CN104064176A - Indoor noise elimination device - Google Patents
Indoor noise elimination device Download PDFInfo
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- CN104064176A CN104064176A CN201410333288.4A CN201410333288A CN104064176A CN 104064176 A CN104064176 A CN 104064176A CN 201410333288 A CN201410333288 A CN 201410333288A CN 104064176 A CN104064176 A CN 104064176A
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Abstract
The invention provides an indoor noise elimination device. The indoor noise elimination device comprises a noise collector, a backward wave frequency transmitter and a controller. The noise collector is used for measuring the waveform and frequency of external noise in a preset direction and transmitting external noise collection signals. The backward wave frequency transmitter is used for attenuating or offsetting noise energy and can emit backward sound waves with the same frequency as the external noise in the direction opposite to the direction of the external noise, or can form a wave attenuating energy field region on a noise transmission channel, wherein the wave attenuating energy field region can prevent the external noise from entering a room. The controller is used for receiving the external noise collection signals and controlling the working status of the backward wave frequency transmitter according to the external noise waveform and frequency corresponding to the external noise collection signals. According to the indoor noise elimination device, the noise collector is used for measuring the external noise, and the controller is used for controlling the backward wave frequency transmitter to eliminate the noise, so that active elimination of the noise is achieved, the effect of noise elimination is improved, and the noise pollution is reduced.
Description
Technical field
The reduction environmental noise technology category that the present invention relates to field of Environment Protection, more particularly, relates to a kind of room noise cancellation element.
Background technology
In the epoch of scientific and technological fast development, cities and towns process of industrialization is accelerated, no matter be common residential quarter, or the public place such as school, hospital, noise problem is day by day serious.Reducing noise is the important content of environmental protection work.Conventionally measure is the sound insulation and noise reduction adopting in sealing physical space.House is the main place that people lives, mainly by body of wall and door and window sealing, formed, the sound insulation function of body of wall is better than door and window position widely, so the sound insulation of door and window is noiseproof weak link, its effect directly has influence on the level of comfort of household, is the significant points of environmental protection insulation works.
Traditional sound arrester is the soundproof window being comprised of the glass of multilayer different-thickness and window frame, and in soundproof window, is filled with acoustic absorbant, and every layer of glass is all used the pugging through special processing.During use, make to reach between soundproof window and body of wall good sealing, by airtight space of indoor formation, soundproof window can utilize the glass with pugging to carry out physical isolation to noise like this, and utilizes the sound wave of the abundant heat absorbing glass of acoustic absorbant, and then reduces noise pollution.But the soundproof effect of above-mentioned isolation window depends on the own speciality of glass, pugging and acoustic absorbant, the elimination of noise is more passive, and noise eradicating efficacy is poor.
In sum, how improving noise eradicating efficacy, to reduce noise pollution, is current those skilled in the art technical matterss urgently to be resolved hurrily.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of room noise cancellation element, to improve noise eradicating efficacy, and then reduce noise pollution.
In order to achieve the above object, the invention provides following technical scheme:
A room noise cancellation element, comprising:
Noise gathering device, described noise gathering device is for measuring waveform and the frequency of the ambient noise of presetting orientation and sending ambient noise collection signal;
For decaying or the backward wave of the offset noise energy emitter that takes place frequently, the described backward wave emitter that takes place frequently can be launched the reverse sound wave of, opposite direction identical with described ambient noise frequency or can on noise conduction pathway, produce and form the described ambient noise of prevention and entered indoor wave absorption energy field region;
Controller, described controller is for receiving described ambient noise collection signal and controlling the take place frequently duty of emitter of described backward wave according to the corresponding ambient noise waveform of described ambient noise collection signal and frequency status.
Preferably, in above-mentioned room noise cancellation element, described backward wave takes place frequently emitter for launching the noise transmitter of described reverse sound wave, and described controller receives after described ambient noise collection signal to be controlled described noise transmitter synchronization according to the corresponding waveform of described ambient noise collection signal and frequency status and launch the reverse sound wave with described ambient noise same frequency, same waveform.
