With the recent advances in wireless sensor network technology, wireless sensor networks (WSN) are widely deployed in many industrial and civilian applications, such as military application, energy management, health care, environment monitoring and etc. Most of these applications require the deployment of large-scale WSN.

Due to the limitation of sensor nodes, few of them could provide user interface. Thus, it is difficult to monitor the operation of the sensor nodes within a WSN. In some applications, the whole system consists of thousands of sensor nodes. How to guarantee the performance of such systems would be a great challenge. One method to avoid the problem raised in operating such large scale system is to conduct extensive testing by an experiment tool in the real envi...[ Read more ]

With the recent advances in wireless sensor network technology, wireless sensor networks (WSN) are widely deployed in many industrial and civilian applications, such as military application, energy management, health care, environment monitoring and etc. Most of these applications require the deployment of large-scale WSN.

Due to the limitation of sensor nodes, few of them could provide user interface. Thus, it is difficult to monitor the operation of the sensor nodes within a WSN. In some applications, the whole system consists of thousands of sensor nodes. How to guarantee the performance of such systems would be a great challenge. One method to avoid the problem raised in operating such large scale system is to conduct extensive testing by an experiment tool in the real environment. If the developer could obtain energy consumption of the sensor nodes and topology info of the whole sensor system, the performance of the large scale WSN system can be fully monitored.

We design a WSN monitoring system, which can be deployed out to detect the communication and sensing data in WSN. In this system, a script engine is designed to analysis the row data. And a schema is designed to ensure the monitoring info sequence under low powerful hardware system. After that, we will discuss an application of wireless sensor network, to monitor the channel boundary in a typical area. We provide an idea, which is called sensing channel assignment algorithm (SCAS). It can improve the effectiveness of wireless spectrum in WSN. Simulation results will show that the sensitivity and accuracy are quite good. Finally, we discuss a body sensor application, a 24-hour heart care and monitoring system. This system is designed for in-home and daily medical services. We conducted numerous clinic trials for it. Experimental results show that the sensitivity and accuracy are quite high.