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Polish README presentation and trust signals #1

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Polish README presentation and trust signals #1

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9 changes: 9 additions & 0 deletions README.md
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Expand Up @@ -7,11 +7,20 @@
![minSdk](https://img.shields.io/badge/minSdk-19-blue)
![targetSdk](https://img.shields.io/badge/targetSdk-28-blue)
![Transport](https://img.shields.io/badge/transport-Wi--Fi%20TCP%20Socket-orange)
![Project](https://img.shields.io/badge/type-undergraduate%20capstone-6B7280)
![Waveform](https://img.shields.io/badge/waveform-native%20Canvas-5C6BC0)
![Scope](https://img.shields.io/badge/scope-Android%20client%20only-64748B)

本仓库为本科毕业设计 **《基于 STM32F405VGT6 的无线血氧双波长监测系统的设计与实现》** 的 Android 端源码。下位机（STM32 + 光电采集前端）通过 ESP8266 Wi-Fi 模块将采集到的两波长光电容积脉搏波（PPG）信号无线发送至手机，App 在屏幕上以四路实时滚动波形展示 **660 nm / 940 nm 的直流分量（DC）与交流分量（AC）**，用于血氧饱和度（SpO₂）相关信号的观测与算法验证。

> 本仓库只包含 Android 上位机源码，不含 STM32 固件与硬件原理图。

> [!IMPORTANT]
> **研究用途边界：** 当前版本用于四路 PPG 波形的接收与观测，不包含 SpO₂ / 心率数值计算，也不得用于临床诊断或健康决策。

> [!NOTE]
> **跨平台配套：** 本项目由 [Nathaniel Guo](https://github.com/Nathanielguo) 维护；同一硬件协议的原生 SwiftUI 实现见 [SpO2-Wireless-iOS](https://github.com/Nathanielguo/SpO2-Wireless-iOS)，便于对照两端的定长帧读取、连接生命周期与实时绘制方案。

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## 目录
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