CN114789200B - Method and system for fault self-diagnosis and recording of cold rolling unit - Google Patents
Method and system for fault self-diagnosis and recording of cold rolling unit Download PDFInfo
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- CN114789200B CN114789200B CN202111196031.5A CN202111196031A CN114789200B CN 114789200 B CN114789200 B CN 114789200B CN 202111196031 A CN202111196031 A CN 202111196031A CN 114789200 B CN114789200 B CN 114789200B
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- 238000005097 cold rolling Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004092 self-diagnosis Methods 0.000 title claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 14
- 230000003111 delayed effect Effects 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention discloses a fault self-diagnosis and recording method of a cold rolling unit, which comprises the following steps: obtaining stop signals and manual input serial numbers of all cold rolling units; converting each group of stop signals into stop state words and recording; a word has two bytes, one byte has eight bits, 16 bits altogether each correspond to a stop signal, each state word corresponds to a serial number and compares the stop state word with a manual input serial number, if the state word is consistent with the manual input serial number, the current serial number and the state are output, the corresponding record times are called according to the manual input query serial number, the machine faults displayed by the stop state word in each group recorded at the present time are output and checked, the problem of the faults can be visually found, and particularly, the problem of stopping caused by signal flashover for a few milliseconds can still be recorded and inquired.
Description
Technical Field
The invention relates to the technical field of cold rolling units, in particular to a method and a system for fault self-diagnosis and recording of a cold rolling unit.
Background
In cold rolling unit control, because the degree of automation is high, rolling mill protection chain condition signals are many to the reason such as ageing of rolling mill impurity emulsion and equipment line, signal line trouble often appear certain signal and do not have the input signal, lead to whole unit shut down, perhaps because of certain signal is flashed, cause rolling mill to slow down and stop soon, equipment personnel can not see the trouble through the operation picture is audio-visual to be shown, can only troubleshoot one by one, has caused long-time shut down like this, has seriously influenced rolling mill's production efficiency.
Disclosure of Invention
Therefore, the invention aims to provide a method and a system for self-diagnosing and recording faults of a cold rolling mill unit, which are characterized in that by acquiring and storing a shutdown signal and combining the shutdown signal with a manual input signal, the faults can be directly checked, the operation is simple, the use is convenient, the problem of the faults can be intuitively found, and particularly, the inquiry can still be recorded aiming at shutdown caused by signal flashover for a few milliseconds.
In order to achieve the above object, the method for self-diagnosing and recording faults of a cold rolling mill set of the present invention comprises the following steps:
s1, acquiring stop signals of all cold rolling units and manually input inquiry serial numbers;
s2, grouping all the stop signals according to categories, correspondingly converting the 16-bit stop signals in each group into 1 stop state word and recording;
s3, according to the manually input inquiry sequence numbers, the corresponding recording times are called, and machine faults displayed by the shutdown state words in all the groups recorded at the time are output and checked.
Further preferably, the types of the stop signals in the step S2 are classified according to the parts of the cold rolling unit equipment and the types of the cold rolling unit equipment, the 16-bit stop signals in each group are correspondingly converted into 1 stop state word and recorded, and the stop signals are triggered according to the state signals of the cold rolling mill; the method specifically comprises the following steps:
and performing OR logic operation on various state signals of the cold rolling mill, and triggering and recording a 16-bit stop signal in each group at the moment when any one state signal is output to be 1 or the logic operation result is 1, wherein the state signals of the cold rolling mill corresponding to the converted 1-stop state word comprise three signals of quick stop, quick stop and tight stop.
Further preferably, the method further comprises the step of inquiring the detection status word through manual input of the sequence number, outputting a corresponding detection status word if the manual input sequence number is the same as the detection status word sequence number, converting the detection status word into a detection bit signal, calling each device input signal according to the detection signal, and judging whether the device is faulty according to the device input signal.
Further preferably, the method further comprises the step of obtaining a real-time picture signal of the cold rolling mill unit, wherein the real-time picture signal is used for assisting an operator in judging faults and forming a manual input serial number.
