A device that simulates a real human cough

Abstract

The invention relates to an apparatus simulating coughing of a real human being. The apparatus comprises a particulate matter generation system including a particulate matter generator, an evacuation solenoid valve, a dust-adding solenoid valve and a dust-adding time control relay, and a compressed air jet generating system including an air compressor, a pressure gauge, a pressure-regulating valve, a flow control valve, a jet control solenoid valve, a jet time-control relay and a cylinder, wherein an air outlet pipe of the jet control solenoid valve and a pipe led out from the dust-adding solenoid valve of the particulate matter generation system are parallelly connected and then are connected to a coughing jet pipeline. This apparatus simulates coughing characteristics of a real human being, and meets the real human being coughing speed and flow rate, Jet speed change and temperature are consistent with the parameters of a real human being. Starting and stopping can be controlled only through solenoid valves, and operation is simple and accurate. A high-frequency hot line wind-velocity indicator is employed to determine the changing rules of gas flow velocity of a jet outlet. Parameters can be accurately determined according to the speed and flow curve of a measurement result calibrating device.

Description

technical field [0001] The invention relates to an important simulation device for studying the exposure level of human body pollutants and the transmission of cough pollutants in building rooms, is a device for simulating real human coughs, and belongs to the field of indoor air quality and pollutant transmission. Background technique [0002] In recent years, airborne diseases have seriously threatened people's health. For example, SARS, influenza virus and Ebola virus, which is raging in Africa, can spread in the air through droplets. Coughing is a major source of droplets. Inhalation of air with this virus can cause disease. [0003] Since the first confirmed case of SARS in 2003, SARS has quickly spread around the world. One of the major ways of transmission is on the plane. The infected body spreads the virus to the surrounding air through breathing and coughing. Healthy people pass through Viruses are contracted by inhaling virus-contaminated air. According to stati...

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Problems solved by technology

[0005] The subject of cough research is human, but from the perspective of safety and health, it is difficult to conduct experiments on real human bodies

Moreover, in terms of the repeatability of the experiment, the uncertainty of real people is large, and there are large differences between different people. Therefore, it is necessary to develop a device that can simulate the cough function of real human beings with different parameters.

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