CN110010118B - Noise active control system integrated in road lighting system - Google Patents
Noise active control system integrated in road lighting system Download PDFInfo
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- CN110010118B CN110010118B CN201910303742.4A CN201910303742A CN110010118B CN 110010118 B CN110010118 B CN 110010118B CN 201910303742 A CN201910303742 A CN 201910303742A CN 110010118 B CN110010118 B CN 110010118B
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- 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
- G10K11/1781—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 characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
- G10K11/17821—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 characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
- G10K11/17823—Reference signals, e.g. ambient acoustic environment
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- 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
- G10K11/1785—Methods, e.g. algorithms; Devices
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- 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
- G10K11/1787—General system configurations
- G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a noise active control system integrated in a road lighting system, and belongs to the field of road noise reduction. The system at least comprises two noise active control street lamps; the ith noise active control street lamp is connected with the (i + 1) th noise active control street lamp; the ith noise active control street lamp collects ith vibration noise data, receives ith-1 vibration noise data and ith-1 control output quantity, obtains a noise control evaluation result according to the vibration noise data and the control output quantity, evaluates and adjusts a noise control algorithm according to the noise control evaluation result, obtains ith control output quantity according to the ith vibration noise data and the noise control algorithm, controls a loudspeaker to output sound waves, and sends the ith vibration noise data and the ith control output quantity; the problems that the existing road lighting system cannot actively eliminate noise and the noise control effect of road vehicles is poor are solved; the method achieves the effects of fully considering the resources of the road lighting system and improving the active noise control.
Description
Technical Field
The embodiment of the invention relates to the field of road noise reduction, in particular to a noise active control system integrated in a road lighting system.
Background
The vehicle can send noise of different degrees when driving on the road, and vehicle noise not only can cause the interference to driver, passenger and pedestrian, still can cause the puzzlement to living, work at the life and the work of the people on road both sides, for example can reduce the life comfort level of resident family of living, reduces staff's work efficiency, and serious still can cause harm to people's spirit. In addition, in some suburbs, although there are few people living and working, the surrounding of the road may be raised by poultry and livestock, and the noise of the vehicle may adversely affect the normal growth and reproduction of the poultry and livestock.
Disclosure of Invention
To solve the problems of the prior art, embodiments of the present invention provide an active noise control system integrated in a road lighting system. The technical scheme is as follows:
in a first aspect, a noise active control system integrated in a road lighting system is provided, which is characterized by comprising at least two noise active control street lamps, wherein each noise active control street lamp comprises an acceleration sensor, a controller, a microphone and a loudspeaker;
the ith noise active control street lamp is connected with the (i + 1) th noise active control street lamp on the same side of the road; i is an integer, and the initial value of i is 1;
in the ith noise active control street lamp, ith vibration noise data is collected through an acceleration sensor and a microphone, ith-1 vibration noise data and ith-1 control output quantity sent by the ith-1 noise active control street lamp are received through a controller, a noise control evaluation result is obtained through the controller according to the ith vibration noise data, the ith-1 vibration noise data and the ith-1 control output quantity, a noise control algorithm is evaluated and adjusted according to the noise control evaluation result, the ith control output quantity is obtained according to the ith vibration noise data and the noise control algorithm, the amplitude and the frequency of sound waves output by a loudspeaker are controlled according to the ith control output quantity through the controller, and the ith vibration noise data and the ith control output quantity are sent to the (i + 1) noise active control street lamp through the controller.
Optionally, the controller of the ith noise active control street lamp and the controller of the (i + 1) th noise active control street lamp establish a wireless connection or a wired connection.
Optionally, in each noise active control street lamp, the acceleration sensor is located at a base of the noise active control street lamp, the microphone and the speaker are located near a lamp of the noise active control street lamp, and the controller is disposed in a support structure of the noise active control street lamp.
