Design And Realization On Measurement System Of Respiratory Mechanics Parameter

Respiration is an important physiological process of human being,in the modern medical monitoring technology,respiratory monitoring is an important part.Especially in medical science research,kinesiology and military medicine,respiratory monitoring is an important physiological index.At present,with the improvement of people's life,more and more people begin to pay attention to monitoring of physical condition including respiratory monitoring.In the monitoring of respiration,the monitoring of respiratory mechanics parameters is an important method for the evaluation of respiratory function,which is helpful to know the pathology and physiology.Respiratory mechanics parameters have become an important tool in some medical applications.Nowadays,the respiratory monitoring mainly focuses on the concentration of carbon dioxide at home and abroad and the monitoring method is single.However,with the improvement of the people's attention to the respiratory monitoring and emphasis on the monitoring of self-respiratory function,people are not satisfied with the only monitoring of the concentration of carbon dioxide.In this study,we did the research from the point of view of respiratory mechanics,and we mainly monitored the parameters related to the respiratory mechanics by the viewpoint of engineering to guide the clinical diagnosis and treatment.On the base of the platform of CO2 monitoring,this paper describes a new type of respiratory mechanical parameters detection system based on Bernoulli's law.The mainstream system uses pressure sensor with high precision and microprocessor with low power and realizes the collection of the patient's respiratory mechanics parameters through the digital filtering technology.We mainly collect the respiratory pressure which is close related to the airway tube.First,we simulated the airway tube using the finite element method,and second we draw the structure of airway tube.And finally we manufactured the airway tube through 3D print technology.And then we began design the circuit using the chosen elements and designed circuit.After that,we began test the platform to solve the problem of signal caused by power,which included the determination of the voltage of pressure sensor,the designation of power supply circuit.Finally,the accuracy of signal monitoring is achieved by linear compensation of the sparse linear compensation at the preheating stage.Targeted experiments were carried out using the monitoring system including calibration experiment,respiratory experiment,and so on.Through the continuous test,the mainstream system can be used to monitor the human respiratory mechanics parameters directly in the airway tube without any treatment.Several volunteers were tested,the results showed that the system can accurately measure the parameters of respiratory mechanics,with good real-time performance and longtime continuous monitoring.In addition,the system has the characteristics of miniaturization,portability and simple operation,and it is convenient for patients to monitor.Therefore,this device has a certain clinical application value.