CN103197162A - Multiple switch parameter fault diagnosis method based on template matching - Google Patents
Multiple switch parameter fault diagnosis method based on template matching Download PDFInfo
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- CN103197162A CN103197162A CN2012100004003A CN201210000400A CN103197162A CN 103197162 A CN103197162 A CN 103197162A CN 2012100004003 A CN2012100004003 A CN 2012100004003A CN 201210000400 A CN201210000400 A CN 201210000400A CN 103197162 A CN103197162 A CN 103197162A
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Abstract
The invention relates to a multiple switch parameter fault diagnosis method based on template matching. A plurality of switch state parameters when a detected device runs normally are used for generating a state conversion table independent of time and a standard timing sequence conversion table which are divided into a state template and a timing sequence template; switch state parameters when the device runs actually are measured in real time, and an actual state conversion table and an actual timing sequence conversion table are generated; and the actual state conversion table is compared with the state template, the actual timing sequence conversion table is compared with the timing sequence template, state error or timing sequence error is obtained, and then a fault happening to the device is judged. Compared with the prior art, the method not only changes the current situation that fault diagnosis of two types of the switch parameters can only be carried out one to one, but also can solve problems occurring in the state combination of a plurality of switch parameter signals of various devices which are higher and higher in integration level, wherein flexible generation can be realized according to actual devices, has a wide range of application, and is particularly suitable for being used by front-line operators.
Description
Technical field
The present invention relates to fault diagnosis technology, particularly a kind of many switches parameter method for diagnosing faults based on template matches.
Background technology
In fields such as commercial production, space flight and national defence, along with many equipment progressively tend to maximization and complicated, the possibility that fault takes place also increases thereupon.The fault of the state of monitoring equipment operation, diagnostic device generation rapidly and accurately is the key point that support equipment safe operation, assurance task are finished smoothly effectively.
State parameter when existing monitoring method is generally moved by real-time measuring equipment is analyzed the apparatus characteristic information that wherein comprises, and then according to certain Fault Diagnosis Strategy, the state that judgment device is current is to realize the fault diagnosis to equipment.
Switching value is the main type in the equipment state parameter, and it refers to only to have out in the equipment and close or the parametric type of 1 and 0 two states, as the output of limit switch, rotary switch, temperature switch, various button, relay.Switching value can be divided into following two kinds: break-make type (passive) switching value, the various switches of reflection controlled device and the switching state of contact; Level type (active) switching value, the height state of reflection logic level.But, in the prior art, can only be man-to-man carrying out for the fault diagnosis of these two types of switching values, and the problem that occurs for the combinations of states of a plurality of switching value signals of the more and more higher various device of integrated level be helpless.
Summary of the invention
At above-mentioned the problems of the prior art, the objective of the invention is to a plurality of switching value information by equipment, a kind of method for diagnosing faults of the many switches parameter based on template matches is provided.
Now design of the present invention and technical solution are described below:
The combinations of states of a plurality of switching value signals has directly reflected duty and the failure message of equipment, and the switching value signal is easy to measure in addition, and therefore the accuracy height becomes the important evidence in the Equipment Inspection diagnosis.The method for diagnosing faults of a kind of many switches parameter based on template matches of the present invention is characterized in that: may further comprise the steps:
Step 1: by the principle of work of analytical equipment, the change procedure of a plurality of switching values when perhaps normally moving by actual measurement equipment, perhaps two kinds of methods are combined, obtain the switching value state variation data under the equipment normal running (operation) conditions, obtain normal switching value state variation sequential chart;
Step 2: utilize normal switching value state variation sequential chart to carry out structure of transvers plate, generate state transition table and the sequential conversion table of standard, i.e. state template and sequential template;
Step 3: the real-time switching value delta data during the measuring equipment actual motion, obtain actual state variation sequential chart, generate actual state transition table and sequential conversion table;
Step 4: the state transition table of reality and state template are carried out the state comparison, and the sequential conversion table of reality is carried out duration with the sequential template compare, draw state error or time, and then the fault that takes place of the equipment of judging.
Step 5: according to the fault that step 4 is judged, further carry out the diagnosis of fault type.
The present invention further provides a kind of method for diagnosing faults of the many switches parameter based on template matches, it is characterized in that: the acquisition methods of switching value state variation data is specially in the described step 1:
Step 1.1: by the analytical equipment principle of work, state and the switching time of switching value when the equipment that draws normally moves; Or state and switching time of switching value when utilizing the equipment monitoring system measuring equipment normally to move: or two kinds of methods are combined.
