車両状態監視向け車両間ネットワークの構成手法

摘要

The wireless sensor network has been applied to the condition monitoring of various railway facilities in recent years. In this paper, we focus on the wireless sensor network for train condition monitoring. To aggregate the measurement data from the sensor installed on each vehicle, it is required that the network is formed among vehicles and the sensor data is transmitted to the aggregation device via an appropriate route. However, there is an issue of the change in the network due to the coupling or decoupling. For this issue, we propose a network system consisting of an inner vehicle network and an outer vehicle network, and also develop a method of forming the outer vehicle network. In this paper, we report the test result from a prototype system and the simulation result of our proposed method.%鉄道では，構造物などの設備や鉄道車両の機器といった対象物ごとに周期を定めて点検を行う時間基準保全が主流である。このような点検や検査を実施する上で，さらにセンサー技術を用いて，設備の劣化や損傷などの経時変化をより定量的かつ高頻度に把握することができれば，危険事象の早期検知や費用対効果の高い保全計画に基づく状態監視保全が実現しやすくなることが期待される。