KR20130019905A - Apparatus for controlling roadside noise - Google Patents

Apparatus for controlling roadside noise Download PDF

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Publication number
KR20130019905A
KR20130019905A KR1020110082201A KR20110082201A KR20130019905A KR 20130019905 A KR20130019905 A KR 20130019905A KR 1020110082201 A KR1020110082201 A KR 1020110082201A KR 20110082201 A KR20110082201 A KR 20110082201A KR 20130019905 A KR20130019905 A KR 20130019905A
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KR
South Korea
Prior art keywords
speaker
noise
interference
signal
roadside
Prior art date
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KR1020110082201A
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Korean (ko)
Inventor
차상곤
Original Assignee
에스큐엔지니어링(주)
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Priority to KR1020110082201A priority Critical patent/KR20130019905A/en
Publication of KR20130019905A publication Critical patent/KR20130019905A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0004—Personal or domestic articles
    • F21V33/0052—Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices therefor
    • F21V33/0056—Audio equipment, e.g. music instruments, radios or speakers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/128—Vehicles
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3046—Multiple acoustic inputs, multiple acoustic outputs

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Engineering & Computer Science (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

And a first speaker unit and a second speaker unit. The first speaker unit is installed on a memory unit for inputting vehicle noise measured according to time on the road side and connected to the memory unit on the road side to measure the vehicle noise to cancel the first interference sound canceling the vehicle noise input to the memory unit. And a first speaker that emits in position. The second speaker unit is installed between the roadside and the sound source, and is connected to a microphone and a microphone for detecting vehicle noise that is not offset by the first interference sound due to the difference between the input vehicle noise and the actual vehicle noise. A signal processor for generating an interference signal for canceling and a second speaker connected to the signal processor and emitting a second interference sound according to the interference signal to the sound source.

Figure P1020110082201

Description

Roadside noise control device {APPARATUS FOR CONTROLLING ROADSIDE NOISE}

The present invention relates to a roadside noise control device, and more particularly to a noise control device that can reduce the vehicle noise generated on the roadside.

Recently, research has been conducted on active noise control for reducing noise generated in roads or railways, and in construction sites and factories. In this active noise control, noise is reduced by using the destructive interference of the offset sound having the same phase as that of the noise. For active noise control, the canceling sound is radiated by using a speaker device.

In particular, the noise caused by the vehicle running on the road in a residential area provided around the road can cause serious problems that disturb the sleep. Therefore, by installing a high noise barrier on the side of the road to physically block the vehicle noise so as not to affect the residence as much as possible.

However, the above-mentioned sound insulation wall, which is a physical method, does not fundamentally solve the vehicle noise on the road, and especially in a high-rise apartment built in a residential area, the height of the soundproof wall cannot be installed unconditionally high. The soundproof wall may be substantially useless.

Therefore, the technical problem of the present invention has been made in view of this point, an object of the present invention is to provide a roadside noise control apparatus that can be removed from the source so that the vehicle noise does not reach the residents living on the roadside.

Roadside noise control apparatus according to an embodiment of the present invention includes a first speaker unit and a second speaker unit.

The first speaker unit may include a memory unit for inputting vehicle noise measured according to time at a roadside and a first interference sound installed at the roadside and connected to the memory unit and canceling vehicle noise input to the memory unit. And a first speaker that emits at the position where the vehicle noise is measured.

The second speaker unit is installed between the roadside and the sound source, and is connected to the microphone, the microphone for detecting vehicle noise that is not canceled by the first interference sound due to the difference between the input vehicle noise and the actual vehicle noise, And a signal processor for generating an interference signal for canceling the sensed vehicle noise, and a second speaker connected to the signal processor and radiating a second interference sound according to the interference signal to the sound source.

According to an embodiment, the second speaker unit may be installed in a street lamp. In this case, the second speaker unit may further include a second microphone installed in the street light so as to be positioned at a point where the second interference sound is radiated, and detecting a residual noise interfered by the second interference sound to generate an error signal. It may include. In this case, the signal processor receives the error signal and generates a second interference signal that compensates for the interference signal to cancel the residual noise, and the second speaker generates a third interference sound according to the second interference signal. It can radiate.

