摘要： 针对光电容积脉搏波（Photoplethysmographic，PPG），基于RISC-V内核设计了一款多通道、实时PPG监测系统。该系统使用RISC-V架构的E203 IP作为低功耗内核，通过ICB总线挂接模拟前端和蓝牙控制模块。AFE4400模拟前端控制模块控制背靠背LED实现两路PPG信号采集，复用该模块分时处理来实现多路采集。蓝牙控制模块挂接到E203实现了通过蓝牙外设下达系统控制指令，之后上传PPG波至终端。该系统通过FPGA验证了22位双通道PPG信号物联网终端应用。

中图分类号：TP274+.2 文献标志码：A DOI: 10.16157/j.issn.0258-7998.223456
中文引用格式： 岳文韬，张政，高博，等. 基于RISC-V的多路光电容积脉搏波监测系统[J]. 电子技术应用，2023，49(3)：37-41.
英文引用格式： Yue Wentao，Zhang Zheng，Gao Bo，et al. Multi-channel photoplethysmographic wave monitoring system based RISC-V[J]. Application of Electronic Technique，2023，49(3)：37-41.

Multi-channel photoplethysmographic wave monitoring system based RISC-V

Abstract： 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.

Key words : photoplethysmographic；RISC-V；SPI；HDL modeling；Bluetooth