Design of a WSNView System for Wireless Sensor Network Management

• Main Authors: Mei-Yu Lee, 李美玉
• Other Authors: Jiann-Liang Chen
• Format: Others
• Language: en_US
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/91760123522760525205

碩士 === 國立東華大學 === 資訊工程學系 === 94 === Recent advances in microelectronic mechanical systems, digital electronics, and wireless communications have enabled the development of low-cost, low-power, multifunctional sensor devices. These devices can operate autonomously to gather, process, and communicate information about their environments. The convergence of these techniques has led to the emergence of wireless sensor networks (WSNs). Many possible applications with wireless sensor network have been investigated in different fields, such as scientific, medical, commercial, and military domains, to perform sensing and monitoring of the physical world. Wireless sensor network consists of numerous small sensor nodes, which communicate to each other wirelessly. These sensor nodes usually send their data to a specific sink node or monitoring station for collection. However, the dense deployment of sensor nodes would produce a large amount of data as a result of the numerous sensor nodes; it will be very difficult to manage the whole wireless sensor network than conventional wireless networks. Besides, battery power of sensor nodes is limited, and not replaceable or rechargeable. Many constraints, like computational capacities, memory, are also limited owing to the power constraint. Therefore, the energy management is most important to design a wireless sensor network. Recently, the cost of sensor device is getting cheaper, but failure rate of sensor device is still high. Providing functionality of fault tolerant machine and how to prolong the life of sensor network in wireless sensor network management becomes a crucial research issue. In convention network, the Simple Network Management Protocol (SNMP) is the standardized tool used widely for network management. SNMP is favored and strongly supported from the vendor community and is successfully used for the management of wired and wireless networks. The SNMP is an application layer protocol that facilitates the exchange of management information between network devices. It is portion of the Transmission Control Protocol/Internet Protocol (TCP/IP) protocol suite. SNMP enables network administrators to manage network performance, detect and solve network problems. Moreover, SNMP provides a Management Information Base (MIB) which is a collection of management information of a device that is organized hierarchically. MIBs are comprised of managed objects and are identified by object identifiers. The SNMP protocol used it to monitor the condition of managed devices and abnormal transmission in network like network attack and trigger an alarm message to manager. Comparing with Ad hoc Network environment, sensor network having many different specialties from the Ad hoc is much more complex. A suitable network management system is important and necessary to regulate complicated environments. We propose the SNMP-Based sensor network management mechanism to provide the sensor network management personnel more convenient, effective way monitoring network operation situation of sensor network. Sensor node has the ability of detecting the environment and processing information, and it delivers the acquisition of information to sink or base station by the wireless transmission way. We take advantage of its unique feature and conception of SNMP to design WSNView. The WSNView is able automatically to search for any node in the network and to demonstrate them on the GUI showing its connection relations among other nodes. Further, it provides capability for performing the monitoring, collection and analysis of network. Adjustment of network operation can be made basing on the measured data. When the network has the abnormal phenomenon, it can the automatic police show the superintendent, provides the possible occurrence reason and the solution. We achieve the network management of configuration and performance according to the collected information. For example, various sensor nodes measure the energy consumption of operation and send back to the base station, and the management system rearrange the duty of senor nodes to prevent the nodes from death quickly. Moreover, detecting the abnormal phenomenon of energy consumption could be helpful to avert from the network attack. This tool can reduce the work load which rapidly increases with the amount of nodes and promote work efficiency.