The second speaker according to another embodiment may have a structure embedded in the ground. Accordingly, the second speaker unit further includes a body in which the second speaker is installed at the side, and is embedded in the buried groove of the ground, and the light fixture is installed to emit light in an upward direction to the mounting groove formed thereon. It may include.

The second speaker unit may further include a shock absorbing member installed at an inner bottom of the buried groove to provide a cushioning force to the buried body.

In this case, the noise control device is inclined toward the ground from the second speaker so that the second interference sound from the second speaker to the ground on the inner side facing the second speaker of the buried groove The apparatus may further include a drainage part installed at a portion where the passage part and the second speaker and the passage part contact each other to drain water introduced into the passage part from the ground.

The second speaker unit may further include a second microphone installed at a portion adjacent to the ground of the passage part and connected to the signal processor to generate an error signal by detecting residual noise interfered by the second interference sound. can do. Accordingly, the signal processor generates the second interference signal that compensates for the interference signal in order to cancel the residual noise by receiving the error signal, and the second speaker generates a third interference sound according to the second interference signal. It can radiate to the passage portion.

According to the noise control apparatus of the road side according to an embodiment of the present invention, first emitting the first interference sound to cancel the input vehicle noise through the first speaker that is input to the vehicle noise pre-measured according to the time on the road side first And emitting second interference sound through a second speaker through a second speaker, which is not offset by the first interference sound due to a difference between the input vehicle noise and the actual vehicle noise between the residential area as a sound source and the roadside. As a result, vehicle noise generated at the roadside may be removed at source.

As a result, inhabitants living on the side of the road do not have an uncomfortable effect from the noise of the vehicle on the side of the road, so that they can lead a comfortable and stable life without noise.

1 is a view conceptually illustrating a noise control device installed on a roadside according to an embodiment of the present invention.
FIG. 2 is a view illustrating a state in which a second speaker unit of the noise control device illustrated in FIG. 1 is installed in a street lamp.
3 is a view conceptually illustrating a noise control device installed on a roadside according to another embodiment of the present invention.
4 is a view illustrating a state in which the second speaker unit of the noise control device illustrated in FIG. 3 is embedded in the ground.
FIG. 5 is an enlarged view of a portion A of FIG. 4.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the roadside noise control device according to an embodiment of the present invention. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

1 is a view conceptually showing a noise control device installed on a roadside according to an embodiment of the present invention, Figure 2 is a view showing a state in which the speaker unit of the noise control device shown in Figure 1 is installed in a street light.

1 and 2, the noise control apparatus 1000 according to an embodiment of the present invention includes a first speaker unit 100 and a speaker unit 200.

The first speaker unit 100 includes a memory unit 110 and a first speaker 120. The memory unit 110 inputs a vehicle noise measured in advance along the time at the roadside. In detail, the memory unit 110 receives an average value of vehicle noise repeatedly measured for a predetermined period of time.

The first speaker 120 is installed at the roadside of the road 10 on which the vehicle runs. For example, the first speaker 120 may be installed to face the outer direction of the road 10 at the top of the soundproof wall 20 installed to physically block the noise of the vehicle. Specifically, the first speaker 120 may be installed toward the housing 30 formed at a predetermined interval between the roadside and the roadside.

The first speaker 120 is connected to the memory unit 110 and inputs a vehicle noise measured in advance along the road at a roadside. At this time, the vehicle noise input above is a value measured at the same point as the position where the speaker 100 is installed. In addition, the memory unit 110 may be embedded in the first speaker 120 or directly connected to an outer surface for convenience of operation.

The first speaker 120 emits the interference sound I1 that can cancel the input vehicle noise over time based on the vehicle noise input from the memory unit 110 toward the housing 30 as the sound source. do. In this case, the vehicle noise generated on the roadside is primarily canceled to some extent, and only the difference between the input vehicle noise and the actual vehicle noise affects the residence 30. The first speaker 120 may include a diaphragm, a voice coil, a magnet, and the like.

