CMOS image sensors for sensor networks

Authors:
Eugenio Culurciello;Andreas G. Andreou
Affiliations:
Department of Electrical Engineering, Yale University, New Haven, USA 06520;Department of Electrical Computer Engineering, Johns Hopkins University, Baltimore, USA 21218
Venue:
Analog Integrated Circuits and Signal Processing
Year:
2006

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Abstract

We report on two generations of CMOS image sensors with digital output fabricated in a 0.6 驴m CMOS process. The imagers embed an ALOHA MAC interface for unfettered self-timed pixel read-out targeted to energy-aware sensor network applications. Collision on the output is monitored using contention detector circuits. The image sensors present very high dynamic range and ultra-low power operation. This characteristics allow the sensor to operate in different lighting conditions and for years on the sensor network node power budget.