CN103034157A - Automatic running programmable logic controller (PLC) program interlocking fault quick recognition method of coke oven locomotive - Google Patents
Automatic running programmable logic controller (PLC) program interlocking fault quick recognition method of coke oven locomotive Download PDFInfo
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- CN103034157A CN103034157A CN2011102909320A CN201110290932A CN103034157A CN 103034157 A CN103034157 A CN 103034157A CN 2011102909320 A CN2011102909320 A CN 2011102909320A CN 201110290932 A CN201110290932 A CN 201110290932A CN 103034157 A CN103034157 A CN 103034157A
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Abstract
The invention relates to an automatic running programmable logic controller (PLC) interlocking fault quick recognition method of a coke oven locomotive and belongs to the technical field of electric automatic control. The method includes the following steps: setting a binary integral character for each running process of each running step, enumerating the interlocking condition of each process according to the sequence in process control, assigning each interlocking condition on the corresponding bit of the binary integral character, setting assignment of the bit of each interlocking condition under the non-fault state to be '0' and to be '1' when the condition is not satisfied or in the fault state, utilizing a programmable logic controller (PLC) to detect the running process that the integral character is not '0', finding the running process of fault points, utilizing the PLC to detect the integral character condition of the process, finding a first bit with assigned value as '1', finding the interlocking condition of the bit, finding the fault point and enabling the coke oven locomotive to run continuously after the fault is resolved. The automatic running PLC interlocking fault quick recognition method is capable of quickly and accurately checking all interlocking conditions and finding faults.
Description
Technical field
The invention belongs to electric automatization control technology field, relate to a kind of coke-oven locomotive fault method for quickly identifying, a kind of coke-oven locomotive moves PLC interlock failure method for quickly identifying automatically specifically.
Background technology
Coke-oven locomotive will move automatically, must guarantee that peripheral condition satisfies each step interlock requirement of PLC (programmable logical controller) programmable logic controller (PLC), in PLC logic instructions process, when certain interlocking condition can not satisfy, interlocking will occur interrupts, thereby cause PLC control automatically to move down, coke-oven locomotive is controlled automatically stopped.The method that present demonstration PLC program detects fault has a lot, modal is exactly that method namely adopts the client picture that fault is shown, but needs and server and client are set up network usually, make historical data base in order to inquire about, such method is very complicated, drops into very high, for automatically operation of coke-oven locomotive, know that concrete which condition does not satisfy the requirement of automatic interlock, very difficult, need the very strong Theory of Automatic Control of operative employee.For example take the most complicated process of pusher machine---get the process of fire door as example, automatic control process comprises: a, get a machine bottom and lean forward, limit stops to leaning forward; B, get a machine and advance (low → high → low), stop to prosodetic; C, carry gate stop, to gate stop identification limit, stop; D, pressure gate bolt, press and be allocated to keeper and be pressed into limit, stop simultaneously; E, carry the door, to putting forward a upper limit, stopping; F, get limit behind the machine (low → high → low), stop to rear limit; G, get a machine bottom hypsokinesis, to the hypsokinesis limit, stop.Open from whole process, the result of mechanical action process shows by the signal that puts in place with respect to course of action, and send into the condition that PLC makees interlocking, the continuity process control, whole interlocking process will stop when signal can not satisfy if certain puts in place, for example got a rotation not in place, that is afraid of a little bit poorer, process so just can not moved, and whole coke-pushing process will be in halted state.The full-automatic process of pusher machine also is in halted state, and whole full-automatic process is failure just.Traditional control method just must check step by step this time can not be continuous reason, usually utilize the picture of client to check, these are simply interlocked can do alarm on picture, after knowing failure cause, need to switch to manual state to system, carry out again back and forth operation once, after putting in place, be cut to again auto state, allow PLC move down, enter normal process control.Existing control method easily causes the interruption of producing, and this also is an automatically main cause of the failure of operation of present domestic coke-oven locomotive.
Summary of the invention
Technical matters to be solved by this invention is that the shortcoming for above prior art exists proposes a kind of coke-oven locomotive and automatically moves PLC interlock failure method for quickly identifying, can check fast and accurately all interlocking conditions, finds guilty culprit.