The second speaker unit 200 is installed between the roadside and the residential area 30, which is a sound source, to remove vehicle noise that is not offset by the above difference. For example, as shown in FIG. 2, the speaker unit 200 may be installed in a street lamp 40 installed to brighten a road mainly used by residents except for a vehicle, such as a walkway or an alley.

The second speaker unit 200 includes a microphone 210, a signal processor 220, and a second speaker 230. The microphone 210 generates a noise signal by detecting a vehicle noise from a roadside that is not canceled by the interference sound I1 emitted from the first speaker 120. Thus, the microphone 210 may be installed in the roadside direction of the street lamp 40 to effectively detect the vehicle noise. As the microphone 210, a known microphone device may be used, and thus, detailed description of the microphone 210 will be omitted.

In addition, a blocking member (not shown) may be installed at a location where the microphone 210 of the street lamp 40 is installed to protect the microphone 210 from rain or snow. The blocking member (not shown) may be installed in an umbrella shape at the top of the microphone 210 or may be installed to surround the microphone 210 as a whole.

The signal processor 220 is connected to the microphone 210 to receive a noise signal. The signal processor 220 generates an interference signal that is an electrical signal corresponding to the vehicle noise that is not canceled based on the noise signal. Here, the generated interference signal is in phase with the noise signal transmitted from the microphone 210 and has the same frequency characteristics.

The signal processor 220 may include a signal amplifier (not shown) for amplifying the noise signal transmitted from the microphone 210 and a digital signal processor (not shown) for generating an interference signal based on the amplified noise signal. ) May be included.

Since the signal processing unit 220 processes only a signal without a function of collecting noise or radiating sound from the outside, the signal processor 220 may be installed inside the body of the street lamp 40 to be essentially protected from rain and snow. In addition, the signal processor 220 may not be directly installed in the street lamp 40, but may be installed in any place that may be protected from rain and snow in the vicinity.

The second speaker 230 is connected to the signal processor 220. The second speaker 230 receives an indirect signal from the signal processor 220 and emits a second interference sound I2 according to the second speaker 230. Thus, vehicle noise that is not canceled by the first speaker 120 may be offset by the second interference sound I2 emitted from the second speaker 230. In this case, the second speaker 230 may be installed in the street lamp 40 so that the second interference sound I2 is radiated toward the residential area 30 so that the vehicle noise does not affect the residential area 30.

In addition, the second speaker unit 200 may further include a second microphone 240 installed in the street lamp 40 at a position where the second interference sound I2 is radiated from the second speaker 230. The second microphone 240 generates an error signal by detecting residual noise that is not canceled by the second interference sound I2.

The second microphone 240 transmits an error signal generated by being connected to the signal processor 220. In this case, the signal processor 220 generates the second interference signal by correcting the interference signal through the error signal, and transmits the second interference signal to the second speaker 230. The second speaker 230 emits a third interference sound by correcting the second interference sound I2 through the transmitted second interference signal.

By detecting a residual noise by the second microphone 240 in real time and repeatedly performing a series of processes through the signal processing unit 220 and the second speaker 230 in real time, it is not canceled in the above Vehicle noise may be removed through the second or third continuous interference sound emitted through the second speaker 230.

In this manner, first, the interference noise I1 canceling the vehicle noise input to the memory unit 110 through the first speaker 120, the vehicle noise pre-measured in accordance with the time is input to the road side, and then can be Secondly, the vehicle noise, which is not canceled by the interference sound I1 due to the difference between the input vehicle noise and the actual vehicle noise, between the residential area 30 and the roadside, which is a sound source, is secondarily through the second speaker 230. By emitting the second interference sound I2 or the third interference sound, it is possible to remove all vehicle noises generated at the roadside.

As a result, inhabitants living on the side of the road do not have an uncomfortable effect from the noise of the vehicle on the side of the road, so that they can lead a comfortable and stable life without noise.

