A sensing range adjustment to extend lifetime of WSN

• Main Authors: I-Lun Liu, 劉伊倫
• Other Authors: 郭斯彥
• Format: Others
• Language: en_US
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/50778040054183324730

碩士 === 國立臺灣大學 === 電機工程學研究所 === 96 === Owing to the improvement and integration of wireless communication network research and microelectronics, tiny electronic devices can embed multiple functions, such as accurate sensing, computing, and communications. Recently, many researches take account of the development and future of such tiny devices, in which WSN (Wireless Sensor Network) has been noted significantly. Deploying tiny wireless sensor into the environment forms a WSN, which is in charge of monitoring and collecting information related to living environment. Because of limited power, how to make good use of its power to lengthen network lifetime is always the most important issue. In this article, we apply the density control protocol in PEAS approach, which helps network nodes distribute work uniformly so that lowers power consumption. We use the effective approach on power management of the protocol and study the characteristics of links between active sensor nodes under high-density distribution. We find the mathematical model of the sensing area, define the power dissipation of each node in every state, and try to find out the best sensing range that extends network lifetime most under the sensor network distribution.