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A short essay about plantations in South Greenland 南グリーンランドの植林事業について

An article published in a museum catalogue for a special exhibition on Greenland, "Greenland: An Arctic Island of Eskimo [Inuit], Hunters on Icy Waters" (Pp. 53-59), edited by the Hokkaido Museum of Northern Peoples. Abashiri, Japan (in Japanese).

[Abstract] HEMS is recognized as the one of most effective system for energy saving among the people. But this system has the problems for being influenced into the ordinary people. The problem has following three points. 1. This system is mounted on the wall of the house. Then it is so hard that people can monitor at various points. 2. Initial cost is very expensive. 3. People has less willing for saving energy at their home. Then we've tried to introduce sensor network technology into HEMS. Sensor network technology can overcome above three problems because it consists of cheep wireless sensor node and also can be used for providing safety and security and health of their daily life. But the power source of the sensor network node is provided by AC cable or chemical battery at present. It prevents the location freedom and occurs battery exchange procedure. Then we've examined to introduce the energy harvesting technology into the power source of the sensor network nodes. In this paper we've calculated the consuming power amount of the sensor network node account for various step HEMS and assuming the harvesting energy from the life environment. After that we've performed the experiment for monitoring HEMS under using only solar energy. Finally we've concluded the validity of our way for applying to more rich HEMS (Control HEMS).