Preferably, in above-mentioned room noise cancellation element, also comprise:
Be arranged on outdoor outdoor traversing carriage, described noise gathering device, described noise transmitter and described controller are all arranged on described outdoor traversing carriage;
Room noise collector, described room noise collector is for gathering waveform and the frequency of room noise, and can be according to the waveform of the reverse sound wave of noise transmitter transmitting described in the waveform of described room noise and frequency correction and frequency to reduce described room noise.
Preferably, in above-mentioned room noise cancellation element, described noise transmitter is 4, is separately positioned on the place, four window angles outside described window; And described noise transmitter is directional diffuse reflection formula transmitter.
Preferably, in above-mentioned room noise cancellation element, also comprise:
Be arranged on indoor indoor moving support, described noise gathering device, described noise transmitter and described controller are all arranged on described indoor moving support;
Be arranged on the azimuth lock of described indoor moving support, the transmit direction that described azimuth lock can be adjusted described reverse sound wave makes described reverse sound wave and described ambient noise on window or predeterminable area face outside window, superpose decay to eliminate described ambient noise, and described azimuth lock is arranged on the pipeline opening of sending of described noise transmitter.
Preferably, in above-mentioned room noise cancellation element, described backward wave takes place frequently emitter for making outdoor formation stop described ambient noise to enter the indoor backward wave waveform transmitters of barrier region frequently;
Described room noise cancellation element also comprises:
The vibrating mass that is arranged on described window and is sealed and matched with described window, described waveform transmitters can be launched the described vibrating mass of sening as an envoy to and be produced the vibration wave of vibrations, described waveform transmitters send pipeline opening towards described vibrating mass; Described controller receive after described ambient noise collection signal according to the corresponding waveform of described ambient noise collection signal and frequency status control described waveform transmitters produce with the ripple of described ambient noise oppositely, the vibration wave of same frequency, same waveform, described controller is connected with described waveform transmitters with described noise gathering device respectively.
Preferably, in above-mentioned room noise cancellation element, described vibrating mass is the forms at described window place or is arranged on the vibrating diaphragm on described forms outside surface.
Preferably, in above-mentioned room noise cancellation element, described backward wave takes place frequently emitter for can make window produce the magnetic field producer in wave absorption magnetic field outward, the energy field of described ambient noise can be decayed or adsorb in described wave absorption magnetic field, and described controller controls according to the corresponding waveform of described ambient noise collection signal and frequency status the wave absorption magnetic field that described magnetic field producer produces the magnetic field intensity corresponding with described ambient noise after receiving described ambient noise collection signal.
From above-mentioned technical scheme, can find out, room noise cancellation element room noise cancellation element provided by the invention comprises noise gathering device, backward wave take place frequently emitter and controller; Wherein, noise gathering device is for measuring waveform and the frequency of the ambient noise of presetting orientation and sending ambient noise collection signal; Backward wave takes place frequently emitter for decay or offset noise energy, can launch the reverse sound wave of, opposite direction identical with ambient noise frequency or can on noise conduction pathway, produce and form prevention ambient noise to enter indoor wave absorption energy field region; Controller is for receiving ambient noise collection signal and controlling the take place frequently duty of emitter of backward wave according to the corresponding ambient noise waveform of ambient noise collection signal and frequency status.
The present invention by noise gathering device, measure default orientation ambient noise waveform and frequency and send ambient noise collection signal, by controller, receive ambient noise collection signal and control the take place frequently duty of emitter of backward wave according to the corresponding ambient noise waveform of ambient noise collection signal and frequency status; Make the backward wave emitter that takes place frequently launch reverse sound wave identical with ambient noise frequency, opposite direction, thereby reverse sound wave and ambient noise are superposeed mutually, offset or weaken, realize compacting noise; Or make the backward wave emitter that takes place frequently on noise conduction pathway, produce and form and stop ambient noise to enter indoor wave absorption energy field region, in this region, realize and intercept noise, and then decay or offset noise energy, reach the object of shielding noise; That is to say that the present invention according to ambient noise degree of strength, initiatively corresponding energy field region is set, blocks noise admission passage, at this region effective attenuation or offset noise energy, sealing noise is in outdoor; Realized and initiatively eliminated environmental noise, built the effect of squelch.
