Title :
A millimeter-scale wireless imaging system with continuous motion detection and energy harvesting
Author :
Gyouho Kim ; Yoonmyung Lee ; Zhiyoong Foo ; Pannuto, Pat ; Ye-sheng Kuo ; Kempke, Ben ; Ghaed, Mohammad Hassan ; Suyoung Bang ; Inhee Lee ; Yejoong Kim ; Seokhyeon Jeong ; Dutta, Pranab ; Sylvester, Dennis ; Blaauw, D.
Author_Institution :
Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
We present a 2×4×4mm3 imaging system complete with optics, wireless communication, battery, power management, solar harvesting, processor and memory. The system features a 160×160 resolution CMOS image sensor with 304nW continuous in-pixel motion detection mode. System components are fabricated in five different IC layers and die-stacked for minimal form factor. Photovoltaic (PV) cells face the opposite direction of the imager for optimal illumination and generate 456nW at 10klux to enable energy autonomous system operation.
Keywords :
CMOS image sensors; energy harvesting; image motion analysis; millimetre wave imaging; millimetre wave integrated circuits; object detection; solar cells; CMOS image sensor; IC layers; PV cells; battery; continuous in-pixel motion detection mode; continuous motion detection; energy autonomous system operation; energy harvesting; memory; millimeter-scale wireless imaging system; minimal form factor; photovoltaic cells; power 304 nW; power 456 nW; power management; processor; solar harvesting; system components; wireless communication; Battery charge measurement; Image resolution; Image sensors; Lenses; Motion detection; Radio frequency; Synchronization;
Conference_Titel :
VLSI Circuits Digest of Technical Papers, 2014 Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4799-3327-3
DOI :
10.1109/VLSIC.2014.6858425
