CN207851251U - A kind of multiple unit failure acoustical signal harvester of wind-driven generator - Google Patents
A kind of multiple unit failure acoustical signal harvester of wind-driven generator Download PDFInfo
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- CN207851251U CN207851251U CN201721871491.2U CN201721871491U CN207851251U CN 207851251 U CN207851251 U CN 207851251U CN 201721871491 U CN201721871491 U CN 201721871491U CN 207851251 U CN207851251 U CN 207851251U
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Abstract
The utility model discloses a kind of multiple unit failure acoustical signal harvesters of wind-driven generator, including four acoustic emission sensors, signal amplification circuit, low-pass filter circuit, analog to digital conversion circuit, analog to digital conversion circuit, processor module, communication modules.Electric machine main shaft of four acoustic emission sensors for acquiring wind-driven generator respectively, gear-box, the voice signal at brake system and motor position, the input terminal of the analog signal output connection signal amplifying circuit of emission sensor, the input terminal of the output termination low-pass filter circuit of signal amplification circuit, the input terminal of low-pass filter circuit output termination analog to digital conversion circuit, the signal output end of the output termination processor module of analog to digital conversion circuit, the signal output end connection communication module of processor module, it is sent to monitoring terminal by communication module, convenient for monitoring the analysis and judgement of terminal.Compared with the prior art, the range of present apparatus monitoring is big, and the frequency range using acoustic emission sensor collected sound signal is wide.
Description
Technical field
Utility model belongs to wind-driven generator malfunction monitoring field, is related to a kind of wind-power electricity generation based on acoustic emission sensor
The monitoring system of the multiple component of machine failure.
Background technology
With the fast development of field of new energy technologies, wind power generating set installed capacity increases on a large scale, thus brings
Wind-driven generator the problem of safeguarding become increasingly conspicuous.Wind-driven generator have passed through high energy during converting wind energy into electric energy
The transmission and conversion of amount, prolonged mechanical energy, therefore main failure cause focuses mostly on mechanical wear and fracture in component.
The fault diagnosis technology of wind-driven generator mainly uses the method for diagnosing faults based on vibration signal, uses at this stage
Vibrating sensor acquisition signal it is difficult, of high cost and due to being that contact signal acquisition itself is more prone to damage.Wind-force is sent out
Continuous and stable voice signal is generated during motor operation, wind-driven generator is placed in height in the air almost without background environment
Sound, the technology in addition based on voice signal monitoring device failure is increasingly mature, by analyzing and determining institute's acquisition wind-driven generator
The voice signal of the multiple component of failure can effectively monitor the operating condition of wind-driven generator.
In the prior art, application No. is 201720186371.2 Chinese utility models to disclose one kind based on acoustics sensor
The gearbox fault signal pickup assembly of device array uses acoustic sensor array with crossing, effective to reduce noise jamming and put
Big microphone array signals, but it is more to solve the position that wind-driven generator breaks down, high frequency when wind-driven generator is run
The problem of processing of partial voice signal and monitoring process need quick response.
Utility model content
Goal of the invention：For the above-mentioned prior art, a kind of multiple unit failure acoustical signal acquisition dress of wind-driven generator is proposed
It sets, can effectively monitor the operating condition of the multiple component of wind-driven generator failure.
Technical solution：A kind of multiple unit failure acoustical signal harvester of wind-driven generator, including it is used to acquire wind-force hair
First acoustic emission sensor of electric machine main shaft position voice signal, for acquiring wind-driven generator wheel-box position voice signal
Second acoustic emission sensor, the third acoustic emission sensor for acquiring wind driven generator braking system position voice signal are used
Further include signal amplification circuit, low pass filtered in the falling tone emission sensor of acquisition wind-driven generator motor position voice signal
Wave circuit, analog to digital conversion circuit, processor module, communication module, first acoustic emission sensor, the second voice sending sensor
Device, third acoustic emission sensor, falling tone emission sensor analog signal be input to the input terminal of signal amplification circuit, it is described
The input terminal of the output termination low-pass filter circuit of signal amplification circuit, the low-pass filter circuit output termination analog-to-digital conversion electricity
The input terminal on road, the signal output end of the output termination processor module of analog-digital conversion circuit as described, the processor module
Signal output end connects the communication module.
Further, first acoustic emission sensor, the second acoustic emission sensor, third acoustic emission sensor, the 4th
The analog signal of acoustic emission sensor connects the signal amplification circuit by time-sharing multiplex circuit.
Further, the voltage signal of the signal amplification circuit output signal range 0-3V.
Further, the low-pass filter circuit is higher than 100KHz for filtering out in the signal that the amplifying circuit transmits out
High-frequency signal.
Further, the communication module is circuit carrier communication module.
Advantageous effect：The multiple unit failure acoustical signal harvester of wind-driven generator of the utility model can monitor simultaneously
The operation conditions at four positions of wind-driven generator, the range of monitoring is big, uses the frequency of acoustic emission sensor collected sound signal
Range is wide, and contactless mode acquires that signal itself to be hardly damaged and stability is good, is made using digital signal processor
For the core fast response time of processing module.It is single to solve monitoring position in existing technology, the sound signal frequencies model of acquisition
Enclose small, the problem of response time length.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present apparatus.
Specific implementation mode
Further explanation is done to the utility model below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of multiple unit failure acoustical signal harvester of wind-driven generator of the utility model, including four
A acoustic emission sensor, signal amplification circuit, low-pass filter circuit, analog to digital conversion circuit, analog to digital conversion circuit, processor die
Block, communication module.
