Optical-fiber data-word transmission system for use with microcomputer controller

Eleventh Annual International Phoenix Conference on Computers and Communication [1992 Conference Proceedings] Pub Date : 1992-04-01 DOI:10.1109/PCCC.1992.200560

Y. Wu, H. Ikeda, K. Fukuma, H. Yoshida, E. Tsuchiya, S. Shinohara, K. Nishimura

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引用次数: 10

Abstract

Experiments were carried out on a new type of data word transmission system employing a GI glass fiber. A frequency division multiplexed scheme was employed because of simple circuit configuration and low cost. Parallel data consisting of multiple frequency signals occupy separate frequencies in a specified frequency domain. The frequency domain used for the parallel data transmission system is described. A square wave frequency modulation (SWFM) scheme was used. Since the SWFM scheme enables the transmission system to be constructed very simply, a data word is easily recovered from the received SWFM signal by using a 4-b parallel data detector. For applying the new system to the industrial field, a Z80 data processor was built into the receiver to process the data words and to output the instructions to the associated external devices. This optical fiber transmission system has high reliability against electromagnetic interference.<>

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带微机控制器的光纤数据字传输系统

对一种采用GI玻璃纤维的新型数据字传输系统进行了实验研究。由于电路结构简单，成本低，采用了频分复用方案。由多个频率信号组成的并行数据在指定的频域内占据不同的频率。描述了用于并行数据传输系统的频域。采用方波调频(SWFM)方案。由于SWFM方案使得传输系统的构造非常简单，因此使用4b并行数据检测器可以很容易地从接收到的SWFM信号中恢复数据字。为了将该系统应用于工业现场，在接收机中内置了一个Z80数据处理器，用于处理数据字并将指令输出到相关的外部设备。该光纤传输系统具有较高的抗电磁干扰可靠性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Eleventh Annual International Phoenix Conference on Computers and Communication [1992 Conference Proceedings]

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