Prasanna Ballal

Learn More
A new application architecture is designed for continuous, real-time, distributed wireless sensor networks. We develop a wireless sensor network for machinery condition-based maintenance (CBM) in small machinery spaces using commercially available products. We develop a hardware platform, networking architecture, and medium access communication protocol. We(More)
This paper uses a novel discrete-event controller (DEC) for the coordination of cooperating heterogeneous wireless sensor networks (WSNs) containing both unattended ground sensors (UGSs) and mobile sensor robots. The DEC sequences the most suitable tasks for each agent and assigns sensor resources according to the current perception of the environment. A(More)
1. Introduction Wireless sensor networks are one of the first real-world examples of pervasive computing [1, 14, 24]. Small, smart, and cheap sensing devices will eventually permeate a certain environment and, suitably coordinated, will automatically recognize the present context and accordingly readjust their behavior. Smart environments represent the next(More)
This paper presents a discrete-event controller (DEC) for the coordination of cooperating heterogeneous wireless sensors, namely unattended ground sensors and mobile robots. It describes a new method for efficient computer aided control design of a wireless sensor network. The DEC sequences the most suitable tasks for each agent according to the current(More)
This paper describes the development of a mobile sensor network test-bed at the Automation and Robotics Research Institute (University of Texas at Arlington). LabVIEW high-level programming language is used to program, control and monitor a variety of off-the-shelf hardware platforms (both sensor motes and mobile robots). The test-bed is composed of two(More)
—This paper has three contributions. First, we develop a low-cost test-bed for simulating bearing faults in a motor. In Aerospace applications, it is important that motor fault signatures are identified before a failure occurs. It is known that 40% of mechanical failures occur due to bearing faults. Bearing faults can be identified from the motor vibration(More)
Form Approved OMB No. 0704-0188 Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden(More)
Effective cooperation of robot teams in unstructured environments requires dynamic resource assignment. If the robots are also in charge of executing multiple simultaneous missions, then risks of deadlocks due to the presence of shared resources among different missions have to be tackled. This paper presents a novel approach to combine together a one(More)
The third year of the PSI project was marked with increased effort in translating research ideas to full-fledged prototype development in overlapping domains of Wireless Sensor Networks, Computer and Network Security, Pervasive Computing, Machine Learning, and Databases. We have made significant gains in mission programming and decision making logic of(More)