CN111383623A

CN111383623A - Noise reduction device

Info

Publication number: CN111383623A
Application number: CN201811647544.1A
Authority: CN
Inventors: 肖军辉
Original assignee: Ningbo Tuantuan Industrial Design Co ltd
Current assignee: Ningbo Tuantuan Industrial Design Co ltd
Priority date: 2018-12-31
Filing date: 2018-12-31
Publication date: 2020-07-07

Abstract

A noise reducing device comprising a sound receiver and a sound generator, characterized in that: the noise reduction device comprises a sound receiver, a sound recognizer, a sound reverse compiler and a sound generator, wherein the sound receiver is arranged on the outer side of the window, the sound generator is connected to a wall or a support on the inner side of the window through a rotating mechanism, the sound recognizer and the sound reverse compiler are sequentially connected; the rotating mechanism is used for switching the position of the sound generator, so that the sound generator is switched between the middle part of the window frame and the outer part of the frame; the voice recognizer is used for recognizing the frequency and the amplitude of the received voice in the voice receiver; the voice inverse compiler is used for inversely compiling the frequency and the amplitude identified by the voice identifier to generate an inverse voice. The invention has the advantages that: can be applied to the window and does not influence the normal use of the window.

Description

Noise reduction device

Technical Field

The invention relates to a noise processing technology, in particular to a noise reduction device.

Background

The prior Chinese patent application with the patent number of CN200810104613.4 named as 'a noise reduction method for a printing unit of a printing machine' discloses a noise reduction method for the printing unit of the printing machine, which comprises the following steps: 1) setting sound detectors in different directions for the noise source, detecting the noise emitted by the noise source, and analyzing the characteristics of the noise such as direction, frequency, wavelength, amplitude and the like; 2) arranging a loudspeaker in the detection area, and enabling the distance between the loudspeaker and a noise source to be integral multiple of the wavelength of the noise; 3) according to the characteristics of the detected noise, such as frequency, amplitude value, wavelength and the like, the loudspeaker emits sound with the same frequency, amplitude value and wavelength; 4) the phase of the sound emitted by the loudspeaker is adjusted to be 180 degrees different from the phase of the noise, so that the intensity of the noise emitted by the noise source is reduced or cancelled in space. The invention reduces or counteracts the intensity of the noise by arranging the loudspeaker to emit the sound opposite to the phase direction of the noise source, thereby greatly reducing the noise. However, this method is difficult to apply to windows and has a limited field of use, and thus further improvement is required.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a noise reduction device that can be applied to a window without affecting the normal use of the window, in view of the above-mentioned current state of the art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the noise reduction device comprises a sound receiver and a sound generator, and is characterized in that: the noise reduction device comprises a sound receiver, a sound recognizer, a sound reverse compiler and a sound generator, wherein the sound receiver is arranged on the outer side of the window, the sound generator is connected to a wall or a support on the inner side of the window through a rotating mechanism, the sound recognizer and the sound reverse compiler are sequentially connected;

the rotating mechanism is used for switching the position of the sound generator, so that the sound generator is switched between the middle part of the window frame and the outer part of the frame;

the voice recognizer is used for recognizing the frequency and the amplitude of the received voice in the voice receiver;

the voice inverse compiler is used for inversely compiling the frequency and the amplitude identified by the voice identifier to generate an inverse voice.

As an improvement, slewing mechanism includes the dwang, rotates seat and location portion, the sound generator is connected in the one end of dwang, and the other end of dwang can be connected with rotating on the seat with rotating, rotate the seat and fix on the inboard wall body of window or support, the dwang can be connected with location portion, location portion is used for being located when the sound generator the dwang is fixed a position when window frame middle part and frame outside two positions.

The improved structure is characterized in that two threaded holes are formed in the rotating seat at intervals, the positions of the threaded holes correspond to the two positioning positions of the rotating rod respectively, a positioning hole is formed in the corresponding position of the rotating rod, a screw penetrates through the positioning hole, and the screw is screwed into the corresponding threaded hole to position the rotating rod.