Step 1.2: establishing equipment under test has n switching value, the state k of each switching value
iExpression, k
iBe defined as follows:
Step 1.3: the synthetic set K of the state group of n switching value, K={k
1, k
2..., k
n; K as one on the whole, then a certain value representative equipment of K is in a specific state; When the state of certain or some switching values at a time changes, claim that conversion has taken place equipment state.Suppose that initial time is t
0, this moment, facility switching amount state was
Wherein subscript T representing matrix or the vector transposition; State conversion for the first time occurs in t
1Constantly, Ci Shi facility switching amount state is
And the like, the conversion of q next state occurs in t
qConstantly, Ci Shi facility switching amount state is
Ordered sets T when all switching value conversions constantly constitute one in the equipment normal course of operation, T={t
1, t
2..., t
q.
The present invention further provides a kind of method for diagnosing faults of the many switches parameter based on template matches, it is characterized in that: the building method of the state template in the described step 2 and sequential template is specially:
Step 2.1: the building method of state template: all switching value state sets in the equipment normal course of operation are arranged, obtained the matrix [K of a n * (q+1)
0, K
1..., K
q], wherein (q+1) refers to comprise original state and the conversion of q next state, the state transition table of the corresponding standard of the numerical value of each element, i.e. state template in this matrix;
Step 2.2: sequential structure of transvers plate method:: the initial time t when utilizing equipment normally to move
0With the time ordered sets T obtain the duration of each next state conversion of equipment, state is changed duration carries out one dimension and arrange, generate the sequential conversion table of standard, i.e. the sequential template.The present invention further provides a kind of method for diagnosing faults of the many switches parameter based on template matches, it is characterized in that: in the described step 3 the generation method of state transition table and sequential conversion table with step 1 and step 2, the measured data when the on off state delta data that different is in this step is the equipment operation.
The present invention further provides a kind of method for diagnosing faults of the many switches parameter based on template matches, it is characterized in that: the diagnosis of the fault type in the described step 5 " draw state error or time; and then the fault that takes place of the equipment of judging ", its fault can be divided into three major types to be diagnosed, and below is three class faults and corresponding diagnostic method:
1, the state conversion times of equipment operation breaks down.Virtual condition conversion table and the state template of equipment running process are carried out the conversion times comparison, if unnecessary state conversion, has appearred more than the conversion times of state template in the actual converted number of times in the devices illustrated operational process; If the actual converted number of times is less than the conversion times of state template, due state conversion does not appear in devices illustrated operational process middle part switch-dividing.When conversion times not simultaneously, can find inconsistent place fast by template translation contrast, find out trouble unit rapidly;
2, the state conversion times of equipment operation is correct, but transformation result breaks down.On the virtual condition conversion table of the equipment running process basis identical with the conversion times of state template, it is right that virtual condition conversion table and state template are carried out numeric ratio, if numerical value does not match, then an explanation corresponding switching value that do not match breaks down;
3, the state conversion of equipment operation is correct, but the sequential conversion is broken down.On the correct basis of equipment state conversion, it is right that the actual sequential conversion table of equipment entire work process and sequential template are carried out numeric ratio, if the conversion of the state in the actual sequential conversion table moment mates constantly with the conversion in the sequential template, show that the equipment operation is normal; Otherwise devices illustrated breaks down, and at this moment, can determine the time of occurrence of equipment failure constantly fast by the conversion that equipment breaks down, and then analyze the origin cause of formation of determining fault.
Description of drawings
Fig. 1 fault diagnosis principle of the present invention and method figure.
Fig. 2 switching value state variation sequential chart.
Fig. 3 state template.
Fig. 4 sequential template.
The switching value state variation sequential chart of the normal operation of Fig. 5 application example equipment of the present invention
The state template of the normal operation of Fig. 6 application example equipment of the present invention
The sequential template of the normal operation of Fig. 7 application example equipment of the present invention
The switching value state variation sequential chart of Fig. 8 application example state of the present invention conversion times fault
The state transition table of Fig. 9 application example state of the present invention conversion times fault
The sequential conversion table of Figure 10 application example state of the present invention conversion times fault
The switching value state variation sequential chart of Figure 11 application example state of the present invention transformation result fault
The state transition table of Figure 12 application example state of the present invention transformation result fault
The sequential conversion table of Figure 13 application example state of the present invention transformation result fault
Embodiment
The present invention will be further described in detail below in conjunction with drawings and Examples.
