get the process of fire door, automatic control process comprises: a, get a machine bottom and lean forward, and to leaning forward, limit stops; B, get machine and advance (low → high → low), stop to prosodetic; C, carry gate stop, to gate stop identification limit, stop; D, pressure gate bolt, simultaneously pressure are allocated to keeper press-in limit, stop; E, carry door, to proposing a upper limit, stopping; F, get limit after a machine (low → high → low), to rear limit stopping; G, get a machine bottom hypsokinesis, to hypsokinesis limit, stop.Come out from whole process, the result of mechanical action process is by showing relative to the signal that puts in place of course of action, and send into PLC and do the condition of interlocking, continuity process control, when if certain puts in place, signal can not meet, whole interlocking process will stop, and it is not in place such as to get a rotation, that is afraid of a little bit poorer, process so, would not action, and whole coke-pushing process will be in halted state.The full-automatic process of pusher machine is also in halted state, and whole full-automatic process is failure just.Traditional control method just must check this time step by step can not continuous print reason, usually the picture of client is utilized to check, these are simply interlocked can do alarm on picture, after knowing failure cause, needing systematic evaluation is manual mode, carries out reciprocating operation once again, after putting in place, be cut to auto state again, allow PLC run, enter normal process control.Existing control method easily causes the interruption of producing, and this is also a main cause of the failure that current domestic coke-oven locomotive runs automatically.
Summary of the invention
Technical matters to be solved by this invention is, for the shortcoming that above prior art exists, proposes a kind of coke-oven locomotive and automatically runs PLC interlock failure method for quickly identifying, can check all interlock condition fast and accurately, finds guilty culprit.
The technical scheme that the present invention solves above technical matters is:
Coke-oven locomotive runs PLC interlock failure method for quickly identifying automatically, the PLC that coke-oven locomotive is carried by it is divided into multiple operating procedure, each operating procedure is divided into multiple operational process by PLC and automatically runs, each operational process, with interlock condition, carries out interlock failure according to the following steps and identifies fast:
Each operational process of each operating procedure setting (i) to coke-oven locomotive PLC sets a whole word of scale-of-two, according to the sequencing in process control, the interlock condition in each process is enumerated, each interlock condition is composed on each position of the whole word of described scale-of-two;
(ii) set each interlock condition under non-faulting state this assignment as " 0 ", condition do not meet or malfunction time this assignment be " 1 "; If the position that this process is all at the end of a process is all " 0 ", then the whole word of this process is also " 0 "; If have a position in a procedure for " 1 ", then the whole word of this process is not " 0 ", and this process then can not be run down;
(iii) judge whether the operational process of each operating procedure that PLC controls interrupts, and if not, then carries out next operational process; If so, detecting whole word by PLC is not the operational process of " 0 ", finds out the operational process at place, trouble spot, then is detected the whole word situation of this process by PLC, find out the position that first assignment is " 1 ", namely find out this interlock condition, find out place, trouble spot;
(iv), after fault solves, coke-oven locomotive continues to run, and returns step and (iii) carry out cycle criterion.
The technical scheme that the present invention limits further is:
Aforesaid coke-oven locomotive runs PLC interlock failure method for quickly identifying automatically, step (iv) in, PLC is provided with one and enforces step, and enforcing step be the position pressure assignment of " 1 " by original assignment be the step of " 0 ".
Aforesaid coke-oven locomotive runs PLC interlock failure method for quickly identifying automatically, and the whole word of scale-of-two is 16 whole words of scale-of-two or 32 two whole words of scale-of-two.
