title: A motion gesture sensor using photodiodes with limited field-of-view.
abstract: This paper presents a low-power and small-size motion gesture sensor (MGS) based on an active infrared (IR) proximity sensor. While conventional proximity-based MGSs require two LEDs (the most power-hungry components) and one photodiode, the proposed MGS eliminates one of LEDs at the expense of an additional photodiode as a separate channel. In conjunction with an optical block that limits the field-of-view of each photodiode, the power consumption and area of the proposed MGS can be reduced by up to 52% and 69%, respectively, compared with conventional proximity-based MGSs. Optical simulation and test results validate theoretical analysis presented.
authors.affiliation: School of Electrical and Electronics Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 156-756, Korea.
authors.forename: Yong Sin
authors.initials: YS
authors.lastname: Kim
authors.forename: Kwang-Hyun
authors.initials: KH
authors.lastname: Baek
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005868:Gestures; D006801:Humans; D009038:Motion; D010783:Photometry / Q000295:instrumentation*; D012666:Semiconductors; D014584:User-Computer Interface