Design and implementation of vital signs simulator for patient monitor

This study focuses on the design and implementation of vital signs simulator for patient monitors. a patient monitor has three major monitoring systems,including pulse oximeter,electrocardiogram (ecg) and non-invasive blood pressure monitor. medical equipment should be calibrated on a frequency basis,but simulations of vital signs are some of the ways to calibrate the reading of a patient monitor. the study included a prototype that can simulate the oxygen saturation and pulse rate for pulse oximeter,ecg pulse rate and waveform (normal and arrhythmias) and systolic and diastolic pressure and pulse rate for non-invasive blood pressure monitor. arduino microcontroller served as the main processing unit of the simulator of vital signs.