One Ring to Rule Them All: An Open Source Smartring Platform for Finger Motion Analytics and Healthcare Applications
One Ring to Rule Them All: An Open Source Smartring Platform for Finger Motion Analytics and Healthcare Applications
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DOI：
10.1145/3576842.3582382
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发表时间：
2023-05
期刊：
影响因子：
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通讯作者：
Hao Zhou;Taiting Lu;Yilin Liu;Shijia Zhang;Runze Liu;Mahanth K. Gowda
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作者：
Hao Zhou;Taiting Lu;Yilin Liu;Shijia Zhang;Runze Liu;Mahanth K. Gowda
本文介绍了OmniRing，一个带有IMU和PPG传感器的开源智能平台，用于活动跟踪和健康分析应用。由于穿戴舒适，智能平台正在崛起，预计市场规模很快将达到9200万美元。然而，大多数现有的平台要么是商业化的，要么是专有的，没有软硬件的细节，要么是使用了次优的PCB设计，导致体积庞大，不方便在日常生活中佩戴。为了弥补这一差距，OmniRing提出了一种可扩展的智能手表设计，它具有微型外形、更长的电池寿命、无线通信和防水功能，因此用户可以随时佩戴。为此，OmniRing利用SoC中的机会，并将传感单元与微控制器和BLE模块精心集成。电子元件集成在柔性PCB的两侧，该PCB弯曲成环形，并封装在柔性防水外壳中，以使皮肤光滑接触。总成本不到25美元，重量为2.5克，电池续航时间长达一周。广泛的可用性调查验证了舒适度。为了验证传感能力，我们启用了一个3D手指运动跟踪应用程序。通过从公共视频中提取合成训练数据，再加上数据增强，以最大限度地减少新平台生成训练数据的开销，OmniRing设计了一个基于变压器的模型，该模型利用手指和时间之间的相关性来跟踪3D手指运动，精度为6.57mm。我们还验证了OmniRing的PPG数据用于心率监测的有效性。我们相信，该平台可以在健身追踪、虚拟世界、体育和医疗保健等领域实现令人兴奋的应用。
This paper presents OmniRing, an open-source smartring platform with IMU and PPG sensors for activity tracking and health analytics applications. Smartring platforms are on the rise because of comfortable wearing, with the market size expected to reach $92 million soon. Nevertheless, most existing platforms are either commercial and proprietary without details of software/hardware or use suboptimal PCB design resulting in bulky form factors, inconvenient for wearing in daily life. Towards bridging the gap, OmniRing presents an extensible design of a smartring with a miniature form factor, longer battery life, wireless communication, and water resistance so that users can wear it all the time. Towards this end, OmniRing exploits opportunities in SoC, and carefully integrates the sensing units with a microcontroller and BLE modules. The electronic components are integrated on both sides of a flexible PCB that is bent in the shape of a ring and enclosed in a flexible and waterproof case for smooth skin contact. The overall cost is under $25, with weight of 2.5g, and up to a week of battery life. Extensive usability surveys validate the comfort levels. To validate the sensing capabilities, we enable an application in 3D finger motion tracking. By extracting synthetic training data from public videos coupled with data augmentation to minimize the overhead of training data generation for a new platform, OmniRing designs a transformer-based model that exploits correlations across fingers and time to track 3D finger motion with an accuracy of 6.57mm. We also validate the use of PPG data from OmniRing for heart rate monitoring. We believe the platform can enable exciting applications in fitness tracking, metaverse, sports, and healthcare.