A CMOS image sensor with reconfigurable resolution for energy harvesting applications

Chao Shi, Man Kay Law, Amine Bermak

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

In this paper, we propose a CMOS image sensor with reconfigurable resolution for energy harvesting applications such as video sensor networks. Depending on the available energy, the spatial resolution of the imager can be adaptively reconfigured to save energy for other units on the sensor node. In contrast to early attempts of energy harvesting image sensor, we propose an asynchronous sensor in which the photodetector itself within the pixel can be used as an energy harvesting device, so that the total available energy will be increased. Low power operation is achieved since the time-to-first spike (TFS) pixel only fires once per frame. Utilizing address-event-representation, the imager can make efficient use of the output bandwidth. System architecture and operation are discussed together with the simulation results. Measurement results for a test structure fabricated in standard 0.35μm CMOS process are also provided. A system model is developed to illustrate the effectiveness of the proposed approach.

Original languageEnglish
Title of host publicationIEEE Sensors 2009 Conference - SENSORS 2009
Pages197-200
Number of pages4
DOIs
Publication statusPublished - 2009
Externally publishedYes
EventIEEE Sensors 2009 Conference - SENSORS 2009 - Christchurch, New Zealand
Duration: 25 Oct 200928 Oct 2009

Other

OtherIEEE Sensors 2009 Conference - SENSORS 2009
CountryNew Zealand
CityChristchurch
Period25/10/0928/10/09

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Shi, C., Law, M. K., & Bermak, A. (2009). A CMOS image sensor with reconfigurable resolution for energy harvesting applications. In IEEE Sensors 2009 Conference - SENSORS 2009 (pp. 197-200). [5398193] https://doi.org/10.1109/ICSENS.2009.5398193