Low air pressure experiment device capable of setting and automatically controlling air pressure and oxygen content

Abstract

The invention discloses a low air pressure experiment device capable of setting and automatically controlling the air pressure and oxygen content. The device comprises a closed observation container,an oxygen detector, an oxygen storage container, a one-way electromagnetic valve, a pressure detector, an air pump, a controller, a processor and a control panel. The oxygen detector is connected withthe closed observation container; the one-way electromagnetic valve is connected with the closed observation container and the oxygen storage container separately; the pressure detector is connectedwith the closed observation container; the air pump is connected with the closed observation container; the controller is connected with the one-way electromagnetic valve and the air pump separately;the processor is connected with the controller, the oxygen detector and the pressure detector separately and used for calculating the operation time of the air pump and switch-on and switch-off time of the one-way electromagnetic valve according to the gas pressure value and the oxygen concentration value and sending a calculation result to the controller; the control panel is connected with the processor. According to the device, the low air pressure anaerobic state does not exist any more after air pumping, the low air pressure is maintained, the oxygen content also meets the experiment demand, and accordingly the testing result is more accurate.

Description

technical field [0001] The present application relates to the field of medical experiments, in particular to a low-pressure experimental device capable of setting and automatically controlling the air pressure and oxygen content. Background technique [0002] The pathogenic effect experiment of low air pressure mainly observes the general performance of animals in low air pressure, and understands the influence of central nervous system function state on hypoxia tolerance. The low-pressure experimental device is the necessary equipment for the low-pressure pathogenic effect experiment. The traditional method is to use two rubber tubes to connect the vacuum desiccator to the air extractor and the mercury decompression gauge respectively, press the power switch on the switchboard to start With the air pump, the air pressure is gradually reduced to 507mmHg (equivalent to an altitude of 3000m, and the oxygen content is 16.15%). Stop the air pumping and keep it for 3 to 5 minutes...

AI Technical Summary

Problems solved by technology

The disadvantage of this device is: the air pumps with different powers have different time to reach the set air pressure value. The time is also different. The experimental animals in the airtight observation container consume oxygen at any time. The longer the air pump runs, the lower the oxygen content in the airtight observation container. The reduced air pressure value is not proportional to the reduced oxygen content. Air will also cause more severe hypoxia in the observation container, resulting in inconsistent observation conditions among the groups and changes in various indicators. The experimental results between the groups are not comparable and have no statistical significance

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