富山湾における環境観測用センサネットワークの構築-II : 中継ブイを考慮した回線設計

概要

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Seasonal and regional variances of the marine environment have been measured in Toyama Bay. The purposes of these measurements are to prevent marine pollution, provide forecasts for fisheries as well as disaster. However, various sensors, such as those for measuring salinity and temperature of salt water, are required to conduct environmental observation in the coastal areas. Furthermore, practical arbitrary real-time observation is difficult because of the limitation of power supply methods that cannot cover such a wide range of observations. Therefore, by designating the buoys as the nodes, we conducted fundamental experiments on the sensor network. Upon measuring the receiving sensitivity and rate in the actual environment, that is, in Toyama Bay, we confirmed that the data relay among the buoys functions properly and useful data are acquired for designing circuits for the system.
2011-09-25