CN106323664A - Vibration testing and diagnosing method and device of air conditioning unit and air conditioning unit - Google Patents
Vibration testing and diagnosing method and device of air conditioning unit and air conditioning unit Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 238000004378 air conditioning Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000001133 acceleration Effects 0.000 claims abstract description 74
- 238000004458 analytical method Methods 0.000 claims abstract description 54
- 238000001228 spectrum Methods 0.000 claims abstract description 35
- 238000003745 diagnosis Methods 0.000 claims abstract description 32
- 238000012545 processing Methods 0.000 claims abstract description 31
- 238000010183 spectrum analysis Methods 0.000 claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims description 47
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
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Abstract
The invention provides a vibration testing and diagnosing method and device of an air conditioning unit and the air conditioning unit with the device. The vibration testing and diagnosing method of the air conditioning unit comprises the following steps: a signal acquisition step, wherein acceleration analog signals are acquired; a signal processing step, namely preprocessing the acquired acceleration analog signal and converting the acceleration analog signal into an acceleration digital signal; a signal analysis step, in which the converted acceleration digital signal is subjected to spectrum analysis to form spectrum characteristics; and a diagnosis step, namely matching the frequency spectrum characteristics with the fault characteristic data and giving a diagnosis result according to a matching result. According to the technical scheme provided by the invention, various time domain and frequency domain analysis methods are combined, the intelligent diagnosis of the large-scale equipment of the central air conditioner is realized through multi-point real-time monitoring analysis and establishment of a standard fault characteristic database, the fault point can be quickly positioned, a specific fault mode can be diagnosed, the production cost is greatly saved, and the high efficiency of after-sale maintenance is improved.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of air conditioning unit vibration-testing and diagnostic method, device
And it is air conditioning unit.
Background technology
In industry, its fault all can not be accurately positioned and diagnose by the on-line testing of existing large-size air conditioning unit,
Its vibration-testing is all by the way of off-line, artificial hand holding equipment carry out single-point detection, and only relies on vibration displacement and sentence
Fixed abnormal, still can not detect fault mode and concrete location of fault.Secondly, fault is run into after sale when needing maintenance, all
Can only investigate fault by the way of trial and error, when not having testing conditions can only return factory, Expenses Cost is bigger, because of air-conditioner host equipment
The direct economic loss that long-time maintenance down brings can not be estimated.According to statistics, every year because of large-sized unit test only industry
The most millions of unit of electricity cost, does not the most include the loss of other coolant, changes the costs such as parts.
Patent CN102072144A provides a kind of screw compressor on-line vibration, noise monitoring and fault diagnosis system, though
It is so analysis system based on vibration-testing, but the oscillogram of the signal processing only shown, diagnostic result can not be exported, i.e.
Can not automatically identify fault mode, and object is confined to screw compressor, it is impossible to for produce and after sale.
Patent CN101907089A provides a kind of compressor shaft system fault diagnosis side based on three dimensions orbit of shaft center
Method, the method includes synthesizing three-dimensional vibrating analysis and filtering three-dimensional vibrating analysis, it is possible to clearer, vivo reflection equipment
Running status and fault signature.This invention simply proposes a kind of new analysis method from the angle of signal processing, is theoretical layer
Face, need technical professional according to analysis result, equipment to be diagnosed, it is impossible to for actual production and after sale.
Summary of the invention
In view of this, the invention provides a kind of air conditioning unit vibration-testing and diagnostic method, including: signals collecting walks
Suddenly, analog acceleration signal is gathered；Signal processing step, carries out pretreatment by the described analog acceleration signal collected, and
It is converted into acceleration digital signal；Signal analysis step, carries out spectrum analysis, shape to the acceleration digital signal after described conversion
Become spectrum signature；Diagnosis algorithm, mates described spectrum signature with fault signature data, provides diagnosis according to matching result
Result.
