Vikram Iyer

ECG Necklace: Low-power Wireless Necklace for Continuous ECG monitoring

Continuous, everyday ECG monitoring is essential for detecting transient heart conditions and enabling early intervention in cardiovascular diseases. However, current technologies, such as ECG Holter monitors and smartwatches, face challenges in balancing continuous monitoring with long-term wearability due to trade-o…

Incorporating Sustainability in Electronics Design: Obstacles and Opportunities

Life cycle assessment (LCA) is a methodology for holistically measuring the environmental impact of a product from initial manufacturing to end-of-life disposal. However, the extent to which LCA informs the design of computing devices remains unclear. To understand how this information is collected and applied, we int…

PPG Earring: Wireless Smart Earring for Heart Health Monitoring

Heart rate is a key vital sign for cardiovascular health and fitness. However, the photoplethysmography (PPG) sensors that monitor heart rate in wearables struggle with accuracy during motion. Our day-long in-the-wild study shows Fitbit measures valid heart rates only 54.88% of the time. To address this, we developed…

From Classification to Clinical Insights: Towards Analyzing and Reasoning About Mobile and Behavioral Health Data With Large Language Models

Englhardt 等人提出基于大语言模型的移动健康数据分析框架，实现从数据分类到临床洞察的推理转换。

Thermal Earring: Low-power Wireless Earring for Longitudinal Earlobe Temperature Sensing

Xue 等人设计 Thermal Earring 智能耳饰，采用低功耗蓝牙实现长时间连续耳垂温度监测，为健康追踪提供可穿戴解决方案。

DeltaLCA: Comparative Life-Cycle Assessment for Electronics Design

WatchLink: Enhancing Smartwatches with Sensor Add-Ons via ECG Interface

We introduce a low-power communication method that lets smartwatches leverage existing electrocardiogram (ECG) hardware as a data communication interface. Our unique approach enables the connection of external, inexpensive, and low-power "add-on" sensors to the smartwatch, expanding its functionalities. These sensors…

LabelAId: Just-in-time AI Interventions for Improving Human Labeling Quality and Domain Knowledge in Crowdsourcing Systems

Crowdsourcing platforms have transformed distributed problem-solving, yet quality control remains a persistent challenge. Traditional quality control measures, such as prescreening workers and refining instructions, often focus solely on optimizing economic output. This paper explores just-in-time AI interventions to…

Wireless Analytics for 3D Printed Objects

We present the first wireless physical analytics system for 3D printed objects using commonly available conductive plastic filaments. Our design can enable various data capture and wireless physical analytics capabilities for 3D printed objects, without the need for electronics. To achieve this goal, we make three k…