CN202226500U - Mine hoist fault diagnosis system based on expert system - Google Patents
Mine hoist fault diagnosis system based on expert system Download PDFInfo
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- CN202226500U CN202226500U CN2011203020140U CN201120302014U CN202226500U CN 202226500 U CN202226500 U CN 202226500U CN 2011203020140 U CN2011203020140 U CN 2011203020140U CN 201120302014 U CN201120302014 U CN 201120302014U CN 202226500 U CN202226500 U CN 202226500U
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Abstract
The utility model provides a mine hoist fault diagnosis system based on an expert system which comprises a knowledge base, an inference machine, a decoder and a programmable interface chip, wherein the knowledge base is used for storing fault information and corresponding action signals, the inference machine is used for comparing the acquired real-time working state information of a direct-current motor with the information in the knowledge base and judging if the hoist has a fault, the inference machine further comprises fourteen common interface chips which are all connected with a fault information source, the decoder is respectively connected with the fourteen common interface chips, the programmable interface chip is respectively connected with the decoder, the common interface chips and the knowledge base, is used for comparing the working state information transmitted from the common interface chips with the information in the knowledge base and acquiring the action signals, and controls gating states of the fourteen common interface chips by the decoder. The mine hoist fault diagnosis system based on the expert system provided by the utility model is high in reliability, can effectively prolong the mechanical life and can raise the productivity.
Description
Technical field
The utility model relates to a kind of mine hoist fault localization system, particularly a kind of mine hoist fault localization system based on expert system.
Background technology
Mine hoist equipment is the key equipment during mine is produced, can be safely, economic, operation and its rational use efficiently, and meticulous Maintenance and Repair, the Monitoring and Controlling of science are closely bound up.The technical merit of existing colliery gig is uneven, and the gig fault cause is varied, in case et out of order is difficult in time make protection action accurately.
Early stage trouble-shooter utilizes relay circuit to realize; Certain supervision and protective effect have been played in its safe operation to gig, but are based on safety return circuit complex circuit, position dispersion, not enough, the very flexible of stability of relay, and emergency protection is divided into safety arrestment and warning two parts; Salvo is single; Cause the frequent emergency braking of system, accelerated mechanical wear, be unfavorable for safe operation; Therefore when reality is used, exist many disadvantages, need the real-time method for diagnosing faults of a kind of actv..
The utility model content
The purpose of the utility model provides a kind of mine hoist fault localization system based on expert system, to solve the problem of existing mine hoist safety system function singleness, troubleshooting difficulty.
The utility model proposes a kind of mine hoist fault localization system based on expert system, comprises
One knowledge base is used for storage failure information and cooresponding actuating signal;
One inference machine is used for the real time operation status information of the DC machine that collects and the information of knowledge base are compared, and whether the differentiation gig exists fault;
Said inference machine further comprises again:
14 common interface chips all are connected with the failure message source;
One decoder is connected with 14 common interface chips respectively;
One programmable interface chip; Link to each other with said decoder, all common interface chips and knowledge base respectively; Being used for the work state information that the common interface chip transmission is next and the information of knowledge base compares; And obtain actuating signal, and control the gating of 14 common interface chips through said decoder.
Further, said common interface chip is 8212 chips.
Further, said programmable interface chip is the 8255A chip.
Further, said decoder is the 74LS145 chip.
The utility model also proposes a kind of mine hoist method for diagnosing faults based on expert system, may further comprise the steps:
(1) knowledge base is set, is used for storage failure information and cooresponding actuating signal;
(2) work state information of DC machine is gathered in monitoring;
(3) differentiate whether there is fault according to the work state information of DC machine;
(4), then compare, and obtain cooresponding actuating signal according to classification in advance good failure message and said knowledge base if fault is arranged;
(5) if do not have fault, the then mode of operation of circularly monitoring motor.
Further, said failure message is divided into six types of emergency power offs, outage, sudden stop, parking, delayed shutdown, warning.
Further, in the step (5), the mode of operation of circularly monitoring motor is meant whether the circulatory monitoring motor is in the mode of operation under the described failure message.
Further, the mode of operation of circularly monitoring motor is in circulation, to detect successively: emergency power off → outage → sudden stop → parking → emergency power off → delayed shutdown → emergency power off → outage → sudden stop → warning.
Further, step (2) also comprises step before: according to failure message, at prestart all trouble points are detected.
Further, in the step (1), when said knowledge base is set, for failure message and cooresponding actuating signal are provided with numbering.
With respect to prior art, the beneficial effect of the utility model is:
1, the utility model has carried out the actv. classification to all faults; The usage range of various fault handling modes is done new regulation, overcome current direct current lifter safety guard-safeguard mono-shortcoming, increased reliability; Prolong mechanical life, improved capacity rating.