Alternatively, in described signals collecting step, at motor, suction end bearing, exhaust end adpting flange, suction end even
At least one location arrangements sensor in acting flange, leg, is used for gathering described analog acceleration signal.
Alternatively, described signal processing step includes: the described analog acceleration signal collected is carried out pre-filtering,
Amplify；The described analog acceleration signal through pre-filtering, amplification is converted into acceleration digital signal.
Alternatively, described signal analysis step includes: Displacement Analysis step, including: described acceleration digital signal is entered
Row integration, forms displacement digital signal；Described displacement digital signal is added up, forms Displacements Distribution information, extract and show
Show displacement characteristic；Spectral analysis step, carries out spectrum analysis to described displacement digital signal, extracts and show spectrum signature.
Alternatively, described diagnosis algorithm also includes: mated with described fault signature data by described spectrum signature, if
By described matching result and described diagnostic result, the match is successful shows that early warning indicates, described early warning indicate include highlighting, word
In body color marking, shade color sign, symbology, early warning Mark Column at least one.
Alternatively, described diagnosis algorithm also includes: mated with described fault signature data by described spectrum signature, if
The match is successful provides abnormal alarm, and automatically sends mail to related personnel.
Alternatively, also include the described analog acceleration signal collected is stored historical data base.
Alternatively, also include the described analog acceleration signal reading in described historical data base, perform at described signal
Reason step, described signal analysis step and described diagnosis algorithm, and generate analysis report.
Another aspect of the present invention provides again a kind of air conditioning unit vibration-testing and the diagnostic equipment, including: sensor,
For gathering analog acceleration signal；Signal processing module, for carrying out pre-place by the described analog acceleration signal collected
Reason, and it is converted into acceleration digital signal；Signal analysis module, for carrying out frequency to the acceleration digital signal after described conversion
Analysis of spectrum, forms spectrum signature；Diagnostic module, for described spectrum signature is mated with fault signature data, according to
Join result and provide diagnostic result.
Alternatively, described transducer arrangements in motor, suction end bearing, exhaust end adpting flange, suction end adpting flange,
At least one position in leg.
Alternatively, described signal processing module includes: signal condition unit, for the acceleration described sensor acquisition arrived
Degree analogue signal carries out pre-filtering, amplification；DAQ collecting device, for the acceleration described signal condition cell processing crossed
Analogue signal is converted into acceleration digital signal.
Alternatively, described signal analysis module includes: Displacement Analysis unit, for being carried out by described acceleration digital signal
Integration, forms displacement digital signal；Described displacement digital signal is added up, forms Displacements Distribution information, extract and show
Displacement characteristic；Spectral analysis unit, for described displacement digital signal is carried out spectrum analysis, extracts and shows spectrum signature.
Alternatively, described diagnostic module includes: matching unit, for being carried out with fault signature data by described spectrum signature
Coupling；Diagnosis Tip element, is used for: if the matching result of described matching unit is that the match is successful, by described matching result and institute
State diagnostic result display early warning to indicate, described early warning indicate include highlighting, font color indicates, shade color indicates, symbol
Number indicate, in early warning Mark Column at least one.
Alternatively, described diagnostic module also includes: alarm unit, is used for: if the matching result of described matching unit is
It is made into merit, then provides abnormal alarm, and automatically send mail to related personnel.
Alternatively, also include historical data base, be used for the analog acceleration signal collected described in storing.
Alternatively, also include historical data analysis module, for reading the described acceleration mould in described historical data base
Intend signal, call described signal processing module, described signal analysis module and described diagnostic module and described acceleration simulation is believed
Number carry out processing, analyze and diagnosing, and generate analysis report.
Another aspect of the invention additionally provides a kind of air conditioning unit, has the air conditioning unit vibration described in any of the above item
Test and the diagnostic equipment.
