CN105588636B - Fan abnormal sound detection system - Google Patents
Fan abnormal sound detection system Download PDFInfo
- Publication number
- CN105588636B CN105588636B CN201610050636.6A CN201610050636A CN105588636B CN 105588636 B CN105588636 B CN 105588636B CN 201610050636 A CN201610050636 A CN 201610050636A CN 105588636 B CN105588636 B CN 105588636B
- Authority
- CN
- China
- Prior art keywords
- fan
- measured
- signal
- data
- abnormal sound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000002159 abnormal effect Effects 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 230000001133 acceleration Effects 0.000 claims abstract description 43
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 238000004458 analytical method Methods 0.000 claims abstract description 10
- 238000000605 extraction Methods 0.000 claims abstract description 8
- 230000005619 thermoelectricity Effects 0.000 claims description 29
- 230000000454 anti-cipatory effect Effects 0.000 claims description 18
- 239000001856 Ethyl cellulose Substances 0.000 claims description 15
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 15
- 229920001249 ethyl cellulose Polymers 0.000 claims description 15
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 15
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 claims description 11
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 claims description 11
- 229940116411 terpineol Drugs 0.000 claims description 11
- BPDQXJZWVBPDSN-UHFFFAOYSA-N tellanylideneantimony;tellurium Chemical compound [Te].[Te]=[Sb].[Te]=[Sb] BPDQXJZWVBPDSN-UHFFFAOYSA-N 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 229910052787 antimony Inorganic materials 0.000 claims description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000007650 screen-printing Methods 0.000 claims description 3
- 238000004528 spin coating Methods 0.000 claims description 2
- 229910052714 tellurium Inorganic materials 0.000 claims description 2
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 2
- 238000013481 data capture Methods 0.000 claims 1
- XSOKHXFFCGXDJZ-UHFFFAOYSA-N telluride(2-) Chemical compound [Te-2] XSOKHXFFCGXDJZ-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- MRPWWVMHWSDJEH-UHFFFAOYSA-N antimony telluride Chemical compound [SbH3+3].[SbH3+3].[TeH2-2].[TeH2-2].[TeH2-2] MRPWWVMHWSDJEH-UHFFFAOYSA-N 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a fan abnormal sound detection system, which relates to the technical field of fan detection and comprises a sensor module, a signal acquisition module, a data processing system and a fixed support, wherein the sensor module comprises an acceleration sensor, a sound sensor and a thermoelectric converter; the signal acquisition module comprises an NI9234 data acquisition card and an NI cDAQ-9188XT Ethernet case, wherein the NI9234 data acquisition card is respectively connected with an acceleration sensor and a sound sensor, and the NI9234 data acquisition card is also connected with the NI cDAQ-9188XT Ethernet case; the data processing system comprises a data conversion and feature extraction module based on Labview and a mathematic modeling analysis system module based on Matlab, wherein the data conversion and feature extraction module based on Labview is respectively connected with an NI cDAQ-9188XT Ethernet case and the mathematic modeling analysis system module based on Matlab. The invention integrates signal acquisition, analysis and judgment into a whole, and reduces the problem of misjudgment caused by inconsistent boundary judgment; the automation degree is high, the labor cost is saved, and the production efficiency is improved.
Description
Technical field
The present invention relates to fan detection technique field, be specifically related to a kind of fan abnormal sound detecting system.
Background technology
From heavy mechanical equipment to electronic equipment, radiator fan is the guarantee that equipment runs well.Along with electronic product
Development, the noise problem of radiator fan directly affects the life having influence on people, also receives more and more attention.Manufacture
Factory starts to pay attention to and strictly arrive to be not allow for any abnormal sound, so the requirement to the detection of fan abnormal sound becomes the most urgent.At present
The detection of fan abnormal sound is manufactured almost exclusively by the special coroner of training and the fan before rolling off the production line is carried out audition examination, and with this
Judge the excellent, secondary of fan.And be the most all difficult to be substituted by automation equipment, consume a large amount of hand labor
This, and owing to the repetition monotonous labour of people judges to make that workman is tired, subjective judgment misalignment, often occur failing to judge, judge by accident and
The situation of misjudgement, abnormal sound detection is extremely difficult to effectively control, and causes defect ware to come into the market, impacts company.
