Dissertation > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications > Cellular mobile communications systems (mobile phones, mobile phone handsets ) > Time Division Multiple Access (TDMA) mobile communications

The Wireless Monitoring Adapter Based on TDMA Adaptive Frequency Hopping

Author LiYuanPing
Tutor ChenLiJia
School Harbin Institute of Technology
Course Communication and Information System
Keywords TDMA air interface protocol Adaptive Frequency Hopping Synchronous Embedded Systems
CLC TN929.532
Type Master's thesis
Year 2008
Downloads 35
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Attractive in industrial control applications with the development of wireless network technology , wireless communication is growing , while most of the current CNC machine shop equipment interconnect wired network demand continues to increase , the CNC machine tools in the workshop the line will be more complex , If you are still using a wired connection , will obviously limit its development . To solve this problem , while at the same time facilitate the installation and adjustment of various equipment , decided to adopt wireless transmission . The purpose of this research is to provide a good reference designs for wireless monitoring systems . In this paper, the design of wireless monitoring adapter hardware design as well as the corresponding TDMA air interface protocol , combined with the large number of experiments based on reference scenario given to solve the problem . The content of this study include the following aspects : ( 1 ) the adapter hardware , and CNC machine tools interface design . ( 2 ) study the 2.4G ISM band interference , through the design of adaptive frequency hopping to improve the anti-jamming performance to meet system requirements . (3 ) the CSMA_CA mechanisms to further improve the anti-jamming performance , solve the system access control problem . (4) with a time slot , the the beacon location registration mechanism to achieve network synchronization . The conclusions in this article by the large number of experimentally derived reflect the characteristics of the practical application of the system , and provide a reference for the further development and application ; adaptive frequency hopping and power control , as well as slot division method for improving the system of anti-jamming capability and speed up the synchronization the performance has a certain reference value .

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