The improved structure is characterized in that a lantern ring is arranged at one end, far away from the sound generator, of the rotating rod, the lantern ring is sleeved on a convex portion of the rotating seat, the positioning portion comprises a first ejector rod and a second ejector rod, the first ejector rod is located on a wall body or a support on one side of the rotating seat, the second ejector rod is located on the support above the rotating seat, and the second ejector rod is eccentrically arranged relative to the center of the lantern ring.

The improved sound generator is characterized in that the rotating seat, the convex part of the rotating seat, the lantern ring and the rotating rod are of a hollow structure, a rod body through hole is formed in the rod body of the rotating rod, the sound recognizer and the sound reverse compiler are arranged on a wall body or a support corresponding to the rotating seat, and a circuit of the sound reverse compiler penetrates through an inner cavity of the rotating seat and the rotating rod to be connected with the sound generator.

The improved sound generator is characterized in that a counterweight frame is arranged at the rotating end of the rotating rod, and the counterweight frame and the sound generator are arranged in a reverse direction.

In a further improvement, the voice recognizer and the voice inverse compiler are arranged on the weight frame.

The sound receiver is positioned at one end of the protective barrel, the other end of the protective barrel is connected with the rotating mechanism, a lead of the sound receiver penetrates through the protective barrel and is connected with the sound recognizer, the sound recognizer and the sound reverse compiler are positioned in the other end of the protective barrel, or the sound recognizer and the sound reverse compiler are positioned in the rotating mechanism.

In a further improvement, the protection cylinder is a telescopic structure consisting of a first cylinder body and a second cylinder body.

As an improvement, the response time of the noise reduction device is less than L/340s, wherein L is the straight-line distance between the sound receiver and the sound generator in the middle of the window frame.

Compared with the prior art, the invention has the advantages that: the noise reduction device can be applied to a window, and can still realize the noise reduction function when the window is opened and the indoor space is in a ventilation state; the sound generator is connected to the wall body or the bracket through the rotating mechanism, so that the sound generator can rotate relative to the wall body or the bracket, the opening and closing of a window cannot be influenced, and the using effect is good; the sound receiver is positioned outside the window, can timely receive outdoor noise, and the noise reduction device is sensitive and timely in response and can effectively reduce noise pollution.

Drawings

FIG. 1 is a diagram illustrating the effect of the present invention;

FIG. 2 is a perspective view of FIG. 1 at another angle;

FIG. 3 is a perspective view of the rotary lever of FIG. 2 after rotation;

FIG. 4 is a rear perspective view of FIG. 1;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is an exploded view of the structure of FIG. 2;

FIG. 7 is an exploded view of the non-exploded portion of FIG. 6;

FIG. 8 is an exploded view of the non-exploded portion of FIG. 7;

FIG. 9 is a diagram of the effect of the application of FIG. 1 with the window moved open;

FIG. 10 is a graph illustrating the effect of the application of another embodiment of the present invention;

FIG. 11 is a perspective view of the rotating lever of FIG. 10 after rotation;

FIG. 12 is an exploded view of the structure of FIG. 10;

FIG. 13 is a diagram showing the effect of the third embodiment of the present invention;

FIG. 14 is a graph of the amplitude versus frequency of sound received by the sound receiver of the present invention;

FIG. 15 is a graph of the amplitude versus frequency of the sound output by the sound inverse compiler of the present invention;

FIG. 16 is a graph showing the effect of the curves of FIGS. 14 and 15 superimposed;

FIG. 17 is an enlarged view of portion I of FIG. 2;

FIG. 18 is an enlarged view of section II of FIG. 3;

FIG. 19 is an enlarged view of section III of FIG. 5;

FIG. 20 is an enlarged view of the portion IV of FIG. 10;