Chinese patent application CN201410428701.5 discloses a kind of fan abnormal sound resonance measuring equipment, includes the end
Seat, fan retaining bracket, resonance part, resonance part fix seat and vibration signal pickup analysis device, fan retaining bracket and resonance part
Fixing seat is respectively arranged on base；Have one for setting the embedding slot of fan on this fan retaining bracket, fan outlet court
On be embedded in this embedding slot；This resonance part lower end tilts to be fixed on resonance part and fixes on seat, resonance part upper end extending obliquely in
Above fan outlet；This vibration signal pickup analysis device is connected with resonance part, this vibration signal pickup analysis device bag
Include acceleration transducer and be attached thereto to analyze and show the analyser of vibration signal.This patent application is by detecting through wind
Fan vibration causes the resonance part of resonance to detect fan abnormal sound, and indirect detection easily causes error, thus affects testing result
Reliability.
Chinese patent application CN201220114427.0 discloses the safety early warning device of a kind of medium and small bridges operation phase,
Including NICompactRIO cabinet, this NICompactRIO cabinet is provided with NICompactRIO embedded controller,
NI9237 data collecting card, NI9203 data collecting card and NI9234 data collecting card, described NI9237 data collecting card,
NI9203 data collecting card and NI9234 data collecting card are connected with NICompactRIO embedded controller respectively, described
Connecting on NI9237 data collecting card and have strain gauge, described NI9203 data collecting card connects pressure transmitter, described
Connect on NI9234 data collecting card and have acceleration transducer.NICompactRIO cabinet is that National Instruments produces
Data acquisition platform, connected multiple data collecting plate card can be used for the collection of various simulation, digital signal, all data
Analog input card all supports hot plug, and easy to use and reliable property is high.The most high-precision NI data collecting system is not the most employed
During the detection of fan abnormal sound.
Fan heat condition in use should also be as being put in detection range, and it reflects to a certain extent
Whether fan component exists the situation of operation irregularity, but the detection time is the shortest, is difficult to fan during detection
Heat condition reflects.
It addition, in the detection of fan abnormal sound, generally require and sensing parts be connected on fan to be measured, and fan to be measured
Mostly it is not easily installed the setting of sensing parts, detection is caused difficulty；Simultaneously need to by fan to be measured and some test section
Part is attached, and the steadiness of different fan is different, if fan is placed shakiness and also will be impacted detection, even results in inspection
Survey error.
Summary of the invention
For the deficiencies in the prior art, the purpose of the present invention aims to provide a kind of test process and more stablizes and automatization's journey
Degree is high, test result more precisely reliable fan abnormal sound detecting system.
For achieving the above object, the present invention adopts the following technical scheme that
Fan abnormal sound detection method, comprises the steps of
S1, sense and identify fan to be measured because of vibration produce acceleration signal and the acoustical signal of fan to be measured；
S2, the acceleration signal gathering fan to be measured and acoustical signal；
S3, extract and treat by the acceleration signal of fan to be measured and acoustical signal being carried out frequency domain conversion and time domain conversion
Survey the characteristic of fan；
S4, anticipatory data to fan to be measured are modeled, and the characteristic of fan to be measured are carried out in anticipatory data
Contrast；
S5, according to whether there are differences between characteristic and anticipatory data and fan to be measured is carried out point by the size of difference
Class.