Because noise is actual, be a kind ofly with the ripple energy that frequently form is propagated, both can accurately detect also and can oppositely suppress and shield, so the present invention can utilize the backward wave emitter that takes place frequently to adopt the pattern of energy offset or shielding to improve noise eradicating efficacy.
In summary, room noise cancellation element of the present invention is measured ambient noise by noise gathering device, controls the backward wave emitter that takes place frequently abate the noise by controller, has realized initiatively and having abated the noise, and has improved noise eradicating efficacy, and then has reduced noise pollution.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of embodiment of room noise cancellation element provided by the invention;
Fig. 2 is the structural representation of the another kind of embodiment of room noise cancellation element provided by the invention;
Fig. 3 is the structural representation of the third embodiment of room noise cancellation element provided by the invention.
Embodiment
The embodiment of the present invention provides a kind of room noise cancellation element, has improved noise eradicating efficacy, and then has reduced noise pollution.
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to accompanying drawing 1-3, the room noise cancellation element that the embodiment of the present invention provides comprises noise gathering device 1, backward wave take place frequently emitter and controller; Wherein, noise gathering device 1 is for measuring waveform and the frequency of the ambient noise of presetting orientation and sending ambient noise collection signal; Backward wave takes place frequently emitter for decay or offset noise energy, can launch the reverse sound wave of, opposite direction identical with ambient noise frequency or can on noise conduction pathway, produce and form prevention ambient noise to enter indoor wave absorption energy field region; Controller is for receiving ambient noise collection signal and controlling the take place frequently duty of emitter of backward wave according to the corresponding ambient noise waveform of ambient noise collection signal and frequency status.
The present invention by noise gathering device 1, measure default orientation ambient noise waveform and frequency and send ambient noise collection signal, by controller, receive ambient noise collection signal and control the take place frequently duty of emitter of backward wave according to the corresponding ambient noise waveform of ambient noise collection signal and frequency status; Make the backward wave emitter that takes place frequently launch reverse sound wave identical with ambient noise frequency, opposite direction, thereby reverse sound wave and ambient noise are superposeed mutually, offset or weaken, realize compacting noise; Or make the backward wave emitter that takes place frequently on noise conduction pathway, produce and form and stop ambient noise to enter indoor wave absorption energy field region, in this region, realize and intercept noise, and then decay or offset noise energy, reach the object of shielding noise; That is to say that the present invention according to ambient noise degree of strength, initiatively corresponding energy field region is set, blocks noise admission passage, at this region effective attenuation or offset noise energy, sealing noise is in outdoor; Realized and initiatively eliminated environmental noise, built the effect of squelch.
Because noise is actual, be a kind ofly with the ripple energy that frequently form is propagated, both can accurately detect also and can oppositely suppress and shield, so the present invention can utilize the backward wave emitter that takes place frequently to adopt the pattern of energy offset or shielding to improve noise eradicating efficacy.
In summary, the room noise cancellation element that the embodiment of the present invention provides is measured ambient noise by noise gathering device, controls the backward wave emitter that takes place frequently abate the noise by controller, has realized initiatively and having abated the noise, improve noise eradicating efficacy, and then reduced noise pollution.
In the present invention's one specific embodiment, backward wave takes place frequently emitter for launching the noise transmitter 4 of reverse sound wave, and controller receives after ambient noise collection signal according to the corresponding waveform of ambient noise collection signal and frequency status control noise transmitter 4 synchronized transmissions and goes out the reverse sound wave with ambient noise same frequency, same waveform.The present embodiment is measured in real time waveform and the frequency of the ambient noise of presetting orientation and is sent ambient noise collection signal by noise gathering device 1; Then utilize controller frequently to launch reverse sound wave identical with ambient noise frequency, opposite direction according to the ripple of ambient noise control noise transmitter 4 real-time synchronizations, reverse sound wave and ambient noise are superposeed mutually offsets or weakens, realize compacting noise, reach the effect abating the noise.And, can eliminate the noise of different audio frequency, improved noise eradicating efficacy.