As shown in Figure 1, at first utilize the normal switching value state variation of equipment data to obtain normal switching value state variation sequential chart, carry out structure of transvers plate then, state template and sequential template when generating the equipment normal condition, this is the basis of diagnosis; Utilize the switching value state variation data of real-time measuring equipment operation to generate actual state transition table and sequential conversion table; Compare the state of judgment device at last by state comparison and duration, when the state transition table of reality and state template go out that present condition does not match or sequential conversion table and sequential template when sequential occurring and not matching, can judge that a corresponding measured data that do not match is fault data, equipment is in malfunction.
As shown in Figure 2, switching value state variation sequential chart: vertically represent n switching value of equipment under test from top to bottom successively, the two states of numerical value 1 and 0 representation switch amount; Be time shaft laterally, indicate the q next state conversion that takes place in the equipment running process.
As shown in Figure 3, state template: be two-dimentional unit grids, vertically represent n switching value from top to bottom successively, laterally represent each next state conversion, the numerical value 1 in the unit lattice and 0 represents the two states of switch between twice adjacent conversion.
As shown in Figure 4, the sequential template: be one dimension rectangle grid, the numerical value in the pane is directly proportional with the width of pane, represents the time interval between the adjacent two next states conversion.
Embodiment
Equipment in the present embodiment has 3 switching values, i.e. n=3, specifically implementation step:
Step 1: by the principle of work of analytical equipment, the switching value state variation sequential chart when acquisition equipment normally moves, as shown in Figure 5;
Step 2: occur 7 next states conversions as shown in Figure 5 in the equipment normal course of operation altogether, i.e. q=7, original state set K
0={ 0,0,1}
T, the switching value state set after each time conversion is respectively K
1={ 1,1,1}
T, K
2={ 0,1,0}
T, K
3={ 0,0,0}
T, K
4={ 1,0,0}
T, K
5={ 0,1,1}
T, K
6={ 1,0,0}
T, K
7={ 1,1,0}
TOrdered sets T:{3 when the conversion of all switching value states constitutes constantly in the equipment normal course of operation, 5,7,9,11,16,20}, and t
0=0, the interval duration of state conversion is respectively 3,2,2,2,2,5,4.Switching value state set when equipment is normally moved is arranged, and obtains one 3 * (7+1) matrix [K
0, K
1..., K
7], i.e. state template (Fig. 6); State conversion interval duration is carried out one dimension arrange, generate the sequential conversion table of standard, i.e. sequential template (Fig. 7);
Step 3: the switching value state variation data of measuring equipment operation in real time, the switching value state variation sequential chart when obtaining the equipment actual motion, as shown in Figure 8;
Step 4: state transition table (Fig. 9) and sequential conversion table (Figure 10) when obtaining the equipment operation with step 2;
Step 5: state transition table (Fig. 9) and the state template (Fig. 6) of reality are carried out conversion times (being horizontal unit lattice number) comparison, the discovery conversion times is incorrect, actual lattice number is less than template lattice number, shows to have occurred first kind fault in the equipment running process, i.e. state conversion times fault.By template translation contrast, find switch k
2State value and state template do not match, show equipment when operation switch k
2Break down.
Step 6: facility switching k
2Fault get rid of after, remeasure the switching value state variation data of equipment operation, the switching value state variation sequential chart the during operation of acquisition equipment, as shown in figure 11;
Step 7: with step 2, state transition table (Figure 12) and sequential conversion table (Figure 13) when obtaining the equipment operation;
Step 8: state transition table (Figure 12) and the state template (Fig. 6) of reality are carried out conversion times (being horizontal unit lattice number) comparison, and the Discovery Status conversion times is correct, gets rid of first kind fault.It is right virtual condition conversion table (Figure 12) and state template (Fig. 6) to be carried out numeric ratio again, finds switch k
1Corresponding status values and state template do not match, and switch k then is described
1The second class fault has appearred, i.e. state transformation result fault;
Step 9: to the switch k of equipment
1Carry out fault and get rid of, the switching value state variation data of measuring equipment operation again, the switching value state variation sequential chart the during operation of acquisition equipment;
Step 10: state transition table and sequential conversion table when obtaining the equipment operation with step 2;
Step 11: state transition table and the state template (Fig. 6) of reality are compared, and Discovery Status conversion times and state transformation result are all correct, show that the state conversion of equipment operation is correct, get rid of one, two class faults.It is right that the sequential conversion table of equipment entire work process and sequential template (Fig. 7) are carried out numeric ratio, the interval duration of finding the conversion of the 6th next state is respectively 5 and 1, big deviation appears in the sequential conversion, and the 3rd class fault, i.e. state conversion timing sequence fault take place devices illustrated.
