CN105635914A - Active noise reduction device used for outdoor power transformation box - Google Patents
Active noise reduction device used for outdoor power transformation box Download PDFInfo
- Publication number
- CN105635914A CN105635914A CN201610106104.XA CN201610106104A CN105635914A CN 105635914 A CN105635914 A CN 105635914A CN 201610106104 A CN201610106104 A CN 201610106104A CN 105635914 A CN105635914 A CN 105635914A
- Authority
- CN
- China
- Prior art keywords
- signal
- noise
- unit
- signals
- sends
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses an active noise reduction device used for an outdoor power transformation box. The active noise reduction device mainly comprises a noise acquisition unit, a computing control unit, a signal production unit, a signal amplification unit, a signal generation unit and a power unit; the noise acquisition unit comprises a sound sensor capable of acquiring noise signals in an environment; the noise acquisition unit is connected with the computing control unit and sends the acquired noise signals to the computing control unit; the computing control unit is connected with the signal production unit and sends noise cancellation signals which are obtained in real time through computation and have the phase opposite to that of a characteristic noise signal to the signal production unit; the signal production unit is connected with the signal amplification unit; the signal amplification unit is connected with the signal generation unit; the signal production unit sends analogue noise cancellation signals which are converted from the digital noise cancellation signals to the signal amplification unit for signal amplification; and connected electro-acoustic transduction components convert electrical signals into sound signals and send the sound signals to cancel the noise signals in the environment.
Description
Technical field
The present invention relates to a kind of active noise reducing device for outdoor transforming box, be mainly used in the active noise reducing device of the indoor and outdoor power transformation box of the artificial abortion City Regions such as community, shopping centre.
Background technology
Along with urban construction scale develops, in order to meet the needs of urban network reconstruction, some middle-size and small-size or combined transformers (hereinafter referred to as transformator) need to be arranged close in (or directly installing) resident and shopping centre. Problem of noise pollution as the main body transformator of allocation transformer equipment noise progressively manifests. Therefore, the noise reducing transformator has caused attention widely and has paid close attention to. Existing transformator noise reduction mode has the disadvantage that: (1) closed blimp uses traditional sound insulation technology, and going the same way for noise cannot be completely isolated, and transformator is heater members, and transformator heat radiation can be produced impact by blimp form used. (2) the sound insulation transformation of transformer base damping and transformation cooling fan rigidity dialysis form, although the noise owing to mechanical shock produces can be greatly decreased, but the low frequency noise produced for inside transformer self vibration is almost without effect, and transforms complexity, somewhat expensive.
Summary of the invention
It is an object of the invention to the deficiency overcoming prior art to exist, and provide a kind of simple in construction, easy to use, it is possible to suitable in the transformer equipment of various sizes size, it is convenient to dismount, the active noise reducing device for outdoor transforming box of reliable operation.
It is an object of the invention to complete by following technical solution, a kind of active noise reducing device for outdoor transforming box, it mainly includes Noise Acquisition unit, Operations Analysis, signal generating unit, signal amplification unit and signal generation unit and power subsystem, described Noise Acquisition unit includes one can gather the sound transducer of noise signal in environment, this Noise Acquisition unit is connected with Operations Analysis and is sent to Operations Analysis by gathering the noise signal returned, described Operations Analysis is connected signal generating unit and sends the counteracting noise signal drawn in real time by computing with characteristic noise signal inversion to signal generating unit, described connection signal generating unit connects signal amplification unit, signal generation unit is connected by signal amplification unit, the simulation counteracting noise signal counteracting noise signal of numeral converted to by signal generating unit is delivered to signal amplification unit and carries out signal amplification, deliver to signal generation unit to obtain the counteracting noise signal after amplifying, power transmission sound transducer part through being connected converts the electrical signal to acoustical signal and sends, to offset the noise signal in environment.
