CN107622765A - Transformer station's active noise reduction combination unit - Google Patents
Transformer station's active noise reduction combination unit Download PDFInfo
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- CN107622765A CN107622765A CN201610550191.8A CN201610550191A CN107622765A CN 107622765 A CN107622765 A CN 107622765A CN 201610550191 A CN201610550191 A CN 201610550191A CN 107622765 A CN107622765 A CN 107622765A
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- main body
- transformer station
- noise reduction
- described device
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Abstract
The invention discloses a kind of transformer station's active noise reduction combination unit, including apparatus main body, the lower end both sides of described device main body are mounted on connecting plate, and the side of connecting plate is provided with fixing device, the inwall of described device main body is provided with acoustic board, the upper end of described device main body is provided with attachment means, and the side of attachment means is provided with sub- connecting pole, the inner chamber upper end of described device main body is provided with denoising device, the inner chamber of the denoising device is provided with magnification circuit plate, the lower end of the magnification circuit plate is provided with feedback circuit plate, the lower end of the feedback circuit plate is provided with transformer station's attachment means, and the lower end of transformer station's attachment means extends to the outside of denoising device, the inner chamber both sides of described device main body are mounted on drive device.The present invention uses simple, install convenient so that user is having a good noise reduction using process, is user-friendly for using.
Description
Technical field
The present invention relates to noise reduction technology field, more particularly to a kind of transformer station's active noise reduction to combine the unit.
Background technology
Intrinsically, active noise reduction is equivalent to the circuit that a part of negative-feedback is introduced in original system（Open loop or
Person's closed loop has）, so as to can significantly weaken amplitude, power and the decibel of original noise signal in reality output, reach real
The purpose of border noise reduction.Principle core concept is exactly the self-stabilization principle of feedback and system.The instrument system of active noise reduction is mainly wrapped
Include microphone, amplifier, phase modulation apparatus, power amplifier and loudspeaker.It is a kind of can to reduce microphone adjacent area acoustic pressure
Electroacoustic degeneration factor.Received acoustic pressure is changed into corresponding voltage by microphone, and voltage amplification is arrived by amplifier
Input voltage required by anti-phase device, inverted device give 180 ° of the phase change of this voltage to power amplifier, work(
Loudspeaker is promoted it is produced equal in magnitude with original acoustic pressure and opposite in phase acoustic pressure after rate amplification, the two acoustic pressures are each other
Repeal by implication, reach the purpose for reducing noise.In order to effectively realize anti-sound effect, under the various equipment used should meet respectively
State requirement.1. microphone：In the range of frequency of use, the phase change for acting on acoustic pressure and output voltage answers very little；Have constant
Proportionate relationship, that is, there is straight Frequency Response；Sensitivity will height.2. loudspeaker：The output transformer and loudspeaker coupling of amplifier
During conjunction, voltage often produces sizable phase place change.To avoid this phenomenon, the loudspeaker used in anti-audio technology is preferably with resistance
It is anti-higher and with the connection of transformerless direct coupling type.To ensure that the loudspeaker used in anti-sound system is simply to radiate
Device, there should be raising one's voice in casket for high efficiency sound absorption processing installed in inwall.For make loudspeaker in defined frequency range substantially
Straight Frequency Response is kept, the porous acoustic resistance of one layer of silk piece goods at the rear portion of its magnetic field structure, can be added.3. amplifying circuit：
It is required that frequency response is straight, phase place change at different levels is little；At different levels occur without regeneration and positive feedback.In order to avoid high frequency is maked a whistling sound
Cry, the method for making output signal increase with frequency and declining can be used.What active noise reduction system can reach under ideal conditions
Noise reduction,.But the composition of the noise frequency in environment is very complicated and intensity is with time jitter, often in some frequency ranges and position
On noise offseted, and increased in other frequency range and position, it is difficult to reach preferable effect.
But existing active noise reduction is in the good practicality of transformer station's technical field neither one so that transformer station is in work
Make the good noise reduction process of process neither one so that user is using the comfortable working environment of process neither one, simultaneously
In the denoising device using process, neither one detachable effect well, many inconvenience is brought to user.
The content of the invention
The invention aims to solve shortcoming present in prior art, and a kind of transformer station's active noise reduction proposed
Combination unit.
To achieve these goals, present invention employs following technical scheme：Transformer station's active noise reduction combination unit, including
Apparatus main body, the lower end both sides of described device main body are mounted on connecting plate, and the side of connecting plate is provided with fixing device, described
The inwall of apparatus main body is provided with acoustic board, and the both sides of acoustic board are mounted on loudspeaker arrangement, the upper end peace of described device main body
Side equipped with attachment means, and attachment means is provided with sub- connecting pole, and the inner chamber upper end of described device main body is provided with noise reduction
Device, the inner chamber of the denoising device are provided with magnification circuit plate, and the lower end of the magnification circuit plate is provided with feedback circuit plate,
The lower end of the feedback circuit plate is provided with transformer station's attachment means, and the lower end of transformer station's attachment means extends to denoising device
Outside, the inner chamber both sides of described device main body are mounted on drive device, and side of the drive device away from apparatus main body is set
There is firm plate.
Preferably, the lower end of described device main body is provided with transformer station's holder, and the lower end of apparatus main body is provided with anti-slip veins.
Preferably, the inner chamber of the denoising device is provided with microphone, and microphone jade loudspeaker arrangement is electrically connected with.