The invention also provides a fault self-diagnosis and recording system of the cold rolling unit, which comprises a shutdown signal acquisition module,
The device comprises an input signal acquisition module, a signal conversion module and a signal comparison module;
the shutdown signal acquisition module is used for acquiring shutdown signals of all cold rolling units;
the input signal acquisition module is used for acquiring a manual input inquiry sequence number;
the signal conversion module is used for grouping all the stop signals according to the category, correspondingly converting the 16-bit stop signals in each group into 1 stop state word and recording the 1 stop state word;
and the signal comparison module is used for calling the corresponding record times according to the manually input query sequence numbers and outputting and checking the machine faults displayed by the shutdown state words in each group of the record. Still preferably, the signal conversion module further includes a signal triggering module, where the signal triggering module is configured to perform an or logic operation on various status signals of the cold rolling mill, and when any one status signal is output as 1, or the logic operation result is 1, trigger and record a 16-bit shutdown signal in each group at this time, where the status signals of the cold rolling mill corresponding to the converted 1-shutdown status word include three signals including a fast stop, an emergency stop, and a tight stop.
Further, the input signal acquisition module further comprises the step of acquiring picture input signals of the cold rolling mill unit, wherein the real-time picture signals are used for assisting operators in judging faults and forming manual input serial numbers
Further preferably, the cold rolling machine further comprises a controllable digital storage module, wherein the controllable digital storage module is used for storing and sending a shutdown signal of the cold rolling machine set to a shutdown state word converted by the signal conversion module.
Further preferably, the cold rolling machine further comprises an electrifying delay module, wherein the electrifying delay module is used for delaying the received shutdown signal of the cold rolling machine set according to a preset delay time and then sending the delayed shutdown signal to the control digital storage module for storage.
Compared with the prior art, the fault self-diagnosis and recording method and system for the cold rolling unit have the following advantages:
1. according to the invention, by acquiring and storing the shutdown signal and combining the shutdown signal with the manual input signal, the fault is directly checked, the operation is simple, the use is convenient, the problem of the fault can be intuitively checked, and particularly, the inquiry can still be recorded aiming at shutdown caused by signal flash for a few milliseconds.
2. The method and the system for self-diagnosing and recording the faults of the cold rolling mill unit can convert the manual input serial numbers into the detection state words, convert the detection state words into the detection signals, call the input signals of all equipment according to the detection signals, judge whether the equipment has faults according to the input signals of the equipment, and enable equipment personnel to visually see fault display by combining operation pictures and output signals, so that the fault checking efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a flow chart of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
As shown in fig. 2, the method for self-diagnosing and recording faults of a cold rolling unit provided by an embodiment of the invention includes the following steps:
s1, acquiring stop signals of all cold rolling units and manually input inquiry serial numbers;
s2, grouping all the stop signals according to categories, correspondingly converting the 16-bit stop signals in each group into 1 stop state word and recording; further preferably, in S1, the stop signals include three status signals of fast stop, fast stop and fast stop of the cold rolling mill unit, and further include status signals of other equipment parts, when any one of the three status signals of fast stop, fast stop and fast stop of the cold rolling mill unit appears after the cold rolling mill unit is divided into groups according to the parts of the cold rolling mill unit and the types of the cold rolling mill unit, the status signals of the other equipment parts in each group are triggered, and the status signals are converted into status words (word) by 16 bit signals. The triggering mechanism is as follows: and performing OR logic operation on various state signals of the cold rolling mill, and triggering and recording a 16-bit stop signal in each group at the moment when any one state signal is output to be 1 or the logic operation result is 1, wherein the stop signal corresponds to 1 converted stop state words.
For example, the diagnostic faults are divided into 23 groups according to the location and class of the device, a 16-bit device signal is acquired in each group, and when any one of three shutdown signals occurs, the 16-bit signal in each of the 23 groups is triggered to be converted into 1 status word, for example: in group 1, the 16-bit device signals respectively include:
the coil assisting side steel coil is overweight, the roll gap is zero-correcting and finished, the coil assisting side coil diameter exceeds the standard, the coiling side coil diameter exceeds the standard, the main transmission of the flying shears is stopped, the flying shears are at the initial position, the thickness gauge behind 5 frames is normal, the automatic step of coiling machine rotation is normal, the pickling stop request is carried out, the pickling quick stop request is carried out, the tension of an outlet loop is opened, the outlet loop rolling machine is stopped and limited, the injection of the emulsion of 1 frame is normal, the injection of the emulsion of 2 frames is normal, the injection of the emulsion of 3 frames is normal, and the injection of the emulsion of 4 frames is normal. When the equipment is stopped and at least one bit in the 16-bit equipment signals of the 23 groups is abnormal, the state word 1 corresponding to the position represents the group 1 and is highlighted.
