CN206845399U - A kind of Wind turbines noise test data acquisition unit - Google Patents
A kind of Wind turbines noise test data acquisition unit Download PDFInfo
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- CN206845399U CN206845399U CN201720111627.3U CN201720111627U CN206845399U CN 206845399 U CN206845399 U CN 206845399U CN 201720111627 U CN201720111627 U CN 201720111627U CN 206845399 U CN206845399 U CN 206845399U
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- chip
- speed sampling
- data acquisition
- signal processing
- digital signal
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Abstract
It the utility model is related to a kind of Wind turbines noise test data acquisition unit, including conditioning chip, middling speed sampling A/D chip, usb interface controller, host computer, be parallel with middling speed sampling A/D chip and high-speed sampling chip on the conditioning chip；The middling speed sampling A/D chip and high-speed sampling chip are connected with digital signal processing chip；The digital signal processing chip is connected by usb interface controller with host computer, Wind turbines noise test data acquisition unit of the present utility model, new standard can be met, integrated level is high, and data acquisition function is stable, while meteorologic signal uses wireless transmission method, improve data acquisition efficiency, manpower and materials are saved, meet actual testing requirement, there is higher promotional value.
Description
Technical field
The utility model belongs to wind power generation field, more particularly to a kind of Wind turbines noise test data acquisition unit.
Background technology
Wind turbines can have an impact the noise of surrounding environment in normal operation, and domestic and international environmental administration produces to wind power plant
Raw noise size requirements are more and more strict, according to new standard IEC 61400-11-2012, it is necessary to which the signal of measurement mainly has three
Class：Acoustic signal, meteorologic signal and unit signal, data acquisition unit need these signals being transferred to data acquisition in real time
In computer, so as to meet the various demands of people.
The noise test data acquisition unit built at present is primarily present following two problems：（1）Existing noise test number
According to being collector mostly according to old plant（IEC61400-11-2006）Build, and new standard（IEC61400-11-2012）
Data acquisition request has done many changes, and integrated level is low so that existing noise test data acquisition unit can not adapt to reality
Border job requirement；（2）Cable data signal transmission form is used for meteorological data, but because wind power plant present position is remote
Require harsh with noise testing, and wind power plant noise testing anemoscope volume is larger, is necessarily expended during carrying a large amount of
Manpower and the time, considerably increase workload in real work, extend the actual test time, reduce operating efficiency,
Meet new standard, the high high Wind turbines noise data collector of data acquisition efficiency simultaneously of integrated level so as to be badly in need of one kind.
Utility model content
The purpose of the utility model be for overcome the deficiencies in the prior art and new standard, and data can be met by providing one kind
Collecting efficiency is high, the high Wind turbines noise test data acquisition unit of integrated level.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：A kind of Wind turbines noise test data are adopted
Storage, including conditioning chip, for the meteorologic signal received and the high-frequency interferencing signal adulterated in acoustic signal to be rejected
And amplified signal, and meteorologic signal and acoustic signal are sent to middling speed sampling A/D chip respectively and high-speed sampling chip is adopted
Collection；Middling speed sampling A/D chip, for gathering the meteorologic signal of conditioning chip transmission, and it is sent to digital signal processing chip；At a high speed
Sampling A/D chip, for gathering the acoustic signal of conditioning chip transmission, and it is sent to digital signal processing chip；Digital Signal Processing
Chip, for receive middling speed sampling A/D chip and high-speed sampling chip collection meteorologic signal and acoustic signal after counted accordingly
According to transferring data to usb interface controller after processing, and control conditioning chip, middling speed sampling A/D chip and high-speed sampling chip
Start and stop；Usb interface controller, the data for digital signal processing chip to be sent are transferred to host computer；Host computer, for connecing
Shown after receiving the data that usb interface controller is sent, and send data acquisition signal to digital signal processing chip；It is described
Middling speed sampling A/D chip and high-speed sampling chip are parallel with conditioning chip；The middling speed sampling A/D chip and high-speed sampling chip with
Digital signal processing chip is connected；The digital signal processing chip is connected by usb interface controller with host computer.
