CN206772429U - Noise source tests and analyzes device - Google Patents
Noise source tests and analyzes device Download PDFInfo
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- CN206772429U CN206772429U CN201720503692.0U CN201720503692U CN206772429U CN 206772429 U CN206772429 U CN 206772429U CN 201720503692 U CN201720503692 U CN 201720503692U CN 206772429 U CN206772429 U CN 206772429U
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Abstract
The utility model discloses a kind of noise source to test and analyze device, including：Signal gathering unit, and sound monitoring unit, vibration monitoring unit and the data processing unit being connected respectively with the signal gathering unit；There is a predetermined distance, and sound monitoring unit is towards the measurand between the sound monitoring unit and measurand；The vibration monitoring unit is installed in the measurand.The noise source detection and analysis device of this new offer, processing can be carried out using the experimental data monitored and is used as analysis foundation, traditional experience measurement is abandoned, it is obviously improved analysis precision, simultaneously, the present apparatus is easy to implement, saves cost, thus can with it is convenient, effectively noise source is identified and analyzed at the scene.
Description
Technical field
It the utility model is related to noise sources identification, more particularly to a kind of noise source detection and analysis device.
Background technology
Reduce noise, it is necessary to Main Noise Sources are detected and identified, it is well known that vibration and noise breath breath,
But traditional vibration measurement method only measures by rule of thumb, and no analysis of experimental data does basis, causes analysis precision relatively low；In addition,
Using special acoustic enviroment is established in anechoic room to measurement noise source, it involves great expense and discomfort is fit to do on-the-spot test.
Utility model content
The purpose of this utility model is to provide a kind of noise source detection and analysis device, for it is convenient, efficiently identify and divide
Analyse noise source.
The technical solution adopted in the utility model is as follows：
A kind of noise source tests and analyzes device, including：
Signal gathering unit, and sound monitoring unit, the vibration monitoring list being connected respectively with the signal gathering unit
Member and data processing unit；
There is a predetermined distance, and sound monitoring unit is towards institute between the sound monitoring unit and measurand
State measurand；The vibration monitoring unit is installed in the measurand；
The sound monitoring unit monitors the acoustic signals of the measurand, and the acoustic signals are sent to described
Signal gathering unit；
The vibration monitoring unit monitors the vibration signal of the measurand, and the vibration signal is sent to described
Signal gathering unit；
The data processing unit is getting the acoustic signals and the vibration that the signal gathering unit is sent
After signal, data analysis is carried out to the acoustic signals and the vibration signal.
Preferably, the signal gathering unit includes analog input module, digital output module and analog-to-digital conversion module；
The sound monitoring unit and the vibration monitoring unit are connected to the analog input module, the data processing unit connection
To the digital output module；The sound monitoring unit and the vibration monitoring unit are by the acoustic signals and the vibration
Signal is sent to the analog input module；After analog-to-digital conversion module processing, the digital output module is again by institute
State acoustic signals and the vibration signal is sent to the data processing unit.
Preferably, the sound monitoring unit includes：Sound receiving module and preamplifier, and the sound receives mould
Block is towards the measurand.
Preferably, the vibration monitoring unit includes piezo-electric effect module.
Preferably, the sound monitoring unit is microphone, and the vibration monitoring unit is acceleration transducer, the letter
Number collecting unit is multi-channel signal acquiring device, and the data processing unit is computer or industrial computer.
Preferably, it is soft with the data processing that coherence analysis are combined to be built-in with spectrum analysis for the computer or industrial computer
Part.
Preferably, the acceleration transducer includes angular acceleration transducer and/or linear acceleration transducer.
Preferably, the sound monitoring unit is arranged at the top of the measurand.
Preferably, the vibration monitoring unit is bonded with the measurand by adhesive.
Preferably, the sound monitoring unit and vibration monitoring unit pass through shielded conductor and the signal acquisition list respectively
Member connection.