Further, in said fans abnormal sound detection method, step S1 also includes by being turned by the heat energy that fan to be measured produces
Changing the signal of telecommunication into thus obtain the heat energy signal of fan to be measured, step S2 also includes gathering this heat energy signal, and step S3 also includes
Changing by the heat energy signal of fan to be measured carries out frequency domain conversion and time domain, the characteristic in step S3, S4, S5 also includes
The characteristic extracted is changed by the heat energy signal of fan to be measured being carried out frequency domain conversion and time domain.
Fan abnormal sound detecting system, including:
Sensor assembly, including acceleration transducer and sound transducer, this acceleration transducer is used for identifying and transmitting
The acceleration signal that fan to be measured produces because of vibration, this sound transducer is for identifying and transmit the acoustical signal of fan to be measured；
Signal acquisition module, this signal acquisition module includes the NI9234 number for gathering acceleration signal and acoustical signal
According to capture card and for realizing the NI cDAQ-9188XT Ethernet cabinet that multi channel signals is measured, this NI9234 data acquisition
Truck connects acceleration transducer and sound transducer respectively, this NI9234 data collecting card be also connected with NI cDAQ-9188XT with
Too net cabinet；
The data handling system being arranged in computer, this data handling system includes that data based on Labview are changed
And characteristic extracting module and mathematical modeling based on Matlab analyze system module, should data based on Labview conversion and special
Levy extraction module and connect NI cDAQ-9188XT Ethernet cabinet and mathematical modeling based on Matlab analysis system module respectively,
It is somebody's turn to do data based on Labview conversion and characteristic extracting module for receiving the acceleration signal from signal acquisition module and sound
Tone signal also carries out feature extraction by the signal gathered carries out the conversion of time domain and frequency domain；Should mathematics based on Matlab
The anticipatory data of fan to be measured is modeled and by from data based on Labview conversion and spy by Modeling Analysis System module
Whether the characteristic levying extraction module contrasts with anticipatory data, there are differences according between this feature data and anticipatory data
And fan to be measured classified by the size of difference.
Further, sensor assembly also includes thermoelectric converter, and this thermoelectric converter is for producing fan to be measured
Heat energy is converted to the signal of telecommunication thus obtains the heat energy signal of fan to be measured, and this thermoelectric converter connects NI9234 data collecting card.
Preferably, thermoelectric converter comprises at least two the strip thermoelectricity thick films being in series through conductive metal sheet, should
Thermoelectricity thick film with antimony telluride powder be thermoelectricity conductive particle, with ethyl cellulose as binding agent, with terpineol for solvent preparation and
Becoming, the quality of antimony telluride powder and ethyl cellulose is 172:1 to 175:1 than scope, will be according to the load weighted tellurium of this mass ratio
Change antimony powder end is dispensed in the terpineol solution of ethyl cellulose makes slurry, then by the mode of silk screen printing or spin coating by this slurry
Strip thick film made by material, improves its consistency through isostatic cool pressing after strip thick film molding.
Preferably, the fineness of the antimony telluride powder of selection is 200 mesh.
Preferably, the pressure of isostatic cool pressing is 8MPa.
Preferably, the fan abnormal sound detecting system that the present invention provides also includes the fixed support for fixing fan to be measured,
This fixed support includes fixing seat, the column being arranged on fixing seat and the fixture being connected on column, and this fixture includes
Being molded into installation portion and the gripping portion of one, this installation portion through column, this installation portion is interspersed with one in mobilizable mode
With the screw rod of installation portion threaded engagement, this screw rod is positioned at one end of installation portion and forms one for pushing up pressure column with stationary fixture position
The top splenium put, is provided with flexible clamping plate for connecting inside the gripping portion of fan to be measured.
Preferably, it is provided with the installing hole for arranging sound transducer and acceleration transducer on outside gripping portion.
Preferably, column is provided with the scale of expression stem height.