Preferably, wireless chip is also communicated with the conditioning chip, for meteorologic signal to be radioed into conditioning core
Piece；The digital signal processing chip is connected with wireless chip, for controlling the start and stop of wireless chip.
Preferably, it is additionally provided with data buffering device between the digital signal processing chip and usb interface controller.
Preferably, in addition to power module；The power module is connected with conditioning chip, for supplying its voltage；It is described
Power module also by linear voltage regulator respectively with wireless chip, middling speed sampling A/D chip, high-speed sampling chip and data signal
Process chip is connected.
Preferably, the wireless chip is NRF905, and its external antenna.
Preferably, the conditioning chip is low pass filter.
Preferably, the sample frequency of the middling speed sampling A/D chip is 200Msps;The sample frequency of the high-speed sampling chip
For 10Msps.
Due to the utilization of above-mentioned technical proposal, the utility model has following advantages compared with prior art：This practicality is new
The Wind turbines noise test data acquisition unit of type scheme, new standard can be met, integrated level is high, and data acquisition function is stable,
Meteorologic signal uses wireless transmission method simultaneously, improves data acquisition efficiency, saves manpower and materials, meet actual test
Demand, there is higher promotional value.
Brief description of the drawings
Technical solutions of the utility model are described further below in conjunction with the accompanying drawings.
Accompanying drawing 1 is circuit theory schematic diagram of the present utility model.
Wherein：1- conditioning chips；2- middling speed sampling A/D chips；3- high-speed sampling chips；4- digital signal processing chips；5-
Usb interface controller；6- host computers；7- wireless chips；8- data buffering devices；9- power modules；10- linear voltage regulators.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail.
A kind of Wind turbines noise test data acquisition unit described in the utility model as shown in Figure 1, including conditioning
Chip 1, for the meteorologic signal received and the high-frequency interferencing signal adulterated in acoustic signal to be rejected into simultaneously amplified signal, and
Meteorologic signal and acoustic signal are sent to middling speed sampling A/D chip 2 respectively and high-speed sampling chip 3 is acquired；Middling speed samples core
Piece 2, for gathering the meteorologic signal of the transmission of conditioning chip 1, and it is sent to digital signal processing chip 4；High-speed sampling chip, use
In the acoustic signal that collection conditioning chip 1 is sent, and it is sent to digital signal processing chip 4；Digital signal processing chip 4, use
Carried out after the meteorologic signal and acoustic signal of middling speed sampling A/D chip 2 and the collection of high-speed sampling chip 3 is received at corresponding data
Usb interface controller 5 is transferred data to after reason, and controls conditioning chip 1, middling speed sampling A/D chip 2 and high-speed sampling chip 3
Start and stop；Usb interface controller 5, the data for digital signal processing chip 4 to be sent are transferred to host computer 6；Host computer 6, use
Shown after the data of the transmission of usb interface controller 5 are received, and send data acquisition signal to digital signal processing chip
4；Middling speed sampling A/D chip 2 and high-speed sampling chip 3 are parallel with the conditioning chip 1；The middling speed sampling A/D chip 2 and high speed are adopted
Sample chip 3 is connected with digital signal processing chip 4；The digital signal processing chip 4 by usb interface controller 5 with
Host computer 6 is connected；Wireless chip 7 is also communicated with the conditioning chip 1, for meteorologic signal to be radioed into conditioning core
Piece 1；The digital signal processing chip 4 is connected with wireless chip 7, for controlling the start and stop of wireless chip 7；The numeral letter
Number data buffering device 8 is additionally provided between process chip 4 and usb interface controller 5；Also include power module 9；The power supply mould
Block 9 is connected 1 with conditioning chip, for supplying its voltage；The power module 9 also by linear voltage regulator 10 respectively with without core
Piece 7, middling speed sampling A/D chip 2, high-speed sampling chip 3 and digital signal processing chip 4 are connected；The wireless chip 7 is
NRF905, and its external antenna；The conditioning chip 1 is low pass filter；The sample frequency of the middling speed sampling A/D chip 2 is
200Msps;The sample frequency of the high-speed sampling chip 3 is 10Msps.
