Intelligent control system for ventilation cabinet used for laboratory

Abstract

The invention discloses an intelligent control system for a ventilation cabinet used for a laboratory. The intelligent control system comprises a detecting unit, a collecting unit, a ventilating unit, a timing unit and a control unit. The detecting unit is used for detecting whether people exist in an experiment operation area or not. The collecting unit is used for beginning to collect the gas concentration in the ventilation cabinet every other t time when the detecting unit detects that people exist in the experiment operation area, and the gas concentration in the ventilation cabinet is recorded as C1, C2,..., Cn. The ventilating unit is used for conducting ventilating on the interior of the ventilation cabinet. The timing unit is in communication connection with the control unit and obtains time information through the timing unit. The control unit is in communication connection with the detecting unit, the collecting unit and the ventilating unit, obtains the gas concentrate C1, C2,..., Cn in the ventilation cabinet through the collecting unit and controls the ventilating unit to act according to the C1, C2,..., Cn and a time information instruction.

Description

technical field [0001] The invention relates to the technical field of intelligent control of fume hoods, in particular to an intelligent control system for laboratory fume hoods. Background technique [0002] Fume hood is an essential kind of laboratory furniture. It plays the role of exhaust and ventilation in the laboratory. The traditional fume hood is mainly to control the toxic and harmful gas in the fume hood through the exhaust fan, and force the toxic and harmful gas to be discharged outside to prevent and control the harm to the human body caused by the harmful gas. However, due to the incompleteness of the exhaust, the staff are often exposed to toxic gases. At the same time, although some fume hood doors are opened automatically, they are only isolated systems that are not convenient for overall adjustment, so their performance is not high. . [0003] Therefore, it is necessary to design a system for real-time collection and analysis of the gas concentration i...

AI Technical Summary

Problems solved by technology

However, due to the incompleteness of the exhaust, the staff are often exposed to toxic gases. At the same time, although some fume hood doors are opened automatically, they are only isolated systems that are not convenient for overall adjustment, so their performance is not high.

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