Acoustic emission sensor 1 acquires the voice signal at wind driven generator principal shaft position, and acoustic emission sensor 2 acquires wind-force hair
The voice signal at motor gearbox position, acoustic emission sensor 3 acquire the voice signal at wind driven generator braking system position, sound
Emission sensor 4 acquires the voice signal at wind-driven generator motor position.
First acoustic emission sensor, the second acoustic emission sensor, third acoustic emission sensor, falling tone emission sensor
For analog signal output by the input terminal of time-sharing multiplex circuit connection signal amplifying circuit, the output termination of signal amplification circuit is low
The input terminal of bandpass filter circuit, low-pass filter circuit output termination analog to digital conversion circuit input terminal, analog to digital conversion circuit it is defeated
Go out to terminate the signal output end of processor module, the signal output end connection communication module of processor module.
In the present embodiment, acoustic emission sensor use D9241A type acoustic emission sensors, collected sound signal 0-100KHz,
Output voltage signal.The voltage signal that acoustic emission sensor exports is amplified within the scope of 0-3V by signal amplification circuit.Low pass filtered
The high-frequency signal that wave circuit will be above 100KHz filters out.Analog to digital conversion circuit is for converting analog signals into digital signal, so
After be sent to processor module.Processor module uses TMS320F28335 type digital signal processors as core processor.
TMS320F28335 has the high speed processing ability of 150MHz, has 32 floating point processing units, 6 DMA channels support ADC,
McBSP and EMIF has the PWM on up to 18 tunnels to export, wherein there is the PWM that 6 tunnels are the distinctive higher precisions of TI to export
(HRPWM), 12 16 channel ADC, use 5V power supply power supplies.
The multiple unit failure acoustical signal harvester of wind-driven generator of the utility model, using multiple acoustic emission sensors
The running sonic signal of the multiple component of wind-driven generator is acquired, the output of multiple sensors is by time-sharing multiplex circuit transmission to subsequently
Signal processing circuit, so as to rationally utilize hardware circuit, the failure rate for reducing power consumption, and reducing detecting system itself.
Processor module passes to monitoring according to transport protocol for controlling the digital signal that will be finally converted to by communication module
Terminal.In the present embodiment, communication module uses circuit carrier communication module, can be by signal by being loaded into wind-force hair after modulation
On the electric power signal line of electricity output, long-range monitoring terminal is transferred to by electric power signal line, relative to other wired or nothings
Line communication modes, this mode have the convenience of higher reliability and construction.Monitoring terminal passes through the analysis to digital signal
And judgement, fault pre-alarming or maintenance down are carried out according to result.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (5)
1. a kind of multiple unit failure acoustical signal harvester of wind-driven generator, it is characterised in that：Including being used to acquire wind-force hair
First acoustic emission sensor of electric machine main shaft position voice signal, for acquiring wind-driven generator wheel-box position voice signal
Second acoustic emission sensor, the third acoustic emission sensor for acquiring wind driven generator braking system position voice signal are used
Further include signal amplification circuit, low pass filtered in the falling tone emission sensor of acquisition wind-driven generator motor position voice signal
Wave circuit, analog to digital conversion circuit, processor module, communication module, first acoustic emission sensor, the second voice sending sensor
Device, third acoustic emission sensor, falling tone emission sensor analog signal be input to the input terminal of signal amplification circuit, it is described
The input terminal of the output termination low-pass filter circuit of signal amplification circuit, the low-pass filter circuit output termination analog-to-digital conversion electricity
The input terminal on road, the signal output end of the output termination processor module of analog-digital conversion circuit as described, the processor module
Signal output end connects the communication module.
2. the multiple unit failure acoustical signal harvester of wind-driven generator according to claim 1, it is characterised in that：It is described
The analog signal of first acoustic emission sensor, the second acoustic emission sensor, third acoustic emission sensor, falling tone emission sensor
The signal amplification circuit is connected by time-sharing multiplex circuit.
3. the multiple unit failure acoustical signal harvester of wind-driven generator according to claim 1, it is characterised in that：It is described
The voltage signal of signal amplification circuit output signal range 0-3V.
4. the multiple unit failure acoustical signal harvester of wind-driven generator according to claim 1, it is characterised in that：It is described
Low-pass filter circuit is used to filter out the high-frequency signal for being higher than 100KHz in the signal that the amplifying circuit transmits out.
5. the multiple unit failure acoustical signal harvester of wind-driven generator according to claim 1, it is characterised in that：It is described
Communication module is circuit carrier communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721871491.2U CN207851251U (en) | 2017-12-28 | 2017-12-28 | A kind of multiple unit failure acoustical signal harvester of wind-driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721871491.2U CN207851251U (en) | 2017-12-28 | 2017-12-28 | A kind of multiple unit failure acoustical signal harvester of wind-driven generator |
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| CN207851251U true CN207851251U (en) | 2018-09-11 |
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| CN201721871491.2U Active CN207851251U (en) | 2017-12-28 | 2017-12-28 | A kind of multiple unit failure acoustical signal harvester of wind-driven generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113063552A (en) * | 2021-05-13 | 2021-07-02 | 中密控股股份有限公司 | Mechanical seal state monitoring and collecting device |
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2017
- 2017-12-28 CN CN201721871491.2U patent/CN207851251U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113063552A (en) * | 2021-05-13 | 2021-07-02 | 中密控股股份有限公司 | Mechanical seal state monitoring and collecting device |
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