Abstract: Through data collection and analysis of the user's cooking process of the temperature curve, analysis of the corresponding cooking behavior of the temperature curve characteristics, algorithm processing. Achieve not only can accurately judge the user fire and automatically open the smoke machine, but not only because of the interference of kitchen environment temperature change and wrong boot; Not only can accurately judge the user off the fire and automatic shutdown, and will not be in the small fire slow cooking process such as wrong shutdown; Not only can in the oil hot, pot explosion, add water, open the cover to view the larger scene of flue gas automatically increase the air volume, fast smoke exhaust net, achieve "net suction", but also in cooking and other smooth mode of flue gas scene, automatically reduce the air volume, reduce noise, achieve static suction; The overall cooking experience of users is greatly improved. There is no manual operation of the smoke machine during the whole cooking process, so as to satisfy the intelligent recognition of users' cooking behavior in the algorithm.

Key words: Range hoods, Intelligent identification, Algorithm