Biomedical Sensors
Articles on biomedical sensors in Biomedical and Biotechnology Engineering, starting with the main guide.
ECG Electrodes and Biopotential Measurement Basics Biopotential measurement basics: ECG, EEG and EMG signals, electrodes, skin interface, instrumentation amplifiers, CMRR, filtering, safety and a gain example. Pulse Oximeter Working Principle: How SpO2 Is Measured Pulse oximeter working principle explained: red and infrared light, the PPG signal, ratio of ratios, calibration, accuracy limits and a worked example.