The noise source detection and analysis device of this new offer, is simulated by the sound and vibration that are sent to measurand
Amount collection, then is sent to data processing unit after being changed by signal gathering unit, then by the frequency spectrum built in data processing unit with
The analysis software of phase dry-mate connection does digitization analysis to the signal of collection, so that it is determined that the noise source having a great influence, after progress
Continuous processing；The present apparatus has been abandoned traditional experience measurement, has been obviously improved analysis precision, together based on analysis of experimental data
When, the present apparatus is easy to implement, compares that to build anechoic room cost substantially cheap, therefore can be conveniently and effectively at the scene to noise source
It is identified and analyzed.
Brief description of the drawings
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type is further described, wherein：
Fig. 1 is the block diagram that noise source provided by the utility model tests and analyzes device.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the utility model, and can not be construed to of the present utility model
Limitation.
A kind of this new embodiment for providing noise source and testing and analyzing device, as shown in figure 1, including：
Signal gathering unit, and monitor list with the sound for being used to monitor acoustic signals that signal gathering unit is connected respectively
Member, vibration monitoring unit and data processing unit for monitoring the vibration signal as caused by mechanical oscillation；Wherein, in order to avoid
The localized sound wave disturbance in surface near field, sound monitoring unit can be arranged on the top of measurand, and between measurand
With a predetermined distance, meanwhile, sound monitoring unit is towards measurand；Further, vibration monitoring unit be installed in it is tested
On object, in practical operation, to cause vibration monitoring unit that during measurand is vibrated, quilt can be monitored well
Survey the vibration of object, it may be considered that adhesive is coated between vibration monitoring unit and measurand, so that the two good fit；
In practical operation, the working method of the present apparatus can be：Sound monitoring unit and vibration monitoring unit are tested by what is monitored
The acoustic signals and vibration signal that object is sent are converted into voltage or current signal, then are converted into numeral by signal gathering unit
Sent after signal to data processing unit and carry out Data Analysis Services.
Specifically, signal gathering unit can include analog input module, digital output module and analog-to-digital conversion mould
Block；Sound monitoring unit and vibration monitoring unit are connected to analog input module, and data processing unit is connected to numeral output mould
Block；Further, aforementioned sound monitoring unit can include sound receiving module and preamplifier, and the sound receives mould
Block is towards measurand, and specifically, sound receiving module can be microphone；And vibration monitoring unit can include piezoelectricity and imitate
Module is answered, the slight crystalline substance for changing (vibration) and causing its inside occurs using the displacement of measurand according to piezo-electric effect principle in it
Body deformation characteristic, so as to monitor the vibratory output of measurand.
Based on the above-mentioned explanation to each unit, the following equipment construction present apparatus can be selected in practical operation：Sound is supervised
Survey unit and select microphone；Vibration monitoring unit selects angular acceleration transducer and/or linear acceleration transducer, and wherein angle accelerates
Degree sensing implement body can be angular accelerometer, and for monitoring rotation displacement, linear acceleration transducer is used to monitor linearly；Signal
Collecting unit selects multi-channel signal acquiring device, can be specifically the recording instrument without paper such as 4 passages, 8 passages or 12 passages；At data
Reason unit is from the computer or industrial computer for being built-in with the data processing software that spectrum analysis is combined with coherence analysis.
