"Research on Noise Control and Assessment with Detection Camera
「"Research on Noise Control and Assessment with Detection Camera 」於資料集「EPQSummary_NoiseAndVibration」由單位「行政院環境保護署」的陳先生所提供，聯繫電話是02-2311-7722#2386，最近更新時間為：2023-07-30 01:01:50。 欄位Project Title的內容是"Research on Noise Control and Assessment with Detection Camera System Applied to In-use Motor Vehicles" ， 欄位Project Subject的內容是"Among the petitions submitted in recent years, many have been complaining against the big noise made by modified vehicles and motorcycles roaring past during the night, causing serious disturbance of tranquility and sleep. To pursue the fad, many young people modify their cars or motorcycles by taking off the silencer, causing a big noise when they whistle past. Whether it happens during the daytime or in the night, the noise is very annoying. Particularly when it is late at night, the annoying noise disturbs people’s sweet dreams. A lot of complaints or petition calls have been received, complaining against the big noise made by modified cars and motorcycles (with silencer taken off or other modifications) for seriously disturbing people’s sleep, while they are whistling past during the nighttime. Therefore, it is necessary to assess the effect of applying the detection camera system to in-use motor vehicles in order to enhance the execution efficiency of screening of high-noise motor vehicles and “block checks” through “excessive noise camera” technology, so as to achieve our goals of improving the living environment quality of the public, people’s health and lifestyle, and sustainability. The main achievements of this year are as follows:
1. Completed collection of the noise sources of in-use motor vehicles and related information on the noise meter.
(1) Traditionally, engine noise is the main source of noises generated by in-use motor vehicles. However, with the improvement of pavement conditions, tire noise has become another noise source when vehicles are running at high speeds. Generally speaking, when vehicles run at lower speeds and the pavement is dry, the engine noise constitutes the main portion of the overall noise. On the other hand, when vehicles run at higher speeds and the pavement is wet, the tire noise constitutes the main portion. However, the proportion of noise accounted for by each noise source varies from vehicle to vehicle.
(2) In terms of spectral features of the noise and propagation properties, the overall noise of the vehicle increases due to the increase of transmission system noise as the gear is lifted to a higher level. The spectrum of the overall noise is also related to such factors as vehicle speed, gear position, load, and vehicle type. The mid-high frequency noise increases with the decrease of gear level and increase of engine speed. With the increase of vehicle speed, the spectral curve rises, particularly at mid-high frequency bands. In terms of motor vehicle noise control, other than taking control measures at the noise source and propagation path, such as improving the engine structure and installing the exhaust muffler, noise control measures can also be taken at the receiving end, such as soundproof windows.
(3) The rationale of array microphones and application examples:
In a microphone array, dozens of microphones are usually deployed to collect sound signals simultaneously, which will be turned into “sound pictures” and “sound videos” by rear-end signal processing algorithms in order to show the location of noise sources in a real-time and intuitive manner. In terms of application examples, “NoivelCam”, an independent integrated vehicle noise tracing system designed and developed by Nanyang Technological University, has been used to monitor single-lane noise on expressways. In addition, in order to regulate illegal horning, China has adopted the sonar camera (source location) system in cities such as Shanghai, Nanjing, Shenyang, and Shenzhen to help the police deal with traffic violations of such kind with high technologies.
(4) The rationale of non-array directional microphones and application examples:
Collected a bunch of directional microphones, including interference and overlying type, planar reflection type, parabolic reflection type, ellipsoid reflection type, sound lens t..." ， 欄位Project Year的內容是2018 ， 欄位Organizer的內容是"Department of Air Quality Protection ＆amp; Noise Control" ， 欄位Executive Unit的內容是"環境永續工程顧問有限公司" ， 欄位Reporting download URL的內容是https://epq.epa.gov.tw/project/filedownload.aspx?fid=186427 ， 欄位Publish Date的內容是20190131 。
Project Title
"Research on Noise Control and Assessment with Detection Camera System Applied to In-use Motor Vehicles"
Project Subject
"Among the petitions submitted in recent years, many have been complaining against the big noise made by modified vehicles and motorcycles roaring past during the night, causing serious disturbance of tranquility and sleep. To pursue the fad, many young people modify their cars or motorcycles by taking off the silencer, causing a big noise when they whistle past. Whether it happens during the daytime or in the night, the noise is very annoying. Particularly when it is late at night, the annoying noise disturbs people’s sweet dreams. A lot of complaints or petition calls have been received, complaining against the big noise made by modified cars and motorcycles (with silencer taken off or other modifications) for seriously disturbing people’s sleep, while they are whistling past during the nighttime. Therefore, it is necessary to assess the effect of applying the detection camera system to in-use motor vehicles in order to enhance the execution efficiency of screening of high-noise motor vehicles and “block checks” through “excessive noise camera” technology, so as to achieve our goals of improving the living environment quality of the public, people’s health and lifestyle, and sustainability. The main achievements of this year are as follows: 1. Completed collection of the noise sources of in-use motor vehicles and related information on the noise meter. (1) Traditionally, engine noise is the main source of noises generated by in-use motor vehicles. However, with the improvement of pavement conditions, tire noise has become another noise source when vehicles are running at high speeds. Generally speaking, when vehicles run at lower speeds and the pavement is dry, the engine noise constitutes the main portion of the overall noise. On the other hand, when vehicles run at higher speeds and the pavement is wet, the tire noise constitutes the main portion. However, the proportion of noise accounted for by each noise source varies from vehicle to vehicle. (2) In terms of spectral features of the noise and propagation properties, the overall noise of the vehicle increases due to the increase of transmission system noise as the gear is lifted to a higher level. The spectrum of the overall noise is also related to such factors as vehicle speed, gear position, load, and vehicle type. The mid-high frequency noise increases with the decrease of gear level and increase of engine speed. With the increase of vehicle speed, the spectral curve rises, particularly at mid-high frequency bands. In terms of motor vehicle noise control, other than taking control measures at the noise source and propagation path, such as improving the engine structure and installing the exhaust muffler, noise control measures can also be taken at the receiving end, such as soundproof windows. (3) The rationale of array microphones and application examples: In a microphone array, dozens of microphones are usually deployed to collect sound signals simultaneously, which will be turned into “sound pictures” and “sound videos” by rear-end signal processing algorithms in order to show the location of noise sources in a real-time and intuitive manner. In terms of application examples, “NoivelCam”, an independent integrated vehicle noise tracing system designed and developed by Nanyang Technological University, has been used to monitor single-lane noise on expressways. In addition, in order to regulate illegal horning, China has adopted the sonar camera (source location) system in cities such as Shanghai, Nanjing, Shenyang, and Shenzhen to help the police deal with traffic violations of such kind with high technologies. (4) The rationale of non-array directional microphones and application examples: Collected a bunch of directional microphones, including interference and overlying type, planar reflection type, parabolic reflection type, ellipsoid reflection type, sound lens t..."
