井下电机车通信系统研究与电路设计

The Research and Circuit Design of Underground Locomotive Carrier Communication System

提出了在架线电机车载波通信系统中,用数字通信取代模拟通信方式。设计出了二次调制系统:采用连续可变斜率增量调 制(CVSD)实现模拟话音信号与数字编码的转换,采用二进制相对相移键控(2DPSK)作为数字调制方式。文中给出了该通信系统中 主要技术参数的确定原则和部分具体设计电路。通过整体系统电路的试验调试,达到了设计要求。

A digital communication system is introduced to replace analog system used in underground locomotive carrier communication system. A twice modulation is designed:,CVSD was adopted to realize conversion between analog and digital voice signals, 2DPSK was used as the digital modulation mode.This paper introduces the principle for deciding the technical parameters in this communication system and also gives the part project circuit .The whole system has met the expected demand by experiments.