For example, in the horizontal layout microphone above measurand at 30-35cm, and by the microphone court of microphone
To measurand, explanation is needed exist for, the quantity of microphone and position can be adjusted as the case may be；Accelerating
Spend sensor before the mounting, its surface to be mounted is cleaned using nytron solution, by cyanoacrylate adhesive
Equably it is applied between acceleration transducer and measurand, both is bonded reliably, certainly, can also makes under certain conditions
With modes such as magnet, it is bonded both, it should be noted that, the quantity and installation site of acceleration transducer can equally regard tool in addition
Depending on body situation；Then, by wire, specifically, it is to receive interference from signal transmission, shielded conductor can be used, will
Microphone and acceleration transducer are connected with the analog input end of multi-channel signal acquiring device, and multi-channel signal acquiring device
Digital output end is then connected to the FPDP of computer or industrial computer, can use RS232, RS485, USB, Profi- here
The connected mode such as BUS or Ethernet, it is originally new that this is not construed as limiting.It is to be herein pointed out before being tested and analyzed,
It is also conceivable to spectrum analysis is debugged with the Noise Sources Identification and process of measurement that coherence analysis are combined, to ensure the whole series
System can normal use, reuse standard source after modulation program demarcated, and to the phase mismatch of Measurement channel
It is corrected, so as to ensure that measurement error is less than 1dB in 125Hz~5kHz frequency range；Then, you can to proceed by
Measurement, the sound wave and vibration signal of measurand are gathered by microphone and acceleration transducer, and pass through multi-channel signal acquiring
After the analog-to-digital conversion module conversion of device, then export to computer or industrial computer, carry out necessary computing and record etc., it is necessary to illustrate
, during detection and analysis, the state of test environment keeps constant.Then, experiment number computer or industrial computer recorded
According to being handled, analyzed with spectrum analysis with the Noise Sources Identification and process of measurement that coherence analysis are combined, so that it may obtain noise
With vibration dominant frequency and coherence factor, the noise calculated according to software and the vibration coherence of each vibration pickup point, it is determined that
Main Noise Sources.
Construction, feature and action effect of the present utility model is described in detail according to the embodiment shown in schema above, but
Preferred embodiment of the present utility model be the foregoing is only, it is necessary to explain, involved by above-described embodiment and its preferred embodiment
Technical characteristic, those skilled in the art can not depart from, not change mentality of designing of the present utility model and technique effect
On the premise of, reasonably combination collocation is into a variety of equivalents；Therefore, the utility model does not implement model to be limited shown in drawing
Enclose, it is every according to the made change of conception of the present utility model, or be revised as the equivalent embodiment of equivalent variations, still without departing from saying
, all should be in the scope of protection of the utility model when bright book is with illustrating covered spirit.
Claims (10)
1. a kind of noise source tests and analyzes device, it is characterised in that including：
Signal gathering unit, and be connected respectively with the signal gathering unit sound monitoring unit, vibration monitoring unit and
Data processing unit；
There is a predetermined distance, and sound monitoring unit is towards the quilt between the sound monitoring unit and measurand
Survey object；The vibration monitoring unit is installed in the measurand；
The sound monitoring unit monitors the acoustic signals of the measurand, and the acoustic signals are sent to the signal
Collecting unit；
The vibration monitoring unit monitors the vibration signal of the measurand, and the vibration signal is sent to the signal
Collecting unit；
The data processing unit is getting the acoustic signals and the vibration signal that the signal gathering unit is sent
Afterwards, data analysis is carried out to the acoustic signals and the vibration signal.
2. analytical equipment according to claim 1, it is characterised in that the signal gathering unit includes simulation input mould
Block, digital output module and analog-to-digital conversion module；
The sound monitoring unit and the vibration monitoring unit are connected to the analog input module, the data processing unit
It is connected to the digital output module；
The sound monitoring unit and the vibration monitoring unit send the acoustic signals and the vibration signal to described
Analog input module；
After analog-to-digital conversion module processing, the digital output module is again by the acoustic signals and the vibration signal
Send to the data processing unit.
3. analytical equipment according to claim 2, it is characterised in that the sound monitoring unit includes：Sound receives mould
Block and preamplifier, and the sound receiving module is towards the measurand.
4. analytical equipment according to claim 3, it is characterised in that the vibration monitoring unit includes piezo-electric effect mould
Block.
5. according to the analytical equipment described in any one of Claims 1 to 4, it is characterised in that the sound monitoring unit is transaudient
Device, the vibration monitoring unit are acceleration transducer, and the signal gathering unit is multi-channel signal acquiring device, the data
Processing unit is computer or industrial computer.
6. analytical equipment according to claim 5, it is characterised in that the computer or industrial computer are built-in with spectrum analysis
With the data processing software that coherence analysis are combined.
7. analytical equipment according to claim 6, it is characterised in that the acceleration transducer senses including angular acceleration
Device and/or linear acceleration transducer.
