Open AccessIntelligent anti‐epidemic mask based on KF and ECF fusion algorithm
Author(s) -
Xia Kun,
Li Xiang,
Li Xueyong,
Liu Yiren,
Zhang Hongwei,
Hou Ruifeng
Publication year - 2021
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/ell2.12240
Subject(s) - kalman filter , sensor fusion , fusion , algorithm , computer science , filter (signal processing) , acceleration , basis (linear algebra) , photoelectric sensor , control theory (sociology) , computer vision , control (management) , artificial intelligence , engineering , mathematics , mechanical engineering , physics , philosophy , linguistics , geometry , classical mechanics
Abstract In response to environmental pollution and the spread of Coronavirus Disease 2019 (COVID‐19), this paper proposes a new type of smart mask design, and specifically proposes an optimized double closed‐loop control method, especially an improved filtering fusion algorithm. Using the filtering fusion algorithm proposed in this paper, after the Kalman filter (KF) filters the raw data of the attitude sensor, explicit complementary filtering and data fusion are used to obtain the attitude angle of the body. At the same time, the obtained attitude angle is combined with acceleration and blood oxygen concentration to obtain the behaviour characteristic value. On this basis, the speed of the oxygen supply fan captured by the photoelectric sensor is used to form a closed loop with the characteristic value of the behaviour. Finally, the structure of the mask is upgraded and optimized through fluid mechanics simulation, and experiments have verified that the combination of the replaceable filter cloth, the intelligent control system and the ultraviolet disinfection device can effectively protect people's health.