Fast Camera: Process Data on the Fly University of Washington Presented by: Mike Grow & Jared Tritz

Saliva Analysis

Microscope arrangement: Before detection CMOS IMAGER DSP After detection CMOS IMAGER DSP

CMOS versus CCD CMOS sensors, traditionally, are more susceptible to noise. Because each pixel on a CMOS sensor has several transistors located next to it, the light sensitivity of a CMOS chip tends to be lower. Many of the photons hitting the chip hit the transistors instead of the photodiode. CMOS chips can be fabricated on just about any standard silicon production line, so they tend to be extremely inexpensive compared to CCD sensors. CCD sensors create high-quality, low-noise images. CCDs use a process that consumes lots of power. CCDs consume as much as 100 times more power than an equivalent CMOS sensor. CCD sensors have been mass produced for a longer period of time, so they are more mature. They tend to have higher quality and more pixels. http://electronics.howstuffworks.com/question362.htm

Rough Hardware Overview Circuit board CMOS imager, prism, and optics Image acquisition DSP Noise removal Portable device Data analysis ? SDRAM USB 2.0 Firewire Ethernet Other

Specifications Hard specs Soft specs Monochromatic imager Unit production parts cost < $100 Power < 1 watt Soft specs 100 x 100 to 500 x 500 pixel resolution 100 to 600 frames/s Development cost < $10000 ~ 30 MOPS (CPU core) 128 x 101, 580 fps 256 Kbytes on-chip addressable memory

Software Tasks DSP DSP or portable device Portable device Averaging or binning for noise removal Push output data to portable device DSP or portable device Post processing Portable device Presentation of data in a graphical format

Timeline Overview Week Tasks 2 Specifications, research, preparation 3 Design 4 Finish design, start development 5 Development 6 7 System integration 8 Testing 9 Testing, project presentation 10 Finish testing, report/documentation, demo

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