Air quality detection system and detection method based on the information integration of plural sensors
A technology of air quality detection and air quality index, which is applied in the field of air quality detection system based on multi-sensor information fusion, can solve the problem of no sensor information optimization processing, etc., and achieve the effect of improving reliability and correctness
Active Publication Date: 2017-08-18
SOUTH CHINA UNIV OF TECH
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[0003]
At present, there are various air quality detection instruments on the market, and most of the detection instruments simply collect air parameters through gas sensors, and then directly display them on the LCD screen for users to consult, and do not make any adjustments to the collected sensor information. further optimization
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[0040] The present invention will be described in further detail below in conjunction with the accompanying drawings and based on specific actual data, but the embodiments of the present invention are not limited thereto.
[0041] figure 1 It is the composition of the air quality detection system and the corresponding flow chart. The detection system includes MQ131 ozone sensor, MQ7 carbon monoxide sensor, and Sharp PM2.5 dust sensor. The form of the voltage is sent to the analog-to-digital conversion chip ADC0832, and then the analog-to-digital conversion chip ADC0832 converts the collected analog data into digital data and sends it to the stc89c51 microcontroller; while the temperature sensor DS18B20 and the humidity sensor DHT11 are directly connected to the stc89c51 microcontroller and Send the data directly to the inside of the single-chip microcomputer; after the stc89c51 single-chip microcomputer receives the data, it performs arithmetic processing on the data according...
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The invention relates to an air quality detection system and a detection method based on the information integration of plural sensors. The system comprises a single-chip microcomputer, a plurality of air sensors, a pm2.5 sensor, a humidity and temperature sensor and a liquid crystal display circuit. According to the invention, through the plural air sensors, the pm2.5 sensor, the humidity and temperature sensor and the smoke sensor, it is possible to acquire the air quality parameters of a room. In combination with the mathematical modeling method and through the use of half mean variance and the hierarchical analyzing and weighting method, the obtained information parameters of the plurality of sensors are integrated as a normal parameter for air quality index so as to be further applied to an air quality measuring instrument or an air purifier. The system and the method of the invention can effectively improve the overall errors of the various sensors caused by their own hardware error influences and therefore, the credibility of the parameter for air quality index is increased.
Description
technical field [0001] The invention relates to the technical field of air quality detection, in particular to an air quality detection system based on multi-sensor information fusion and a detection method thereof. Background technique [0002] With the rapid development of modern industry and transportation, the emission of soot and automobile exhaust has surpassed the self-purification limit of the atmosphere, and what follows is a very serious problem-air pollution. Pollutants that have a greater impact on air pollution include: sulfur oxides, nitrogen oxides, hydrocarbons, carbon oxides, dust, etc. Air pollutants have a huge impact on our bodies, and the increasingly frequent smog weather since 2013 has seriously affected people's daily life. "Ecological civilization" is listed as one of the current important issues, adhere to the basic national policy of saving resources and protecting the environment, and strive to move towards a new era of ecological civilization. ...
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IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 陆展辉肖文勋沈栋李培辉邹泽宇李富盛林丹于俊杰姚蔚琳
Owner SOUTH CHINA UNIV OF TECH