Calibration of EOG and ECG instrumentation modules in smart biofeedback system

Smart biofeedback systems are consisted of various instrumentation modules intended for measurement of the appropriate physiological signals. This paper emphasizes the problem of EOG and ECG signals measurement in smart biofeedback system. More precisely, it describes the problem of calibration of EOG and ECG instrumentation modules. Calibration modules for testing the metrological characteristics of EOG and ECG instrumentation modules are presented. The calibration modules are designed according to recommendations of the International Organization for Legal Metrology (OIML Organization Internationale de Métrologie Légale) and stochastic measurement approach. This description includes the design of electronic circuits, of the appropriate printed circuit boards and of the modules interface.