The beneficial effects of the present invention is:
(1) collect signals collecting, analyze and be judged as one, reduce the erroneous judgement manually brought because limits judgment is inconsistent and ask
Topic；
(2) test is more stable, operated quickly and conveniently, and automaticity is high, saves labour turnover, and is conducive to improving and produces effect
Rate；
(3) according to the high precision collecting module of NI, the accuracy of detection and the reliability of testing result are substantially increased；
(4) strip thermoelectricity thick film be in series formed thermoelectric converter can expeditiously the heat condition of fan to be measured be turned
It is changed to the signal of telecommunication detect, overcomes the detection time short difficult problem being difficult to reflect fan heat condition to be measured；
(5) thermoelectricity thick film is prepared from by antimony telluride thermoelectric material, ethyl cellulose and terpineol, and wherein antimony telluride is to continue
Thermoelectric material emerging after Tellurobismuthite., possesses good thermoelectricity capability, and ethyl cellulose has bonding, filling, film forming etc. and makees
With, its water insoluble and Heat stability is good, ensure the stability of thermoelectric converter to a certain extent；
(6) ethyl cellulose and terpineol price for manufacturing other conventional materials of thermoelectricity thick film is the lowest
Honest and clean, and performance is excellent, and toxicity is small, contributes to reducing production cost while being conducive to ensureing health；
(7) thermoelectricity conductive particle antimony telluride powder and increasing to as the mass ratio between the ethyl cellulose of binding agent
172:1 to 175:1, significantly reduces the volume that binding agent is shared in thermoelectricity thick film on the premise of ensureing thick film energy molding
Ratio, substantially increases the volume ratio that thermoelectricity conductive particle is shared in thermoelectricity thick film in other words, thus improves thermoelectricity thick film
Thermoelectricity capability；
(8) inventor uses the merit of antimony telluride thermoelectricity thick film that thermoelectricity thick film preparation method provided by the present invention is prepared into
The rate factor reaches 0.27 mW/m K2, with reference to the periodical platform IOP SCIENCE being published in British royal physical society for 2011
On paper " Dispenser-printed planar thick-film thermoelectric energy
Generators " (printing legal system Two-Dimensional Heat electricity thick film energy generator), this paper with antimony telluride be thermoelectricity conductive particle, with ring
Epoxy resins is binding agent, and the power factor of the antimony telluride thermoelectricity thick film prepared is 0.16 mW/m K2, the present invention provides
Antimony telluride thermoelectricity thick film preparation method improves the conversion efficiency of thermoelectric of antimony telluride thermoelectricity thick film, be applied to fan detection in more have
It is beneficial to detect the heat condition of fan to be measured；
(9) use fixed support that fan to be measured is fixed, easily facilitate detection；
(10) it is provided with flexible clamping plate inside the gripping portion of fixture, enhances the tight journey of fixture and fan to be measured laminating
Degree, on the frequency of vibration as making fixture be in fan to be measured, it is to avoid affect abnormal sound detection because increasing fixture；
(11) it is provided with installing hole on outside the gripping portion of fixture, it is simple to sound transducer and acceleration transducer are carried out
Install, overcome sensor and be difficult to press close to a difficult problem for fan to be measured；
(12) fixture being used for gripping fan to be measured is connected to column by mobilizable form, can be according to actual needs
The height of alignment jig；
(13) it is provided with scale on column, beneficially the accurate adjustment of fixture height, thus is conducive to carrying of detection quality
High；
(14) use two fixed supports staggered relatively to grip fans to be measured simultaneously, make that fan to be measured is unsettled carries out abnormal sound
Detection, can get rid of because produced abnormal sound built on the sand placed by fan to be measured.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of fan abnormal sound detecting system of the present invention.
Fig. 2 is the FB(flow block) of fan abnormal sound detection method of the present invention.
Fig. 3 is the structural representation of thermoelectric converter in the present invention.
Reference: 1, thermoelectricity thick film；2, conductive metal sheet.
