Design of a respiratory signal monitoring system based on temperature sensing
TONG Shichao
LUO Erping
TANG Chi
ZHAI Mingming
Abstract：Objective To develop a simple respiratory signal acquisition and processing device based on single chip processor.Methods STC80C52 single chip processor was used as the main control chip,the thermistor series potentiometer was used as the sensing unit to sense the nasal respiratory airflow and temperature,PCF8591T was used as analog to digital converter conversion chip,C language was used for programming to realize the real-time acquisition,processing and screen display of respiratory signals,and alarm was given when the number of breaths was different from the set threshold.Results The system could detect the respiratory frequency and complete the alarm action of exceeding the threshold.Conclusion The single chip processor with thermistor sensor is used to collect respiratory signal and detect respiratory frequency,which is simple,fast and economical.
Keywords：single chip processorrespiratory frequencythermistorsignal processing
Publication Date：2025-10-31
Online Publishing Date：2026-08-26(First online date of this platform, not the publication date of the document)
Pages：7( 1346-1352 )