8. analytical equipment according to claim 7, it is characterised in that the sound monitoring unit is arranged at described tested pair
The top of elephant.
9. analytical equipment according to claim 7, it is characterised in that the vibration monitoring unit leads to the measurand
Cross adhesive fitting.
10. analytical equipment according to claim 7, it is characterised in that the sound monitoring unit and vibration monitoring unit
It is connected respectively by shielded conductor with the signal gathering unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720503692.0U CN206772429U (en) | 2017-05-08 | 2017-05-08 | Noise source tests and analyzes device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720503692.0U CN206772429U (en) | 2017-05-08 | 2017-05-08 | Noise source tests and analyzes device |
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| Publication Number | Publication Date |
|---|---|
| CN206772429U true CN206772429U (en) | 2017-12-19 |
Family
ID=60649447
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720503692.0U Expired - Fee Related CN206772429U (en) | 2017-05-08 | 2017-05-08 | Noise source tests and analyzes device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540282A (en) * | 2018-11-23 | 2019-03-29 | 中国船舶重工集团公司第七〇九研究所 | A kind of hydrodynamic noise identifing source and isolated test macro and its building method |
| CN110160640A (en) * | 2018-05-18 | 2019-08-23 | 李文杰 | Acoustic power level hemisphere measuring surface method detects the method that console mode toilet seat rinses noise |
| CN110160632A (en) * | 2018-05-18 | 2019-08-23 | 李文杰 | Acoustic energy grade cylindrical measurement face method detects the method that ceramic pedestal pan rinses noise |
| CN110160635A (en) * | 2018-05-18 | 2019-08-23 | 李文杰 | A weighted acoustic energy grade mensuration detects sanitary ware to the method for/draining noise |
| CN110706468A (en) * | 2019-10-18 | 2020-01-17 | 北京声科测声学技术有限公司 | Wireless distributed signal acquisition system |
| CN113267249A (en) * | 2021-05-12 | 2021-08-17 | 杭州仁牧科技有限公司 | Multi-channel noise analysis system and analysis method based on big data |
-
2017
- 2017-05-08 CN CN201720503692.0U patent/CN206772429U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160640A (en) * | 2018-05-18 | 2019-08-23 | 李文杰 | Acoustic power level hemisphere measuring surface method detects the method that console mode toilet seat rinses noise |
| CN110160632A (en) * | 2018-05-18 | 2019-08-23 | 李文杰 | Acoustic energy grade cylindrical measurement face method detects the method that ceramic pedestal pan rinses noise |
| CN110160635A (en) * | 2018-05-18 | 2019-08-23 | 李文杰 | A weighted acoustic energy grade mensuration detects sanitary ware to the method for/draining noise |
| CN110160635B (en) * | 2018-05-18 | 2021-02-12 | 李文杰 | Method for detecting sanitary ware water supply/drainage noise by A weighting acoustic energy level measurement method |
| CN110160640B (en) * | 2018-05-18 | 2021-02-26 | 李文杰 | Method for detecting flushing noise of floor type toilet by sound power level hemisphere measuring surface method |
| CN109540282A (en) * | 2018-11-23 | 2019-03-29 | 中国船舶重工集团公司第七〇九研究所 | A kind of hydrodynamic noise identifing source and isolated test macro and its building method |
| CN109540282B (en) * | 2018-11-23 | 2024-04-19 | 中国船舶重工集团公司第七一九研究所 | Hydrodynamic noise source identification and separation testing system and construction method thereof |
| CN110706468A (en) * | 2019-10-18 | 2020-01-17 | 北京声科测声学技术有限公司 | Wireless distributed signal acquisition system |
| CN113267249A (en) * | 2021-05-12 | 2021-08-17 | 杭州仁牧科技有限公司 | Multi-channel noise analysis system and analysis method based on big data |
| CN113267249B (en) * | 2021-05-12 | 2024-06-14 | 杭州仁牧科技有限公司 | Multichannel noise analysis system and analysis method based on big data |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 Termination date: 20200508 |
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| CF01 | Termination of patent right due to non-payment of annual fee |