Claims (8)
1. many switches parameter method for diagnosing faults based on template matches is characterized in that: may further comprise the steps:
Step 1: by the principle of work of analytical equipment, the change procedure of a plurality of switching values when perhaps normally moving by actual measurement equipment, perhaps two kinds of methods are combined, obtain the switching value state variation data under the equipment normal running (operation) conditions, obtain normal switching value state variation sequential chart;
Step 2: utilize normal switching value state variation sequential chart to carry out structure of transvers plate, generate state transition table and the sequential conversion table of standard, i.e. state template and sequential template;
Step 3: the real-time switching value delta data during the measuring equipment actual motion, obtain actual state variation sequential chart, generate actual state transition table and sequential conversion table;
Step 4: the state transition table of reality and state template are carried out the state comparison, and the sequential conversion table of reality is carried out duration with the sequential template compare, draw state error or time, and then the fault that takes place of the equipment of judging.
Step 5: according to the fault that step 4 is judged, further carry out the diagnosis of fault type.
2. the method for diagnosing faults of a kind of many switches parameter based on template matches according to claim 1, it is characterized in that: the acquisition methods of switching value state variation data is specially in the described step 1:
Step 1.1: by the analytical equipment principle of work, state and the switching time of switching value or the state of switching value and switching time or two kinds of methods are combined when utilizing the equipment monitoring system measuring equipment normally to move when the equipment that draws normally moves;
Step 1.2: establishing equipment under test has n switching value, the state k of each switching value
iExpression, k
iBe defined as follows:
Step 1.3: the synthetic set K of the state group of n switching value, K={k
1, k
2..., k
n; K as one on the whole, then a certain value representative equipment of K is in a specific state; When the state of certain or some switching values at a time changes, claim that conversion has taken place equipment state.Suppose that initial time is t
0, this moment, facility switching amount state was
Wherein subscript T representing matrix or the vector transposition; State conversion for the first time occurs in t
1Constantly, Ci Shi facility switching amount state is
And the like, the conversion of q next state occurs in t
qConstantly, Ci Shi facility switching amount state is
Ordered sets T when all switching value conversions constantly constitute one in the equipment normal course of operation, T={t
1, t
2..., t
q.
3. the method for diagnosing faults of a kind of many switches parameter based on template matches according to claim 1, it is characterized in that: the building method of the state template in the described step 2 and sequential template is specially:
Step 2.1: the building method of state template: all switching value state sets in the equipment normal course of operation are arranged, obtained the matrix [K of a n * (q+1)
0, K
1..., K
q], wherein (q+1) refers to comprise original state and the conversion of q next state, the state transition table of the corresponding standard of the numerical value of each element, i.e. state template in this matrix;
Step 2.2: sequential structure of transvers plate method:: the initial time t when utilizing equipment normally to move
0With the time ordered sets T obtain the duration of each next state conversion of equipment, state is changed duration carries out one dimension and arrange, generate the sequential conversion table of standard, i.e. the sequential template.
4. according to the method for diagnosing faults of the arbitrary described a kind of many switches parameter based on template matches of claim 1～3, it is characterized in that: in the described step 3 the generation method of state transition table and sequential conversion table with step 1 and step 2, the measured data when the on off state delta data that different is in this step is the equipment operation.
5. the method for diagnosing faults of a kind of many switches parameter based on template matches according to claim 1, it is characterized in that: the diagnosis of the fault type in the described step 5 is specially: the state conversion times of (1) equipment operation breaks down, the state conversion times of (2) equipment operation is correct, but transformation result breaks down, the state conversion of (3) equipment operation is correct, but the sequential conversion is broken down.