3 is a view conceptually illustrating a noise control apparatus installed on a roadside according to another embodiment of the present invention, and FIG. 4 is a view illustrating a state in which a second speaker unit of the noise control apparatus illustrated in FIG. 3 is embedded in the ground. 5 is an enlarged view of a portion A of FIG. 4.

In the present embodiment, some of the components described in FIG. 2 that perform the same function will be described using the same name.

3 to 5, the noise control device 2000 installed at the side of a road according to another embodiment of the present invention includes a second speaker unit 300 installed at a place such as a park to improve the quality of life of residents. Include.

The second speaker unit 300 includes a body 310, a microphone 320, a signal processor 330, and a second speaker 340. The body 310 is embedded in the buried groove 52 of the ground 50 so that the upper end surface thereof is substantially in line with the ground 50. The body 310 has a mounting groove 312 at the top.

Accordingly, the second speaker unit 300 may further include a lighting device 314 mounted to emit light L in the upward direction in the mounting groove 312. The lighting equipment 314 not only prevents night crimes that may occur by guiding the road at night in the residents of the park, but also looks cool to the residents through the effect that the light L is emitted from the ground 50. May be provided.

In addition, the second speaker unit 300 may further include a cover 316 of a transparent material installed to transmit light to protect the lighting device 314 at the entrance of the mounting groove 312. The cover 316 needs to have sufficient strength to support it even if the inhabitant is accidentally bright. Thus, the cover 316 may be made of a transparent glass or a transparent acrylic material of sufficient thickness to have the above strength. The cover 316 has an opening 318 on one side.

The microphone 320 is installed near the opening 318 of the cover 316 inside the mounting groove 312 of the body 310. Accordingly, the microphone 320 generates a noise signal by detecting a vehicle noise that is not canceled by the interference sound (I1 of FIG. 1) emitted from the first speaker 120 of FIG. 1 through the opening 318. do. In this case, the microphone 320 may be installed so that the upper part is covered by the cover 316 near the opening 318 as shown in FIG. 4 without being directly exposed to the opening 318 to protect from rain and snow.

The signal processor 330 is connected to the microphone 320 to receive a noise signal. The signal processor 330 generates an interference signal corresponding to the vehicle noise that is not canceled based on the noise signal. Since the signal processor 330 only needs to be protected from rain and snow, the signal processor 330 may be embedded in the body 310 or installed in a separate place adjacent to the body 310 on the ground.

The second speaker 340 is installed at the side of the body 310 and connected to the signal processor 330. The second speaker 340 receives the interference signal and emits a second interference sound I2 according to the interference signal. As a result, the second side surface of the buried groove 52 facing the second speaker 340 may be grounded from the second speaker 340 so that the second interference sound I2 is radiated from the second speaker 340 to the ground 50. A passage part 400 penetrated obliquely toward 50 may be formed.

In this case, the drain portion 500 that faces in the downward direction to drain the rain or snow, that is, the water flowing from the ground 50 may be installed in the portion in contact with the second speaker 340 of the passage portion 400. The drain 500 may be connected to a nearby sewage pipe to smoothly drain the water.

In addition, the second speaker unit 300 may further include a second microphone 350 installed at a position at which the second interference sound I2 is radiated from the second speaker 340, that is, at the entrance of the passage part 400. have. The second microphone 350 generates an error signal by detecting residual noise that is not canceled by the second interference sound I2.

The second microphone 350 transmits an error signal generated by being connected to the signal processor 330. In this case, the signal processor 330 corrects the interference signal through an error signal, generates a second interference signal, and transmits the second interference signal to the second speaker 340. The second speaker 340 emits a third interference sound by correcting the second interference sound I2 through the transmitted second interference signal. As a result, the vehicle noise may be fundamentally removed by the second interference sound I2 or the third interference sound emitted from the second speaker 340.

The second speaker unit 300 may further include a shock absorbing member 360 installed between the body 310 at the inner bottom of the buried groove 52 to provide a shock absorbing force to the body 310. The buffer member 360 may be installed in a bellows shape. Alternatively, the cushioning member 360 may include a cylinder that provides cushioning support by force of air or oil.