2, the system of the utility model realizes easily, need not to change any parts of former direct current lifter, just can obtain the two-fold defencive function.
3, the utlity model has very big alerting ability, to the increase and decrease of trouble point, hardware and software all is easy to revise.
4, the knowledge base of the utility model can be worked out by the Turbo programming in logic, and direct and gig check implement interface, thereby programming is simple, and real-time is good.
5, the utlity model has very strong Presentation Function, after the gig operating troubles, show first fault immediately; Behind the malfunction shutdown, can show all faults.This provides failure-free information for the failure analysis of gig, simultaneously, has alleviated the work capacity of maintenance greatly.
Description of drawings
Fig. 1 is a kind of example structure figure of the utility model based on the mine hoist fault localization system of expert system;
Fig. 2 is a kind of embodiment scheme drawing of the utility model emergency power off processing sequence;
Fig. 3 is cut off the power supply a kind of embodiment scheme drawing of 1 processing sequence of the utility model;
Fig. 4 is cut off the power supply a kind of embodiment scheme drawing of 3 processing sequences of the utility model;
Fig. 5 is a kind of embodiment scheme drawing of the utility model sudden stop processing sequence;
Fig. 6 is a kind of embodiment scheme drawing of the utility model parking processing sequence;
Fig. 7 is a kind of embodiment diagram of circuit of the utility model based on the mine hoist method for diagnosing faults of expert system;
Fig. 8 is the another kind of embodiment diagram of circuit of the utility model based on the mine hoist method for diagnosing faults of expert system.
The specific embodiment
Below in conjunction with accompanying drawing, specify the utility model.
See also Fig. 1; It is a kind of example structure figure of the utility model based on the mine hoist fault localization system of expert system; It comprises knowledge base 1 and inference machine 2; Knowledge base 1 is used for storage failure information and cooresponding actuating signal, and inference machine 2 is used for the information of the real time operation status information of the DC machine that collects and knowledge base 1 is compared, and whether the differentiation gig exists fault.Inference machine 2 further comprises 14 common interface chips 3, decoder 4 and programmable interface chip 5 again; 14 common interface chips 3 all are connected with the failure message source; Decoder 4 is connected with 14 common interface chips 3 respectively; Programmable interface chip 5 links to each other with said decoder, all common interface chips 3 and knowledge base 1 respectively; Be used for the work state information that common interface chip 3 transmission are next and the information of knowledge base 1 and compare, and obtain actuating signal, and control the gating of 14 common interface chips 3 through said decoder 4.Wherein, the common interface chip 3 of present embodiment adopts 8212 chips, and decoder 4 adopts the 74LS145 chip, and programmable interface chip 5 adopts the 8255A chip.
During work, gather the working state signal of direct current lifter, the breakdown signal that obtains is gathered, according to the characteristics employing serial parallel input mode of signal, with 8 signals of the parallel at every turn input of the signal in the breakdown signal source.Therefore select 14 common interface chips 3 (8212 chips, 8 * 14=112), a slice decoder 4 (74LS145 chip), a programmable interface chip 5 (8255A chip) for use to input.Let programmable interface chip 5 work in mode 0 (mode 0)---basic I/O mode; Even A mouth input; The output of B mouth, the output of C mouth, the PB0～PB3 of B mouth output is as the input of decoder 4; It is the gating signal of 14 8212I/O mouths that the output of decoder 4 (0～13) remakes; Just with the control loop of information (8), therefore, just can be obtained desirable failure message by the common interface chip 3 of gating as long as change the output of B mouth as requested by the A mouth input computing machine of programmable interface chip 5.Directly export 8255A and 8255A during output to output with the C mouth of two 8255A on general and the oralia
*All work in step-by-step set/reset mode.The output action guard signal is to control loop, and trouble diagnosing is accomplished.
The system of the utility model belongs to one of field of artificial intelligence study, and through letting computer imitation human brain be engaged in thinking activities such as reasoning, planning, it can both obtain more application at aspects such as prediction, diagnosis, design, supervision, controls.The knowledge base 1 of the utility model can be set up through Turbo Prolog intelligent language; Wherein knowledge base is storing the special knowledge that obtains from the expert there, comprise the obtaining of knowledge, knowledge expression, set up less system prototype and promote the expansion system through experiment then.Inference machine then can be derived correct answer to input information according to knowledge; Rather than simple search, the design adopts production expert system, promptly after the extraneous information input; Just automatic selective rule in knowledge base 1 accomplishes that coupling, conflict solve, this three steps action of executing rule.