The technical scheme that the present invention provides, by combining the analysis method of various time domain and frequency domain, is supervised in real time by multiple spot
Cls analysis, the fault signature data base of Criterion, it is achieved the intelligent diagnostics to central air-conditioning main equipment, can not only quickly determine
Trouble point, position, moreover it is possible to be diagnosed to be concrete fault mode, investigate fault targetedly, be greatly saved production cost, improves
The high efficiency overhauled after sale.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, this
Bright schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the air conditioning unit vibration-testing that provides of the present invention and the overall structure figure of the diagnostic equipment；
Fig. 2 is that the structure of a kind of preferred embodiment of the air conditioning unit vibration-testing that provides of the present invention and the diagnostic equipment is shown
It is intended to；
Fig. 3 is the Account Dept of a kind of preferred embodiment of the air conditioning unit vibration-testing that provides of the present invention and the diagnostic equipment
Administration's figure；
Fig. 4 is the host computer of a kind of preferred embodiment of the air conditioning unit vibration-testing that provides of the present invention and the diagnostic equipment
Analysis process figure；
Fig. 5 is the air conditioning unit rotor unbalance that provides of the present invention or misaligns the test of class fault vibration and diagnostic result
Display interface figure；
Fig. 6 is that the air conditioning unit machinery that the present invention provides loosens the test of class fault vibration and diagnostic result display interface
Figure；
Fig. 7 is the air conditioning unit vibration-testing that provides of the present invention and the general frame figure of diagnostic method；
Fig. 8 is the flow chart of the signal analysis step of the air conditioning unit vibration-testing that provides of the present invention and diagnostic method；
Fig. 9 is the flow chart of the diagnosis algorithm of the air conditioning unit vibration-testing that provides of the present invention and diagnostic method.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described by corresponding accompanying drawing.Obviously, described embodiment is only the present invention one
Section Example rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " it is etc. for distinguishing similar object, without being used for describing specific order or precedence.Should be appreciated that so use
Data can exchange in the appropriate case, in order to embodiments of the invention described herein can with except here diagram or
Order beyond those described is implemented.Additionally, term " includes " and " having " and their any deformation, it is intended that cover
Cover non-exclusive comprising, such as, contain series of steps or the process of unit, method, system, product or equipment are not necessarily limited to
Those steps clearly listed or unit, but can include the most clearly listing or for these processes, method, product
Or intrinsic other step of equipment or unit.
The invention provides a kind of air conditioning unit vibration-testing and the diagnostic equipment.Fig. 1 is the air conditioner that the present invention provides
The vibration-testing of group and the overall structure figure of the diagnostic equipment.As it is shown in figure 1, the air conditioning unit vibration-testing of the present invention and diagnosis dress
Put and include: sensor 100, be used for gathering analog acceleration signal；Signal processing module 200, for by described collect add
Speed analogue signal carries out pretreatment, and is converted into acceleration digital signal；Signal analysis module 300, for described conversion
After acceleration digital signal carry out spectrum analysis, form spectrum signature；Diagnostic module 400, for by described spectrum signature with
Fault signature data are mated, and provide diagnostic result according to matching result.
A kind of embodiment of the wind-guiding apparatus of air conditioner according to band moving component of the present invention, described sensor 100 is arranged in
At least one position in motor, suction end bearing, exhaust end adpting flange, suction end adpting flange, leg.
Fig. 2 is that the structure of a kind of preferred embodiment of the air conditioning unit vibration-testing that provides of the present invention and the diagnostic equipment is shown
It is intended to.As in figure 2 it is shown, described signal processing module 200 includes: signal condition unit 210, for described sensor acquisition is arrived
Analog acceleration signal carry out pre-filtering, amplification；DAQ collecting device 220, for by described signal condition cell processing mistake
Analog acceleration signal be converted into acceleration digital signal.
