Abstract
This paper presents a 2-axis gesture sensor interface that consumes 462 nW powered by a 0.8 V supply. The system consists of two proximity sensor (PS) interfaces that provide digital data outputs. A single PS interface consists of a capacitively controlled ring oscillator (CCRO) whose frequency is sensitive to the capacitance between two copper plates in a coplanar deployment and additional capacitive load introduced by the presence of a hand. The CCRO in each interface is followed by a modified cascaded integrator comb (CIC) filter that performs the frequency-to-digital conversion, filtering and downsampling. When a total of three sensor plates are arranged in parallel, the middle one acting as a shared ground plate, the location of a user's hand can be obtained in two dimensions. Measurement results show that hand sweep gestures at 6-cm distance from the sensing plates can be detected by a lightweight algorithm.
Original language | English |
---|---|
Title of host publication | 2017 IEEE International Symposium on Circuits and Systems (ISCAS) Proceedings |
Publisher | IEEE |
Number of pages | 4 |
ISBN (Electronic) | 978-1-4673-6853-7 |
DOIs | |
Publication status | Published - 28 Sept 2017 |
MoE publication type | A4 Conference publication |
Event | IEEE International Symposium on Circuits and Systems - Marriot Waterfront, Baltimore, United States Duration: 28 May 2017 → 31 May 2017 http://ieeexplore.ieee.org/document/8050249/ |
Publication series
Name | IEEE International Symposium on Circuits and Systems proceedings |
---|---|
ISSN (Electronic) | 2379-447X |
Conference
Conference | IEEE International Symposium on Circuits and Systems |
---|---|
Abbreviated title | ISCAS |
Country/Territory | United States |
City | Baltimore |
Period | 28/05/2017 → 31/05/2017 |
Internet address |
Fingerprint
Dive into the research topics of '462-nW 2-axis gesture sensor interface based on capacitively controlled ring oscillators'. Together they form a unique fingerprint.Equipment
-
Aalto Electronics-ICT
Ryynänen, J. (Manager)
Department of Electronics and NanoengineeringFacility/equipment: Facility