NYU FloodSense street sign mounted distance sensor

<p>Ultrasonic distance data in mm from a sensor mounted on a street sign post at the corner of 5th Street and Hoyt, Brooklyn, NY (40.676640, -73.994595). The sensor is designed to detect flood water that fills the street and blocks vehicle and pedestrian&nbsp;traffic, as well as depositing micro-organisms on the street.</p> <p>The sensor transmits its data via LoRaWAN and is equipped with a solar panel for continuous operation.</p> <p>Data is collected at ~5min intervals. Time fields are in local time (New York).</p> <p>Two types of erroneous data has been observed:</p> <ul> <li>Large spikes in distance that always manifest at 5000mm - can be excluded</li> <li>There are ~1% rises in distance measures on days with sun which suggests that the&nbsp;distance sensor is affected by direct sunlight</li> </ul> <p>This data is prelimary and is for prototyping purposes. Not to be used as a reliable data source as it is.</p> <p>This dataset will be updated when more data is collected.</p> <p>Please see our github org for sensor information and build instructions:&nbsp;<a href="https://github.com/floodsense">github.com/floodsense</a></p>