Project Year
2018
Organizer
"Department of Air Quality Protection ＆amp; Noise Control"
Executive Unit
"環境永續工程顧問有限公司"
Reporting download URL
Publish Date
20190131
「"Research on Noise Control and Assessment with Detection Camera 」所屬的資料集：「EPQSummary_NoiseAndVibration」的其他資料
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This project has been executed since Jan.,
2020 , including motor
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2020
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The Noise Control Management Information System and Noise Control Information Web Update and Mainten
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2015
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Department of Air Quality Protection ＆amp; Noise Control
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Assistance and Inspection of Noise complaint Case and Noise Source for Taipei City(2004)
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Established the database most complained noise sources and their noise control measures among entert
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2004
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Department of Environmental Protection, Taipei City Government
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Investigation of environmental low-frequency noise and vibration and research projet for improvement
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The number of people affected by noise and vibration are increased by the days, and the quality of l
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2015
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Department of Air Quality Protection ＆amp; Noise Control
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The check of the theoretical noise models for noise abatement plan of ground transportation systems
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Since the noise regulation of land-based transportation takes effect, all the noise complaints that
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Non-ionizing radiation - emission source selected and the advocacy of the National Geographic Inform
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The goal of this project was focused on the measurement and analysis of non-ionization radiation emi
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2012
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Department of Air Quality Protection ＆amp; Noise Control
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2016 Taipei City Noise Control Project
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In Taipei City, because the population and building density is very high, and various business activ
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2016
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Department of Environmental Protection, Taipei City Government
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"Plan for Demonstration and Positive Effect of Noise Management and Controlled Acoustic Ventilation
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"The Association has completed various project work contents in obedience to the contract requiremen
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2019
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"Department of Air Quality Protection ＆amp; Noise Control"
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The urban area in Taiwan is complex and small, the residential complex mixed commercial area that ca
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Motor vehicles emission testing institutions checking project of 2019
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The project was in accordance with「Regulations Governing Motor Vehicle Air Pollutant and Noise Emiss
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2019
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The project for joint inspection、exhaust pipe certification and control of vehicle noise.
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This project assisted the EPA in operating the in-use vehicles noise reporting website system, and t
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2019
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2021 Traffic Noise and Green Energy-saving Noise Abatement Technology Survey
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1.To establish a demonstrative environmental protection rating mechanism on aircraft noise in our co
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2021
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2016
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Environmental Protection Bureau, Chiayi City (CYCEPB) has set up the 24 hours Environmental Public N
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As diesel engine has high output horsepower, it consumes relatively less fuel comparing with petrol
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2020
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Environmental Protection Bureau, Chiayi City
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2009 Air Quality Operating and Maintaining Stations, Visibility Investigation and Indoor Air Quality
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This project is executed from March 20, 2009 to March 19, 2010 and was budgeted 7,930 thousand New T
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"Aviation Noise Control Project"
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"Defects are commonly seen in the operation of the aviation noise monitoring stations and control (m
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"Department of Air Quality Protection ＆amp; Noise Control"
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""
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"According to the statistics from Establishing Public Nuisance Petitions Processing Procedures of En
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"Environmental Protection Bureau, Chiayi City"
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98 Tainan City noise monitoring plan
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This plan is to complete the operation and public pleads in the noise monitoring of Tainan City appl
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Environmental Protection Bureau of Tainan City
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This study collected and reviewed the measurement results of traffic and environmental noise from en
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Department of Air Quality Protection ＆amp; Noise Control
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"This project assisted the EPA to operate and maintain the in-use vehicles noise reporting website s
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Since there is still much room for improvement regarding the performance of aviation noise monitorin
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"This project focused on the noise pollution and was principally categorized into eight parts: 1) co
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Through the implementation of this project, it is hoped to understand the current situation and tren
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This plan analyzed the noise complaint cases in recent years, and compared social and economic facto
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