462-nW 2-axis gesture sensor interface based on capacitively controlled ring oscillators

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussavertaisarvioitu

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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.

Yksityiskohdat

AlkuperäiskieliEnglanti
Otsikko2017 IEEE International Symposium on Circuits and Systems (ISCAS) Proceedings
TilaJulkaistu - 28 syyskuuta 2017
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaIEEE International Symposium on Circuits and Systems - Marriot Waterfront, Baltimore, Yhdysvallat
Kesto: 28 toukokuuta 201731 toukokuuta 2017
http://ieeexplore.ieee.org/document/8050249/

Julkaisusarja

NimiIEEE International Symposium on Circuits and Systems proceedings
ISSN (elektroninen)2379-447X

Conference

ConferenceIEEE International Symposium on Circuits and Systems
LyhennettäISCAS
MaaYhdysvallat
KaupunkiBaltimore
Ajanjakso28/05/201731/05/2017
www-osoite

ID: 15743642