The invention discloses a
smoking behavior recognition method based on multi-source
perception and particle size
fingerprint analysis, which comprises the following steps: arranging a particulate matter sensor module, continuously collecting a multi-channel particle size spectrum in a target space in a non-optical mode, and generating a high-resolution
particle size distribution sequence according to time; an
infrared sensor module is arranged to monitor entering and leaving states of personnel in real time; the short-term change of the concentration distribution of the particulate matters with different particle sizes is calculated through a parameterization formula, and the accurate judgment of the smoking event is realized in combination with the
personnel state and the PM2.5 speed increase in the same period. According to the invention, the
infrared sensing data stream and the particulate matter concentration
data stream are deeply analyzed, and the on-site state of personnel and the specific fluctuation mode of
cigarette smoke are accurately identified; through cross cooperation
verification of multi-dimensional features, interference of
water vapor, mosquito-repellent incense and non-artificial
smoke sources can be effectively eliminated, and unification of high detection precision and low
false alarm rate is achieved. According to the method,
imaging equipment is completely abandoned, and the risk of privacy disclosure is avoided from the source.