Field Data Transmission Using Multi-mode Wireless Communication Technology

• Main Authors: ching-hui Lee, 李清輝
• Other Authors: Jhin-Fang Huang
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/75181339965080180698

碩士 === 國立臺灣科技大學 === 電子工程系 === 97 === The researchers must consider the cost of labor power and use wireless communication technique to break the limitation of geography in field surveillance. But the environments of communication in fields are fragile and usually with alteration by natural disaster even terrorist attack. The system must have abilities to transfer the previous communication system and to choose new appropriate communication system. Let people still remote the system and make a right choice without taking any risks. The motivation of our research is developing a reliable multi-mode transmission device to self-reconstruct the stable and appropriate communication sub-system after the alteration of the communication environments. The communication sub-system of ours includes Iridium satellite communication system with high cost and high efficiency, wireless-based communication system as microwave, and the most popular and most convenient communication system, GPRS and 3G. We implement the multi-mode transmission system with water level surveillance system. We also make a decision of the sub-mode operation order, and then design the algorithm to detect the alteration of the communication environments according to the operation order, which is microwave, 3G, GPRS, and Iridium. In the result of testing in ocean, the system indeed keep transmitting water level data and video images after the alteration. We can provide advanced system or single device to present field researches or future ones after the high level integration. In the future, field research or surveillance system will have high robustness of communication abilities, and also have flexibility with alternative communication sub-system