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An improved approach to RS485-based long-distance high speed telemetry for industrial sensor data

  • De Gui Wang
  • , Cheng Li*
  • , Tian Huai Ding
  • *此作品的通讯作者
  • China United Coalbed Methane Corporation, Ltd
  • Tsinghua University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

In industrial fields such as seismic explorations, RS485 is considered a workhorse interface standard, and it is the most widely used for serial interface found on sensors. However, long-distance transmission at high data throughput is one of the key features. An improved RS485-based high-speed remote transmission method is developed to implement the transmission of large amounts of data from distributed sensors. Based on the signal integrity analysis, the hardware interface designs including interface chips and impedance matching are determined by continuous square-wave pulse transmission. Then a self-defined protocol with the aid of FPGA hardware real-time processing is designed to make high-speed clock recovery and frame synchronizations. The 8b/10b encoded data streams are transmitted via a twisted-pair cable in the experiment. The experimental results indicate that the designed RS485 transceiver unit can drive the 220 meter twisted-pair lines at 20Mbps data speed with an error rate of 10-11.

源语言英语
主期刊名Vehicle, Mechatronics and Information Technologies II
出版商Trans Tech Publications
1013-1017
页数5
ISBN(印刷版)9783038350606
DOI
出版状态已出版 - 2014
活动International Conference on Vehicle and Mechanical Engineering and Information Technology, VMEIT 2014 - Beijing, 中国
期限: 19 2月 201420 2月 2014

出版系列

姓名Applied Mechanics and Materials
543-547
ISSN(印刷版)1660-9336
ISSN(电子版)1662-7482

会议

会议International Conference on Vehicle and Mechanical Engineering and Information Technology, VMEIT 2014
国家/地区中国
Beijing
时期19/02/1420/02/14

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