Detailed description of the invention
Below, in conjunction with accompanying drawing and detailed description of the invention, the present invention is described further:
Embodiment 1
As it is shown in figure 1, fan abnormal sound detecting system, including sensor assembly, signal acquisition module, data handling system and
Fixed support, sensor assembly includes acceleration transducer, sound transducer and thermoelectric converter, and this acceleration transducer is used for
Identifying and transmit the acceleration signal that fan to be measured produces because of vibration, this sound transducer is for identifying and transmit fan to be measured
Acoustical signal, this thermoelectric converter obtains the heat of fan to be measured for the heat that fan to be measured produces is converted to the signal of telecommunication
Can signal；Signal acquisition module includes the NI9234 data acquisition for gathering acceleration signal, acoustical signal and heat energy signal
Block and for realizing the NI cDAQ-9188XT Ethernet cabinet that multi channel signals is measured, this NI9234 data collecting card divides
Not connecting acceleration transducer, sound transducer and thermoelectric converter, this NI9234 data collecting card is also connected with NI cDAQ-
9188XT Ethernet cabinet；Data handling system is arranged in computer, and this data handling system includes number based on Labview
Analyze system module according to conversion and characteristic extracting module and mathematical modeling based on Matlab, should data based on Labview turn
Change and characteristic extracting module connects NI cDAQ-9188XT Ethernet cabinet and mathematical modeling of based on Matlab analysis system respectively
System module, is somebody's turn to do data based on Labview conversion and characteristic extracting module for receiving the acceleration from signal acquisition module
Signal, acoustical signal and heat energy signal also carry out feature extraction by the signal gathered carries out the conversion of time domain and frequency domain；Should
Mathematical modeling based on Matlab analyze system module the anticipatory data of fan to be measured is modeled and will from based on
The data conversion of Labview and the characteristic of characteristic extracting module contrast with anticipatory data, according to this feature data and
Whether there are differences between anticipatory data and fan to be measured is classified by the size of difference；
Fixed support includes fixing seat, the column being arranged on fixing seat and the fixture being connected on column, this folder
Tool includes being molded into installation portion and the gripping portion of one, and column is provided with the scale representing stem height, and this installation portion is with can
Movable mode, through column, this installation portion is interspersed with the screw rod of one and installation portion threaded engagement, and this screw rod is positioned at installation portion
Interior one end forms a top splenium being used for pushing up pressure column with stationary fixture position, for connecting inside the gripping portion of fan to be measured
Be provided with flexible clamping plate, strengthen gripping portion in the laminating compactness of fan to be measured, outside gripping portion on be provided with for arranging sound
Sound sensor and the installing hole of acceleration transducer.
Vibration produces acceleration, and acceleration transducer sensing transmission acceleration information, this acceleration information is after treatment
Can find out the Vibration Condition of fan to be measured intuitively, if using acceleration transducer to detect, the data detected are non-thread
Linearity curve, is difficult to observe the Vibration Condition of fan to be measured.
Embodiment 2
During as in figure 2 it is shown, fan abnormal sound detecting system of the present invention uses, comprise following detecting step:
Fan to be measured is held between two fixed supports by S1, two support bracket fastened gripping portions staggered relatively, according to
Practical situation adjusts fixture position on column；
S2, sound transducer and acceleration transducer are installed on the installing hole outside gripping portion, by thermoelectric converter
It is arranged on fan to be measured；
S3, open fan to be measured；
S4, acceleration transducer identification also transmit the acceleration signal that fan to be measured produces because of vibration, and sound transducer is known
Not and transmit the acoustical signal of fan to be measured, thermoelectric converter obtains by the heat energy that fan to be measured produces is converted to the signal of telecommunication
The heat energy signal of fan to be measured；
S5, NI9234 data collecting card collection carrys out the acceleration signal of acceleration sensor, from sound transducer
Acoustical signal and the heat energy signal from thermoelectric converter, and this acceleration signal, acoustical signal and heat energy signal are passed through NI
CDAQ-9188XT Ethernet cabinet is sent to data based on Labview conversion and characteristic extracting module；
The conversion of S6, data based on Labview and characteristic extracting module are by acceleration signal, acoustical signal and heat energy
Signal carries out time domain conversion and frequency domain changes the characteristic extracting fan to be measured, and by the characteristic transmission of fan to be measured
System module is analyzed to mathematical modeling based on Matlab；
S7, mathematical modeling based on Matlab are analyzed system module and are modeled the anticipatory data of fan to be measured and will treat
The characteristic surveying fan contrasts with anticipatory data；
S8, according to whether there are differences between this feature data and anticipatory data and fan to be measured is carried out by the size of difference
Classification.
