- 學位論文
無線感測器網路於焚風即時監測之應用
A Wireless Sensor Network Application for Real-Time Foehn Monitoring
摘要
因地形因素，焚風是臺灣常見之氣候現象之一。由於焚風之熱與乾燥特性，常造成植物枯死，嚴重時甚至引起森林大火，所造成之災害已列為國內農業天然災害救助辦法救助事故之項目。惟至目前為止，對於焚風之發生仍無監測系統之建置，得以即時通知農民，並啟動必要之減災機制。本研究利用無線感測網路（Wireless Sensor Network, WSN）技術建置即時焚風偵測系統。由於無線感測網路具有低成本、無需人力監控及傳輸距離可達80公尺以上等優勢，將其應用於環境監測確有其可行性。所建置之系統，於焚風發生時，由無線感測器將監測點測得空氣中之溫度、溼度等資料回傳至閘道器（Gateway），再利用全球行動通訊系統（Global System for Mobile Communications, GSM），將環境資料傳送至後端主機或農民手機。 本研究所建置的即時焚風偵測系統，後端搭配有資料庫以記載資料，使用者可隨時查看果園當地溫、濕度情形。焚風發生時，該監測模組偵測到焚風發生訊息時，可自動啟動灑水裝置，以減少農作物損失，同時也傳送簡訊通知相關管理人員。期望透過本系統可達到水資源有效利用與節省人力支出，達成農業自動化之目標。
並列摘要
Foehn is one of the common climate phenomena in Taiwan because of geographical factors. The foehn is associated with high temperature and low humidity, which often leads to plant death and even causes serious forest fires. The natural disaster relief fund in Taiwan has covered the loss caused by the foehn. However, no monitoring system has been developed for the foehn, so farmers are not able to immediately obtain foehn-related information and activate necessary schemes for disaster reduction. The research aims at foehn detection and uses the wireless sensor network technology to build a real-time system to monitor foehn. Since the characteristics of wireless sensor networks are low costs, unmanned control, and transmission distance up to 80 meters, it is feasible to apply the networks to environmental monitoring. When foehn occurs, the wireless communication devices in the proposed monitoring system transmit the temperature and humidity information collected by monitoring stations to the gateway, and sprinkler module action immediately for cooling and increasing humidity to protect the plants from pericarp damage or fruit drop phenomenon caused by foehn.