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伴随着信息社会的到来和生产水平飞速发展,各企事业需要搜集、处理、存贮、传送和复制的信息量成倍增加。办公室自动化和工厂自动化(MAP)已经成为发展非常迅速的科学领域之一。为了适应这种情况,宽带MAP网应运而生。遵循MAP协议的宽带网络是未来的自动化工厂实现计算机综合制造系统(CIMS)不可缺少的。宽带MAP网络物理层的核心是一个高性能的AM/PSK调制解调器。本文介绍一种既参照了有关国际标准,又考虑到国内现有元器件的双二进制AM/PSK调制解调器的设计,力求简单、经济、可靠。
With the advent of the information society and the rapid development of production levels, the amount of information that various enterprises and institutions need to collect, process, store, transmit and copy has multiplied. Office automation and factory automation (MAP) have become one of the most rapidly evolving areas of science. In order to adapt to this situation, broadband MAP network came into being. Broadband networks that follow the MAP protocol are indispensable for future automated factories to implement CIMS. The heart of the broadband MAP network physical layer is a high-performance AM / PSK modem. This article introduces a dual-AM / PSK modem design that takes into account both international standards and existing components in the country to make it simple, economical, and reliable.