Human Pulse Monitoring System Based on STM32

A human pulse monitoring system is proposed based on STM32 processor. The signal of the HK-2000B pulse sensor is amplified by the signal conditioning circuit, and it is acquired by 12-bit A/D after using the 50Hz notch filter and band-pass filter. To suppress further noise, interference and baseline wanders digital median and moving average filtering are used. LCD screen displays waveform and pulse rate. When the pulse frequency exceeds the limit range, the buzzer will alarm. And communication with the host computer, in the LabVIEW platform it can further process and manage data acquired. Experimental results show the valid of the system.