Described power subsystem is that complete equipment provides corresponding running voltage, and the domestic noise of noise reduction ring is carried out real-time sampling and noise signal is converted to the signal of telecommunication sends Operations Analysis to by Noise Acquisition unit; Operations Analysis reads Noise Acquisition unit in real time and transmits the noise signal of telecommunication of coming, first the noise signal of telecommunication is converted to the digital signal of noise, extract real-time noise characteristic signal noise characteristic signal is carried out anti-phase calculation process by built-in feature algorithm, anti-phase computing complete after noise characteristic digital signal be sent to active signal generating unit; Active signal generating unit converts the digital signal of acquisition to analogue signal, and analogue signal is sent to active signal amplifying unit; Analogue signal is carried out voltage and power amplification by active signal amplifying unit, sends the signal of amplification to active signal generation unit; The analogue signal that active signal generation unit is sent here promotes, and produces the sound wave of needs for offsetting the signal of noise.
The present invention has simple in construction, easy to use, it is possible to suitable in the transformer equipment of various sizes size, dismount the features such as convenient, reliable operation.
Accompanying drawing explanation
Fig. 1 is the structure composition schematic diagram of the present invention.
Fig. 2 is the oscillogram of environmental noise of the present invention.
Fig. 3 is that phase reversal of the present invention can the oscillogram of offset noise.
Fig. 4 is the composite wave-shape figure that two sound waves of the present invention cancel each other.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be described in detail: shown in Fig. 1, a kind of active noise reducing device for outdoor transforming box of the present invention, it mainly includes Noise Acquisition unit 1, Operations Analysis 2, signal generating unit 3, signal amplification unit 4 and signal generation unit 5 and power subsystem 6, described Noise Acquisition unit 1 includes one can gather the sound transducer of noise signal in environment, this Noise Acquisition unit 1 is connected with Operations Analysis 2 and is sent to Operations Analysis 2 by gathering the noise signal returned, described Operations Analysis 2 is connected signal generating unit 3 and sends the counteracting noise signal drawn in real time by computing with characteristic noise signal inversion to signal generating unit 3, described connection signal generating unit 3 connects signal amplification unit 4, signal generation unit 5 is connected by signal amplification unit 4, the simulation counteracting noise signal counteracting noise signal of numeral converted to by signal generating unit 3 is delivered to signal amplification unit 4 and carries out signal amplification, deliver to signal generation unit 5 to obtain the counteracting noise signal after amplifying, power transmission sound transducer part through being connected converts the electrical signal to acoustical signal and sends, to offset the noise signal in environment, see shown in Fig. 2-4.
Embodiment: power subsystem 6 of the present invention is powered to total system. Noise Acquisition unit 1 gathers the noise signal in environment by sound transducer, gather the noise signal returned and be sent to Operations Analysis 2, in Operations Analysis 2, Operations Analysis 2 first converts the noise signal of collection to digital signal, then pass through built-in algorithms and extract numerical characteristic noise signal, by computing real-time draw the counteracting noise signal with characteristic noise signal inversion, offset noise signal and send to signal generating unit 3; Signal generating unit 3 converts the counteracting noise signal of numeral to analogue signal, and delivers to signal amplification unit 4; Signal amplification unit 4 obtains the counteracting noise signal of simulation, and is amplified to by signal sufficiently large, delivers to signal generation unit 5; Signal generation unit 5 obtains the counteracting noise signal after amplifying power transmission sound transducer part, converts the electrical signal to acoustical signal by electroacoustic transduction parts and sends, offsets original noise signal, reach the purpose of noise reduction in space.