Fig. 3 is the Account Dept of a kind of preferred embodiment of the air conditioning unit vibration-testing that provides of the present invention and the diagnostic equipment
Administration's figure.As it is shown on figure 3, whole system is made up of slave computer and host computer, slave computer includes sensor (8), signal condition list
Unit (8), interface bus (), DAQ capture card etc., the vibration signal of sensor acquisition unit, enters through signal condition unit
Row amplifies, and the analogue signal of collection is converted into digital signal by bus to DAQ capture card, finally by digital data transmission to upper
Machine software processes.Host computer is based on the various signal processing algorithm of LABVIEW programming realization, the numeral letter passing capture card back
Number it is analyzed processing, it is achieved the intelligent diagnostics of product bug, and by data real-time storage to server, it is achieved 8 passages
Parallel sampling, analyzes in real time, display device show diagnostic result.This system saves production life cycle, reduces and produces loss, measuring point
Number can be extended to 16 points, portable high, can be used for the health monitoring of other products after being adapted.
This device has the strongest practical value: carries out central air conditioner main machine equipment vibrating on-line testing, meets 8 passages
Parallel acquisition, it is achieved trouble point is accurately positioned, breaks through traditional portable equipment and carries out single-point vibration-testing, and trial and error mode is investigated
Fault, detects more efficient, reliable；By analyzing vibration data, extract fault signature, and the fault mode of data base carry out
Joining, it is achieved intelligent diagnostics, malfunction elimination is in hgher efficiency, has broken away from the pattern relying on expert to field assay；Fault signature data
The continuous accumulation in storehouse, can be provided strong technical support after sale, be greatly improved the efficiency of field adjustable, maintenance；Pass through
Server storage data, on the one hand can remotely check historical data, extremely can review, and on the other hand shake by accumulation is substantial amounts of
Dynamic test data, make full use of data analysis at design link, are optimized product；Package unit is implemented easy and simple to handle, dimension
Protecting simple, more need not technical professional and operate, application is stronger.
As in figure 2 it is shown, described signal analysis module 300 includes: Displacement Analysis unit 310, for by the described acceleration number of degrees
Word signal is integrated, and forms displacement digital signal；Described displacement digital signal is added up, forms Displacements Distribution information,
Extract and show displacement characteristic；Spectral analysis unit 320, for described displacement digital signal carries out spectrum analysis, extracts also
Display spectrum signature.Fig. 4 is the air conditioning unit vibration-testing that provides of the present invention and a kind of preferred embodiment of the diagnostic equipment
Host computer analysis process figure.As shown in Figure 4, after acceleration signal collection, signal is analyzed in real time, and filled by display
Put the acceleration signal showing Real-time Collection in the way of Acceleration pulse figure, and the displacement of the formation after Integral Processing
Oscillogram, the also statistical analysis to displacement waveform, can see the distribution of vibration displacement intuitively.Also have described displacement numeral
Signal carries out spectrum analysis, will be converted into frequency domain and analyzed by time-domain signal.The purpose of spectrum analysis is the complicated time
Course waveform, is decomposed into some single harmonic components through Fourier transformation and studies, to obtain the frequency structure letter of signal
Breath.Signal is carried out spectrum analysis and can obtain more useful information, as tried to achieve each frequency content in Dynamic Signal and frequency
Rate distribution, obtains the amplitude distribution of each frequency content, thus obtains the frequency values of main amplitude.
Referring back to Fig. 2, described diagnostic module 400 includes: matching unit 410, for described spectrum signature is special with fault
Levy data to mate；Diagnosis Tip element 420, is used for: if the matching result of described matching unit is that the match is successful, by described
Matching result and the display early warning of described diagnostic result indicate, described early warning indicate include highlighting, font color indicates, shading
In color marking, symbology, early warning Mark Column at least one.In the real-time analysis flow figure of Fig. 4, at Displacement Analysis and frequency
After analysis of spectrum, by the displacement characteristic extracted and spectrum signature, the characteristic with Mishap Database is compared in real time, at letter
Display diagnostic result in breath prompting frame.During diagnosis, system, according to the type arranged, can be transferred in Mishap Database automatically
Corresponding characteristic is mated.Fault signature data in data base are set up by excel form, safeguard new architecture, new
The characteristic of fault is relatively simple, it is only necessary to be filled with according to the form defined.Display at host computer
In interface, some basic operation buttons and the setting of sampling parameter can be shown, parameter setting that software analysis is relevant, acceleration
Displacement waveform after oscillogram, and analyzing and processing, also has the statistical analysis to displacement waveform, can see vibration position intuitively
The distribution moved.Core is feature extraction and diagnosis viewing area, including the characteristic displacement that each measuring point is extracted and frequency,
When finding fault signature data, corresponding measuring point data can be highlighted, and information alert frame can show concrete fault signature.
