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	RS-485 bus-based high-speed data/power transmission method for seismic exploration instruments
	Ding Tianhuai ; Li Cheng ; Wang Peng ; Chen Ken ; Geng Lizhong
	2010-10-12 ; 2010-10-12
关键词	Theoretical or Mathematical/ data acquisition data communication geophysical equipment geophysics computing local area networks power transmission seismology seismometers/ RS-485 bus-based high-speed data/power transmission method seismic exploration instruments high-speed remote long wire transmission data collection FPGA technology system structure communication protocols Ethernet data signals twisted-pair electric cable rising/falling edges high-speed clock sampling bit synchronization time-clock recovery data frame recognition sampling clock frequency sending clock signal data transmission experiments data transmission system/ A0650D Data gathering, processing, and recording, data displays including digital techniques A9385 Instrumentation and techniques for geophysical, hydrospheric and lower atmosphere research B6210L Computer communications B7710 Geophysical techniques and equipment B6210 Telecommunication applications C5620L Local area networks C7340 Geophysics computing
中文摘要	An RS-485 bus-based high-speed serial data transmission system was developed for high-speed remote long wire transmission of a large amount of data collected by seismic exploration instruments using FPGA technology. The system structure and communication protocols are given. The power in the Ethernet is used to drive the RS-485 bus with transmission of the 48 V DC and data signals via the same twisted-pair electric cable. The rising/falling edges of the serial signals are used as the start symbols for high-speed clock sampling to enable bit synchronization time-clock recovery and data frame recognition with the 8 B/10 B encoded mode. The sampling clock frequency is 10 times higher than the sending clock signal. Data transmission experiments show that the system provides remote data transmission along a 220 m twisted-pair cable at transmission rates of up to 20 Mb/s with an error rate of 10/sup -11/.
语种	中文
出版者	Tsinghua University Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/80264]
专题	清华大学
推荐引用方式 GB/T 7714	Ding Tianhuai,Li Cheng,Wang Peng,et al. RS-485 bus-based high-speed data/power transmission method for seismic exploration instruments[J],2010, 2010.
APA	Ding Tianhuai,Li Cheng,Wang Peng,Chen Ken,&Geng Lizhong.(2010).RS-485 bus-based high-speed data/power transmission method for seismic exploration instruments..
MLA	Ding Tianhuai,et al."RS-485 bus-based high-speed data/power transmission method for seismic exploration instruments".(2010).

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