Taek Kwon, Professor, UMD-Electrical & Computer Eng
This project continues research begun in fiscal year 2006-07 under the same project title, with the overall research goal of developing a practical method for detailed monitoring of traffic movements using a mesh network of wireless sensor nodes. The motivation for this approach is that low-power wireless nodes naturally form cell coverage areas that can be easily configured as a mesh network and used to detect the motion of vehicles in the coverage area. In the first year, anisotropic magnetoresistive (AMR) sensor nodes were designed and integrated with commercially available 802.15.4 chip sets to form the basic wireless node. Basic node-to-node protocols were then developed and implemented. The objective of the second year of the study is to complete the development of the rest of the required protocols and software for the mesh network so that the network functions as a working prototype. The performance of the prototype will then be evaluated for tracking vehicle movements in an intersection. The main protocols required include a congestion control protocol and a set of network and sensor management protocols. Upon completion of the protocol implementation, a vehicle-tracking algorithm based on the aggregated sensor data will be developed. The completed system will be installed in a live intersection to evaluate the performance of the network and to learn about the field installation and operational issues.