Detection method of air haze pollution grades

A detection method and level of technology, applied in the field of haze detection, to achieve the effects of high real-time performance, high reliability and low cost
CN106485281AInactive Publication Date: 2017-03-08่‘›ๅ˜‰่ฑช
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
่‘›ๅ˜‰่ฑช
Publication Date
2017-03-08
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses a detection method of air haze pollution grades. The detection method comprises steps of carrying out Fourier transform on images in different pollutions; quantitatively analyzing image quality in different pollution degrees; extracting edges and carrying out quantification to find out feature distribution rules; carrying out a high-frequency filtering experiment on images in different pollutions so as to filter low-frequency components in the images and obtain contrast ratio and entropy information in the images; carrying out Solbel image edge detection on the images, and by constructing matched window operators, carrying out convolution operation on original images so as to obtain image edge information; by combining results through comprehensive pollution judgment of image feature values and humidity information, carrying out judgment; by fusing pollution grades corresponding to the image information features, judging the humidity of a humidity sensor and outputting the pollution grade. According to the invention, by using the information technology to carry out standardization, unification of felt information and measurement information is facilitated, and the detection method is high in reliability and timeliness and low in cost.
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Description

technical field

[0001] The invention relates to the field of smog detection, in particular to a method for detecting air smog pollution levels. Background technique

[0002] Haze means that the aerosol system composed of dust, sulfuric acid, nitric acid and other particles in the haze air causes visual impairment. When water vapor condensation intensified and air humidity increased, haze would turn into fog. The difference between haze and fog is that the relative humidity is not high when haze occurs. Smog is common in cities. In many areas of China, fog is combined with haze as a disastrous weather phenomenon for early warning and forecasting, collectively referred to as "smog weather".

[0003] Smog is the result of the interaction between specific climatic conditions and human activities. The economic and social activities of a high-density population will inevitably emit a large amount of fine particulate matter (PM 2.5). Once the emission exceeds the atmospheric ci...

Claims

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