Advantage of the present invention is: the present invention is directed to coke-oven locomotive and automatically run the many features of interlocking, by PLC, coke-oven locomotive is divided into multiple operating procedure, and operating procedure is divided into multiple operational process, to each process setting whole word of scale-of-two, corresponding with the interlock condition of process by each in the whole word of scale-of-two, by " 0 " or " 1 ", fault whether judgement is carried out to each interlock condition, all interlock condition can be checked fast and accurately, find guilty culprit, simple and practical; Do not need picture usual method switchback manual mode, whole flow process is operated again; Can not waste time, can ensure that coke-oven locomotive Automatic continuous runs.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
Embodiment 1
The present embodiment is that coke-oven locomotive runs PLC interlock failure method for quickly identifying automatically, the flow process PLC that coke-oven locomotive is carried by it is as shown in Figure 1 divided into multiple operating procedure, each operating procedure is divided into multiple operational process by PLC and automatically runs, each operational process, with interlock condition, carries out interlock failure according to the following steps and identifies fast:
Each operational process of each operating procedure setting (i) to coke-oven locomotive PLC sets one 16 the whole words of scale-of-two or 32 two whole words of scale-of-two, according to the sequencing in process control, the interlock condition in each process is enumerated, each interlock condition is composed on each position of the whole word of described scale-of-two;
(ii) set each interlock condition under non-faulting state this assignment as " 0 ", condition do not meet or malfunction time this assignment be " 1 "; If the position that this process is all at the end of a process is all " 0 ", then the whole word of this process is also " 0 "; If have a position in a procedure for " 1 ", then the whole word of this process is not " 0 ", and this process then can not be run down;
(iii) judge whether the operational process of each operating procedure that PLC controls interrupts, and if not, then carries out next operational process; If so, detecting whole word by PLC is not the operational process of " 0 ", finds out the operational process at place, trouble spot, then is detected the whole word situation of this process by PLC, find out the position that first assignment is " 1 ", namely find out this interlock condition, find out place, trouble spot;
(iv), after fault solves, be that the position of " 1 " forces assignment be " 0 " by original assignment, coke-oven locomotive continuation operation, and return step and (iii) carry out cycle criterion.
The present embodiment is divided into multiple step automatic for coke oven operational process, can formulate by technique custom, such as pusher machine runs from having run to after coke pushing to target heat (batch) number to next target bit, this process is divided into 4 processes, to the two whole word of the whole word of each process setting one 16 or 32, interlock condition in each process is enumerated, according to the sequencing in process control, each interlock condition is composed to the position of whole word, for each interlock condition, under non-faulting state, this assignment is " 0 ", condition meet or malfunction time be " 1 ", if at the end of a process, the all position of this process is all that the whole word of " 0 " this process is also because be " 0 ".In a procedure, when this process can not be run down, PLC detects the whole word situation of this process, as long as break down, it is " 0 " that this whole word has control bit not certainly, and so this whole word is not just " 0 ", as long as whole word is non-vanishing, just can know which position is not " 0 ", know which position is not " 0 ", just know place, trouble spot.The whole word such as getting a process setting is D1, get in a process, sequential control condition adds that safety interlocking condition one has ten conditions, a position of the corresponding whole word D1 of each condition, namely D1 is up to " 1111111111 ", in actual motion, when each signal is effective, assignment is zero, when failsafe normally runs, each position is 0 successively, namely D1 value is " 0 " at the end of flow process, if there is fault, to occur that certain position always can not be effectively processed, namely be " 1 " always, so course of action will stop, D1 also can not be zero, after diagnosis button is triggered, program is diagnosed D1, to foremost, that is that the position of " 1 " shows, i.e. guilty culprit.
The concrete execution of the present embodiment is as follows:
First locomotive control program is divided into multiple process by technique custom, such as pusher machine, can be divided into by operational process: traveling contraposition, get fire door, the flat coal of coke pushing, pass fire door Four processes, compose a whole word to each process, assignment is respectively: D0, D1, D2, D3; And for each process, its logical relation is arranged, arrange sequentially, to get fire door: wherein safety interlocking condition is 3, this process of the interlocking of sequential control has 7 influence factors of interlocking in order, run downwards in due order and be respectively: a, get a machine bottom and lean forward, to leaning forward, limit stops; B, get machine and advance (low → high → low), stop to prosodetic; C, carry gate stop, to gate stop identification limit, stop; D, pressure gate bolt, simultaneously pressure are allocated to keeper press-in limit, stop; E, carry door, to proposing a upper limit, stopping; F, get limit after a machine (low → high → low), to rear limit stopping; G, get a machine bottom hypsokinesis, to hypsokinesis limit, stop, getting a process and terminate; Successively these signals that put in place are composed a position for whole word D1, if D1 is the whole word of 16 like this, the interlocking so getting a program relevant is just filled with 10 positions.