Specific workflow is as described below：Device electrification reset, digital signal processing chip receive the number from host computer
According to collection commencing signal, digital signal processing chip control middling speed sampling A/D chip and high-speed sampling core are started working, middling speed sampling
Chip and high-speed sampling chip start to carry out data acquisition to meteorologic signal and acoustic signal respectively；When middling speed sampling A/D chip and height
After fast sampling A/D chip starts a data acquisition data acquisition of completion, digital signal processing chip is sent interrupts in time, numeral
Signal processing chip receives the relevant data signals from middling speed sampling A/D chip and high-speed sampling chip, and carries out corresponding data
Processing；While digital signal processing chip data is handled, middling speed sampling A/D chip and high-speed sampling chip carry out next simultaneously
Secondary digital-to-analogue conversion, after digital signal processing chip has been handled, data are sent to host computer by usb interface controller.
Specifically, digital signal processing chip is during to signal transacting, it is main to include to meteorologic signal and acoustics
The processing of signal, meteorological sampled signal is carried out to store to host computer after 1S data are average, acoustic sampling signal is carried out first
FIR is filtered, and then carrying out A weighted filter factors to data is filtered, and 1S data are integrated and can obtain acoustic signal
Continuous Equivalent A weighted sound pressure level.
Further, wireless chip is additionally provided with conditioning chip, it is opened by digital signal processing chip
And stopping, so as to allow meteorologic signal data to use wireless transmission method, improve data acquisition efficiency；In above-mentioned Wind turbines noise
NRF905, power attenuation 10mW, external antenna, 200 ~ 300 meters of direct line of sight transmission range are used in test data collection device.
Further, data buffering device, such energy are increased between usb interface controller and digital signal processing chip
Enough solves uncoordinated, the guarantee efficiency of transmission between the processing speed and USB transmission speed of Digital Signal Processing.
In follow-up signal transacting, the requirement of meteorologic signal and acoustic signal to sample frequency is different, in data sampling
Process, meteorologic signal includes the signal such as temperature, wind speed, air pressure, and A/D module needs sampling rate to want more, institute for middling speed and passage
To employ 16 successive approximation ADC middling speed sampling A/D chip, it has the characteristics that high accuracy, low-power consumption；Gather acoustics letter
Number when, its precision will require high with sampling rate, therefore employ 14 successive approximation ADC high-speed sampling chip, and it is most
High sampling rate can reach 62MSPS.
Wherein, the voltage that power module provides is 5V, and the voltage needed for conditioning chip operation is 5V, and other
Voltage needed for wireless chip, middling speed sampling A/D chip, high-speed sampling chip and digital signal processing chip is 3.3V, therefore uses line
Property voltage-stablizer by 5V voltage conversions be 3.3V said chip is transmitted again.
Wind turbines noise test data acquisition unit of the present utility model, new standard can be met, integrated level is high, and data are adopted
Collect function-stable, while meteorologic signal uses wireless transmission method, improves data acquisition efficiency, saves manpower and materials, meets
Actual testing requirement, has a higher promotional value.
It the above is only concrete application example of the present utility model, do not form any limit to the scope of protection of the utility model
System.All technical schemes formed using equivalent transformation or equivalent replacement, all fall within the utility model rights protection scope it
It is interior.
