Proceedings of the 6th ACM conference on Embedded network sensor systems
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Embedded sensor networks are transforming the computing landscape, enabling a host of new applications that are fundamentally changing the way we monitor both the natural and built environment. In this paper, we focus on the latter, with an application of embedded sensing technology to parking lot occupancy monitoring. With a focus on reliability and cost effectiveness, our solution relies on paired sets of inexpensive sonar rangefinders and an in situ vehicle detection algorithm. We present the design and implementation of this system, along with detailed experimental results from a campus parking lot study.