In order to improve traditional pulse

blood oxygen measurement method

and adapt to portable requirements of equipment through study of piezoelectric thin film

select appropriate passive piezoelectric thin film sensor and invasive reflective blood oxygen module

using Cortex—M3 ARM micro processor

integrated temperature and humidity sensor

display alarm and wireless communication module

fabricate a wearable physiological data detector. Through test

average relative measuring error of instrument test data and normal standard value is within1 %

which meets requirement of measurement. Experiments show that the detector is simple

accurate

easy to carry

and has some practical guidance for clinical and personal pulse and blood oxygen detection.