Simultaneously, above-mentioned room noise cancellation element abates the noise by noise transmitter 4 in more comfortable livable mode, substituted soundproof window, so forms 3 are without realizing sealing with body of wall, and without pugging and acoustic absorbant are set on forms 3, save acoustic construction complicated on forms 3, thereby simplified the structure of forms 3, be convenient to the processing of forms 3.In addition, because this room noise cancellation element is without sealing isolation, so guaranteed the current and ventilation function of door and window, can improve noise eradicating efficacy, reach again comfortable livable object.
As shown in Figure 1, in the present invention's one specific embodiment, room noise cancellation element also comprises outdoor traversing carriage and room noise collector 2; Outdoor traversing carriage is arranged on outdoor, and noise gathering device 1, noise transmitter 4 and controller are all arranged on outdoor traversing carriage; Room noise collector 2 is for gathering waveform and the frequency of room noise, and can be according to the waveform of the reverse sound wave of the waveform of room noise and 4 transmittings of frequency correction noise transmitter and frequency to reduce room noise.
The present embodiment forms outdoor pattern, while namely applying, room noise cancellation element is arranged on outdoor.The present invention detects waveform and the frequency of the ambient noise in default orientation in real time by noise gathering device 1; Then by controller, make noise transmitter 4 real-time synchronizations and launch the reverse sound wave with ambient noise same frequency, same waveform, make reverse sound wave and the ambient noise a certain area surface outside window as A face place in figure meets, superposes, decays, reach the effect abating the noise.The present invention can make noise transmitter launch corresponding ripple reverse sound wave frequently according to the ripple of ambient noise frequently, can eliminate the noise of different audio frequency, has improved noise eradicating efficacy.
During application, make above-mentioned room noise collector 2 be arranged on the interior metope of window edge and be connected with noise gathering device 1.The present invention gathers the ripple frequency of room noise by room noise collector 2, and according to the ripple of the above-mentioned reverse sound wave of ripple frequency modulation joint of this room noise frequently, and then the ripple of above-mentioned reverse sound wave is just in time offseted with the ripple of ambient noise frequently frequently; And can avoid backward wave frequently at the indoor new noise that reflects to form, improved indoor quiet effect.Meanwhile, the present invention can move to room noise cancellation element the position that can reach optimal noise eradicating efficacy by mobile outdoor traversing carriage, has further improved indoor comfort degree.
Above-mentioned noise transmitter 4 can be 4, is separately positioned on the place, four window angles outside window; Can also be for launching other numbers of the reverse sound wave offseting with ambient noise or the noise transmitter 4 of other mounting meanss.
Further, noise transmitter 4 is directional diffuse reflection formula transmitter, and the coverage rate of the reverse sound wave of transmitting is wider, and noise eradicating efficacy is better.
As shown in Figure 2, in another specific embodiment of the present invention, room noise cancellation element also comprises indoor moving support and azimuth lock 5; Indoor moving support is arranged on indoor, and noise gathering device 1, noise transmitter 4, controller and azimuth lock 5 are all arranged on indoor moving support; The transmit direction that azimuth lock 5 can be adjusted reverse sound wave makes reverse sound wave and ambient noise on window or predeterminable area face outside window, superpose decay to eliminate ambient noise, that is to say and make the single spin-echo of reverse sound wave and ambient noise differ 180 °, above-mentioned azimuth lock 5 is arranged on the pipeline opening of sending of noise transmitter 4, and direction-locking device 5 is connected with noise transmitter 4 by rotating mechanism, the orientation that can lock reverse sound wave by adjusting the anglec of rotation of this pipe diameter and rotating mechanism prevents that reverse sound wave from reflecting in indoor formation.Preferably, above-mentioned predeterminable area face A is positioned at window outside, can before arriving window, noise be eliminated like this.