FIG. 21 is an enlarged view of portion V of FIG. 12;

fig. 22 is an enlarged view of the VI portion in fig. 13.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 9 and 17 to 19, the noise reduction device of the present embodiment includes a sound receiver 1 and a sound generator 4, and is characterized in that: the noise reduction device comprises a sound receiver 1, a sound generator 4, a sound recognizer 2 and a sound reverse compiler 3, wherein the sound receiver 1 is arranged on the outer side of a window, the sound generator 4 is connected to a wall body 5 or a support on the inner side of the window through a rotating mechanism, the sound receiver 1, the sound recognizer 2, the sound reverse compiler 3 and the sound generator 4 are sequentially connected; the rotating mechanism is used for switching the position of the sound generator 4, so that the sound generator 4 is switched between the middle part of the window frame and the outer part of the frame; the voice recognizer 2 is for recognizing the frequency and amplitude of the sound received in the voice receiver 1; the sound inverse compiler 3 is configured to inversely compile the frequency and amplitude recognized by the sound recognizer 2 into an inverse sound. Slewing mechanism includes dwang 6, rotates seat 7 and location portion, sound generator 4 is connected in the one end of dwang 6, and the other end of dwang 6 can be connected with rotating on seat 7 with rotating, rotate seat 7 and fix on inboard wall body 5 of window or support, dwang 6 can be connected with location portion, location portion is used for being located when sound generator 4 the dwang 6 is fixed a position when two positions of window frame middle part and frame outside. The sound generator 4 is located in the middle of the window frame, namely in the middle of the window opening of the window after the window is opened, the middle of the window frame is in a large range, the sound generator 4 can be considered to be located in the middle of the window frame when leaving the edge of the window frame by more than 10cm, theoretically, the sound generator 4 can also achieve the noise reduction function in the position close to the edge of the window frame, the effect is unsatisfactory, the practicability is poor, and the sound generator is arranged in the middle of the window frame, particularly in the middle of the window frame, and can achieve a.

Two threaded holes 71 are arranged on the rotating seat 7 at intervals, the positions of the threaded holes correspond to the two positioning positions of the rotating rod 6 respectively, a positioning hole 61 is arranged at the corresponding position of the rotating rod 6, a screw 62 penetrates through the positioning hole 61, and the screw 62 is used for screwing into the corresponding threaded hole 71 to position the rotating rod 6.

The wall body 5 or the support below the window frame is provided with a through-wall hole 51, a protective barrel with two open ends is arranged in the through-wall hole 51 in a penetrating mode, the sound receiver 1 is located at one end of the protective barrel, the other end of the protective barrel is connected with a rotating mechanism, a lead of the sound receiver 1 penetrates through the protective barrel and is connected with the sound recognizer 2, the sound recognizer 2 and the sound reverse compiler 3 are located in the other end of the protective barrel, or the sound recognizer 2 and the sound reverse compiler 3 are located in the rotating mechanism. The protection cylinder is a telescopic structure consisting of a first cylinder body 11 and a second cylinder body 12. The response time of the noise reduction device is less than L/340s, wherein L is the linear distance between the sound receiver 1 and the sound generator 4 in the middle of the window frame. The dwang 6 can adopt hollow structure, it also adopts hollow structure to rotate seat 7, sound receiver 1 like this, sound recognizer 2, reverse compiler 3 of sound and sound generator 4 can loop through the wire connection, of course sound receiver 1, sound recognizer 2, reverse compiler 3 of sound and sound generator 4 also can be through wireless connection, because the transmission speed between the above-mentioned device of wire connection and wireless connection is switched on in the twinkling of an eye, so the transmission time can not count into response time, the factor that influences this noise reduction device response time is mainly the processing time of sound recognizer 2 and reverse compiler 3 of sound. The rotating base 7 is fixed on the wall 5 or the bracket through a fixing screw, and the specific structure of the rotating base 7 can refer to corresponding fig. 8.