S3, according to the manually input inquiry sequence numbers, the corresponding recording times are called, and machine faults displayed by the shutdown state words in all the groups recorded at the time are output and checked.
The method further comprises the step of obtaining real-time picture signals of the cold rolling mill unit, wherein the real-time picture signals are used for assisting operators in judging faults and forming manual input serial numbers. Further, the method further comprises the steps of obtaining a shutdown state word (word) through a manual input sequence number, converting the shutdown state word into a bit signal, calling each equipment input signal according to the detection signal, and judging whether the equipment fails according to the equipment input signal. And combining the input signals of the equipment in a real-time picture to judge whether the equipment fails.
As shown in FIG. 1, the invention also provides a system for self-diagnosing and recording faults of the cold rolling mill unit, which is used for implementing the method and comprises a shutdown signal acquisition module, an input signal acquisition module, a signal conversion module and a signal comparison module; the shutdown signal acquisition module is used for acquiring shutdown signals of all cold rolling units;
the input signal acquisition module is used for acquiring a manual input inquiry sequence number;
the signal conversion module is used for grouping all the stop signals according to the category, correspondingly converting the 16-bit stop signals in each group into 1 stop state word and recording the 1 stop state word;
and the signal comparison module is used for calling the corresponding record times according to the manually input query sequence numbers and outputting and checking the machine faults displayed by the shutdown state words in each group of the record.
The signal conversion module further comprises a signal triggering module, wherein the signal triggering module is used for carrying out OR logic operation on various state signals of the cold rolling mill, when any one state signal is output to be 1, or the logic operation result is 1, the signal triggering module triggers and records a 16-bit stop signal in each group at the moment, and the state signals of the cold rolling mill corresponding to the converted 1-stop state word comprise three signals including quick stop, emergency stop and tight stop. Further preferably, the input signal acquisition module further comprises a step of acquiring a real-time picture of the cold rolling mill unit, and the real-time picture signal is used for assisting an operator in judging faults to form a manual input serial number.
Further preferably, the cold rolling machine further comprises a controllable digital storage module, wherein the controllable digital storage module is used for storing and sending a shutdown signal of the cold rolling machine set to a shutdown state word converted by the signal conversion module.
Further preferably, the cold rolling machine further comprises an electrifying delay module, wherein the electrifying delay module is used for delaying the received shutdown signal of the cold rolling machine set according to a preset delay time and then sending the delayed shutdown signal to the control digital storage module for storage.
In a commonly applied embodiment of the method and the system, the method for online diagnosis and recording of faults of the cold rolling mill unit comprises a TDC, a shutdown signal acquisition module, a B_W signal conversion module, an ETE power-on delay module, a CNM_I controllable digital storage module, an OR function block, a NOP1IC function block, a W_B signal conversion module, an EQ_R signal comparison module and a NSW4_I digital signal conversion module.
