The new noise pollution control law will implement various instruments to monitor in June

[ Hot Focus on Chemical Machinery and Equipment Network ] On December 24, 2021, the 32nd meeting of the Standing Committee of the 13th National People's Congress of the People's Republic of China deliberated and passed the "Noise Pollution Prevention and Control Law of the People's Republic of China" (hereinafter referred to as the "Noise Pollution Prevention and Control Law of the People's Republic of China") Noise Pollution Prevention and Control Law), which will come into force on June 5, 2022
.

 

In the past, everyone's sensitivity to noise may not be so high
.
We all lived in the age of rumbling machines, striving for economic development
.
However, with the rapid development of the economy in recent years, everyone is pursuing the notice of material life, the pursuit of spiritual and civilized life is getting higher and higher, and there is a new understanding of the harmfulness of noise pollution, so the rejection of noise is more and more psychological.
strong
.
From the feedback from the people's livelihood survey in recent years, it can be reflected that there are more and more complaints about noise disturbing the people
.

 

Noise and dust monitoring system for building construction
.
At present, all local construction bureaus (construction committees) have expressly stipulated that construction sites within the jurisdiction must install noise and dust, video surveillance systems for remote monitoring, and video evidence collection
.
The online noise and dust monitoring system measures the particle concentration and noise level in the surrounding environment based on the light scattering counting method and sound sensing.
It replaces the past human resource management and control, and uses the Internet of Things to accurately measure PM2.
5, PM10, TSP, noise, etc.
around the construction site.
Factors and factors, then connect to the network with the management system of the relevant departments, and submit the data information immediately, so that the construction site can be dealt with in time for dust and noise problems
.

 

　　The realization of scientific noise monitoring is inseparable from the use of noise monitoring instruments
.
Common monitoring indicators of noise include: the intensity of noise, that is, the sound pressure in the sound field; the characteristics of noise, that is, the various frequency components of the sound pressure.
Automatic monitor, frequency analyzer, real-time analyzer, sound intensity analyzer, noise level analyzer, noise dosimeter, automatic recorder, tape recorder
.

 

　　Among them, the sound level meter is a hand-held instrument with a microphone (microphone)
.
When sound propagates heavily in the air, sound waves will cause changes in air pressure, which can be detected by microphones and converted into electrical signals, and the value of noise sound level can be determined according to the electrical signals
.
Sound level meter is the most basic instrument for measuring noise.
It belongs to an electronic instrument.
Sound level meter is generally composed of condenser microphone, preamplifier, attenuator, amplifier, frequency weighting network and RMS indicator
.
According to the sensitivity of the sound level meter, it can be divided into two categories, one is the ordinary sound level meter; the other is the precision sound level meter, which can also be divided into two categories according to the use of the sound level meter: One type is used to measure unsteady noise and impulse noise
.

 

　　The sound level meter adopts advanced digital detection technology, which greatly improves the stability and reliability of the instrument
.
The sound level meter has the advantages of simple operation and convenient use; it has the characteristics of large dynamic range, large-screen LCD digital display, automatic measurement and storage of various data,
etc.
Sound level meters can be widely used in industrial noise measurement and environmental noise measurement of various machines, vehicles, ships, electrical appliances, etc.
field of acoustic testing
.

 

　　The environmental noise automatic monitor uses a sound pressure sensor instead of a microphone as a device for detecting sound pressure, and has the functions of automatic data collection, storage and processing
.
According to the different monitoring areas, noise monitoring methods can be divided into grid distribution method, road segment distribution method, continuous monitoring method at fixed points in stages,
etc.

 

　　Noise tester is an instrument used for noise detection and testing in public places such as work sites and squares
.
Noise pollution is one of the most influential environmental pollutions.
High-decibel noise can even cause serious damage to people's eardrums, resulting in deafness
.
The application of the noise tester can provide the decibel of the noise in order to take relevant measures to control and reduce the noise
.
The measurement unit of sound size is decibel.
Professional noise tester has highly sensitive sensor, high precision, wide application range, and can be widely used for noise measurement in various environments
.

 

　　Source: Smart City Network, Encyclopedia
 

　　Original title: The new noise pollution control law will implement various instruments to monitor in June