The shock absorbing member 360 may prevent the second speaker unit 300 from being damaged by the cushioning force when the inhabitants passing through the second speaker unit 300 brighten the cover 316. In addition, the shock absorbing member 360 may prevent the cover 316 protecting the lighting device 314 from being damaged by a strong external shock, thereby preventing cost waste due to material loss.

As described above, the noise control apparatus according to the embodiments of the present invention removes vehicle noise on the roadside by two speakers so that residents living near the roadside do not have an uncomfortable life due to vehicle noise. Can be used.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.

10: road 20: soundproof wall
30: residence 40: street light
50: ground 100: first speaker unit
110: memory unit 120: first speaker
200, 300: second speaker unit 210, 320: microphone
220, 330: signal processor 230, 340: second speaker
240, 350: second microphone 400: passage portion
500: drain
1000, 2000: Noise control device

Claims (8)

A memory unit configured to input vehicle noise measured according to time at a roadside and a first interference sound installed at the roadside and connected to the memory unit and canceling the vehicle noise input to the memory unit; A first speaker unit having a first speaker emitting from the light; And
A microphone installed between the roadside and the sound source and detecting a vehicle noise that is not canceled by the first interference sound due to a difference between the input vehicle noise and the actual vehicle noise, the microphone being connected to the microphone, and detecting the detected vehicle noise Roadside noise control including a signal processor for generating an interference signal for canceling and a second speaker unit connected to the signal processor and having a second speaker for emitting a second interference sound according to the interference signal to the sound source Device. The noise control apparatus of claim 1, wherein the second speaker unit is installed in a street lamp. The second speaker unit of claim 2, wherein the second speaker unit is installed in the street light so as to be located at a point where the second interference sound is radiated, and generates a error signal by detecting residual noise interfered by the second interference sound. Further includes a microphone,
The signal processor receives the error signal to generate a second interference signal that compensates for the interference signal to cancel the residual noise, and the second speaker emits a third interference sound according to the second interference signal. Roadside noise control device, characterized in that. The noise control apparatus of claim 1, wherein the second speaker has a structure embedded in the ground. The method of claim 4, wherein the second speaker unit
A body buried in a buried groove of the ground with the second speaker installed at a side thereof and having a mounting groove formed thereon; And
The roadside noise control device further comprises a lighting device installed to emit light in the upper direction in the mounting groove. 6. The roadside noise control device of claim 5, wherein the second speaker unit further includes a shock absorbing member installed at an inner bottom of the buried groove to provide a cushioning force to the buried body. 6. The passage portion of claim 5, wherein the passage portion is inclined toward the ground from the second speaker so that the second interference sound is radiated from the second speaker to the ground on an inner side facing the second speaker of the buried groove. And a drainage part installed to drain the water flowing into the passage part from the ground at a portion where the second speaker and the passage part contact each other. The second speaker unit of claim 7, wherein the second speaker unit is installed at a portion adjacent to the ground of the passage part and connected to the signal processor to generate an error signal by detecting residual noise interfered by the second interference sound. Further includes a microphone,
The signal processor receives the error signal and generates a second interference signal that compensates for the interference signal to cancel the residual noise, and the second speaker generates a third interference sound according to the second interference signal. Roadside noise control device characterized in that the radiation to the negative.
KR1020110082201A 2011-08-18 2011-08-18 Apparatus for controlling roadside noise KR20130019905A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101373076B1 (en) * 2013-09-17 2014-03-12 온시스텍 주식회사 Real Time Floor Noise Canceling System
KR20230135317A (en) 2022-03-16 2023-09-25 주식회사 원일아이씨티 real-time interlayer noise control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101373076B1 (en) * 2013-09-17 2014-03-12 온시스텍 주식회사 Real Time Floor Noise Canceling System
KR20230135317A (en) 2022-03-16 2023-09-25 주식회사 원일아이씨티 real-time interlayer noise control system

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