As shown in fig. 10 to 13 and fig. 20 to 22, another embodiment of the noise reduction apparatus includes a sound receiver 1 and a sound generator 4, and is characterized in that: the noise reduction device comprises a sound receiver 1, a sound generator 4, a sound recognizer 2 and a sound reverse compiler 3, wherein the sound receiver 1 is arranged on the outer side of a window, the sound generator 4 is connected to a wall body 5 or a support on the inner side of the window through a rotating mechanism, the sound receiver 1, the sound recognizer 2, the sound reverse compiler 3 and the sound generator 4 are sequentially connected; the rotating mechanism is used for switching the position of the sound generator 4, so that the sound generator 4 is switched between the middle part of the window frame and the outer part of the frame; the voice recognizer 2 is for recognizing the frequency and amplitude of the sound received in the voice receiver 1; the sound inverse compiler 3 is configured to inversely compile the frequency and amplitude recognized by the sound recognizer 2 into an inverse sound. Slewing mechanism includes dwang 6, rotates seat 7 and location portion, sound generator 4 is connected in the one end of dwang 6, and the other end of dwang 6 can be connected with rotating on seat 7 with rotating, rotate seat 7 and fix on inboard wall body 5 of window or support, dwang 6 can be connected with location portion, location portion is used for being located when sound generator 4 the dwang 6 is fixed a position when two positions of window frame middle part and frame outside.

The one end of keeping away from the sound generator at the dwang is provided with the lantern ring 63, lantern ring 63 cover is put on the convex part 72 of rotating seat 7, location portion includes first ejector pin 64 and second ejector pin 65, first ejector pin 64 is located the wall body 5 or the support of rotating seat 7 one side, second ejector pin 65 is located the support of rotating seat top, the relative lantern ring center off-centre of second ejector pin 65 sets up. The rotation seat 7, the convex part 72 of the rotation seat, the lantern ring 63 and the rotating rod 6 are both of a hollow structure, a rod body through hole 66 is formed in the rod body of the rotating rod 6, the voice recognizer 2 and the voice reverse compiler 3 are arranged on the wall body 5 or the support corresponding to the rotation seat, and the circuit of the voice reverse compiler 3 penetrates through the inner cavity of the rotation seat 7 and the inner cavity of the rotating rod 6 to be connected with the voice generator 4. The wall body 5 or the support below the window frame is provided with a through-wall hole 51, a protective barrel with two open ends is arranged in the through-wall hole 51 in a penetrating mode, the sound receiver 1 is located at one end of the protective barrel, the other end of the protective barrel is connected with a rotating mechanism, a lead of the sound receiver 1 penetrates through the protective barrel and is connected with the sound recognizer 2, the sound recognizer 2 and the sound reverse compiler 3 are located in the other end of the protective barrel, or the sound recognizer 2 and the sound reverse compiler 3 are located in the rotating mechanism. In the third embodiment, a weight holder 67 is provided at the rotation end of the rotation lever 6, and the weight holder 67 is provided in the reverse direction of the sound generator 4. The voice recognizer 2 and the voice inverse compiler 3 are disposed on the weight rack 67. The protection cylinder is a telescopic structure consisting of a first cylinder body 11 and a second cylinder body 12. The response time of the noise reduction device is less than L/340s, wherein L is the linear distance between the sound receiver 1 and the sound generator 4 in the middle of the window frame. A friction-reducing ball bearing can be fixed to the inner ring of the collar.

As shown in fig. 14 to 16, L1 represents the amplitude-frequency curve of the sound received by the sound receiver, L2 represents the amplitude-frequency curve of the sound output by the sound inverse compiler, and L3 is the sound curve formed by superimposing L1 and L2.

A sound receiver is arranged in front of the window, and a sound generator, a sound recognizer and a sound reverse compiler are arranged on the window; the outdoor sound firstly passes through the sound receiver, the frequency and the intensity of the sound signal are identified in real time by the sound identifier, the reverse sound signal is given by the reverse sound compiler and is emitted out through the sound generator arranged on the window, and the original outdoor sound and the sound generated by the sound generator are overlapped at a certain position in the middle to reduce the intensity of the original sound. Wherein the sound receiver is spaced from the sound generator by a distance determined based on the processing speed of the sound recognizer and the sound decompiler. The recognition and the opposite signal are completed before the original sound is transmitted to the sound generator, so that most of outdoor noise can be eliminated, and the best use effect can be obtained. The sound wave velocity was 340m/s and the response time of the entire noise reducer was 1/340s assuming that the sound receiver and sound generator distance was set to 1 m. The specific circuit structure of the sound receiver, the sound generator, the sound recognizer and the sound reverse compiler is well known in the art, and thus will not be described in detail.