The direct current lifter fault is varied, and the main signal that makes up native system has 83 kinds.The order of severity according to fault is classified to all signals, is divided into six types of breakdown signals and subsidiary signal.To six kinds of different breakdown signals gig is sent the different actions signal, be respectively: emergency power off, outage, sudden stop, parking, delayed shutdown, warning.Concrete breakdown signal is numbered and is classified as shown in table 1:
Table 1
(1) emergency power off is applicable to the power fail of armature major loop and control loop; (sequence of operation is as shown in Figure 2 in case occur handling immediately; What wherein show is that safety brake (A), direct current are opened the action relationships between (B), speed regulator (C), current relay (D), the AC circuit breaker (E) soon, time-delay t1=40ms).
(2) outage divides three kinds of situation; Outage 1 (sequence of operation such as Fig. 3; What wherein show is that safety brake (A), direct current are opened the action relationships between (B), speed regulator (C), the current relay (D) soon), outage 2 (sequence of operation is identical with emergency power off), 3 (sequence of operation such as Fig. 4 cut off the power supply; What wherein show is that safety brake (A), direct current are opened the action relationships between (B), speed regulator (C), current relay (D), armature alternating-current switch (F), magnetic field alternating-current switch (G), the field regulator (H) soon; Time-delay t1=40ms, t2=50ms.) correspond respectively to the DC armature loop, exchange armature circuit, magnetic field major loop.
(3) sudden stop is applicable to that mainly motor hypervelocity, motor overload, ultimate temperature such as arrive at (sequence of operation such as Fig. 5; What wherein show is that given (I), zero-speed detect the action relationships between (J), safety brake (A), speed regulator (C), the current relay (D), and state S1 is with the limited current electric braking).
(4) stop and mainly to be applicable to (sequence of operation such as Fig. 6 such as overcurrent, motor shaft be lubricated; What wherein show is that given switching (K), zero-speed detect the action relationships between (J), safety brake (A), speed regulator (C), the current relay (D), and wherein state S2 is with the braking of parking current electrical).
(5) delayed shutdown mainly is applicable to the brake noise fault, limiter circuit fault etc., and delay time is 20s, handle by stopping the time-delay back.Every time-delay 1s, each detects once " emergency power off ", " outage ", " sudden stop ", " STOP ", behind the time-delay 15s, gets primary fault information again, then handles if differentiation is still the source fault, if failback then continues to carry out following procedure.
(6) report to the police and mainly to be applicable to insulation, overheated etc.
Classification situation according to breakdown signal is programmed, and realizes the trouble diagnosing of DC machine.The function of system depends on the operating mode of direct current lifter, has following five functions:
1. direct current lifter switching order control: this function realizes through two approach; The one, realize automatically by software " switching order control "; Another kind is manually to be closed a floodgate in order by the driver, and two approach can be selected by " automatic closing " on " menu (menu) " and " closing by hand ".
Switching order:
(1) the excitation alternating-current switch closes a floodgate
(2) time-delay 500ms, the pulse of release field rectifier
(3) release excitation regulator
(4) behind the time-delay 100ms, exchange the armature breaker closing
(5) behind the time-delay 500ms, the fast folding lock of direct current
(6) behind the time-delay 500ms, the pulse of release armature
(7) behind the time-delay 10ms, the release speed regulator
2. prestart fault detection
For the sake of security,, must detect, if trouble free shows " ready to start ", just get into starting, otherwise show numbering, the fault title of response trouble point, and can't start all trouble points at prestart.
3. starting monitoring
After getting into starting, the following function of starting monitoring realization:
(1) automatically, manually select (show fixed and declutch)
(2) given and declutch between interlocking monitoring
(3) service direction monitoring
(4) stall monitoring
(5) reverse monitoring
Monitoring parameter is as shown in table 2:
Table 2
4. operation monitoring
The operation monitoring program detects in a circulation successively: emergency power off → outage → sudden stop → parking → emergency power off → delayed shutdown → emergency power off → outage → sudden stop → warning.If trouble free, the operation monitoring program is continuous detection failure dotted state circularly then, up to artificial parking in the operational process.Then make corresponding processing if break down, and show the numbering and the title of these primary faults by its classification.
5. behind the malfunction shutdown, fault detection
In operational process, in case break down, watchdog routine is just handled by the classification of fault, and shows primary fault, but in treating process, new fault may occur.Behind malfunction shutdown, for the ease of after parking, keeping in repair, can in " menu ", select " fault detection ", it can show the numbering and the type of all faults.
The knowledge representation of fault and processing thereof (being that software is realized):
Express fault and diagnostic knowledge thereof with production rule.Be about to knowledge and be divided into the fact and rule.The fact here is a failure message, and fault representes with predicate, and its variable is fault numbering and fault title, promptly fault (No., Name).And rule is the foundation of diagnostic reasoning, representes with the form of " if...then... ".Main rule is as shown in table 3:
Table 3
The test of system:
The test of time of run (time tests with built-in predicate)
During trouble free; Whole procedure (comprising prestart fault detection, starting monitoring, operation monitoring) time of run is 430ms, and wherein operation monitoring program (comprises that three emergency power offs detect twice outage detection; Twice sudden stop detects; Once stop to detect, one time delayed shutdown detects an alarm detection) account for 210ms.Emergency power off trace routine time of run≤10ms during trouble free, the emergency power off trace routine when fault is arranged (sending all control instruction corresponding) time of run is 21ms.
