基于ARM 和扩频技术的架线电机车载波电话设计

针对广泛用于生产过程中机车调度的模拟载波电话实际通话噪声大、严重影响调度效果的问题，提出了以抗干扰著称的扩频技术为基础的井下架线电机车语音通信系统。并将ARM控制技术和扩频相结合，给出了语音通信模块设计、主控制模块中扩展存储器设计、扩频处理模块、CPLD模块等硬件组成及结构；系统软件设计采用面向对象程序。实践表明，在达到系统高实时性要求的同时，实现了高清晰度。

Design of Trolley Wire Haulage Motor Communication System Based on ARM and Spread Spectrum

Be aimed at the problem of analogy carried telephone which used in production process has large real-time calling noise, effecting managing effect, suggests that motor vehicles-line communication system based on spread spectrum famous as anti-interference. It uses ARM and spread spectrum together and gives hardware of pronunciation communication module, extended memory of main control module, spread spectrum treating module, CPLD module and so on. The design of software uses object-oriented Programming. Practice shows that the system reaches the high real-time requirements while achieving high clarity.