The technical scheme that the present invention solves above technical matters is:
Coke-oven locomotive moves PLC interlock failure method for quickly identifying automatically, coke-oven locomotive is divided into a plurality of operating procedures by its PLC that carries, each operating procedure is divided into a plurality of operational processs by PLC and automatically moves, each operational process is with the interlocking condition, carries out according to the following steps interlock failure and identifies fast:
(1) set the whole word of scale-of-two for each operational process of each operating procedure of coke-oven locomotive PLC setting, according to the sequencing in the process control interlocking condition in each process is enumerated, each interlocking condition is composed on each position of the whole word of described scale-of-two;
(2) set each interlocking condition under non-malfunction this assignment for " 0 ", condition do not satisfy or during malfunction this assignment be " 1 "; If all positions of this process all are " 0 " when a process finishes, then the whole word of this process also is " 0 "; If there is a position to be " 1 " in a process, then the whole word of this process is not " 0 ", and this process then can not be moved down;
Whether the operational process of (three) judging each operating procedure of PLC control interrupts, and if not, then carries out next operational process; If, detect whole word by PLC and be not the operational process of " 0 ", find out the operational process at place, trouble spot, detect again the whole word situation of this process by PLC, find out first assignment and be the position of " 1 ", namely find out this interlocking condition, find out the place, trouble spot;
(4) after fault solved, coke-oven locomotive continued operation, and returns step (three) and carry out cycle criterion.
The technical scheme that the present invention further limits is:
Aforesaid coke-oven locomotive moves PLC interlock failure method for quickly identifying automatically, and in the step (four), PLC is provided with one and executes step, and executing step is original assignment to be forced assignment for the position of " 1 " be the step of " 0 ".
Aforesaid coke-oven locomotive moves 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 move the many characteristics of interlocking, by PLC coke-oven locomotive is divided into a plurality of operating procedures, and operating procedure is divided into a plurality of operational processs, to whole word of scale-of-two of each process setting, corresponding with the interlocking condition of process by in the whole word of scale-of-two each, come each interlocking condition is carried out fault whether judgement by " 0 " or " 1 ", can check fast and accurately all interlocking conditions, find guilty culprit, simple and practical; Do not need picture usual method switchback manual state, whole flow process is operated again; Can not waste time, can guarantee the operation of coke-oven locomotive Automatic continuous.
Description of drawings
Fig. 1 is process flow diagram of the present invention.
Embodiment
Embodiment 1
The present embodiment is that coke-oven locomotive moves PLC interlock failure method for quickly identifying automatically, flow process as shown in Figure 1 coke-oven locomotive is divided into a plurality of operating procedures by its PLC that carries, each operating procedure is divided into a plurality of operational processs by PLC and automatically moves, each operational process is with the interlocking condition, carries out according to the following steps interlock failure and identifies fast:
(1) set one 16 whole words of scale-of-two or 32 two whole words of scale-of-two for each operational process of each operating procedure of coke-oven locomotive PLC setting, according to the sequencing in the process control interlocking condition in each process is enumerated, each interlocking condition is composed on each position of the whole word of described scale-of-two;
(2) set each interlocking condition under non-malfunction this assignment for " 0 ", condition do not satisfy or during malfunction this assignment be " 1 "; If all positions of this process all are " 0 " when a process finishes, then the whole word of this process also is " 0 "; If there is a position to be " 1 " in a process, then the whole word of this process is not " 0 ", and this process then can not be moved down;
Whether the operational process of (three) judging each operating procedure of PLC control interrupts, and if not, then carries out next operational process; If, detect whole word by PLC and be not the operational process of " 0 ", find out the operational process at place, trouble spot, detect again the whole word situation of this process by PLC, find out first assignment and be the position of " 1 ", namely find out this interlocking condition, find out the place, trouble spot;
(4) after fault solves, be that to force an assignment be " 0 " position of " 1 " with original assignment, the coke-oven locomotive continuation moves, and returns step (three) and carry out cycle criterion.
The present embodiment is divided into a plurality of steps to the automatic operational process of coke oven, can formulate by the technique custom, for example pusher machine is finished the backward next target bit operation of coke pushing from running to the target heat (batch) number, this process is divided into 4 processes, give the whole word of one 16 of each process settings or 32 two whole word, interlocking condition in each process is enumerated, according to the sequencing in the process control, each interlocking condition is composed the position of whole word, for each interlocking condition, under non-malfunction, this assignment is " 0 ", do not satisfy or be " 1 " during malfunction in condition, if when a process finishes, all positions of this process all be that the whole word of " 0 " this process is also because of being " 0 ".In a process, when this process can not be moved down, PLC detects the whole word situation of this process, as long as break down, this whole word has control bit not to be " 0 " certainly, and this whole word is not " 0 " just so, as long as whole word is non-vanishing, just can know which position is not " 0 ", know which position is not " 0 ", just knows the place, trouble spot.The whole word of for example getting a process setting is D1, get in the process, the sequential control condition adds that safety interlocking condition one has ten conditions, the position of the corresponding whole word D1 of each condition, be that D1 is up to " 1111111111 ", in actual motion, when each signal was effective, assignment was zero, when failsafe normally moves, each position is 0 successively, and namely the D1 value is " 0 " when flow process finishes, if there is fault, certain position to occur always can not be effectively processed, namely be " 1 " that so course of action will stop, D1 can not be zero yet always, after the diagnosis button is triggered, program is diagnosed D1, that position for " 1 ", foremost is shown, i.e. guilty culprit.