Claims (7)
- A kind of 1. Wind turbines noise test data acquisition unit, it is characterised in that：IncludingConditioning chip, for rejecting and amplifying the meteorologic signal received and the high-frequency interferencing signal adulterated in acoustic signal Signal, and meteorologic signal and acoustic signal are sent to middling speed sampling A/D chip respectively and high-speed sampling chip is acquired；Middling speed sampling A/D chip, for gathering the meteorologic signal of conditioning chip transmission, and it is sent to digital signal processing chip；High-speed sampling chip, for gathering the acoustic signal of conditioning chip transmission, and it is sent to digital signal processing chip；Digital signal processing chip, for receiving the meteorologic signal and acoustics letter of middling speed sampling A/D chip and the collection of high-speed sampling chip Usb interface controller is transferred data to after corresponding data processing is carried out after number, while controls conditioning chip, middling speed sampling core The start and stop of piece and high-speed sampling chip；Usb interface controller, the data for digital signal processing chip to be sent are transferred to host computer；Host computer, shown after the data for receiving usb interface controller transmission, and send data acquisition signal to numeral Signal processing chip；Middling speed sampling A/D chip and high-speed sampling chip are parallel with the conditioning chip；The middling speed sampling A/D chip and high-speed sampling Chip is connected with digital signal processing chip；The digital signal processing chip passes through usb interface controller and host computer It is connected.
- 2. Wind turbines noise test data acquisition unit according to claim 1, it is characterised in that：On the conditioning chip Wireless chip is also communicated with, for meteorologic signal to be radioed into conditioning chip；The digital signal processing chip with it is wireless Chip is connected, for controlling the start and stop of wireless chip.
- 3. Wind turbines noise test data acquisition unit according to claim 2, it is characterised in that：At the data signal Data buffering device is additionally provided between reason chip and usb interface controller.
- 4. Wind turbines noise test data acquisition unit according to claim 3, it is characterised in that：Also include power supply mould Block；The power module is connected with conditioning chip, for supplying its voltage；The power module is also distinguished by linear voltage regulator It is connected with wireless chip, middling speed sampling A/D chip, high-speed sampling chip and digital signal processing chip.
- 5. the Wind turbines noise test data acquisition unit according to claim 2 or 4, it is characterised in that：The no core Piece is NRF905, and its external antenna.
- 6. Wind turbines noise test data acquisition unit according to claim 1, it is characterised in that：The conditioning chip is Low pass filter.
- 7. Wind turbines noise test data acquisition unit according to claim 1, it is characterised in that：The middling speed samples core The sample frequency of piece is 200Msps；The sample frequency of the high-speed sampling chip is 10Msps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720111627.3U CN206845399U (en) | 2017-02-07 | 2017-02-07 | A kind of Wind turbines noise test data acquisition unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720111627.3U CN206845399U (en) | 2017-02-07 | 2017-02-07 | A kind of Wind turbines noise test data acquisition unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206845399U true CN206845399U (en) | 2018-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720111627.3U Expired - Fee Related CN206845399U (en) | 2017-02-07 | 2017-02-07 | A kind of Wind turbines noise test data acquisition unit |
Country Status (1)
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|---|---|
| CN (1) | CN206845399U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801447A (en) * | 2018-07-06 | 2018-11-13 | 零零二信息科技（沧州）有限责任公司 | A kind of wind energy conversion system noise measuring system and test method |
| CN109884415A (en) * | 2019-03-25 | 2019-06-14 | 中国科学院武汉物理与数学研究所 | The detection device and method of metal surface electric field noise |
-
2017
- 2017-02-07 CN CN201720111627.3U patent/CN206845399U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801447A (en) * | 2018-07-06 | 2018-11-13 | 零零二信息科技（沧州）有限责任公司 | A kind of wind energy conversion system noise measuring system and test method |
| CN109884415A (en) * | 2019-03-25 | 2019-06-14 | 中国科学院武汉物理与数学研究所 | The detection device and method of metal surface electric field noise |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180105 Termination date: 20180207 |