Design and Implementation of Remote Monitoring System Based on 3G Mobile Networks

以3G行動通訊網路為基底之遠端監控系統設計與實現

陳昱希(Yu-Hsi Chen)

指導教授 ： 馬席彬

國立清華大學/電機資訊學院/電機工程學系/碩士(2011年)

摘要

隨著科技現代化的快速成長，遠端監控系統已被廣泛運用在工業安全、醫療照護。這個基於通訊及伺服器技術的自動化系統，主要的功能包含了數據取得、無線傳輸以及遠端控制。

本篇論文為設計並實現一個基於3G行動通訊網路的遠端監控系統，此系統由無線感測網路、3G終端設備及中控伺服器所組成，可允許無線感測網路及3G終端設備間的資料交換，並藉由TCP/IP的連結方式使終端設備與中控伺服器進行數據溝通。透過3G行動通訊網路的高傳輸速率(14.4 Mbps downlink and 5.76 Mbps uplink)及較遠的傳輸距離(5 km)，再配合伺服器上友善的圖形使用者界面，即可方便達到遠端監控的目的。除此之外，為確保資料的正確性，此系統將資料同步及數據分析的處理納入考慮。

本篇論文亦呈現出一個3G終端設備的雛型，可成功連結不同的無線感測網路，且運用於能源電力監控及遠程醫療照護。在能源電力監控系統上，我們使用了Microchip dsPIC30F微控制器及Huawei的M2M模組，作為其3G終端設備，主要功能為擷取無線感測節點上的電力資訊，並透過電信網路連結上網際網路，再傳送資訊至中控伺服器進行數據處理，此系統雛型之耗電功率約為2 W；而在遠程醫療照護系統中，以Android手機當作一個3G終端設備，而手機上的藍芽裝置會負責接收同樣為藍芽傳送而來的病人ECG訊號，再透過3G行動網路傳送資訊至中控伺服器。此外，伺服器上也設計了對應於兩種不同應用所使用的圖形使用者界面，功能包含了即時繪圖、資料備份及緊急事件呼叫…等等。此一系統雛型運行結果說明本篇所發展之遠端監控系統於實際運用之可行性。

關鍵字

遠端監控系統 ； 終端設備 ； 伺服器 ； 第3代行動通訊網路 ； 無線感測網路

並列摘要

As the rapid development of technology modernization, remote monitoring system has been widely used in industry, security and healthcare. It is an automation system based on communication technology and server technology, and its main functions include data acquisition, wireless transmission, and remote control.
This thesis presents a design and implementation of remote monitoring system by means of 3G mobile technology, and it is composed of wireless sensor networks (WSNs), a wireless terminal, and a central server. The remote monitoring system allows exchanging and gathering information between WSNs and the wireless terminal which includes a micro-controller unit (MCU) and a 3G M2M module, and the wireless terminal also communicates with the central server through TCP/IP connection. GUI is also supported in this central server, and it can display data from WSNs. For example, the real-time waveform, monitored data, and emergent event alarm will show on user's Internet devices which connect with central server. In order to ensure the accuracy of capturing data, synchronization and data analysis are considered in this system.
This remote monitoring system embraces three characters. First, an expandable wireless terminal is developed, which can connect any WSNs with compatible serial interface. Second, the wireless terminal is implemented by the MCU and the 3G M2M module, and this system is more flexible comparing with commercial 3G modem. Third, the central server is convenient to read for user by providing many functions, such as real-time charting, file backup, event alarm and so on.
The system is constructed and successfully tested for wireless sensor networks. There are two application designs according to this remote monitoring system. One is a remote power monitoring system for photovoltaic solar systems and wind generators, and another one is a remote healthcare monitoring of electrocardiogram. In the power monitoring system, the Microchip dsPIC30F MCU and Huawei EM770W M2M module are used to construct a wireless terminal, which transfers power information to the central server. The transmission range of wireless terminal is up to 5 km, and it also has the high data rate (7.2 Mbps downlink and 2 Mbps uplink). The power consumption of the wireless sensor node and the wireless terminal in active mode are about 198 mW and 2 W, respectively. In the healthcare monitoring system, the Android phone acts a wireless terminal. It can capture the ECG signal from a wireless sensor node which is wore on the patient, and transfer data to the central server. The power consumption of the wireless sensor node in active mode is about 336 mW.

並列關鍵字

Remote Monitoring System ； Terminal ； Server ； 3G Mobile Networks ； Wireless Sensor Network

參考文獻

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