Abstract：In order to make a correct evaluation of the physiological functions to a coronary artery lesion,a new wireless real-time FFR measurement system based on an Android system is introduced,according to the actual sensor characteristics. The system structure and the design method of hardware and software are described. Using TI's PGA309 dynamic conditioning for the pressure wire's signal,and using ADS1115 to collect the data and then transmitted to STC15F2K60S2 MCU through IIC,the MCU communicates with hosts on the data processing,storage and real-ime display by Bluetooth. Experimental results show that the system is stable,reliable,and able to meet certain precision measurement requirements. Therefore,the system can be effectively applied to the clinical measurement of fractional flow reserve.

Keyword：Android system;fractional flow reserve;pressure wire;PGA309;