Claims

1. A noise reducing arrangement comprising a sound receiver (1) and a sound generator (4), characterized in that: the noise reduction device comprises a sound receiver (1), a sound recognizer (2), a sound reverse compiler (3) and a sound generator (4), wherein the sound receiver (1) is arranged on the outer side of a window, the sound generator (4) is connected to a wall body (5) or a support on the inner side of the window through a rotating mechanism, and the sound receiver (1), the sound recognizer (2), the sound reverse compiler (3) and the sound generator (4) are sequentially connected;

the rotating mechanism is used for switching the position of the sound generator (4) so that the sound generator (4) is switched between the middle part of the window frame and the outer part of the frame;

the voice recognizer (2) is used for recognizing the frequency and the amplitude of the received voice in the voice receiver (1);

the sound inverse compiler (3) is used for inversely compiling the frequency and the amplitude identified by the sound identifier (2) to generate inverse sound.

2. The noise reduction device according to claim 1, characterized in that: slewing mechanism includes dwang (6), rotates seat (7) and location portion, the one end at dwang (6) is connected in sound generator (4), and the other end of dwang (6) can be connected with rotating seat (7) with rotating, rotate seat (7) and fix on inboard wall body (5) of window or support, dwang (6) can be connected with location portion, location portion is used for being located when sound generator (4) dwang (6) are fixed a position during two positions of window frame middle part and frame outside.

3. The noise reduction device according to claim 2, characterized in that: be provided with the interval on rotating seat (7) and be provided with two screw holes (71), the screw hole position corresponds respectively with two locating position of dwang (6), is provided with a locating hole (61) in the corresponding position of dwang (6) wear to put a screw (62) in locating hole (61), screw (62) are used for corresponding screw hole (71) location dwang (6) of screw in.

4. The noise reduction device according to claim 2, characterized in that: one end of the rotating rod away from the sound generator is provided with a sleeve ring (63), the sleeve ring (63) is sleeved on a convex part (72) of the rotating seat (7), the positioning part comprises a first ejector rod (64) and a second ejector rod (65), the first ejector rod (64) is positioned on a wall body (5) or a support on one side of the rotating seat (7), the second ejector rod (65) is positioned on the support above the rotating seat, and the center of the second ejector rod (65) is eccentrically arranged relative to the sleeve ring.

5. The noise reduction device according to claim 4, wherein: rotate seat (7), rotate convex part (72) of seat, lantern ring (63) and dwang (6) are hollow structure, are provided with body of rod through-hole (66) on the body of rod of dwang (6), sound identification ware (2) and the reverse compiler of sound (3) set up on rotating wall body (5) or the support that the seat corresponds, and the circuit of the reverse compiler of sound (3) passes the inner chamber of rotating seat (7) and dwang (6) and is connected with sound generator (4).

6. The noise reduction device according to claim 2, characterized in that: a counterweight frame (67) is arranged at the rotating end of the rotating rod (6), and the counterweight frame (67) and the sound generator (4) are arranged in a reverse direction.

7. The noise reduction device according to claim 6, wherein: the voice recognizer (2) and the voice inverse compiler (3) are arranged on the counterweight frame (67).

8. The noise reduction device according to any one of claims 1 to 6, characterized in that: the wall body (5) or the support below the window frame is provided with a through-wall through hole (51), a protective barrel with two open ends penetrates through the through-wall through hole (51), the sound receiver (1) is located at one end of the protective barrel, the other end of the protective barrel is connected with a rotating mechanism, a lead of the sound receiver (1) penetrates through the protective barrel and is connected with the sound recognizer (2), the sound recognizer (2) and the sound reverse compiler (3) are located at the other end of the protective barrel, or the sound recognizer (2) and the sound reverse compiler (3) are located in the rotating mechanism.

9. The noise reduction device according to claim 8, wherein: the protection cylinder is a telescopic structure consisting of a first cylinder body (11) and a second cylinder body (12).

10. The noise reduction device according to any one of claims 1 to 6, characterized in that: the response time of the noise reduction device is less than L/340s, wherein L is the linear distance between the sound receiver (1) and the sound generator (4) in the middle of the window frame.