Have at present two major break down features in data base, i.e. rotor unbalance or misalign, machinery loosens, and is all that large-sized unit is normal
The failure classes seen, need the mounting structure adjusting corresponding parts according to measuring point to eliminate fault.As a example by helical-lobe compressor, tool
Body accident analysis is theoretical according to mechanical fault diagnosis, through the fundamental vibration frequency of Theoretical Calculation helical-lobe compressor include 50Hz and
41.7Hz, respectively corresponding male rotor and the meshing frequency of female rotor, it is judged that rotor unbalance or misalign is based in spectrogram
Whether there is the frequency component of 2 times of fundamental frequencies, machinery loosens the fault of class is then based on whether there is 3 times or the frequency of 4 frequencys multiplication
Component.Concrete analysis is the frequency component in spectrogram to be extracted, and compares with the normal data in Mishap Database, base
Deviation is there is, it is judged that value allows the deviation of ± 5% in Fourier transformation itself.Fig. 5 be the present invention provide air conditioning unit
Rotor unbalance or misalign class fault vibration test and diagnostic result display interface figure.As it is shown in figure 5, analyze measuring point 4, survey
There are 2 frequency multiplication abnormal frequency components (2 times of 50Hz fundamental frequency) in the frequency spectrum of point 8, it is determined that there is rotor for measuring point 4 and measuring point 8 uneven
Weigh or misalign class fault.Fig. 6 is that the air conditioning unit machinery that the present invention provides loosens the test of class fault vibration and diagnostic result
Display interface figure.As shown in Figure 6, there are 3 frequency multiplication abnormal frequency components (3 times of 41.7Hz fundamental frequency) in the frequency spectrum analyzing measuring point 7,
It is judged to that measuring point 7 machinery loosens class fault.It can also be seen that occur that the when of abnormal frequency spectrum, vibration displacement is also from above two figures
Not exceeding standard, this is also the place that this system is better than original detection means, and only relying on vibration displacement is incomplete reliable way.
Referring back to Fig. 2, according to a kind of embodiment of the wind-guiding apparatus of air conditioner of band moving component of the present invention, described diagnosis mould
Block 400 also includes: alarm unit 430, is used for: if the matching result of described matching unit is that the match is successful, then provide abnormal report
Alert, and automatically send mail to related personnel.Occur during detection extremely having alarm, and automatically sending mail to phase
Close person liable, it is not necessary to employee's moment observes monitoring situation.
Referring back to Fig. 2, according to a kind of embodiment of the wind-guiding apparatus of air conditioner of band moving component of the present invention, also include history
Data base 500, are used for the analog acceleration signal collected described in storing.
As in figure 2 it is shown, also include historical data analysis module 600, described for read in described historical data base 500
Analog acceleration signal, calls described signal processing module 200, described signal analysis module 300 and described diagnostic module 400 right
Described analog acceleration signal carries out processing, analyze and diagnosing, and generates analysis report.The base of tested unit is comprised inside report
This information, and each measuring point extract characteristic and diagnostic result.By importing Test data generation examining report, it is simple to
Inquire about and extremely review.
