Automatic identification and monitoring system for indoor noise pollution

Abstract

The invention relates to the field of monitoring, and particularly relates to an automatic identification and monitoring system for indoor noise pollution. Firstly, the sample collection of a noise signal is conducted by an FPGA multi-channel microphone array. Secondly, the pre-treatment, the characteristic extraction and the characteristic selection of the noise signal are conducted by a digital signal processor (DSP), and a characteristic model is established for the noise signal at a cloud end. Thirdly, the noise monitoring information corresponding to a noise source is identified based on the technique matched with the noise signal characteristic mode. Finally, the noise identification information is graphically displayed on a main interface. According to the technical scheme of the invention, users can be effectively aware of noise pollution hazards. Meanwhile, users are reminded of getting away from noise hazards and actively taking prevention measures. Meanwhile, the living environment is improved. furthermore, the system plays a positive role in promoting the economic development.

Description

technical field [0001] The invention relates to the field of monitoring, in particular to an automatic identification and monitoring system for indoor noise pollution. Background technique [0002] Noise pollution is an environmental problem that the whole world is very concerned about. Excessive environmental noise will have a certain impact on people's physical and mental health. High noise environment can cause serious damage to people's hearing and physical health. The general noise will have a certain impact on people's daily work and life. According to statistics, noise pollution has caused varying degrees of harm to more than 70% of urban residents worldwide. As a developing country, China's noise pollution has a more prominent impact on the people. Environmental noise monitoring is an important link for human beings to improve the quality of life and strengthen environmental protection. In the bustling streets and residential areas of major cities, large-scale env...

AI Technical Summary

Problems solved by technology

[0003] At present, domestic portable noise testers are mostly expensive imported special equipment, which cannot be popularized as civilian products except those owned by environmental protection departments such as sanitation and measurement.

Most noise monitoring instruments use integrated statistical sound level meters with single-chip processing functions, which are portable instruments. The sensitivity of these sound level meters changes with air pressure, temperature and humidity, which affects the measurement accuracy and requires frequent calibration. It is difficult to apply in daily life scenes

Especially in the monitoring of indoor environmental noise, because most of the indoor noise is low-frequency noise, it is difficult for traditional sound pressure meters to accurately classify and identify noise sources, and it is even more difficult to provide users with accurate monitoring information of indoor environmental noise pollution.

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