@techreport{oai:ipsj.ixsq.nii.ac.jp:00043450,
 author = {渡辺, 貴文 and 森戸, 貴 and 南, 正輝 and 森川, 博之 and Takafumi, WATANABE and Takashi, MORITO and Masateru, MINAMI and Hiroyuki, MORIKAWA},
 issue = {44(2007-MBL-041)},
 month = {May},
 note = {数千台単位で広範囲にセンサノードを分散配置する無線センサネットワークにおいて，電源の確保は１つの大きな課題である．既存の無線センサネットワークのノードは一次電池による駆動を前提としているが，電池交換の手間や費用などを考えると各ノードはバッテリレスで駆動されることが望ましい．そこで，当研究室では太陽電池等の発電素子をエネルギー源として用いることで，１次電池使用時よりも長期間稼働させること目標としたセンサネットワークシステムである"Solar Biscuit"(以下ＳＢと省略)の開発を進めてきた．しかしながら，太陽電池より得られる電力が微少かつ不安定なＳＢのノードでは消費電力の徹底した削減が必要となる．本稿では既存のＭＡＣプロトコルのうち最も省電力であるスケジュールベースの通信に電波時計による時刻同期を組み合わせ，ＳＢにおいてより省電カな通信を実現する方法について報告する．, One big problem in wireless sensor network is how to supply electric power to a number of sensor node. A battery is usually used for driving these sensor node. However, this is problematic in that dead battery replacement is then required for a huge number of nodes. To tackle this problem, we are researching on battery-less wireless sensor network system called "Solar Biscuit" which employs a solar cell for its energy source. Because energy obtained from energy-harvesting device tends to be unstable depending on environment change (e.g. climate change), the key challenge in designing battery-less WSN is how to ensure long-term stable operation of the network. To enable such stable operation, we believe that power consumption in multi-hop communication should be reduced drastically as the first step. From this point of view, we are trying to utilize radio-controlled clock technology to develop a practical low-power multi-hop communication scheme for battely-less WNSs. This paper introduces design of a radio-controlled clock based scheduled communication mechanism as well as its implementation and initial experimental results.},
 title = {電波時計を用いた同期型バッテリレス無線センサネットワークの設計と実装},
 year = {2007}
}