Real-time sampling is analyzed and history manual analyzing two parts, and the analysis method of time domain and frequency domain that all combines is to vibration number
According to processing.Referring back to Fig. 4, analyze by the acceleration signal gathered being integrated, adding up in real time, spectrum analysis etc.,
Extracting and show characteristic frequency, the characteristic with Mishap Database is compared in real time, shows diagnosis in information alert frame
Result.Historical analysis is to be analyzed by importing the historical data of storage in server, analyzes method consistent with real-time, and
And analysis report can be generated.
Another aspect of the invention additionally provides a kind of air conditioning unit, has the air conditioning unit vibration described in any of the above item
Test and the diagnostic equipment.
Another aspect of the present invention additionally provides a kind of air conditioning unit vibration-testing and diagnostic method.Fig. 7 is that the present invention carries
The air conditioning unit vibration-testing of confession and the general frame figure of diagnostic method.Vibration-testing that the present invention is air conditioning unit and diagnosis side
Method includes: step S110, signals collecting step, gathers analog acceleration signal；Step S120, signal processing step, by described
The analog acceleration signal collected carries out pretreatment, and is converted into acceleration digital signal；Step S130, signal analysis walks
Suddenly, the acceleration digital signal after described conversion is carried out spectrum analysis, form spectrum signature；Step S140, diagnosis algorithm, will
Described spectrum signature mates with fault signature data, provides diagnostic result according to matching result.
A kind of embodiment of the air conditioner wind-guiding method according to band moving component of the present invention, in described signals collecting step
In, at least one location arrangements sensing in motor, suction end bearing, exhaust end adpting flange, suction end adpting flange, leg
Device, is used for gathering described analog acceleration signal.
A kind of embodiment of the air conditioner wind-guiding method according to band moving component of the present invention, described signal processing step S120
Including: the described analog acceleration signal collected is carried out pre-filtering, amplification；By described through pre-filtering, amplification
Analog acceleration signal is converted into acceleration digital signal.
Fig. 8 is the flow chart of the signal analysis step of the air conditioning unit vibration-testing that provides of the present invention and diagnostic method.
As shown in Figure 8, described signal analysis step S130 includes: Displacement Analysis step S131, including: by described acceleration digital signal
It is integrated, forms displacement digital signal；Described displacement digital signal is added up, forms Displacements Distribution information, extract also
Display characteristic displacement；Spectral analysis step S132, carries out spectrum analysis to described displacement digital signal, extracts and shows that frequency spectrum is special
Levy.
Fig. 9 is the flow chart of the diagnosis algorithm of the air conditioning unit vibration-testing that provides of the present invention and diagnostic method.Such as Fig. 9
Shown in, described diagnosis algorithm S140 also includes: step S141, described spectrum signature and described fault signature data is carried out
Join；By described matching result and described diagnostic result, step S142, shows that early warning indicates if the match is successful, described early warning indicates bag
Include highlight, font color sign, in shade color sign, symbology, early warning Mark Column at least one.
A kind of embodiment of the air conditioner wind-guiding method according to band moving component of the present invention, as it is shown in figure 9, described diagnosis step
Rapid S140, also performs step S143 after execution of step S141, is entered with described fault signature data by described spectrum signature
Row coupling, provides abnormal alarm if the match is successful, and automatically sends mail to related personnel.
A kind of embodiment of the air conditioner wind-guiding method according to band moving component of the present invention, also includes collecting described
Analog acceleration signal stores historical data base.
A kind of embodiment of the air conditioner wind-guiding method according to band moving component of the present invention, also includes reading described history number
According to the described analog acceleration signal in storehouse, perform described signal processing step, described signal analysis step and described diagnosis step
And generate analysis report suddenly,.
Air conditioning unit vibration-testing diagnostic method and device that the present invention provides have the advantages that
1, shorten production life cycle, reduce and produce testing cost repeatedly, including commercial power, change parts trial and error etc., protect
Card product quality；
2, for product debugging after sale, reprocess, it is not necessary to professional and technical personnel, can quickly position unit fault, simultaneously
Can remotely check test data, improve engineering efficiency and overhaul efficiency, increase customer satisfaction degree that Branding image expands city
Field occupation rate；
3, the Monitoring Data comprising system operation characteristic in a large number is stored in server, can be used for design link, real to product
Existing lean design；
4, integrated portable device, uses object unrestricted, can be directly used for the health status of other products after debugging
Monitoring.