Optionally, the noise control algorithm is an adaptive feedforward control algorithm.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the noise active control system integrated in the road lighting system at least comprises 2 noise active control street lamps, each noise active control street lamp comprises an acceleration sensor, a controller, a microphone and a loudspeaker, wherein on one side of a road, the ith noise active control street lamp is in wired connection or wireless connection with the (i + 1) th noise active control street lamp, the ith noise active control street lamp acquires the ith vibration noise data, receives the (i-1) th vibration noise data and the (i-1) th control output quantity sent by the (i-1) th noise active control street lamp, the ith noise active controller compares the data sent by the (i-1) th noise active control street lamp with the data acquired by the ith noise active control street lamp to verify the noise control effect and adjusts the noise control algorithm according to the noise control condition, the ith noise active control street lamp obtains the ith control output quantity according to the ith vibration noise data and the noise control algorithm, the ith vibration noise data and the ith control output quantity are sent to the (i + 1) th noise active control street lamp, and the active noise elimination of the automobile noise is realized by respectively collecting the vibration noise data of the automobile and forming an adaptive feedforward control system method through networking by utilizing that the propagation speed of the vibration in the solid is higher than that of the sound in the air; the problems that the existing road lighting system cannot actively eliminate noise and the noise control effect of road vehicles is poor are solved; the method and the device have the advantages that the resources of the road lighting system are fully considered, the road vehicle noise can be added conveniently in the design stage to actively eliminate the noise or the existing road lighting system can be modified conveniently, and the effect of actively controlling the noise is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating a noise active control system integrated with a roadway lighting system in accordance with an exemplary embodiment;
fig. 2 is a schematic diagram illustrating a noise active control system integrated with a roadway lighting system according to an exemplary embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 illustrates an active noise control system integrated in a road lighting system according to an embodiment of the present invention. The noise active control system integrated in the road lighting system is disposed on two sides of the road or on one side of the road, and the noise active control system on each side includes at least two noise active control street lamps 110.
As shown in fig. 2, each of the noise active control street lamps 110 includes a controller 111, an acceleration sensor 112, a microphone 113, and a speaker 114; the controller 111 is connected to the acceleration sensor 112, the microphone 113, and the speaker 114.
In each of the noise active control street lamps, the acceleration sensor 112 is located at the base of the noise active control street lamp, the microphone 113 and the speaker 114 are located near the lamp 115 of the noise active control street lamp, and the controller 111 is disposed within the support structure of the noise active control street lamp 110.
The acceleration sensor 112 is used to measure ground vibration when the vehicle travels through a road, the microphone 113 is used to measure car noise, and the speaker 114 is used to actively cancel the noise.
On the same side of the road, the ith noise active control street lamp is connected with the (i + 1) th noise active control street lamp.
Optionally, the controller of the ith noise active control street lamp is wirelessly connected or wired with the (i + 1) th noise active control street lamp.
i is an integer and the initial value of i is 1.
In the ith noise active control street lamp:
the acceleration sensor 112 and the microphone 113 acquire ith vibration noise data, and the controller 111 receives the ith-1 vibration noise data and the ith-1 control output quantity sent by the ith-1 noise active control street lamp.
And the controller obtains a noise control evaluation result according to the ith vibration noise data, the ith-1 vibration noise data and the ith-1 control output quantity, and evaluates and adjusts a noise control algorithm according to the noise evaluation result.
Optionally, the controller compares the ith vibration noise data with the ith-1 vibration noise data to obtain a comparison result, and evaluates the ith-1 control output quantity obtained by the noise control algorithm in the ith-1 noise active control street lamp according to the comparison result to obtain a noise evaluation result; and if the obtained noise evaluation result indicates that the control effect of the i-1 st noise active control street lamp does not meet the preset requirement, adjusting the noise control algorithm according to the noise evaluation result, and if the obtained noise evaluation result indicates that the control effect of the i-1 st noise active control street lamp meets the preset requirement, not adjusting the noise control algorithm. Optionally, the preset requirement is preset.
Optionally, the noise control algorithm is an adaptive feedforward control algorithm, such as: LMS algorithm, RLS algorithm, Leaky LMS algorithm, Filtered-Error LMS algorithm.
The controller obtains the ith control output quantity according to the ith vibration noise data and the noise control algorithm.
Optionally, when the noise control algorithm is adjusted, the controller obtains an ith control output according to the ith vibration noise data and the adjusted noise control algorithm.
The controller controls the amplitude and frequency of the sound wave output from the speaker 114 according to the ith control output amount.
And the controller sends ith vibration noise data and ith control output quantity to the (i + 1) th noise active control street lamp.
It should be noted that, when the ith noise active control street lamp is the 1 st street lamp on each side of the road, the controller of the 1 st noise active control street lamp does not receive the vibration noise data and the control output quantity, and only sends the 1 st vibration noise data and the 1 st control output quantity to the 2 nd noise active control street lamp.
