Navime: Indoor Navigation System For The Blind Amber Imam Wai Yong Low Rashmi Sanbhadti Sudeep Yegnashankaran

System Architecture

Test effect of time of day on wifi signal strength (reliability) Keep location constant, vary time of day Test range of the gumstix bluetooth antenna (reliability) Keep location and amount of foil constant, vary time of day Keep time of day and location constant, vary amount of foil Test accuracy of identified location (functionality) Static: keep time of day constant, vary location Moving: keep time of day and path constant, vary speed Test Cases

Average and variance of wireless router signal strength (dB) Multiple fingerprints per location Effect of time of day on signal strength Range of the gumstix bluetooth antenna (meters) Effect of amount of foil covering antenna on range Effect of time of day on range Accuracy of identified location (number of correct trials/total trials) StaticMoving Metrics

Initial Results

Map - with fingerprint locations

Questions??????