The position that each interlock condition is relative, when condition activates, be set to " 0 ", condition does not meet or malfunction is then set to " 1 ", such as: carry gate stop, limit this signal at the 4th of whole word D1 to gate stop identification, after gate stop acknowledgement bit puts in place, then the 4th of D1 is " 0 ", if gate stop confirms not put in place, then the 4th of D1 is " 1 ", if carrying the safety condition before gate stop, lean forward and put in place, pressure gate is bolted to position, and gate stop acknowledgement bit not in place when, then the whole word of D1 just becomes " 000000000011111 " if the decimal system, is shown as 31.
Detecting in whole word first is not the position that " 0 " is " 1 ", and shows.Such as: if the gate stop acknowledgement bit in above-mentioned example does not put in place, then the whole word of D1 just becomes " 000000000011111 ", the decimal system is then 31.It is not the position of " 0 " that PLC calculates first of D1, then show gate stop acknowledgement bit fault, and after trouble shooting, PLC controls coke-oven locomotive and continues operation.One can be arranged and enforce step, namely automatically reset when the whole word of process is 0 forced signal, thus ensure that flow process continues, such as gate stop is being forced to put signal in place for after " 0 ", then when this process terminates to be D1 to be " 0 ", reset gate stop forced signal, such control procedure is more continuous, can not waste time.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (3)
1. coke-oven locomotive runs PLC interlock failure method for quickly identifying automatically, it is characterized in that: operation is divided into multiple operating procedure by its PLC carried by technique by described coke-oven locomotive, described each operating procedure will be divided into multiple operational process by described PLC by technique and automatically run, described each operational process is with interlock condition, a whole word of scale-of-two is set to each operational process of each operating procedure of coke-oven locomotive PLC setting, according to the sequencing in process control, the interlock condition in each process is enumerated, each interlock condition is composed on each position of the whole word of described scale-of-two, setting each interlock condition described this assignment under non-faulting state is " 0 ", and in condition, during satisfied or malfunction, this assignment is " 1 ", if the position that this process is all at the end of a process is all " 0 ", then the whole word of this process is also " 0 ", if have a position in a procedure for " 1 ", then the whole word of this process is not " 0 ", and this process then can not be run down, and carry out interlock failure according to the following steps and identify fast:
(i) judge whether the operational process of each operating procedure that PLC controls interrupts, and if not, then carries out next operational process; If so, detecting whole word by PLC is not the operational process of " 0 ", finds out the operational process at place, trouble spot, then is detected the whole word situation of this process by PLC, find out the position that first assignment is " 1 ", namely find out this interlock condition, find out place, trouble spot;
(ii), after fault solves, coke-oven locomotive continues to run, and returns step and (i) carry out cycle criterion.
2. coke-oven locomotive as claimed in claim 1 runs PLC interlock failure method for quickly identifying automatically, it is characterized in that: described step (ii) in, described PLC is provided with one and enforces step, and described compulsory execution step be the position pressure assignment of " 1 " by original assignment is the step of " 0 ".
3. coke-oven locomotive as claimed in claim 1 or 2 runs PLC interlock failure method for quickly identifying automatically, it is characterized in that: the whole word of described scale-of-two is 16 whole words of scale-of-two or 32 two whole words of scale-of-two.
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| CN201540474U (en) * | 2009-09-22 | 2010-08-04 | 鞍钢股份有限公司 | Transmission and control system of coke dry quenching loading device |
| CN101847004A (en) * | 2010-06-03 | 2010-09-29 | 中南大学 | Method for performance evaluation and failure diagnosis of coke oven multi-loop control system |
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2011
- 2011-09-29 CN CN201110290932.0A patent/CN103034157B/en active Active
Patent Citations (6)
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| JP2002062910A (en) * | 2000-08-22 | 2002-02-28 | Digital Electronics Corp | Editor device and storage medium recording editor program |
| CN101171556A (en) * | 2006-01-25 | 2008-04-30 | 东芝三菱电机产业系统株式会社 | Equipment control system |
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| CN101592948A (en) * | 2009-04-15 | 2009-12-02 | 卡斯柯信号有限公司 | A kind of regional computer interlocking control method with terrain control |
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