BIOINSTRUMENTATION TO EVALUATE BLOOD VESSEL AND CARDIO PULMONARY FUNCTION

PURPOSE: A biometric system for evaluation of blood vessel and cardio pulmonary functions using both hands is provided to use a wrist blood pressure measurement module, thereby improving the accuracy of wrist blood pressure measurement. CONSTITUTION: A body impedance sensor unit (130) comprises a current electrode and a voltage electrode. The body impedance sensor unit detects a pulmonary volume signal. An impedance pulmonary function test (IPFT) pre-processor (160) removes noise. The IPFT pre-processor amplifies the pulmonary volume signal. An electrocardiogram and body impedance micro controller unit (MCU) (170) converts the pulmonary volume signal to a digital signal. [Reference numerals] (110) Electrocardiogram sensor unit; (120) Electrocardiogram preprocessing unit; (130) Body impedance sensor unit; (140) Body impedance preprocessing unit; (150) ICG preprocessing unit; (160) IPFT pre-processor; (170) Electrocardiogram and body impedance MCU; (210) Oxygen saturation sensor unit; (220) Oxygen saturation preprocessing unit; (230) Oxygen saturation MCU; (310) NIBP sensor unit; (320) NIBP preprocessing unit; (330) Pressure sensor unit; (340) Pressure preprocessing unit; (410) Main MCU; (420) Display unit; (430) Speaker unit; (440) Bluetooth unit