Embodiment 3
As it is shown on figure 3, the thermoelectric converter that the present invention uses to comprise at least two be in series through conductive metal sheet 2 long
Strip thermoelectricity thick film 1, this thermoelectricity thick film 1 with the antimony telluride powder of 200 mesh be thermoelectricity conductive particle, with ethyl cellulose for bonding
Agent, being prepared from terpineol for solvent, the quality of antimony telluride powder and ethyl cellulose is 172:1 to 175:1 than scope, will
It is dispensed in the terpineol solution of ethyl cellulose according to this mass ratio load weighted antimony telluride powder and makes slurry, terpineol
Ethyl cellulose should just be dissolved by amount, if crossing major general to be not enough to ethyl cellulose dissolved, if too much will affect the thick of slurry
Degree, the most last quality of forming film, the amount of terpineol be obtainable empirical value after testing for several times, then with silk screen printing or rotation
This slurry is made strip thick film by the mode being coated with, and the terpineol as solvent is volatilized and cools down through Overheating Treatment by this strip thick film
To room temperature, within about ten seconds, improve its consistency through 8MPa isostatic cool pressing.
The power factor of the antimony telluride thermoelectricity thick film prepared reaches 0.27 mW/m K2, power factorFor Seebeck system
Number (Seebeck coefficient)Square and electrical conductivityProduct, according to the theory of Germany scientist Altenkirch, thermoelectricity turns
The thermoelectric material that transducing power is high should possess the higher electrical conductivity of higher Seebeck coefficient (Seebeck coefficient) and less heat
Conductance, wherein Seebeck coefficient (Seebeck coefficient) and power factor are conventional to pass judgment on the thermoelectricity capability of thermoelectric material.
It will be apparent to those skilled in the art that can technical scheme as described above and design, make other various
Corresponding change and deformation, and all these change and deformation all should belong to the protection domain of the claims in the present invention
Within.
Claims (7)
1. fan abnormal sound detection method, it is characterised in that comprise the steps of
S1, sense and identify fan to be measured because of vibration produce acceleration signal and the acoustical signal of fan to be measured, by treating
The heat energy that survey fan produces is converted to the signal of telecommunication thus obtains the heat energy signal of fan to be measured；
S2, the acceleration signal gathering fan to be measured and acoustical signal, gather this heat energy signal；
S3, change, by by be measured by the acceleration signal of fan to be measured and acoustical signal being carried out frequency domain conversion and time domain
The heat energy signal of fan carries out frequency domain conversion and time domain changes the characteristic extracting fan to be measured；
S4, anticipatory data to fan to be measured are modeled, and the characteristic of fan to be measured are contrasted in anticipatory data；
S5, according to whether there are differences between characteristic and anticipatory data and fan to be measured is classified by the size of difference.