The technical scheme that the present invention provides, by combining the analysis method of various time domain and frequency domain, is supervised in real time by multiple spot
Cls analysis, the fault signature data base of Criterion, it is achieved the intelligent diagnostics to central air-conditioning main equipment, can not only quickly determine
Trouble point, position, moreover it is possible to be diagnosed to be concrete fault mode, investigate fault targetedly, be greatly saved production cost, improves
The high efficiency overhauled after sale.
Function described herein can be implemented in hardware, the processor software, firmware or its any combination that perform.
If implemented in the software performed by processor, then function can be stored in computer as one or more instruction or code
Transmitted on readable media or via computer-readable media.Other example and embodiment are wanted in the present invention and appended right
In seeking scope and the spirit of book.For example, owing to the character of software, function described above can use by processor,
The software that hardware, firmware, hardwired or the combination appointing whichever in these perform is implemented.Additionally, each functional unit can be integrated
In a processing unit, it is also possible to be that unit is individually physically present, it is also possible to two or more unit are integrated in
In one unit.
In several embodiments provided herein, it should be understood that disclosed technology contents, can be passed through other
Mode realizes.Wherein, device embodiment described above is only schematically, the division of the most described unit, Ke Yiwei
A kind of logic function divides, actual can have when realizing other dividing mode, the most multiple unit or assembly can in conjunction with or
Person is desirably integrated into another system, or some features can be ignored, or does not performs.Another point, shown or discussed is mutual
Between coupling direct-coupling or communication connection can be the INDIRECT COUPLING by some interfaces, unit or module or communication link
Connect, can be being electrical or other form.
The described unit illustrated as separating component can be or may not be physically separate, as controlling dress
The parts put can be or may not be physical location, i.e. may be located at a place, or can also be distributed to multiple
On unit.Some or all of unit therein can be selected according to the actual needs to realize the purpose of the present embodiment scheme.
If described integrated unit realizes and as independent production marketing or use using the form of SFU software functional unit
Time, can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part that in other words prior art contributed or this technical scheme completely or partially can be with the form of software product
Embodying, this computer software product is stored in a storage medium, including some instructions with so that a computer
Equipment (can be for personal computer, server or the network equipment etc.) perform the whole of method described in each embodiment of the present invention or
Part steps.And aforesaid storage medium includes: USB flash disk, read only memory (ROM, Read-Only Memory), random access memory are deposited
Reservoir (RAM, Random Access Memory), portable hard drive, magnetic disc or CD etc. are various can store program code
Medium.
The foregoing is only embodiments of the invention, be not limited to the present invention, for those skilled in the art
For Yuan, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made,
Equivalent, improvement etc., within should be included in scope of the presently claimed invention.
Claims (17)
1. an air conditioning unit vibration-testing and diagnostic method, it is characterised in that including:
Signals collecting step, gathers analog acceleration signal；
Signal processing step, carries out the described analog acceleration signal collected pretreatment, and is converted into acceleration numeral letter
Number；
Signal analysis step, carries out spectrum analysis to the acceleration digital signal after described conversion, forms spectrum signature；
Diagnosis algorithm, mates described spectrum signature with fault signature data, provides diagnostic result according to matching result.
Method the most according to claim 1, it is characterised in that in described signals collecting step, at motor, suction end axle
Hold, at least one location arrangements sensor in exhaust end adpting flange, suction end adpting flange, leg, be used for gathering described in add
Speed analogue signal.
Method the most according to claim 1 and 2, it is characterised in that described signal processing step includes:
The described analog acceleration signal collected is carried out pre-filtering, amplification；
The described analog acceleration signal through pre-filtering, amplification is converted into acceleration digital signal.