The present invention forms indoor mode, while namely applying, room noise cancellation element is arranged on indoor; During work, by noise gathering device 1, detect in real time waveform and the frequency at the ambient noise in default orientation; Then by controller, make noise transmitter 4 real-time synchronizations and launch the reverse sound wave with ambient noise same frequency, same waveform, and the transmit direction of the reverse sound wave being sent by azimuth lock 5 adjustment noise transmitters 4, impel reverse sound wave and ambient noise ripple reverse, on predeterminable area face, meet, superpose, decay, reach the effect abating the noise.The present invention can make noise transmitter launch corresponding ripple reverse sound wave frequently according to the ripple of ambient noise frequently, can eliminate the noise of different audio frequency, has improved noise eradicating efficacy.Meanwhile, the present invention can move to the indoor position that can reach optimal noise eradicating efficacy by room noise cancellation element by mobile indoor moving support, has further improved indoor comfort degree.
As shown in Figure 3, in the present invention's one specific embodiment, backward wave takes place frequently emitter for making outdoor formation stop ambient noise to enter the indoor backward wave waveform transmitters 6 of barrier region frequently, and in the present embodiment, room noise cancellation element is involving vibrations body, controller also; Vibrating mass is arranged on window and is sealed and matched with window, and waveform transmitters 6 can be launched the vibration wave that the vibrating mass of sening as an envoy to produces vibrations, waveform transmitters 6 send pipeline opening towards vibrating mass; Controller receive after ambient noise collection signal according to the corresponding waveform of ambient noise collection signal and frequency status control waveform transmitter 6 produce with the ripple of ambient noise oppositely, the vibration wave of same frequency, same waveform, second is connected with waveform transmitters 6 with noise gathering device 1 respectively.
The present invention detects the ripple frequency at the ambient noise in default orientation in real time by noise gathering device 1; Then by controller make waveform transmitters 6 real-time synchronizations and launch with ambient noise ripple oppositely, the vibration wave of same frequency, same waveform, this vibration wave makes vibrating mass produce vibrations after arriving on vibrating mass, this vibration frequency is contrary with the vibration frequency that ambient noise produces forms 3, make outdoor formation backward wave barrier region frequently, thereby utilize the vibrations that initiatively vibrations abate the noise, upset the normal propagation of sound, noise attenuation energy, stop ambient noise to enter indoor, realized the elimination of noise.
In the present invention's one specific embodiment, vibrating mass is preferably the forms 3 at window place or is arranged on the vibrating diaphragm 7 on forms 3 outside surfaces.So, the vibration wave of waveform transmitters 6 transmitting forms a kind of vibrations of frequency on vibrating diaphragm 7, and wave energy that can noise attenuation, reaches inner muting function.Can also utilize the forms 3 at window place as vibrating mass, by waveform transmitters 6, to forms 3, itself launch vibration wave, cause forms 3 vibrations, the vibration frequency causing with noise is contrary, and then noise attenuation energy.
In another specific embodiment of the present invention, controller receives the wave absorption magnetic field that produces the magnetic field intensity corresponding with ambient noise according to the corresponding waveform of ambient noise collection signal with frequency status controlling magnetic field generator after ambient noise collection signal.During application, this magnetic field producer is arranged on body of wall.The present invention makes window place produce wave absorption magnetic field by magnetic field producer, block whole window and reach magnetic field obstruct noise, formation can effective attenuation noise energy energy barrier region, utilize energy field consumption and decay ambient noise wave energy, realize energy barrier mode and reduce noise, reach inner muting function.
