Sleep apnea syndrome detection device based on breathing airflow signal

Abstract

The invention provides a sleep apnea syndrome detection device based on a breathing airflow signal. A humidity sensor is fixed in front of a breathing mask air outlet; a data collection and wireless transmission node comprises a voltage division circuit, a first microprocessor, a buzzer and an indication lamp; the humidity sensor and a precise resistor are connected in series to form the voltage division circuit; the voltage of two ends of the precise resistor is connected with the analog-digital conversion interface of the first microprocessor; a breathing signal is sent to a receiving node through wireless communication; the receiving node is connected with the indication lamp and the buzzer and comprises a second microprocessor; and after the second processor receives data sent from thedata collection and wireless transmission node, the data is transmitted to a breathing signal processing module. According to the sleep apnea syndrome detection device, through the humidity sensor, the humidity change of the breathing airflow is detected, breathing frequency, breathing suspending starting time and end time, duration and a suspension frequency in a testing process are calculated through the breathing airflow signal, and an alarm signal is generated in time.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a sleep apnea syndrome detection device based on respiratory airflow signals. Background technique [0002] Health monitoring plays an important role. It can remind us of our physical condition in time and detect possible diseases early, which has attracted more and more attention. Sleep apnea syndrome is a respiratory disease in which patients experience apnea or hypopnea during sleep, leading to awakenings during sleep and poor sleep quality. Patients experience drowsiness, fatigue, memory loss, and even traffic accidents during the day. Some medical studies have found that it is also an independent cause of hypertension and diabetes. Apnea refers to the reduction of respiratory airflow by more than 90% from the normal value for more than 10 seconds. Hypoventilation refers to a reduction of more than 50% from the normal value, accompanied by a decrease in blood oxyge...

AI Technical Summary

Problems solved by technology

The invention patent application CN106175772A published by the State Intellectual Property Office on December 7, 2016 discloses a sleep apnea monitoring method and system. The invention uses a temperature sensor to detect the breathing signal. When exhaling and inhaling, there is a temperature difference in the nasal airflow. , the temperature sensor responds to the change of respiratory airflow by detecting the temperature, but there is a small temperature difference between exhalation and inhalation, the sensor output signal is weak, and the subsequent signal amplification circuit is required.

Images