Networking Recongurable Smart Sensors y

The advances in sensing devices and integrated circuit technology have allowed for the development of easily \recongurable smart sensor " products. Primarily utilizing commercial o-the-shelf (COTS) com-ponents, we have developed recongurable smart sensors, consisting of a microprocessor, GPS receiver, RF transceiver, and a sensor. The standard serial control interface allows for ease of interchangeability for upgrades in RF transmission schemes as well as customizing the sensing device (i.e. temperature, video images, IR, motion, Ethernet) per application. The result is a exible module capable of gathering sensor data, local processing, and forwarding compressed information to a central location via other modules. In this paper, we present our system infrastructure design and a cost function based geographical self-routing algorithm for networking recongurable smart sensors. The algorithm allows for the sensors to automatically negotiate in a geographical radial topology relative to a central location, utilizing other sensors as routes or hops for forwarding information to a central location. A number of these sensors are currently deployed out in the eld and we present performance measurements on routing and transmission of sensor data. Scalability issues are addressed in analysis of a very large scale recongurable smart sensor network