用超宽带技术无感监测坐姿，保护隐私还准到99.11%。
UWB-PostureGuard: A Privacy-Preserving RF Sensing System for Continuous Ergonomic Sitting Posture Monitoring
- 用商用UWB设备+特征工程提取多种坐姿特征
- 99.11%准确率，抗衣物厚度、家具变化等干扰
- 无需穿戴、不拍人脸，适合长期健康监护
长时间使用电脑导致不良坐姿已成为重大公共健康问题。传统坐姿监测方案存在隐私隐患（摄像头）或佩戴不适（可穿戴设备）。本文提出UWB-PostureGuard，一种基于超宽带（UWB）的隐私保护传感系统，通过连续非接触式监测办公坐姿，推动移动健康预防管理。系统利用商用UWB设备，结合全面特征工程提取多类人体坐姿特征；设计PoseGBDT模型有效捕捉姿态的时间依赖性，克服传统逐帧分类的局限。在10名参与者和19种不同坐姿下的真实场景评估中，系统达到99.11%的准确率，并对衣物厚度、额外设备及家具配置等环境变量保持鲁棒性。该系统可在现有平台部署，提供可扩展、低成本、隐私友好的移动健康解决方案，助力主动式姿势管理，提升生活质量。
原文摘要 · Abstract (English)
Improper sitting posture during prolonged computer use has become a significant public health concern. Traditional posture monitoring solutions face substantial barriers, including privacy concerns with camera-based systems and user discomfort with wearable sensors. This paper presents UWB-PostureGuard, a privacy-preserving ultra-wideband (UWB) sensing system that advances mobile technologies for preventive health management through continuous, contactless monitoring of ergonomic sitting posture. Our system leverages commercial UWB devices, utilizing comprehensive feature engineering to extract multiple ergonomic sitting posture features. We develop PoseGBDT to effectively capture temporal dependencies in posture patterns, addressing limitations of traditional frame-wise classification approaches. Extensive real-world evaluation across 10 participants and 19 distinct postures demonstrates exceptional performance, achieving 99.11% accuracy while maintaining robustness against environmental variables such as clothing thickness, additional devices, and furniture configurations. Our system provides a scalable, privacy-preserving mobile health solution on existing platforms for proactive ergonomic management, improving quality of life at low costs.
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