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[ Focus on Chemical Machinery Equipment Network ] April 28, 2021 is the "International Noise Awareness Day".
The last Wednesday in April each year is defined as "International Noise Awareness Day" to remind people of noise issues.
Chemical machinery and equipment network hotspots pay attention to chemical machinery and equipmentThe last Wednesday in April each year is defined as "International Noise Awareness Day" to remind people of noise issues.
Since the Industrial Revolution in the 1860s, the development and use of various machinery and equipment has promoted the development and prosperity of human society, but at the same time it has also brought serious noise pollution problems.
Generally, a sound of 80 decibels or more will be judged as noise.
Noise pollution occurs when noise has a negative impact on people and the environment.
Generally, a sound of 80 decibels or more will be judged as noise.
Noise pollution occurs when noise has a negative impact on people and the environment.
Every day, we hear all kinds of sounds from nature and human society.
Some are beautiful and some are noisy.
The concept of noise is "the sounds we don't need.
" When we are sleeping, even the more pleasing piano sound is "noise".
Some are beautiful and some are noisy.
The concept of noise is "the sounds we don't need.
" When we are sleeping, even the more pleasing piano sound is "noise".
It is reported that noise pollution is very harmful to people.
It can damage hearing, vision, be harmful to people’s cardiovascular system, affect people’s nervous system, make people irritable, irritable, affect sleep, cause fatigue, and affect people’s lives.
Biological life causes people to get diseases, so it is essential to monitor noise.
Noise not only causes hearing damage and interferes with people's normal life, but also induces a variety of fatal diseases and seriously threatens human health.
Noise can be heard by the ears, and noise monitoring equipment cares for people's health.
Monitoring instrumentIt can damage hearing, vision, be harmful to people’s cardiovascular system, affect people’s nervous system, make people irritable, irritable, affect sleep, cause fatigue, and affect people’s lives.
Biological life causes people to get diseases, so it is essential to monitor noise.
Noise not only causes hearing damage and interferes with people's normal life, but also induces a variety of fatal diseases and seriously threatens human health.
Noise can be heard by the ears, and noise monitoring equipment cares for people's health.
The realization of scientific noise monitoring is inseparable from the use of noise monitoring instruments.
Common monitoring indicators for 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 sound pressure.
Commonly used noise measuring instruments include: sound level meters, noise testers, and environmental noise Automatic monitor, frequency analyzer, real-time analyzer, sound intensity analyzer, noise level analyzer, noise dosimeter, automatic recorder, tape recorder.
Common monitoring indicators for 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 sound pressure.
Commonly used noise measuring instruments include: sound level meters, noise testers, and environmental noise 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 handheld instrument with a microphone (microphone).
When sound propagates heavily in the air, sound waves will cause changes in air pressure.
The microphone can detect this change and convert it into an electrical signal to determine the value of the noise level based on the electrical signal.
When sound propagates heavily in the air, sound waves will cause changes in air pressure.
The microphone can detect this change and convert it into an electrical signal to determine the value of the noise level based on the electrical signal.
The automatic environmental noise 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 different monitoring areas, noise monitoring methods can be divided into grid point method, road section point method, staged fixed-point continuous monitoring method, etc.
sensorAccording to different monitoring areas, noise monitoring methods can be divided into grid point method, road section point method, staged fixed-point continuous monitoring method, etc.
In recent years, my country has successively formulated the "Environmental Noise Pollution Prevention and Control Law of the People's Republic of China", "Surface Traffic Noise Pollution Prevention and Control Technical Policies", "Guiding Opinions on Strengthening the Prevention and Control of Environmental Noise Pollution and Improving the Quality of Urban and Rural Acoustic Environment" in response to noise pollution.
Policy, and has successively formulated and promulgated more than one hundred noise and vibration standards.
These laws, regulations and standards have greatly promoted the development of noise and vibration control technology and the industry.
With the deepening of noise pollution control work, the people's awareness of the protection of the acoustic environment is becoming stronger, and "Quiet" will get closer and closer to us.
Policy, and has successively formulated and promulgated more than one hundred noise and vibration standards.
These laws, regulations and standards have greatly promoted the development of noise and vibration control technology and the industry.
With the deepening of noise pollution control work, the people's awareness of the protection of the acoustic environment is becoming stronger, and "Quiet" will get closer and closer to us.
Original title: Noise is affected by ear noise monitoring equipment to protect hearing health
