Multi-channel photoplethysmographic wave monitoring system based RISC-V

Abstract： A multi-channel real-time system is designed for monitoring photoplethysmographic (PPG) using RISC-V kernel. The system takes E203 IP of RISC-V architecture as the low-power core, which connects analog front-end module and Bluetooth control module through ICB bus. The analog front-end control module controls back-to-back LEDs to realize two-channel PPG signal acquisition. Multi-channel acquisition can be realized by reusing the analog front-end control module. The Bluetooth control module is connected to E203 to deliver system control commands, and then upload PPG data to the terminal. Finally, The FPGA system verifies the 22-bit dual-channel PPG signal Internet of Things terminal application.