Non-contact Vital Signs Monitor Software Design

Contactless life signs montior is a instrument that detect the heart and breathing rate of human body in contactless conditions. It can bi used for clinical patient care units, as well as real-time monitoring of the baby at home. It cha avoid man-made discontinuety of care,also canreduce the error rate.Based on the non-contact vital signs monitor work principle,that is,through the processing of received echo, to get your heart and breathing information,and then do the design of the hardware. In the paper we use the double antennas to receive and dispatch the signal,it avoid the influence of duples conversion to the real-time. After the signal conditioning circuit we get preliminary signals,and then wo do a list of pretreatment of relevant and filter to remove useless noise and extract useful signal,as we get the useful signal we separat the overlap signals of heartand breathing,after the separation we can do other things. We sent the separated signal into A/D to sample,and process the sampled signal with DSP. Finally DSP will sent the processed signals to the man-machine interface and display on the machine.The system has a small size,high resolution,its transmin power is small,its detection range conforming to the practical requirements.etc. so it has a good application prospect and use value in medical and nursing at home.