A. The shutdown signal acquisition module comprises three signals of fast shutdown, emergency shutdown and tight shutdown, and is connected with an OR functional block to perform OR gate logic operation, and each group is formed by 16 bit signals and is converted into a state word. B. The data scanning is 20ms in each period, step A outputs 1 signal to ETE power-on delay module and connects CNM_I controllable digital storage module pin, when there is signal 1, it will output the stop state word after the conversion of 16 system stop signals obtained by B_W converter to NOP1IC function block, each NOP1IC function block will connect a W_B signal conversion module, every time there is step A to output 1 signal will trigger NOP1IC function block to record, current stop state word record in W_B function block, at the same time stop state word output to NSW4_I digital signal conversion module, NSW4_I function block is digital conversion module, when WINCC picture input stop sequence number signal, the sequence number signal is connected to EQ_R signal comparison module, if yes, it will output current sequence number, at the same time the EQ_R signal comparison module is connected to NSW4_I digital signal conversion module, according to the signal NSW4_I signal output corresponding to the signal output 4_I digital signal conversion module, the signal is connected to the signal comparison module of 16 bit of the signal corresponding to the signal of the signal bridge between the signal and the signal of the signal converter, the signal of the signal converter is the signal of the signal bridge gate is the signal controller of the signal controller.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (8)
1. The fault self-diagnosis and recording method for the cold rolling unit is characterized by comprising the following steps of:
s1, acquiring stop signals of all cold rolling units and manually input inquiry serial numbers;
s2, grouping all the stop signals according to categories, correspondingly converting the 16-bit stop signals in each group into 1 stop state word and recording; comprising the following steps: performing OR logic operation on various state signals of the cold rolling mill, and triggering and recording a 16-bit stop signal in each group at the moment when any one state signal is output to be 1 or the logic operation result is 1, wherein the stop signal corresponds to 1 converted stop state word; the state signals of the cold rolling mill comprise three signals of quick stop, emergency stop and tight stop;
s3, according to the manually input inquiry sequence numbers, the corresponding recording times are called, and machine faults displayed by the shutdown state words in all the groups recorded at the time are output and checked.
2. The method according to claim 1, wherein the type of the stop signal is classified according to the location of the cold-rolling mill unit and the type of the cold-rolling mill unit in S2.
3. The method for self-diagnosing and recording faults of the cold rolling mill set according to claim 1, further comprising inquiring the detection status word by manually inputting the serial number, outputting a corresponding detection status word if the manual input serial number is the same as the serial number of the detection status word, converting the detection status word into a detection bit signal, calling each equipment input signal according to the detection signal, and judging whether the equipment has faults according to the equipment input signal.
4. The method for self-diagnosing and recording faults of a cold rolling mill according to claim 1, further comprising the step of obtaining real-time picture signals of the cold rolling mill, wherein the real-time picture signals are used for assisting an operator in judging faults and forming manual input serial numbers.
5. The system for self-diagnosing and recording faults of the cold rolling unit is characterized by comprising a shutdown signal acquisition module, an input signal acquisition module, a signal conversion module and a signal comparison module;
the shutdown signal acquisition module is used for acquiring shutdown signals of all cold rolling units;
the input signal acquisition module is used for acquiring a manual input inquiry sequence number;
the signal conversion module is used for grouping all the stop signals according to the category, correspondingly converting the 16-bit stop signals in each group into 1 stop state word and recording the 1 stop state word; the signal conversion module further comprises a signal triggering module, wherein the signal triggering module is used for carrying out OR logic operation on various state signals of the cold rolling mill, when any one state signal is output to be 1, or the logic operation result is 1, the signal triggering module is used for triggering and recording a 16-bit stop signal in each group at the moment, and the state signals of the cold rolling mill corresponding to the converted 1-stop state word comprise three signals, namely a fast stop signal, an emergency stop signal and an emergency stop signal;
and the signal comparison module is used for calling the corresponding record times according to the manually input query sequence numbers and outputting and checking the machine faults displayed by the shutdown state words in each group of the record.
6. The system for self-diagnosing and recording faults of a cold rolling mill according to claim 5, wherein the input signal acquisition module further comprises an acquisition module for acquiring real-time pictures of the cold rolling mill, and the real-time picture signals are used for assisting an operator in judging faults and forming manual input serial numbers.
7. The system for self-diagnosing and recording faults of a cold rolling mill set according to claim 5, further comprising a controllable digital storage module, wherein the controllable digital storage module is used for storing and sending a shutdown signal of the cold rolling mill set to a shutdown status word converted by the signal conversion module.
8. The system for self-diagnosing and recording faults of the cold rolling mill set according to claim 7, further comprising an electrifying delay module, wherein the electrifying delay module is used for delaying a received shutdown signal of the cold rolling mill set according to a preset delay time and then sending the delayed shutdown signal to the control digital storage module for storage.
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| 冷轧厂使用PDA系统分析S6轧机压下系统故障实例;任巍;;企业技术开发(第21期) * |
| 过程数据采集与分析系统在冷连轧机组中的应用;侯永刚;秦大伟;费静;张岩;刘宝权;宋君;;冶金自动化(第04期) * |
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| CN114789200A (en) | 2022-07-26 |
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