Claims (1)
1. the active noise reducing device for outdoor transforming box, it mainly includes Noise Acquisition unit (1), Operations Analysis (2), signal generating unit (3), signal amplification unit (4) and signal generation unit (5) and power subsystem (6), it is characterized in that described Noise Acquisition unit (1) includes one and can gather the sound transducer of noise signal in environment, this Noise Acquisition unit (1) is connected with Operations Analysis (2) and is sent to Operations Analysis (2) by gathering the noise signal returned, described Operations Analysis (2) is connected signal generating unit (3) and sends the counteracting noise signal drawn in real time by computing with characteristic noise signal inversion to signal generating unit (3), described connection signal generating unit (3) connects signal amplification unit (4), signal generation unit (5) is connected by signal amplification unit (4), the simulation counteracting noise signal that the counteracting noise signal of numeral will be converted to by signal generating unit (3) is delivered to signal amplification unit (4) and is carried out signal amplification, deliver to signal generation unit (5) to obtain the counteracting noise signal after amplifying, power transmission sound transducer part through being connected converts the electrical signal to acoustical signal and sends, to offset the noise signal in environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610106104.XA CN105635914A (en) | 2016-02-26 | 2016-02-26 | Active noise reduction device used for outdoor power transformation box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610106104.XA CN105635914A (en) | 2016-02-26 | 2016-02-26 | Active noise reduction device used for outdoor power transformation box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105635914A true CN105635914A (en) | 2016-06-01 |
Family
ID=56050329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610106104.XA Pending CN105635914A (en) | 2016-02-26 | 2016-02-26 | Active noise reduction device used for outdoor power transformation box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105635914A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201805492U (en) * | 2010-10-13 | 2011-04-20 | 康佳集团股份有限公司 | A television device |
| CN102223428A (en) * | 2011-06-24 | 2011-10-19 | 中兴通讯股份有限公司 | Noise reducing method and mobile terminal |
| CN203672481U (en) * | 2013-10-21 | 2014-06-25 | 国家电网公司 | Electric equipment noise detection device |
| CN204516562U (en) * | 2015-04-22 | 2015-07-29 | 深圳供电局有限公司 | A kind of active noise reduction of power transformer device |
| CN205510367U (en) * | 2016-02-26 | 2016-08-24 | 国家电网公司 | A active noise reduction device for outdoor transformer case |
-
2016
- 2016-02-26 CN CN201610106104.XA patent/CN105635914A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201805492U (en) * | 2010-10-13 | 2011-04-20 | 康佳集团股份有限公司 | A television device |
| CN102223428A (en) * | 2011-06-24 | 2011-10-19 | 中兴通讯股份有限公司 | Noise reducing method and mobile terminal |
| CN203672481U (en) * | 2013-10-21 | 2014-06-25 | 国家电网公司 | Electric equipment noise detection device |
| CN204516562U (en) * | 2015-04-22 | 2015-07-29 | 深圳供电局有限公司 | A kind of active noise reduction of power transformer device |
| CN205510367U (en) * | 2016-02-26 | 2016-08-24 | 国家电网公司 | A active noise reduction device for outdoor transformer case |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203444957U (en) | Transformer self-adaptation active noise reduction device | |
| WO2017000814A1 (en) | Active noise control system | |
| CN107240404B (en) | Noise reduction method for prefabricated cabin type transformer substation | |
| CN105840462A (en) | Active noise-eliminating and noise-reducing system of compressor | |
| CN103592628A (en) | Multi-sound-source positioning method based on formation of real value weight beam in spherical harmonic domain | |
| CN103440861A (en) | Self-adaption noise reduction device for low frequency noise in indoor environment | |
| CN111145715B (en) | Active noise control system and control method for fan | |
| CN104279738A (en) | Method, device and system for reducing noise of air conditioning unit | |
| TWI584268B (en) | A robot indoor noises control system | |
| CN106057189A (en) | Indoor active noise reduction apparatus | |
| CN201985737U (en) | Noise power generator | |
| CN205510367U (en) | A active noise reduction device for outdoor transformer case | |
| CN204516562U (en) | A kind of active noise reduction of power transformer device | |
| CN203902837U (en) | Helicopter paddle antiphase muffler device | |
| CN105635914A (en) | Active noise reduction device used for outdoor power transformation box | |
| CN108278438B (en) | Active control device and method for pipeline noise | |
| CN110650412A (en) | Drying processing method and device, terminal and storage medium | |
| CN203708066U (en) | Mobile phone charged in voice-activated mode | |
| CN106419954A (en) | Method for vibration restoration of stethoscope | |
| CN205433647U (en) | Osteoacusis sleep monitor device | |
| CN204649949U (en) | Nuclear magnetic resonance imaging system denoising device | |
| CN203547837U (en) | Engine noise reduction controller | |
| CN204084797U (en) | The noise reduction system of air-conditioner set | |
| WO2021022390A1 (en) | Active noise reduction system and method, and storage medium | |
| CN202982024U (en) | Signal following denoising circuit for X-ray machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160601 |