2. fan abnormal sound detecting system, it is characterised in that including:
Sensor assembly, including acceleration transducer and sound transducer, this acceleration transducer is used for identifying and transmit to be measured
The acceleration signal that fan produces because of vibration, this sound transducer, for identifying and transmit the acoustical signal of fan to be measured, also wraps
Including thermoelectric converter, this thermoelectric converter obtains fan to be measured for the heat energy that fan to be measured produces is converted to the signal of telecommunication
Heat energy signal, this thermoelectric converter comprises at least two the strip thermoelectricity thick films being in series through conductive metal sheet, this thermoelectricity
Thick film with antimony telluride powder be thermoelectricity conductive particle, with ethyl cellulose as binding agent, be prepared from terpineol for solvent, tellurium
Changing the antimony powder end quality with ethyl cellulose is 172:1 to 175:1 than scope, will be according to this mass ratio load weighted telluride antimony powder
End is dispensed in the terpineol solution of ethyl cellulose makes slurry, then is made by this slurry by the mode of silk screen printing or spin coating
Strip thick film, improves its consistency through isostatic cool pressing after strip thick film molding；
Signal acquisition module, this signal acquisition module includes the NI9234 data acquisition for gathering acceleration signal and acoustical signal
Truck and for realize multi channel signals measure NI cDAQ-9188XT Ethernet cabinet, this NI9234 data collecting card
Connecting acceleration transducer and sound transducer respectively, thermoelectric converter connects NI9234 data collecting card, these NI9234 data
Capture card connects NI cDAQ-9188XT Ethernet cabinet；
The data handling system being arranged in computer, this data handling system includes data based on Labview conversion and spy
Levy extraction module and mathematical modeling based on Matlab analyzes system module, be somebody's turn to do data based on Labview conversion and feature carries
Delivery block connects NI cDAQ-9188XT Ethernet cabinet respectively and mathematical modeling based on Matlab analyzes system module, this base
Data in Labview are changed and characteristic extracting module is for receiving the acceleration signal from signal acquisition module and sound letter
Number and carry out feature extraction by the signal from signal acquisition module being carried out the conversion of time domain and frequency domain；Should be based on
The anticipatory data of fan to be measured is modeled and will be from based on Labview by the mathematical modeling analysis system module of Matlab
Data conversion and the characteristic of characteristic extracting module contrast with anticipatory data, according to this feature data and anticipatory data
Between whether there are differences and fan to be measured is classified by the size of difference.
3. fan abnormal sound detecting system as claimed in claim 2, it is characterised in that the fineness of this antimony telluride powder is 200 mesh.
4. fan abnormal sound detecting system as claimed in claim 2 or claim 3, it is characterised in that the pressure of isostatic cool pressing is 8MPa.
5. fan abnormal sound detecting system as claimed in claim 2, it is characterised in that also include two staggered relatively fixing
Frame, this fixed support is used for fixing fan to be measured, this fixed support include fixing seat, the column being arranged on fixing seat, with
And the fixture being connected on column, this fixture includes the installation portion being molded into one and gripping portion, and this installation portion is with mobilizable
Mode passes column, and this installation portion is interspersed with the screw rod of one and installation portion threaded engagement, and this screw rod is positioned at the one of installation portion
End forms a top splenium being used for pushing up pressure column with stationary fixture position, is provided with inside the gripping portion of fan to be measured for connecting
Flexible clamping plate.
6. fan abnormal sound detecting system as claimed in claim 5, it is characterised in that be provided with installing hole on outside gripping portion.
