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Design and Research of RFID Antennas for Coal Mine Monitoring Systems

Author: CaoLei
Tutor: ZuoShu
School: Jiangsu University
Course: Electromagnetic Field and Microwave Technology
Keywords: Personnel positioning system Radio frequency identification technology Fractal Theory Reader antenna Tag antenna
CLC: TN820
Type: Master's thesis
Year: 2010
Downloads: 312
Quote: 3
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Abstract


With the continuous development of the wireless communication, radio frequency identification technology (Radio Frequency Identification, abbreviated RFID) has been widely used, implementation of the radio frequency identification system into different variety of specific applications. As the particularity of mine operating environment, as well as mining accidents continue to occur, mine production safety and rescue personnel management and has been a plague people's major problem. Therefore, the study for the mine under the new RFID system for accurately record the number of miners underground to protect the safety of miners and guidance for the various rescue measures with friends is extremely important. This makes the system as a key component of RFID antenna design and research has become very important and urgent. In fact, RFID antenna technology development of RFID technology matures and wide application of theoretical significance and practical value. This paper briefly reviews the RFID technology-related knowledge, explain the working principle of the RFID system and research focus, and technical specifications of the antenna RFID systems and research status were analyzed and discussed. Then mine personnel positioning system as application background, according to the downhole environment and the system working characteristics of the reader antenna and tag antenna simulation, optimization, design and performance testing and other work. The main thesis work includes the following aspects: 1, noted in the propagation of electromagnetic waves in mine tunnel attenuation characteristics as well as equipment such as a proof of the requirements analysis and research to determine the 2.4GHz frequency 2 as a system for the proposed antenna miniaturization an improved Minkowski fractal structure, coaxial feed method. In the simulation and design optimization, the use of two-tier structure to improve bandwidth to meet the mine personnel positioning system for RFID antenna bandwidth requirements; 3, through the common tag antenna analysis and simulation to determine the downhole tag antenna structures. Completed the RF module and matching network circuit design. Mirrored by bending dipole and compensation structure, so that the label printed dipole antenna to achieve the miniaturization and dual-band characteristics. 4, the production of the tag and reader antennas experimental sample, and the gain of the antenna resonance characteristics of the test results show that the antenna of the indicators meet the special environmental requirements underground. 5, the simulation results between test results and error analysis. Muwen miniaturized fractal mine RFID tag antenna, compact structure, small size, performance and stability, not only in the application of the mine, and at low cost, is also suitable for applications that require high-volume label applications, such as container, no travel costs systems.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Antenna > General issues
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