In addition, the 1 st noise active control street lamp on each side of the road is determined by the driving direction of the automobile, such as: when the automobile runs from left to right, the leftmost noise active control street lamp is the 1 st noise active control street lamp; when the automobile runs from right to left, the rightmost noise active control street lamp is the 1 st noise active control street lamp. The 1 st noise active control street lamp on each side of the road is determined according to the actual driving direction of the automobile, the noise active control street lamp A can be the 1 st noise active control street lamp in a period of time, and the noise active control street lamp B can also be the 1 st noise active control street lamp in another period of time.
To sum up, the noise active control system integrated in the road lighting system provided by the embodiment of the present invention at least includes 2 noise active control street lamps, each of which includes an acceleration sensor, a controller, a microphone and a speaker, at one side of the road, the ith noise active control street lamp is in wired connection or wireless connection with the (i + 1) th noise active control street lamp, the ith noise active control street lamp collects the ith vibration noise data, receives the (i-1) th vibration noise data and the (i-1) th control output quantity sent by the (i-1) th noise active control street lamp, the ith noise active controller compares the data sent by the (i-1) th noise active control street lamp with the data collected by itself to verify the noise control effect, and adjusts the noise control algorithm according to the noise control condition, the ith noise active control street lamp obtains ith control output quantity according to ith vibration noise data and a noise control algorithm, the ith vibration noise data and the ith control output quantity are sent to the (i + 1) th noise active control street lamp, and active noise elimination of automobile noise is realized by respectively collecting vibration noise data of vehicles and forming an adaptive feedforward control system method through networking by utilizing that the propagation speed of vibration in a solid is higher than that of sound in the air; the problems that the existing road lighting system cannot actively eliminate noise and the noise control effect of road vehicles is poor are solved; the method and the device have the advantages that the resources of the road lighting system are fully considered, the road vehicle noise can be added conveniently in the design stage to actively eliminate the noise or the existing road lighting system can be modified conveniently, and the effect of actively controlling the noise is improved.
It should be noted that: the above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A noise active control system integrated in a road lighting system is characterized by comprising at least two noise active control street lamps, wherein each noise active control street lamp comprises an acceleration sensor, a controller, a microphone and a loudspeaker;
the ith noise active control street lamp is connected with the (i + 1) th noise active control street lamp on the same side of the road; i is an integer, and the initial value of i is 1;
in the ith noise active control street lamp, the ith vibration noise data is collected through an acceleration sensor and a microphone, the ith-1 vibration noise data and the ith-1 control output quantity sent by the ith-1 noise active control street lamp are received through a controller, a noise control evaluation result is obtained through the controller according to the ith vibration noise data, the ith-1 vibration noise data and the ith-1 control output quantity, a noise control algorithm is evaluated and adjusted according to the noise control evaluation result, the ith control output quantity is obtained according to the ith vibration noise data and the noise control algorithm, the amplitude and the frequency of sound waves output by a loudspeaker are controlled according to the ith control output quantity through the controller, the ith vibration noise data and the ith control output quantity are sent to the (i + 1) noise active control street lamp through the controller, wherein adjusting the noise control algorithm comprises: the controller compares the ith vibration noise data with the ith-1 vibration noise data to obtain a comparison result, and evaluates the ith-1 control output quantity obtained by a noise control algorithm in the ith-1 noise active control street lamp according to the comparison result to obtain a noise evaluation result; and if the obtained noise evaluation result indicates that the control effect of the i-1 st noise active control street lamp does not meet the preset requirement, adjusting the noise control algorithm according to the noise evaluation result, and if the obtained noise evaluation result indicates that the control effect of the i-1 st noise active control street lamp meets the preset requirement, not adjusting the noise control algorithm.
2. The active noise control system integrated in a road lighting system as claimed in claim 1, wherein the controller of the ith noise active control street lamp is wirelessly connected or wired with the controller of the (i + 1) th noise active control street lamp.
3. The active noise control system integrated with a road lighting system according to claim 1, wherein in each active noise control street lamp, the acceleration sensor is located at a base of the active noise control street lamp, the microphone and the speaker are located near a lamp of the active noise control street lamp, and the controller is disposed within a support structure of the active noise control street lamp.
