Design Of Portable Physiological Signal Monitoring System For Neonate

Nowadays a lot of babies lost their lives due to respiratory disorder every yeararound the world. About6%of the newborn babies will catch irregular apnea, whichwill result in more serious consequences for newborns who cannot own resumenormal breathing, and even lost their lives in the suffocation. In addition, abnormalheartbeat rate is also a threat for babies’ life. Thus the neonatal sleep monitoring isvery necessary. Compared with the traditional invasive neonatal monitoring system,the domestic portable neonatal monitoring system is more comfortable. As belongsto the electronic products, it is less expensive and easy to operate.This paper analyzes the domestic and overseas neonatal physiological signalmonitoring system research situation. Realized MCU based portable neonatalrespiratory monitoring system design, introduced the sensor, amplification filtercircuit structure and peripheral device driver, etc. The hardware system reliability isverified through the comparison with the polysomnography of real-time breathing,heartbeat and breathing suffocate monitoring waveform; Completed Empirical ModeDecomposition (EMD) based human physiological signal monitoring algorithmsoftware realization, introduced the principle of the algorithm and the basic steps.Built the algorithm validation platform and analyzed the algorithm calculationresults of respiration rate and heartbeat rate under the condition of normal sleep andsleep with body movement. Realized the DSP based portable neonatal physiologicalsignal monitoring system design, introduced the DSP platform hardware andsoftware environment and the general development flow of CCS3.3. Realized thedriver of AD conversion and USB reading and writing. Based on the calculationpoints number regulation of the EMD based algorithm, sample rate regulation andfloat point to fixed point method, reduced the algorithm operation time on the DSPbased portable neonatal physiological signal monitoring system, thus completed thealgorithm application on the system.This research has certain practical significance on physiological signalmonitoring. The two portable monitoring systems are suitable for long-term use offamily care.