4. according to the method according to any one of claim 1-3, it is characterised in that described signal analysis step includes:
Displacement Analysis step, including: described acceleration digital signal is integrated, forms displacement digital signal；To institute's rheme
Move digital signal to add up, form Displacements Distribution information, extract and show displacement characteristic；
Spectral analysis step, carries out spectrum analysis to described displacement digital signal, extracts and show spectrum signature.
5. according to the method according to any one of claim 1-4, it is characterised in that described diagnosis algorithm also includes: by described
Spectrum signature mates with described fault signature data, described matching result and described diagnostic result is shown if the match is successful
Early warning indicates, described early warning indicate include highlighting, font color signs, shade color sign, symbology, early warning sign
In hurdle at least one.
6. according to the method according to any one of claim 1-5, it is characterised in that described diagnosis algorithm also includes: by described
Spectrum signature mates with described fault signature data, provides abnormal alarm if the match is successful, and automatically sends mail to phase
Pass personnel.
7. according to the method according to any one of claim 1-6, it is characterised in that also include the described acceleration collected
Analog signal storage is to historical data base.
Method the most according to claim 7, it is characterised in that also include the described acceleration reading in described historical data base
Degree analogue signal, performs described signal processing step, described signal analysis step and described diagnosis algorithm, and generates analysis report
Accuse.
9. an air conditioning unit vibration-testing and the diagnostic equipment, it is characterised in that including:
Sensor, is used for gathering analog acceleration signal；
Signal processing module, for the described analog acceleration signal collected is carried out pretreatment, and is converted into the acceleration number of degrees
Word signal；
Signal analysis module, for the acceleration digital signal after described conversion carries out spectrum analysis, forms spectrum signature；
Diagnostic module, for being mated with fault signature data by described spectrum signature, provides diagnosis knot according to matching result
Really.
Device the most according to claim 9, it is characterised in that described transducer arrangements is in motor, suction end bearing, row
At least one position in gas end adpting flange, suction end adpting flange, leg.
11. according to the device described in claim 9 or 10, it is characterised in that described signal processing module includes:
Signal condition unit, for by described sensor acquisition to analog acceleration signal carry out pre-filtering, amplification；
DAQ collecting device, for being converted into acceleration numeral by the analog acceleration signal that described signal condition cell processing is crossed
Signal.
12. according to the device according to any one of claim 9-11, it is characterised in that described signal analysis module includes:
Displacement Analysis unit, for being integrated by described acceleration digital signal, forms displacement digital signal；To described displacement
Digital signal is added up, and forms Displacements Distribution information, extracts and show displacement characteristic；
Spectral analysis unit, for described displacement digital signal is carried out spectrum analysis, extracts and shows spectrum signature.
13. according to the device according to any one of claim 9-12, it is characterised in that described diagnostic module includes:
Matching unit, for mating described spectrum signature with fault signature data；
Diagnosis Tip element, is used for: if the matching result of described matching unit is that the match is successful, by described matching result and described
Diagnostic result display early warning indicates, described early warning indicate include highlighting, font color indicates, shade color indicates, symbol
Indicate, in early warning Mark Column at least one.
14. according to the device according to any one of claim 9-13, it is characterised in that described diagnostic module also includes: report to the police
Unit, is used for: if the matching result of described matching unit is that the match is successful, then provides abnormal alarm, and automatically sends mail to
Related personnel.
15. according to the device according to any one of claim 9-14, it is characterised in that also include historical data base, is used for depositing
The analog acceleration signal collected described in storage.
16. devices according to claim 15, it is characterised in that also include historical data analysis module, are used for reading institute
State the described analog acceleration signal in historical data base, call described signal processing module, described signal analysis module and institute
State diagnostic module described analog acceleration signal is processed, analyzes and diagnosed, and generate analysis report.
17. 1 kinds air conditioning unit, has the air conditioning unit vibration-testing as according to any one of claim 9-16 and diagnosis
Device.
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