The present invention detects the ripple frequency of the ambient noise in default orientation in real time by noise gathering device 1; Then by controller controlling magnetic field generator, switch on, and according to producing the wave absorption magnetic field magnetic field strength in wave absorption magnetic field after the controlling magnetic field generator energising frequently of the ripple of ambient noise, improved the barriering effect in wave absorption magnetic field.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a room noise cancellation element, is characterized in that, comprising:
Noise gathering device (1), described noise gathering device (1) is for measuring waveform and the frequency of the ambient noise of presetting orientation and sending ambient noise collection signal;
For decaying or the backward wave of the offset noise energy emitter that takes place frequently, the described backward wave emitter that takes place frequently can be launched the reverse sound wave of, opposite direction identical with described ambient noise frequency or can on noise conduction pathway, produce and form the described ambient noise of prevention and entered indoor wave absorption energy field region;
Controller, described controller is for receiving described ambient noise collection signal and controlling the take place frequently duty of emitter of described backward wave according to the corresponding ambient noise waveform of described ambient noise collection signal and frequency status.
2. room noise cancellation element as claimed in claim 1, it is characterized in that, described backward wave takes place frequently emitter for launching the noise transmitter (4) of described reverse sound wave, and described controller receives after described ambient noise collection signal to be controlled described noise transmitter (4) synchronized transmissions according to the corresponding waveform of described ambient noise collection signal and frequency status and go out the reverse sound wave with described ambient noise same frequency, same waveform.
3. room noise cancellation element as claimed in claim 2, is characterized in that, also comprises:
Be arranged on outdoor outdoor traversing carriage, described noise gathering device (1), described noise transmitter (4) and described controller are all arranged on described outdoor traversing carriage;
Room noise collector (2), described room noise collector (2) is for gathering waveform and the frequency of room noise, and can be according to the waveform of the reverse sound wave of noise transmitter (4) transmitting described in the waveform of described room noise and frequency correction and frequency to reduce described room noise.
4. room noise cancellation element as claimed in claim 3, is characterized in that, described noise transmitter (4) is 4, is separately positioned on the place, four window angles outside described window; And described noise transmitter (4) is directional diffuse reflection formula transmitter.
5. room noise cancellation element as claimed in claim 2, is characterized in that, also comprises:
Be arranged on indoor indoor moving support, described noise gathering device (1), described noise transmitter (4) and described controller are all arranged on described indoor moving support;
Be arranged on the azimuth lock (5) of described indoor moving support, the transmit direction that described azimuth lock (5) can be adjusted described reverse sound wave makes described reverse sound wave and described ambient noise on window or predeterminable area face outside window, superpose decay to eliminate described ambient noise, and described azimuth lock (5) is arranged on the pipeline opening of sending of described noise transmitter (4).
6. room noise cancellation element as claimed in claim 1, is characterized in that, described backward wave takes place frequently emitter for making outdoor formation stop described ambient noise to enter the indoor backward wave waveform transmitters (6) of barrier region frequently;
Described room noise cancellation element also comprises:
The vibrating mass that is arranged on described window and is sealed and matched with described window, described waveform transmitters (6) can be launched the described vibrating mass of sening as an envoy to and be produced the vibration wave of vibrations, described waveform transmitters (6) send pipeline opening towards described vibrating mass; Described controller receive after described ambient noise collection signal according to the corresponding waveform of described ambient noise collection signal and frequency status control described waveform transmitters (6) produce with the ripple of described ambient noise oppositely, the vibration wave of same frequency, same waveform, described controller is connected with described waveform transmitters (6) with described noise gathering device (1) respectively.
7. room noise cancellation element as claimed in claim 6, is characterized in that, described vibrating mass is the forms (3) at described window place or is arranged on the vibrating diaphragm (7) on described forms (3) outside surface.
8. room noise cancellation element as claimed in claim 1, it is characterized in that, described backward wave takes place frequently emitter for can make window produce the magnetic field producer in wave absorption magnetic field outward, the energy field of described ambient noise can be decayed or adsorb in described wave absorption magnetic field, and described controller controls according to the corresponding waveform of described ambient noise collection signal and frequency status the wave absorption magnetic field that described magnetic field producer produces the magnetic field intensity corresponding with described ambient noise after receiving described ambient noise collection signal.
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