[[alternative]]Application of Wireless Sensor Network on Real-Time Precipitation and Groundwater Monitor System

碩士電機工程學系[[abstract]]本論文主要建立一套以無線感測器網路為基礎之坡地降雨及地下水位監測系統，以即時監控危險山坡地之降雨量及地下水位，避免災害之產生。系統一開始選擇MPR410感測器銜接地下水位計，每個感測器可以透過多點跳躍傳輸將資料透過臨近感測器傳輸至入口站(Gateway)，每個感測器傳輸距離不用太遠，因此所需電力小。隨後在中繼站以嵌入式設備及整體封包無線電服務(General Packet Radio Services, GPRS)數據機進行資料之暫存與回傳至基地台，最後於基地台建立網站進行資料之即時展示。而程式撰寫時以統一塑模語言(Unified Modeling Language, UML)為基礎，進行需求分析、系統分析與設計，再建立包括連接雨量計及地下水位與塵埃版(Mote Board)連接之程式、接收站與嵌入式設備連接程式、透過整體封包無線電服務將資料傳回基地台之程式，及基地台關聯式資料庫建立與網路程式撰寫，撰寫時同步建立試驗場進行單元測試及系統整合測試，測試內容包括系統穩定度、電池耗電量及太陽能供電系統配合度，最後建立一套即時之坡地降雨及地下水位監測系統。[[abstract]]This thesis sets up a hillside monitor system of precipitation and groundwater level based on wireless sensor network (WSN) to monitor the rainfall and groundwater level of a risky hillside in real time that the disaster can be avoided. In the beginning, the MPR410 sensor is selected to connect the groundwater gauge. The sensor transports data into gateway using multi-hop topology. Owing to the short transport distance, the necessary power of sensor is small. Second, the mid-station uses the embedded system and general packet radio service (GRPS) modem to save and transport data into base station. Finally, the base station uses web to display the precipitation and groundwater level. This study uses the unified modeling language (UML) to process the requirement analysis, system analysis and design, and finishes the program connecting precipitation/groundwater gauge and mote board, the program joining gateway and embedded system, transporting program from mid-station to base station by GPRS modem, socket program receiving data, database establishment and web station program. In the same time, this study builds a test site to practice the unit test and combination test, which includes the test of the system stability, power consumption of battery and solar power supply performance. Finally, a hillside monitor system of precipitation and groundwater level is set up