A 100 mu W 128 x 64 Pixels Contrast-Based Asynchronous Binary Vision Sensor for Sensor Networks Applications

作者：Gottardi Massimo^*; Massari Nicola; Jawed Syed Arsalan

来源：IEEE Journal of Solid-State Circuits, 2009, 44(5): 1582-1592.

DOI：10.1109/JSSC.2009.2017000

• CMOS vision sensors
• energy autonomous low-power sensors
• low-power
• visual processing
• wireless sensor networks

An ultra-low power 128 x 64 pixels vision sensor is here presented, featuring pixel-level spatial contrast extraction and binarization. The asynchronous readout only dispatches the addresses of the asserted pixels in bursts of 80 MB/s, significantly reducing the amount of data at the output. The pixel-embedded binary frame buffer allows the sensor to directly process visual information, such as motion and background subtraction, which are the most useful filters in machine vision applications. The presented sensor consumes less than 100 mu W at 50 fps with 25% of pixel activity. Power consumption can be further reduced down to about 30 mu W by operating the sensor in Idle-Mode, thus minimizing the sensor activity at the ouput.

• 出版日期2009-5