Video Sensor Node for Low-Power Ad-hoc Wireless Networks

Author

Chi, Yu M. ; Etienne-Cummings, Ralph ; Cauwenberghs, Gert ; Carpenter, Paul ; Colling, Kent

Author_Institution

Johns Hopkins Univ., Baltimore

fYear

2007

fDate

14-16 March 2007

Firstpage

244

Lastpage

247

Abstract

A video sensor platform consisting of a smart image sensor with focal plane motion processing is presented. The camera node is intended for ultra-low bandwidth ad-hoc wireless networks with data rates of less than 2kB/sec. To meet the targets of low power consumption and low complexity, the CMOS image sensor (consuming 4.2 mW of power at 30 fps) autonomously monitors for scene changes, outputting full image data only when relevant. For this sensor node, several different operating configurations leveraging the analog processing and storage capability of the imager, including a full motion DCT based video compression algorithm are shown. The entire sensor module can operate from 3 AA batteries and consumes 225 mW at full operation.

Keywords

CMOS image sensors; ad hoc networks; discrete cosine transforms; image motion analysis; intelligent sensors; video coding; CMOS image sensor; DCT; analog processing; focal plane motion processing; power consumption; smart image sensor; storage capability; ultralow bandwidth ad-hoc wireless networks; video compression algorithm; video sensor node; Bandwidth; CMOS image sensors; Cameras; Discrete cosine transforms; Energy consumption; Image sensors; Image storage; Intelligent sensors; Layout; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Sciences and Systems, 2007. CISS '07. 41st Annual Conference on

Conference_Location

Baltimore, MD

Print_ISBN

1-4244-1063-3

Electronic_ISBN

1-4244-1037-1

Type

conf

DOI

10.1109/CISS.2007.4298307

Filename

4298307