6. the method for diagnosing faults of a kind of many switches parameter based on template matches according to claim 5, it is characterized in that: the concrete diagnostic method of described fault (1) is: virtual condition conversion table and the state template of equipment running process are carried out the conversion times comparison, if unnecessary state conversion, has appearred more than the conversion times of state template in the actual converted number of times in the devices illustrated operational process; If the actual converted number of times is less than the conversion times of state template, due state conversion does not appear in devices illustrated operational process middle part switch-dividing; When conversion times not simultaneously, can find inconsistent place fast by template translation contrast, find out trouble unit rapidly.
7. the method for diagnosing faults of a kind of many switches parameter based on template matches according to claim 5, it is characterized in that: the concrete diagnostic method of described fault (2) is: on the virtual condition conversion table of the equipment running process basis identical with the conversion times of state template, it is right that virtual condition conversion table and state template are carried out numeric ratio, if numerical value does not match, illustrate that then a corresponding switching value that do not match breaks down.
8. the method for diagnosing faults of a kind of many switches parameter based on template matches according to claim 5, it is characterized in that: the concrete diagnostic method of described fault (3) is: on the correct basis of equipment state conversion, it is right that the actual sequential conversion table of equipment entire work process and sequential template are carried out numeric ratio, if the conversion of the state in the actual sequential conversion table moment mates constantly with the conversion in the sequential template, show that the equipment operation is normal; Otherwise devices illustrated breaks down, and at this moment, can determine the time of occurrence of equipment failure constantly fast by the conversion that equipment breaks down, and then analyze the origin cause of formation of determining fault.
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|---|---|---|---|
| CN201210000400.3A CN103197162B (en) | 2012-01-04 | 2012-01-04 | A kind of Multi-Switch parameter method for diagnosing faults based on template matches |
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| CN201210000400.3A CN103197162B (en) | 2012-01-04 | 2012-01-04 | A kind of Multi-Switch parameter method for diagnosing faults based on template matches |
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| CN103197162B CN103197162B (en) | 2016-02-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717877A (en) * | 2014-12-02 | 2016-06-29 | 南京南瑞继保电气有限公司 | Method and device for verifying operating condition of pump storage group based on sequence control process |
| CN110046419A (en) * | 2019-04-11 | 2019-07-23 | 天津工业大学 | A kind of dynamic equipment fault type inline diagnosis method based on CTMA-DL algorithm |
| CN113961258A (en) * | 2021-10-30 | 2022-01-21 | 重庆长安汽车股份有限公司 | Method and system for recognizing abnormal automobile state based on time sequence transfer and storage medium |
| CN114137404A (en) * | 2021-11-23 | 2022-03-04 | 深圳供电局有限公司 | Maintenance method and system for voltage regulating switch of power transformer |
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| CN1794242A (en) * | 2005-09-09 | 2006-06-28 | 浙江大学 | Failure diagnosis data collection and publishing method |
| CN101097653A (en) * | 2007-07-17 | 2008-01-02 | 东北大学 | Electric energy quality and electrical power system malfunction detection wave recording device and method |
| CN102183720A (en) * | 2011-03-11 | 2011-09-14 | 浙江网新中控创新技术研究开发有限公司 | Safety digital quantity acquiring circuit and realizing method thereof |
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2012
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| CN1794242A (en) * | 2005-09-09 | 2006-06-28 | 浙江大学 | Failure diagnosis data collection and publishing method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717877A (en) * | 2014-12-02 | 2016-06-29 | 南京南瑞继保电气有限公司 | Method and device for verifying operating condition of pump storage group based on sequence control process |
| CN110046419A (en) * | 2019-04-11 | 2019-07-23 | 天津工业大学 | A kind of dynamic equipment fault type inline diagnosis method based on CTMA-DL algorithm |
| CN110046419B (en) * | 2019-04-11 | 2023-04-18 | 天津工业大学 | CTMA-DL algorithm-based dynamic equipment fault type online diagnosis method |
| CN113961258A (en) * | 2021-10-30 | 2022-01-21 | 重庆长安汽车股份有限公司 | Method and system for recognizing abnormal automobile state based on time sequence transfer and storage medium |
| CN113961258B (en) * | 2021-10-30 | 2023-06-30 | 重庆长安汽车股份有限公司 | Automobile state anomaly identification method, system and storage medium based on time sequence transfer |
| CN114137404A (en) * | 2021-11-23 | 2022-03-04 | 深圳供电局有限公司 | Maintenance method and system for voltage regulating switch of power transformer |
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| CN103197162B (en) | 2016-02-17 |
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