7. the fan abnormal sound detecting system as described in claim 5 or 6, it is characterised in that be provided with expression column on column high
The scale of degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050636.6A CN105588636B (en) | 2016-01-26 | 2016-01-26 | Fan abnormal sound detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050636.6A CN105588636B (en) | 2016-01-26 | 2016-01-26 | Fan abnormal sound detection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105588636A CN105588636A (en) | 2016-05-18 |
| CN105588636B true CN105588636B (en) | 2016-11-23 |
Family
ID=55928390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610050636.6A Active CN105588636B (en) | 2016-01-26 | 2016-01-26 | Fan abnormal sound detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105588636B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291283A (en) * | 2016-08-18 | 2017-01-04 | 济南学泰电子科技有限公司 | A kind of insulator monitoring instrument and monitoring method |
| CN106323456A (en) * | 2016-08-18 | 2017-01-11 | 济南学泰电子科技有限公司 | Sound detecting type electric power equipment operation state monitor and sound detecting type electric power equipment operation state monitoring method |
| CN109297582A (en) * | 2017-07-25 | 2019-02-01 | 台达电子电源(东莞)有限公司 | The detection device and detection method of fan abnormal sound |
| CN111457434B (en) * | 2020-04-15 | 2022-05-17 | 宁波方太厨具有限公司 | Range hood and resonance abnormal sound eliminating method thereof |
| TWI762122B (en) * | 2020-12-29 | 2022-04-21 | 建準電機工業股份有限公司 | Fan automatic detection system and fan automatic detection method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100323334B1 (en) * | 1999-02-18 | 2002-02-19 | 윤덕용 | A method of the predicting fan noise |
| CN101581622B (en) * | 2008-05-16 | 2011-08-24 | 台达电子工业股份有限公司 | Fan checking device |
| CN201292973Y (en) * | 2008-11-05 | 2009-08-19 | 元山科技工业股份有限公司 | Radiator fan device capable of display running noise |
| CN203249686U (en) * | 2013-05-20 | 2013-10-23 | 东莞市杰创电子测控科技有限公司 | Fan vibration testing system |
-
2016
- 2016-01-26 CN CN201610050636.6A patent/CN105588636B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105588636A (en) | 2016-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105588636B (en) | Fan abnormal sound detection system | |
| CN109164381B (en) | Method and device for online monitoring mechanical state and fault identification of high-voltage circuit breaker | |
| CN103674114B (en) | A kind of green building comprehensive detection device based on Zigbee | |
| CN106500900B (en) | A kind of Cable force measuring device and its measurement method | |
| CN205002878U (en) | Wireless vibration sensor | |
| CN103528493B (en) | A kind of printed circuit board stress-strain test system | |
| CN107436208B (en) | A kind of fully analytical model modeling method of condenser type wall shear stress sensor probe | |
| CN102520019B (en) | Resonant dew point measurement method | |
| CN109189008A (en) | A kind of sensor monitoring system based on electronic mark and cloud platform, convenient and fast detection data acquisition system and method | |
| CN106365009A (en) | Elevator door lock engagement depth detection device and detection method thereof | |
| CN107389255A (en) | High frequency sound pressure sensor based on direct current glow discharge plasma principle | |
| CN109358385A (en) | Intelligent batch calibrating meteorological sensing system and control method | |
| CN112068225A (en) | Electronic rainfall measuring device and method | |
| CN110991599B (en) | Paper count display device | |
| CN106932162B (en) | Track dynamic stiffness test method and system | |
| CN203672315U (en) | Stress-strain test system for printed circuit board | |
| CN205482773U (en) | Full -automatic eddy current displacement sensor static characteristic test system | |
| CN205593646U (en) | Different sound detecting system of fan | |
| CN107238493B (en) | A kind of piston ring radial rigidity test device | |
| CN201803792U (en) | Device for vibration test of light-weight fiber reinforced composite cantilever plate | |
| CN103076400A (en) | Novel corrosion probe based on vibration frequency and measurement system thereof | |
| CN111220662B (en) | Online real-time grain moisture monitoring system and method | |
| CN202947794U (en) | Acquisition testing device of vibration signal of body surface of transformer | |
| CN107702990A (en) | A kind of sound emission extensometer and its test method | |
| CN204924390U (en) | Detection apparatus for diaphragm type gas table equivalent gyration volume |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 519180 3rd Floor, Office Building, Building A, No. 5, Yangqing Street, Jing'an Town, Doumen District, Zhuhai City, Guangdong Province; Area A, First Floor, Building A Patentee after: Zhuhai Jingshi Measurement and Control Technology Co.,Ltd. Address before: 519180 3rd Floor, Office Building, Building A, No. 5, Yangqing Street, Jing'an Town, Doumen District, Zhuhai City, Guangdong Province; Area A, First Floor, Building A Patentee before: P&R. MEASUREMENT Inc. |
|
| CP01 | Change in the name or title of a patent holder |