4. The active noise control system integrated with a road lighting system according to claim 1, wherein the noise control algorithm is an adaptive feedforward control algorithm.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184730A (en) * | 2011-02-17 | 2011-09-14 | 南京大学 | Feed-forward active noise barrier |
| US20120076328A1 (en) * | 2010-09-23 | 2012-03-29 | Ronald Paul Harwood | Acoustic reflector |
| CN103632666A (en) * | 2013-11-14 | 2014-03-12 | 华为技术有限公司 | Voice recognition method, voice recognition equipment and electronic equipment |
| EP2782093A2 (en) * | 2013-03-21 | 2014-09-24 | Honda Motor Co., Ltd. | Vehicular active vibrational noise control apparatus |
| CN105719637A (en) * | 2016-04-14 | 2016-06-29 | 天津宝舟科技有限公司 | Noise energy conversion device |
| CN205827914U (en) * | 2016-06-29 | 2016-12-21 | 广州恒成智道信息科技有限公司 | Indoor active noise reducing device |
| CN106289404A (en) * | 2016-08-27 | 2017-01-04 | 薛晓辉 | A kind of device saving Building Power Distribution facility power consumption |
| CN106358123A (en) * | 2016-08-26 | 2017-01-25 | 彭胜 | Intelligent community environment monitoring system |
| CN106448649A (en) * | 2016-09-26 | 2017-02-22 | 郑州云海信息技术有限公司 | Centralized control method, device, and system for multiple electronic noise reduction devices |
| CN106525220A (en) * | 2015-09-15 | 2017-03-22 | 哈曼贝克自动系统股份有限公司 | Noise and vibration sensing |
| CN108140375A (en) * | 2015-09-25 | 2018-06-08 | 哈曼贝克自动系统股份有限公司 | Noise and vibration-sensing |
| CN108696793A (en) * | 2017-03-30 | 2018-10-23 | 株式会社斯巴鲁 | Vehicle silencing apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080107820A (en) * | 2007-06-08 | 2008-12-11 | 레인보우스케이프주식회사 | Noise reduction apparatus and method using offset of frequency without soundproof walls |
-
2019
- 2019-04-16 CN CN201910303742.4A patent/CN110010118B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120076328A1 (en) * | 2010-09-23 | 2012-03-29 | Ronald Paul Harwood | Acoustic reflector |
| CN102184730A (en) * | 2011-02-17 | 2011-09-14 | 南京大学 | Feed-forward active noise barrier |
| EP2782093A2 (en) * | 2013-03-21 | 2014-09-24 | Honda Motor Co., Ltd. | Vehicular active vibrational noise control apparatus |
| CN103632666A (en) * | 2013-11-14 | 2014-03-12 | 华为技术有限公司 | Voice recognition method, voice recognition equipment and electronic equipment |
| CN106525220A (en) * | 2015-09-15 | 2017-03-22 | 哈曼贝克自动系统股份有限公司 | Noise and vibration sensing |
| CN108140375A (en) * | 2015-09-25 | 2018-06-08 | 哈曼贝克自动系统股份有限公司 | Noise and vibration-sensing |
| CN105719637A (en) * | 2016-04-14 | 2016-06-29 | 天津宝舟科技有限公司 | Noise energy conversion device |
| CN205827914U (en) * | 2016-06-29 | 2016-12-21 | 广州恒成智道信息科技有限公司 | Indoor active noise reducing device |
| CN106358123A (en) * | 2016-08-26 | 2017-01-25 | 彭胜 | Intelligent community environment monitoring system |
| CN106289404A (en) * | 2016-08-27 | 2017-01-04 | 薛晓辉 | A kind of device saving Building Power Distribution facility power consumption |
| CN106448649A (en) * | 2016-09-26 | 2017-02-22 | 郑州云海信息技术有限公司 | Centralized control method, device, and system for multiple electronic noise reduction devices |
| CN108696793A (en) * | 2017-03-30 | 2018-10-23 | 株式会社斯巴鲁 | Vehicle silencing apparatus |
Non-Patent Citations (3)
| Title |
|---|
| A computationally efficient multichannel active road noise control system;Duan J, Li M, Lim T C, et al.;《Journal of Dynamic Systems, Measurement, and Control》;20150131;第137卷(第1期);全文 * |
| Active noise control: a tutorial review;Kuo S M, Morgan D R;《Proceedings of the IEEE》;19990630;第87卷(第6期);全文 * |
| 城市交通噪声传播机理与控制技术研究;马甲亮;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20160415;全文 * |
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