The concrete execution of the present embodiment is as follows:
At first the locomotive control program is divided into a plurality of processes by the technique custom, pusher machine for example, can be divided into by operational process: the traveling contraposition, get fire door, the flat coal of coke pushing, pass fire door Four processes, each process is composed a whole word, assignment is respectively: D0, D1, D2, D3; And for each process its logical relation is put in order, arrange sequentially, to get fire door as example: wherein the safety interlocking condition is as 3, this process of the interlocking of sequential control has 7 interlocking influence factors in order, downwards operation is respectively in due order: a, get a machine bottom and lean forward, limit stops to leaning forward; B, get a machine and advance (low → high → low), stop to prosodetic; C, carry gate stop, to gate stop identification limit, stop; D, pressure gate bolt, press and be allocated to keeper and be pressed into limit, stop simultaneously; E, carry the door, to putting forward a upper limit, stopping; F, get limit behind the machine (low → high → low), stop to rear limit; G, get a machine bottom hypsokinesis, to the hypsokinesis limit, stop, getting a process and finish; Successively these signals that put in place are composed and be the position of whole word D1, if D1 is 16 whole word like this, gets so the interlocking that a program is correlated with and just filled up 10 positions.
The position that each interlocking condition is relative, in the situation that condition activates, be set to " 0 ", condition does not satisfy or malfunction then is set to " 1 ", for example: carry gate stop, limit this signal at the 4th of whole word D1 to the gate stop identification, after the gate stop acknowledgement bit puts in place, then the 4th of D1 the is " 0 ", if gate stop is confirmed not put in place, then the 4th of D1 the is " 1 ", if at the safety condition of carrying the gate stop front, lean forward and put in place, pressure gate is bolted to the position, and in the gate stop acknowledgement bit situation not in place, then the whole word of D1 just becomes " 000000000011111 " if the decimal system then be shown as 31.
Detecting in the whole word first is not the position of " 1 " for " 0 ", and shows.For example: if the gate stop acknowledgement bit in the above-mentioned example does not put in place, then the whole word of D1 just becomes " 000000000011111 ", and the decimal system then is 31.PLC calculate D1 first not for the position of " 0 ", then show gate stop acknowledgement bit fault, after the trouble shooting, PLC control coke-oven locomotive continues to move.Can arrange one and execute step, namely the whole word in process is 0 o'clock forced signal that automatically resets, thereby guarantee that flow process continues, for example force gate stop put in place signal for " 0 " after, then finishing in this process is that D1 is when being " 0 ", the gate stop forced signal that resets, control procedure is more continuous like this, 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 requirement of the present invention.
Claims (3)
1. coke-oven locomotive moves PLC interlock failure method for quickly identifying automatically, it is characterized in that: described coke-oven locomotive is divided into a plurality of operating procedures by technique with operation by its PLC that carries, described each operating procedure will be divided into a plurality of operational processs by described PLC by technique and automatically move, described each operational process is with the interlocking condition, and carries out according to the following steps interlock failure and identify fast:
(1) set the whole word of scale-of-two for each operational process of each operating procedure of coke-oven locomotive PLC setting, according to the sequencing in the process control interlocking condition in each process is enumerated, each interlocking condition is composed on each position of the whole word of described scale-of-two;
(2) setting described each interlocking condition this assignment under non-malfunction be " 0 ", and this assignment is " 1 " during satisfied or malfunction in condition; If all positions of this process all are " 0 " when a process finishes, then the whole word of this process also is " 0 "; If there is a position to be " 1 " in a process, then the whole word of this process is not " 0 ", and this process then can not be moved down;
Whether the operational process of (three) judging each operating procedure of PLC control interrupts, and if not, then carries out next operational process; If, detect whole word by PLC and be not the operational process of " 0 ", find out the operational process at place, trouble spot, detect again the whole word situation of this process by PLC, find out first assignment and be the position of " 1 ", namely find out this interlocking condition, find out the place, trouble spot;
(4) after fault solved, coke-oven locomotive continued operation, and returns step (three) and carry out cycle criterion.
2. coke-oven locomotive as claimed in claim 1 moves PLC interlock failure method for quickly identifying automatically, it is characterized in that: in the described step (four), described PLC is provided with one and executes step, and described compulsory execution step is original assignment to be forced assignment for the position of " 1 " be the step of " 0 ".
3. coke-oven locomotive as claimed in claim 1 or 2 moves 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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