The utility model proposes a kind of mine hoist method for diagnosing faults based on expert system in addition, and as shown in Figure 7, it may further comprise the steps:
S701 is provided with a knowledge base, is used for storage failure information and cooresponding actuating signal.Said failure message is divided into six types of emergency power offs, outage, sudden stop, parking, delayed shutdown, warning.
S702, the work state information of DC machine is gathered in monitoring.
S703 differentiates whether there is fault according to the work state information of DC machine.
S704 if fault is arranged, then compares according to classification in advance good failure message and said knowledge base, and obtains cooresponding actuating signal.
S705 is not if having fault, the then mode of operation of circularly monitoring motor.The mode of operation of circularly monitoring motor is meant whether the circulatory monitoring motor is in the mode of operation under the described failure message, promptly in circulation, detects successively: emergency power off → outage → sudden stop → parking → emergency power off → delayed shutdown → emergency power off → outage → sudden stop → warning.
See also Fig. 8, it is the another kind of embodiment diagram of circuit of the utility model based on the mine hoist method for diagnosing faults of expert system, and it may further comprise the steps:
S801 is provided with a knowledge base, is used for storage failure information and cooresponding actuating signal, and numbering is set for failure message and cooresponding actuating signal.Said failure message is divided into six types of emergency power offs, outage, sudden stop, parking, delayed shutdown, warning.
S802 according to failure message, detects all trouble points at prestart.
S803, the work state information of DC machine is gathered in monitoring.
S804 differentiates whether there is fault according to the work state information of DC machine.
S805 if fault is arranged, then compares according to classification in advance good failure message and said knowledge base, and obtains cooresponding actuating signal.
S806 is not if having fault, the then mode of operation of circularly monitoring motor.The mode of operation of circularly monitoring motor is meant whether the circulatory monitoring motor is in the mode of operation under the described failure message, promptly in circulation, detects successively: emergency power off → outage → sudden stop → parking → emergency power off → delayed shutdown → emergency power off → outage → sudden stop → warning.
It is understandable that the detailed description of the foregoing description is in order to set forth and explain the principle of the utility model rather than to the qualification of the protection domain of the utility model.In every case other do not break away under the prerequisite of purport and technical spirit of the utility model, and the equalization of being accomplished changes and modifies change, all should be included in the scope of the claim that the utility model contains.
Claims (4)
1. the mine hoist fault localization system based on expert system is characterized in that, comprising:
One knowledge base is used for storage failure information and cooresponding actuating signal;
One inference machine is used for the real time operation status information of the DC machine that collects and the information of knowledge base are compared, and differentiates gig and whether have fault, and said inference machine further comprises again:
14 common interface chips all are connected with the failure message source;
One decoder is connected with 14 common interface chips respectively;
One programmable interface chip; Link to each other with said decoder, all common interface chips and knowledge base respectively; Being used for the work state information that the common interface chip transmission is next and the information of knowledge base compares; And obtain actuating signal, and control the gating of 14 common interface chips through said decoder.
2. the mine hoist fault localization system based on expert system as claimed in claim 1 is characterized in that said common interface chip is 8212 chips.
3. the mine hoist fault localization system based on expert system as claimed in claim 1 is characterized in that said programmable interface chip is the 8255A chip.
4. the mine hoist fault localization system based on expert system as claimed in claim 1 is characterized in that said decoder is the 74LS145 chip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203020140U CN202226500U (en) | 2011-08-18 | 2011-08-18 | Mine hoist fault diagnosis system based on expert system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011203020140U CN202226500U (en) | 2011-08-18 | 2011-08-18 | Mine hoist fault diagnosis system based on expert system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358542A (en) * | 2011-08-18 | 2012-02-22 | 上海交通大学 | Mine hoist fault diagnosis method and system based on expert system |
| CN103359572A (en) * | 2013-05-23 | 2013-10-23 | 中国矿业大学 | Elevator fault diagnosis method and device |
-
2011
- 2011-08-18 CN CN2011203020140U patent/CN202226500U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358542A (en) * | 2011-08-18 | 2012-02-22 | 上海交通大学 | Mine hoist fault diagnosis method and system based on expert system |
| CN103359572A (en) * | 2013-05-23 | 2013-10-23 | 中国矿业大学 | Elevator fault diagnosis method and device |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20160818 |