Preferably, the acoustic board is located at the inwall of apparatus main body, and the upper end of apparatus main body is provided with connection hole, the company
The inwall for connecing hole is provided with sealant.
In the present invention, by using the mode of external-added noise reduction, realize and the working environment of transformer station is carried out effectively
Noise reduction process, more easy-to-use and more comfortable working environments are brought to user, while the device is using process
It is user-friendly for mounting and dismounting, has saved the time and efforts of user, while the device is easy to operate, convenient use
Person is used so that user is having a good convenience using process.
Brief description of the drawings
Fig. 1 is the structural representation of transformer station's active noise reduction proposed by the present invention combination unit.
In figure：1 connecting pole, 2 attachment means, 3 magnification circuit plates, 4 acoustic boards, 5 denoising devices, 6 loudspeaker arrangements, 7 devices
Main body, 8 feedback circuit plates, 9 transformer station's attachment means, 10 firm plates, 11 drive devices, 12 fixing devices, 13 connecting plates.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.
Reference picture 1, transformer station's active noise reduction combination unit, including apparatus main body 7, the lower end both sides of apparatus main body 7 are pacified
Equipped with connecting plate 13, and the side of connecting plate 13 is provided with fixing device 12, and the inwall of apparatus main body 7 is provided with acoustic board 4, and absorbs sound
The both sides of plate 4 are mounted on loudspeaker arrangement 6, and the upper end of apparatus main body 7 is provided with attachment means 2, and the side peace of attachment means 2
Equipped with sub- connecting pole 1, the inner chamber upper end of apparatus main body 7 is provided with denoising device 5, and the inner chamber of denoising device 5 is provided with amplification electricity
Road plate 3, the lower end of magnification circuit plate 3 are provided with feedback circuit plate 8, and the lower end of feedback circuit plate 8 is provided with transformer station's connection dress
9 are put, and the lower end of transformer station's attachment means 9 extends to the outside of denoising device 5, the inner chamber both sides of apparatus main body 7 are mounted on
Drive device 11, and side of the drive device 11 away from apparatus main body 7 is provided with firm plate 10, the lower end of apparatus main body 7, which is provided with, to be become
Power station holder, and the lower end of apparatus main body 7 is provided with anti-slip veins, the inner chamber of denoising device 5 is provided with microphone, and microphone is beautiful
Loudspeaker arrangement is electrically connected with, and acoustic board 4 is located at the inwall of apparatus main body 7, and the upper end of apparatus main body 7 is provided with connection hole, connection
The inwall of hole is provided with sealant.The present invention uses simple, install convenient so that user is having one well using process
Noise reduction, it is user-friendly for using.
The present invention realizes by using the mode of external-added noise reduction and carries out effective noise reduction to the working environment of transformer station
Processing, more easy-to-use and more comfortable working environments are brought to user, while the device is convenient using process
User is mounted and dismounted, and has saved the time and efforts of user, while the device is easy to operate, and convenient use person enters
Exercise and use so that user is having a good convenience using process.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (2)
1. transformer station's active noise reduction combination unit, including apparatus main body（7）, it is characterised in that described device main body（7）Lower end
Both sides are mounted on connecting plate（13）, and connecting plate（13）Side be provided with fixing device（12）, described device main body（7）It is interior
Wall is provided with acoustic board（4）, and acoustic board（4）Both sides be mounted on loudspeaker arrangement（6）, described device main body（7）Upper end peace
Equipped with attachment means（2）, and attachment means（2）Side sub- connecting pole is installed（1）, described device main body（7）Inner chamber on
End is provided with denoising device（5）, the denoising device（5）Inner chamber magnification circuit plate is installed（3）, the magnification circuit plate
（3）Lower end feedback circuit plate is installed（8）, the feedback circuit plate（8）Lower end transformer station's attachment means are installed（9）,
And transformer station's attachment means（9）Lower end extend to denoising device（5）Outside, described device main body（7）Inner chamber both sides it is equal
Drive device is installed（11）, and drive device（11）Away from apparatus main body（7）Side be provided with firm plate（10）, described device
Main body（7）Lower end be provided with transformer station's holder, and apparatus main body（7）Lower end be provided with anti-slip veins, the denoising device（5）'s
Inner chamber is provided with microphone, and microphone jade loudspeaker arrangement is electrically connected with.
2. transformer station's active noise reduction combination unit according to claim 1, it is characterised in that the acoustic board（4）It is located at
Apparatus main body（7）Inwall, apparatus main body（7）Upper end be provided with connection hole, it is described connection hole inwall be provided with sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610550191.8A CN107622765A (en) | 2016-07-14 | 2016-07-14 | Transformer station's active noise reduction combination unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610550191.8A CN107622765A (en) | 2016-07-14 | 2016-07-14 | Transformer station's active noise reduction combination unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107622765A true CN107622765A (en) | 2018-01-23 |
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ID=61086974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610550191.8A Pending CN107622765A (en) | 2016-07-14 | 2016-07-14 | Transformer station's active noise reduction combination unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107622765A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281902A (en) * | 2018-03-01 | 2018-07-13 | 武汉理工大学 | A kind of electric automatization with positioning function heat dissipation type electrical cabinet |
-
2016
- 2016-07-14 CN CN201610550191.8A patent/CN107622765A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281902A (en) * | 2018-03-01 | 2018-07-13 | 武汉理工大学 | A kind of electric automatization with positioning function heat dissipation type electrical cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180123 |
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| WD01 | Invention patent application deemed withdrawn after publication |