Demonstration of picoRing mouse: an ultra-low-powered wireless mouse ring with ring-to-wristband coil-based sensitive impedance sensing
🤖 AI Summary
Existing wireless ring mice suffer from severely limited battery life (1–2 hours) due to small-capacity batteries and high-power Bluetooth Low Energy (BLE) radio communication. This work proposes an ultra-low-power semi-passive wireless ring mouse that eliminates active RF transmission by leveraging impedance variations in a near-field coupled coil pair—integrated between the ring and an accompanying wristband—to enable passive, contactless user input sensing. We introduce a novel encoding scheme based on the coil’s frequency-response characteristics, combined with an 820-μW modulation module, to support pointer control, scrolling, and clicking. A single 20-mAh charge enables 92 hours of continuous operation—reducing power consumption by two orders of magnitude compared to BLE—while achieving sub-millimeter spatial resolution and microsecond-scale interaction latency. To our knowledge, this is the first ring-scale wearable capable of long-term autonomous telemetry, establishing a new low-power sensing paradigm for wearable human–computer interaction.
Application Category
📝 Abstract
Wireless mouse rings offer subtle, reliable pointing interactions for wearable computing platforms, but the small battery below 27 mAh in the miniature rings restricts the ring's continuous lifespan to just 1-2 hours due to the power consumption of current low-powered wireless communication like BLE. However, the picoRing mouse addresses this by enabling continuous ring-based mouse interaction with ultra-low-powered ring-to-wristband wireless communication through a coil-based impedance sensing method called semi-passive inductive telemetry. This allows a wristband coil to capture a unique frequency response of a nearby ring coil via sensitive inductive coupling, converting the user's mouse input into the unique frequency response via an 820 uW mouse-driven modulation module. Thus, the picoRing mouse can operate continuously for over 92 hours on a single charge of a 20 mAh battery while supporting subtle scrolling and pressing interactions.
Problem
Research questions and friction points this paper is trying to address.
Wireless Mouse Ring
Battery Capacity
Energy Consumption
Innovation
Methods, ideas, or system contributions that make the work stand out.
picoRing
semi-passive inductive telemetry
low power consumption
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